The document provides an overview of the design of internal combustion (IC) engine components. It discusses the operating principles of two-stroke and four-stroke engines. The principal parts of an IC engine are described including the cylinder, piston, connecting rod, crankshaft, and valve gear mechanism. Design considerations for cylinders, pistons, and other components are outlined. Parameters like bore size, cylinder wall thickness, piston ring design are discussed in relation to withstanding pressure and heat dissipation. Common materials used for different parts are also mentioned.
The propeller shaft transmits power from the gearbox to the rear differential. It includes U-joints and a slip joint to adjust for length changes over bumps. There are two main types of propeller shaft: the torque tube type, which fully encloses the shaft in a hollow tube connected to the rear axle housing, and the Hotchkiss type, which absorbs torque through the rear leaf spring using a shaft with universal joints and a sliding joint. Propeller shafts must be dynamically balanced, made of hardened steel to withstand torque loads, and designed to avoid resonance at high speeds.
Automotive gearboxes allow engines to operate at optimal speeds while providing different gear ratios to suit varying road and load conditions. They use helical and herringbone gears to smoothly and quietly change torque and speed. Common types include sliding mesh, constant mesh, and synchromesh gearboxes, as well as transaxles and sequential gearboxes. Automatic transmissions use planetary gears and hydraulics to seamlessly shift gears without driver input. This provides better fuel economy and driver experience but with lower mechanical efficiency than manual transmissions.
The document discusses the design of cylinder components in an internal combustion engine. It describes the principal parts of an engine including the cylinder and cylinder liner. The cylinder is usually made of cast iron or cast steel to withstand high temperatures and pressures. Cylinder liners are used for replaceability and can be dry or wet types. The design of a cylinder involves determining the cylinder wall thickness, bore and length, flange and studs, and cylinder head. Formulas are provided to calculate the cylinder wall thickness based on gas pressure and permissible stresses. The bore is selected based on the required engine power. Cylinder flanges use studs 0.75-1 times the flange thickness. The cylinder head accommodates ports and
The document discusses different types of injection systems used in diesel engines. It describes air injection systems which inject fuel along with compressed air but are not commonly used now. It also describes three types of solid or airless injection systems: common rail, individual pump and injector, and distributor injection. The common rail system uses a single high-pressure fuel pump to supply fuel to a header pipe that distributes to each injector. The individual pump system has a separate pump for each injector. The distributor system uses a central pump and distributor block to supply fuel to injectors.
The document discusses different types of steering systems used in automobiles. It describes rack and pinion, recirculating ball, worm and roller, and cam and lever steering systems. It then discusses power steering systems, including hydraulic, electric, and electric hydraulic systems. Electric power steering uses an electric motor to assist steering and can be customized to provide varying levels of assistance depending on driving conditions. While hydraulic systems were traditionally used, electric power steering has benefits like eliminating fluid leakage and being more energy efficient.
The piston is a disc that reciprocates within the cylinder. It receives force from expanding gases and transmits energy to the crankshaft. Pistons consist of a head, rings, skirt, and pin. They must withstand pressure and heat while minimizing mass. Common piston materials are cast iron, aluminum alloys, and steels. Piston design considers strength, heat dissipation, sealing, and stress distribution. The thickness of the head, rings, and skirt are calculated based on these factors. Ring design ensures sealing between the piston and cylinder while withstanding pressure and heat.
PPT gives you a detailed idea about fluid flywheel (fluid coupling),
its principle,construction,working, characteristics and applications with animated videos included.
videos: https://www.youtube.com/watch?v=xfaMBGMpH1o
https://www.youtube.com/watch?v=11Q4g-oOLr8
1. A vehicle frame provides the main structure and supports all other vehicle components.
2. Frames can be classified as conventional, integral, or semi-integral depending on how the frame is constructed and integrated with the body.
3. Common frame types include ladder frames, backbone frames, X-frames, perimeter frames, platform frames, and unibody/unitized frames. Subframes are also used to isolate vibration.
The propeller shaft transmits power from the gearbox to the rear differential. It includes U-joints and a slip joint to adjust for length changes over bumps. There are two main types of propeller shaft: the torque tube type, which fully encloses the shaft in a hollow tube connected to the rear axle housing, and the Hotchkiss type, which absorbs torque through the rear leaf spring using a shaft with universal joints and a sliding joint. Propeller shafts must be dynamically balanced, made of hardened steel to withstand torque loads, and designed to avoid resonance at high speeds.
Automotive gearboxes allow engines to operate at optimal speeds while providing different gear ratios to suit varying road and load conditions. They use helical and herringbone gears to smoothly and quietly change torque and speed. Common types include sliding mesh, constant mesh, and synchromesh gearboxes, as well as transaxles and sequential gearboxes. Automatic transmissions use planetary gears and hydraulics to seamlessly shift gears without driver input. This provides better fuel economy and driver experience but with lower mechanical efficiency than manual transmissions.
The document discusses the design of cylinder components in an internal combustion engine. It describes the principal parts of an engine including the cylinder and cylinder liner. The cylinder is usually made of cast iron or cast steel to withstand high temperatures and pressures. Cylinder liners are used for replaceability and can be dry or wet types. The design of a cylinder involves determining the cylinder wall thickness, bore and length, flange and studs, and cylinder head. Formulas are provided to calculate the cylinder wall thickness based on gas pressure and permissible stresses. The bore is selected based on the required engine power. Cylinder flanges use studs 0.75-1 times the flange thickness. The cylinder head accommodates ports and
The document discusses different types of injection systems used in diesel engines. It describes air injection systems which inject fuel along with compressed air but are not commonly used now. It also describes three types of solid or airless injection systems: common rail, individual pump and injector, and distributor injection. The common rail system uses a single high-pressure fuel pump to supply fuel to a header pipe that distributes to each injector. The individual pump system has a separate pump for each injector. The distributor system uses a central pump and distributor block to supply fuel to injectors.
The document discusses different types of steering systems used in automobiles. It describes rack and pinion, recirculating ball, worm and roller, and cam and lever steering systems. It then discusses power steering systems, including hydraulic, electric, and electric hydraulic systems. Electric power steering uses an electric motor to assist steering and can be customized to provide varying levels of assistance depending on driving conditions. While hydraulic systems were traditionally used, electric power steering has benefits like eliminating fluid leakage and being more energy efficient.
The piston is a disc that reciprocates within the cylinder. It receives force from expanding gases and transmits energy to the crankshaft. Pistons consist of a head, rings, skirt, and pin. They must withstand pressure and heat while minimizing mass. Common piston materials are cast iron, aluminum alloys, and steels. Piston design considers strength, heat dissipation, sealing, and stress distribution. The thickness of the head, rings, and skirt are calculated based on these factors. Ring design ensures sealing between the piston and cylinder while withstanding pressure and heat.
PPT gives you a detailed idea about fluid flywheel (fluid coupling),
its principle,construction,working, characteristics and applications with animated videos included.
videos: https://www.youtube.com/watch?v=xfaMBGMpH1o
https://www.youtube.com/watch?v=11Q4g-oOLr8
1. A vehicle frame provides the main structure and supports all other vehicle components.
2. Frames can be classified as conventional, integral, or semi-integral depending on how the frame is constructed and integrated with the body.
3. Common frame types include ladder frames, backbone frames, X-frames, perimeter frames, platform frames, and unibody/unitized frames. Subframes are also used to isolate vibration.
Construction of conventional, semi integral & integral type vehiclesKowshigan S V
There are three main types of vehicle frame construction:
1. Conventional frame construction uses a separate ladder frame that supports all vehicle systems and attaches to a separate body, providing higher strength but more vibration. It is used in trucks, buses, and larger SUVs.
2. Integral frame construction has no separate frame, with all assembly units attached directly to the rigid body, making it cheaper and lighter. However, repairs can be more difficult.
3. Semi-integral frame construction uses a partial frame in the front attached to both the engine/gearbox and front suspension, allowing easier replacement of a damaged front section. This type is used in some European and American cars.
The suspension System of an automobile is one which separates the wheel/axle assembly from the body. The primary function of the suspension system is to isolate the vehicle structure from shocks & vibration due to irregularities of the road surface.
An automobile differential couples the drive shaft to the rear driving wheels. It allows the outer wheel to rotate faster than the inner wheel during a turn by splitting torque equally between the wheels. A differential consists of one input and two outputs for the two driving wheels. It allows the wheels to rotate at different speeds to accommodate turns while keeping the average rotational input equal to the drive shaft. Differentials are commonly used in automobiles but also have non-automotive applications like performing analog arithmetic or controlling gun aim. There are different types of differentials like epicyclic, spur gear, and bevel gear differentials.
This document summarizes the testing and performance of diesel and petrol engines. It describes the key components and operating principles of diesel and petrol engines. It then discusses various performance characteristics of internal combustion engines that are used to evaluate engine performance, such as brake thermal efficiency, indicated thermal efficiency, specific fuel consumption, mechanical efficiency, volumetric efficiency, air fuel ratio, and mean effective pressure. The performance of engines is tested by measuring fuel consumption, brake power, and specific power output using various types of dynamometers.
This document provides an overview of automotive axles, wheels, tires, and steering systems. It defines different types of front and rear axles such as dead axles, live axles, stub axles, and floating axles. It also discusses wheel and tire components as well as steering geometry concepts like camber, caster, toe-in, Ackerman steering and slip angles. Finally, it covers various steering linkages and gear types used in automobiles.
This document discusses steering gear mechanisms used in vehicles. It introduces the basic principles of steering mechanisms, including that the front wheels turn to change the vehicle's direction while the back wheels remain straight. It describes two common steering mechanisms: Ackermann steering uses linkages to ensure the inside and outside wheels follow different radius circles during a turn. Davis steering is also an exact mechanism but has more sliding components, increasing wear and reducing accuracy compared to Ackermann steering. The key difference between the mechanisms is that Ackermann steering is behind the front wheels while Davis is in front, and Ackermann uses turning pairs while Davis uses sliding pairs.
The document discusses various components and types of steering gears used in automobiles. It describes common steering mechanisms like rack and pinion gears that convert rotational motion of the steering wheel into linear motion to turn the wheels. Power steering systems are also summarized, including hydraulic and electric power steering that apply pressure or torque to assist the driver in turning the wheels.
This document provides an overview of braking systems, including drum brakes and disc brakes. It describes the basic components and functioning of brakes, how braking converts kinetic energy to heat, and the requirements of effective braking. Drum brakes use brake shoes that expand inward or outward to create friction with the brake drum. Disc brakes use calipers and pads that clamp onto a brake disc attached to the wheel. The document compares advantages and disadvantages of drum brakes versus disc brakes.
The document discusses vehicle braking systems. It explains that braking works by converting kinetic energy to heat energy through friction between a moving brake component and a stationary one. The most common braking systems are disc brakes and drum brakes. It then provides details on components of braking systems like the master cylinder, brake lines, and brake assemblies.
The document discusses different types of automobile chassis structures. It describes ladder frames, which resemble two longitudinal rails linked by cross-members and provide rigidity but lower torsional strength compared to other designs. Tubular space frames use welded circular and square tubes arranged in three dimensions for strength from any direction but are more complex. Monocoque designs form a single welded structure that is efficient for mass production but heavier. Newer designs use aluminum, carbon fiber, and sandwich composites to achieve strength and lightweight rigidity.
The document summarizes disk brakes, including how they work by squeezing an attached metal disc in a hydraulic caliper to slow a vehicle's wheels. It discusses the history of disk brakes, from animal-drawn vehicles relying on animals to accelerate and decelerate, to the more complex mechanical braking systems as technology advanced. The document also outlines the key advantages of disk brakes like improved efficiency, ability to withstand higher loads, and longer service life compared to drum brakes. Types of disk brakes include fixed and floating caliper designs, with floating calipers used commonly in passenger vehicles and air-actuated sliding calipers often used in commercial vehicles.
This presentation include the information about the different types of superchargers, advantages & disadvantages of superchargers and turbochargers. One case study of variable geometry turbocharger is included with literature review.
An axle is a central shaft that supports rotating wheels. On vehicles, the axle can be fixed to the wheels and rotate with them, or fixed to the vehicle with the wheels rotating around it. Bearings are provided where the axle is mounted. The document discusses different types of rear axles like full floating, semi floating, and three quarter floating axles. It also discusses front axles, describing them as either dead or live axles. Finally, it lists four types of stub axles used to connect front wheels to front axles: Elliot, reversed Elliot, Lamoine, and reversed Lamoine.
Clutch is a mechanism which enables the rotary motion of one shaft to be transmitted, when desired, to a second shaft the axis of which is coincident with that of first.
Clutch is used to engage or disengage the engine to the transmission or gear box.
Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine.
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Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine.
Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine.
Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine.
Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine.
Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine.
Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine.
Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine.
Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine
The document discusses different types of clutches used in vehicles. It describes a clutch as a mechanical device that connects and disconnects two rotating shafts to facilitate transmission of power and motion. The main types discussed are single plate clutches, multi-plate clutches, cone clutches, and centrifugal clutches. A single plate clutch uses a flywheel, pressure plate, clutch disc/plate, and release bearing. A multi-plate clutch has multiple clutch plates to transmit higher torque. A cone clutch uses a cone shape for contact rather than plates. A centrifugal clutch uses centrifugal force from rotation to engage.
This presentation discusses epicyclic gear trains and their applications. It begins by defining an epicyclic gear train as one where the axes of gears can move relative to a fixed axis. Examples of applications include differentials in automobiles and lathes. It then discusses methods to calculate velocity ratios in epicyclic gear trains using tabular and algebraic methods. Compound epicyclic gear trains using sun and planet gears are described. Epicyclic gear trains using bevel gears are also discussed, along with examples of their use in speed reduction gears and differentials. Finally, the presentation covers torques in epicyclic gear trains and how input, output, and holding torques are related.
The document discusses key parts of internal combustion engines including pistons, valves, spark plugs, cam shafts and describes cylinder arrangements like inline-4 and V6. It also covers topics like engine size measured in cubic centimeters, overhead camshafts, and the four stroke combustion cycle. The summary provides an overview of internal combustion engines, their classification based on fuel type, ignition method, cylinder arrangement and other factors. It outlines the basic idea of how combustion drives the piston to convert the motion to a rotating crankshaft.
The document summarizes key aspects of internal combustion engines. It discusses the classification of internal combustion engines based on fuel type, ignition method, number of strokes, cycle of operation, cooling system, and more. It also describes the basic constructional details of engines, including common parts like the cylinder, piston, crankshaft, and connecting rod. Additionally, it provides an overview of the operation cycles of two-stroke and four-stroke engines as well as diesel and petrol engines.
Construction of conventional, semi integral & integral type vehiclesKowshigan S V
There are three main types of vehicle frame construction:
1. Conventional frame construction uses a separate ladder frame that supports all vehicle systems and attaches to a separate body, providing higher strength but more vibration. It is used in trucks, buses, and larger SUVs.
2. Integral frame construction has no separate frame, with all assembly units attached directly to the rigid body, making it cheaper and lighter. However, repairs can be more difficult.
3. Semi-integral frame construction uses a partial frame in the front attached to both the engine/gearbox and front suspension, allowing easier replacement of a damaged front section. This type is used in some European and American cars.
The suspension System of an automobile is one which separates the wheel/axle assembly from the body. The primary function of the suspension system is to isolate the vehicle structure from shocks & vibration due to irregularities of the road surface.
An automobile differential couples the drive shaft to the rear driving wheels. It allows the outer wheel to rotate faster than the inner wheel during a turn by splitting torque equally between the wheels. A differential consists of one input and two outputs for the two driving wheels. It allows the wheels to rotate at different speeds to accommodate turns while keeping the average rotational input equal to the drive shaft. Differentials are commonly used in automobiles but also have non-automotive applications like performing analog arithmetic or controlling gun aim. There are different types of differentials like epicyclic, spur gear, and bevel gear differentials.
This document summarizes the testing and performance of diesel and petrol engines. It describes the key components and operating principles of diesel and petrol engines. It then discusses various performance characteristics of internal combustion engines that are used to evaluate engine performance, such as brake thermal efficiency, indicated thermal efficiency, specific fuel consumption, mechanical efficiency, volumetric efficiency, air fuel ratio, and mean effective pressure. The performance of engines is tested by measuring fuel consumption, brake power, and specific power output using various types of dynamometers.
This document provides an overview of automotive axles, wheels, tires, and steering systems. It defines different types of front and rear axles such as dead axles, live axles, stub axles, and floating axles. It also discusses wheel and tire components as well as steering geometry concepts like camber, caster, toe-in, Ackerman steering and slip angles. Finally, it covers various steering linkages and gear types used in automobiles.
This document discusses steering gear mechanisms used in vehicles. It introduces the basic principles of steering mechanisms, including that the front wheels turn to change the vehicle's direction while the back wheels remain straight. It describes two common steering mechanisms: Ackermann steering uses linkages to ensure the inside and outside wheels follow different radius circles during a turn. Davis steering is also an exact mechanism but has more sliding components, increasing wear and reducing accuracy compared to Ackermann steering. The key difference between the mechanisms is that Ackermann steering is behind the front wheels while Davis is in front, and Ackermann uses turning pairs while Davis uses sliding pairs.
The document discusses various components and types of steering gears used in automobiles. It describes common steering mechanisms like rack and pinion gears that convert rotational motion of the steering wheel into linear motion to turn the wheels. Power steering systems are also summarized, including hydraulic and electric power steering that apply pressure or torque to assist the driver in turning the wheels.
This document provides an overview of braking systems, including drum brakes and disc brakes. It describes the basic components and functioning of brakes, how braking converts kinetic energy to heat, and the requirements of effective braking. Drum brakes use brake shoes that expand inward or outward to create friction with the brake drum. Disc brakes use calipers and pads that clamp onto a brake disc attached to the wheel. The document compares advantages and disadvantages of drum brakes versus disc brakes.
The document discusses vehicle braking systems. It explains that braking works by converting kinetic energy to heat energy through friction between a moving brake component and a stationary one. The most common braking systems are disc brakes and drum brakes. It then provides details on components of braking systems like the master cylinder, brake lines, and brake assemblies.
The document discusses different types of automobile chassis structures. It describes ladder frames, which resemble two longitudinal rails linked by cross-members and provide rigidity but lower torsional strength compared to other designs. Tubular space frames use welded circular and square tubes arranged in three dimensions for strength from any direction but are more complex. Monocoque designs form a single welded structure that is efficient for mass production but heavier. Newer designs use aluminum, carbon fiber, and sandwich composites to achieve strength and lightweight rigidity.
The document summarizes disk brakes, including how they work by squeezing an attached metal disc in a hydraulic caliper to slow a vehicle's wheels. It discusses the history of disk brakes, from animal-drawn vehicles relying on animals to accelerate and decelerate, to the more complex mechanical braking systems as technology advanced. The document also outlines the key advantages of disk brakes like improved efficiency, ability to withstand higher loads, and longer service life compared to drum brakes. Types of disk brakes include fixed and floating caliper designs, with floating calipers used commonly in passenger vehicles and air-actuated sliding calipers often used in commercial vehicles.
This presentation include the information about the different types of superchargers, advantages & disadvantages of superchargers and turbochargers. One case study of variable geometry turbocharger is included with literature review.
An axle is a central shaft that supports rotating wheels. On vehicles, the axle can be fixed to the wheels and rotate with them, or fixed to the vehicle with the wheels rotating around it. Bearings are provided where the axle is mounted. The document discusses different types of rear axles like full floating, semi floating, and three quarter floating axles. It also discusses front axles, describing them as either dead or live axles. Finally, it lists four types of stub axles used to connect front wheels to front axles: Elliot, reversed Elliot, Lamoine, and reversed Lamoine.
Clutch is a mechanism which enables the rotary motion of one shaft to be transmitted, when desired, to a second shaft the axis of which is coincident with that of first.
Clutch is used to engage or disengage the engine to the transmission or gear box.
Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine.
Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine.
Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine.
Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine.
Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine.
Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine.
Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine.
Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine.
Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine.
Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine. Testing and performance of an ic engine
The document discusses different types of clutches used in vehicles. It describes a clutch as a mechanical device that connects and disconnects two rotating shafts to facilitate transmission of power and motion. The main types discussed are single plate clutches, multi-plate clutches, cone clutches, and centrifugal clutches. A single plate clutch uses a flywheel, pressure plate, clutch disc/plate, and release bearing. A multi-plate clutch has multiple clutch plates to transmit higher torque. A cone clutch uses a cone shape for contact rather than plates. A centrifugal clutch uses centrifugal force from rotation to engage.
This presentation discusses epicyclic gear trains and their applications. It begins by defining an epicyclic gear train as one where the axes of gears can move relative to a fixed axis. Examples of applications include differentials in automobiles and lathes. It then discusses methods to calculate velocity ratios in epicyclic gear trains using tabular and algebraic methods. Compound epicyclic gear trains using sun and planet gears are described. Epicyclic gear trains using bevel gears are also discussed, along with examples of their use in speed reduction gears and differentials. Finally, the presentation covers torques in epicyclic gear trains and how input, output, and holding torques are related.
The document discusses key parts of internal combustion engines including pistons, valves, spark plugs, cam shafts and describes cylinder arrangements like inline-4 and V6. It also covers topics like engine size measured in cubic centimeters, overhead camshafts, and the four stroke combustion cycle. The summary provides an overview of internal combustion engines, their classification based on fuel type, ignition method, cylinder arrangement and other factors. It outlines the basic idea of how combustion drives the piston to convert the motion to a rotating crankshaft.
The document summarizes key aspects of internal combustion engines. It discusses the classification of internal combustion engines based on fuel type, ignition method, number of strokes, cycle of operation, cooling system, and more. It also describes the basic constructional details of engines, including common parts like the cylinder, piston, crankshaft, and connecting rod. Additionally, it provides an overview of the operation cycles of two-stroke and four-stroke engines as well as diesel and petrol engines.
Ijaems apr-2016-20 Design, Modeling and Analysis of Structural Strength of Cy...INFOGAIN PUBLICATION
The proficiency of any automobile engine is deals with the structural strength of its cylinder and cylinder head. Cylinder and cylinder head are most important parts of an engine because the piston moving inside the cylinder, so friction between cylinder wall and piston is very higher and due to this the mechanical load or fatigue load acting on the cylinder. So that structure of cylinder should be stronger. The combustion chamber, crank case, piston, connecting rod, crankshaft and cylinder are placed under the cylinder head. Cylinder head provides the protection against the high thermal and mechanical load on an engine, so the cylinder head is “a protector” of an engine and its parts. The review of existing literature on design, modeling and analysis of cylinder and cylinder head is presented. 3D-model of cylinder and cylinder head were created using Pro/Engineer software and ANSYS was used to analyze the thermal and structural analysis. So finally design considerations, material specifications, failure analysis, these all are reviewed successfully over here.
This document provides an introduction to internal combustion engines. It covers topics such as the classification of I.C. engines by fuel, ignition method, number of strokes, cooling system, and more. The four strokes of a diesel engine operation are described. The differences between direct and indirect diesel injection are outlined. Finally, the basic constructional details of engine components like the cylinder, piston, connecting rod, crankshaft, and others are explained.
MULTI CAVITY DIE PREPARATION, ANALYSIS AND MANUFACTURING PROCESS OF DIESEL EN...Ijripublishers Ijri
A piston is a component of reciprocating engines, reciprocating pumps, gas compressors and pneumatic cylinders,
among other similar mechanisms. It is the moving component that is contained by a cylinder and is made gas-tight by
piston rings. The piston transforms the energy of the expanding gasses into mechanical energy. The piston rides in the
cylinder liner or sleeve. Pistons are commonly made of aluminum or cast iron alloys.
The document discusses pistons, piston rings, and their roles in internal combustion engines. It describes the combustion cycle that involves the piston, including how the piston is forced upward on the compression stroke and downward on the power stroke. It also discusses piston and ring materials, piston shapes, ring types including compression and oil rings, and the functions of piston rings in sealing the combustion chamber and controlling lubrication.
This document describes a design project for a 4-cylinder 4-stroke inline engine. It includes the engine specifications, CAD sketches of components like the piston and crankshaft, performance results from a 2-liter displacement, a crank-phase diagram showing the firing order of 0-180-180-0 degrees, calculations of shaking forces and torques due to inertia forces, and plots of gas force and gas torque obtained from engine software. The document provides details on the technical aspects of the engine design that was analyzed for the graduate-level project.
The document provides information about internal combustion engines:
- It defines IC engines as engines where combustion occurs inside the combustion chamber, and examples include cars, trucks, and motorcycles. EC engines have combustion occur separately in an external boiler.
- IC engines can be classified by fuel type, cooling system, operating cycle, number of cylinders, number of strokes, and more. Compression ratio is defined as the ratio of total cylinder volume to clearance volume.
- Key components like the cylinder head, piston, connecting rod, crankshaft, and their functions are described. The construction and working of two-stroke and four-stroke petrol engines is also explained briefly.
1. INTRODUCTION TO IC ENGINE
2. FUNDAMENTALS OF IC ENGINE
3. CONSTRUCTIONAL FEATURES & FUNCTIONS OF IC ENGINE
4. MATERIALS USED
5.IC ENGINE – TERMINOLOGY
6.SEQUENCE OF OPERATION(A. Four Stroke Engine/B. Two Stroke Engine)
7. COMPARISON BETWEEN TWO STROKE AND FOUR STROKE ENGINES
8.Otto Cycle,Diesel Cycle,Dual Cycle & their Comparison
9.VALVE TIMING DIAGRAM
10.ENGINE PERFORMANCE PARAMETERS RELATED TO IC ENGINE
11. CHARACTERISTICS CURVES OF VARIOUS PERFORMANCE PARAMETERS
12. FUEL-AIR CYCLE & THEIR ANALYSIS ( 1.Brake Specific Fuel Consumption vs Size 2. Brake Specific Fuel Consumption vs Speed 3. Performance Maps )
13. ACTUAL INDICATOR DIAGRAM
14. V.C.R ENGINE SPECIFICATIONS & ITS DESCRIPTION
15. FUTURE WORKS & DISCUSSION
16. CONCLUSION
An internal combustion engine is a device in which the chemical energy of the fuel is released inside the engine and used directly for mechanical work.
The document discusses internal combustion engines. It provides classifications of IC engines based on fuel type, ignition method, number of strokes, cooling system, and other factors. It then describes the key components of IC engines like the cylinder, piston, connecting rod, crankshaft, and their functions. The document explains the four stroke cycle of IC engines including the intake, compression, power, and exhaust strokes. It also provides diagrams to illustrate engine parts and the four stroke cycle.
This document discusses energy conversion and engines. It defines an engine as a device that transforms one form of energy into another. Heat engines transform chemical energy from fuel into thermal and mechanical energy. The first internal combustion engines were developed in the early 1800s, with improvements over time leading to modern gasoline and diesel engines. Reciprocating internal combustion engines are widely used and have advantages like simplicity and efficiency, though they also cause vibration. The document describes the components, types, and nomenclature of reciprocating IC engines.
1. The document discusses internal combustion engines, which convert chemical energy from fuels like gasoline and natural gas into mechanical work.
2. Internal combustion engines are commonly used in automobiles, boats, airplanes, power generators, and other machinery. They can be classified based on their fuel, ignition method, combustion cycle, and other factors.
3. The document then focuses on describing the basic components and operating cycles of 4-stroke gasoline/petrol and diesel engines, as well as 2-stroke petrol engines. It provides details on the intake, compression, power, and exhaust strokes in each engine type.
This document provides a summary of a mechanical engineering document on automobile engineering. It includes 2 mark and 11 mark questions and answers on topics related to internal combustion engines. Some key details include:
- Components of engines like the cylinder block, cylinder head, crankcase, pistons and more are listed.
- The major types of automobiles based on fuel used are defined.
- Drive types like front-wheel drive, rear-wheel drive and all-wheel drive are classified.
- Differences between SI and CI engines are outlined regarding fuel, compression ratio, operating cycle and efficiency.
- Four-stroke and two-stroke engines are explained with diagrams showing engine components and cycles.
1. The document analyzes and compares the thermo-mechanical and vibration properties of an internal combustion engine piston made from three different materials (structural steel, cast iron, and aluminum alloy A2618) under static loading conditions using finite element analysis software ANSYS.
2. Von Mises stresses, strains, heat flux, and natural frequencies are calculated and compared for pistons made of each material. The structural steel piston experiences the highest von Mises stresses and strains while the aluminum alloy piston experiences the lowest values.
3. Material properties such as Young's modulus, Poisson's ratio, density, coefficient of thermal expansion, and shear modulus are provided for each material to be used as inputs for the finite
The document provides an overview of internal combustion engines, including:
- Engines convert energy from one form to another, usually chemical to mechanical. Heat engines specifically convert thermal energy from fuel combustion.
- Internal combustion engines have combustion occur inside the engine cylinders, while external combustion engines combust fuel externally.
- The four main components of a reciprocating internal combustion engine are the cylinder, piston, valves, and crankshaft. The engine uses the four strokes of intake, compression, power, and exhaust to convert energy in a continuous cycle.
IC Engine Basics Theory by Prof. Sagar DhotareSagar Dhotare
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Classification of Engine
Comparison Between Internal Engine and External Engine
Comparison Four-stroke Engine and Two-stroke Engine
Comparison S.I. Engine and C.I. Engine
Components of an I.C. Engine
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2. Piston
3. Connecting Rod
The document provides an overview of internal combustion engines. It defines key engine components and terminology. There are two main types of internal combustion engines - spark ignition engines and compression ignition engines. Spark ignition engines initiate combustion using a spark plug, while compression ignition engines rely on high compression to initiate combustion. The document also summarizes the combustion process in each engine type and factors affecting combustion such as fuel-air ratio, ignition timing, and engine design parameters. Performance of internal combustion engines is analyzed using metrics like indicated power, brake power, mechanical efficiency, and thermal efficiency.
The document discusses internal combustion engines. It defines an internal combustion engine as one where combustion of fuel occurs within the engine cylinder. It then provides details on the key components of an internal combustion engine, including the cylinder, piston, connecting rod, crankshaft, flywheel, camshaft, intake and exhaust manifolds. Internal combustion engines are classified as either four-stroke or two-stroke depending on the number of revolutions of the crankshaft needed to complete one cycle.
Pistons, rings, and connecting rods are essential components that transfer force between the combustion chamber and crankshaft. Pistons seal the combustion chamber and are attached to connecting rods. Pistons are constructed of cast or forged aluminum alloys and operate at high speeds, transferring force twice per crankshaft revolution. Piston rings include compression rings that seal the combustion chamber from the cylinder wall and an oil control ring that separates oil from the combustion gases. Proper piston, ring, and connecting rod assembly and maintenance are critical for engine performance and efficiency.
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1. CHAPTER 5. DESIGN OF IC ENGINE
COMPONENTS
Snehal Patel
BE Mechanical ME Cryogenics
Assist. Prof. Mechanical Engg. Department
SAL college of Engg.
DESIGN OF IC ENGINE COMPONENT 1
2. DESIGN OF IC ENGINE COMPONENTS
1. Introduction –
“An Internal combustion engine is an engine in which the combustion of fuel such as
petrol, diesel takes place inside the engine cylinder. ”
In petrol engines (S.I engines), the
correct proportion of air and petrol
is mixed in the carburetor and fed to
engine cylinder where it is ignited by
means of a spark produced at the
spark plug.
Compression Ignition Engines Or C.I Engines
In diesel engines (C.I engines), only air is
supplied to the engine cylinder during
suction stroke and it is compressed to a
very high pressure, thereby raising its
temperature from 600°Cto1000°C.
The desired quantity of fuel (diesel) is now
injected into the engine cylinder in the
form of a very fine spray and gets ignited
when comes in contact with the hot air.
Spark Ignition Engines Or S.I Engines
DESIGN OF IC ENGINE COMPONENT 2
3. THE OPERATING CYCLE OF AN I.C. ENGINE
MAY BE COMPLETED EITHER BY THE TWO
STROKES OR FOUR STROKES OF THE
PISTON.
I.C. engine two strokes of
piston.
An engine which requires two strokes of
the piston or one complete revolution of
the crankshaft to complete the cycle, is
known as two stroke engine.
The 2 stroke petrol engines are
generally employed in very light vehicles
such as scooters, motor cycles and
three wheelers.
The 2 stroke diesel engines are
generally employed in marine
propulsion.
I.C. engine four strokes of piston.
An engine which requires four strokes of
the piston or two complete revolutions of
the crankshaft to complete the cycle, is
known as four stroke engine.
The 4 stroke petrol engines are generally
employed in light vehicles such as cars,
jeeps and also in aero planes.
The 4 stroke diesel engines are generally
employed in heavy duty vehicles such as
buses, trucks, tractors, diesel locomotive
and in the earth moving machineryDESIGN OF IC ENGINE COMPONENT 3
4. 2. PRINCIPAL PARTS OF AN I C ENGINE
The principal parts of an I.C engine, as
shown in Fig. and are as follows :
1. Cylinder, cylinder liner and Cylinder Head,
2. Piston, piston rings and piston pin or
gudgeon pin,
3. Connecting rod with small and big end
bearing,
4. Crank, crankshaft and crank pin, and
5. Valve gear mechanism.
The design of the above mentioned
principal parts are discussed, in detail in next
slides
DESIGN OF IC ENGINE COMPONENT 4
5. FUNCTIONS OF CYLINDER
Primary function is to retain the working fluid such as mixture of air and petrol or air
and diesel.
Secondary function is to guide the piston
DESIGN OF IC ENGINE COMPONENT 5
6. CYLINDER, CYLINDER LINER & CYLINDER
HEAD
Construction
Cylinder has to withstand high temperature due to the combustion of fuel,
therefore, some arrangement must be provided to cool the cylinder.
The single cylinder engines (such as scooters and motorcycles) are generally air
cooled. They are provided with fins around the cylinder. These fins increases
surface area of cylinder wall and also improves overall heat transfer coefficient (
For e.g. Scooters & Motorcycles)
The multi-cylinder engines (such as of cars) are provided with water jackets
around the cylinders to cool it.
In smaller engines. the cylinder, water jacket and the frame are made as one piece,
but for all the larger engines, these parts are manufactured separately. The
cylinders are provided with cylinder liners so that in case of wear, they can be
easily replaced
DESIGN OF IC ENGINE COMPONENT 6
7. CYLINDER & CYLINDER LINER
Advantages – of Use of Separate cylinder liner
1. More Economical , easily replaced against worn out (complete assembly of cylinder,
frame & jacket need not be replaced).
2. Only Cylinder Liner is Made up of Better Grade wear resistant CI ,while frame & jacket
made up of Low grade CI (This saves Cost of manufacturing)
3. Use of Cylinder liner allows Longitudinal expansion.
The cylinder liners are of the two types : 1. Dry Liner and 2. Wet liner.
DESIGN OF IC ENGINE COMPONENT 7
8. THE CYLINDER LINERS ARE OF THE TWO
TYPES :, 1. DRY LINER AND 2. WET LINER.
A cylinder liner which does not have
any direct contact with the engine
cooling water in jacket, is known as
Dry liner, as in Fig.
A cylinder liner which have its outer
surface in direct contact with the
engine ooling water in jacket , is
known as Wet liner
DESIGN OF IC ENGINE COMPONENT 8
9. REQUIREMENTS OF CYLINDER
MATERIAL
Should be strong enough to withstand high gas pressure
Should be strong enough to withstand thermal stresses
Should be hard enough to resist wear due to piston movement
Should have good surface finish to reduce friction during piston movement
Should be corrosion resistant
DESIGN OF IC ENGINE COMPONENT 9
10. COMMON CYLINDER MATERIALS
Grey cast iron (usually)
Nickel cast iron or Nickel Chromium cast iron for heavy duty applications
Cast steels and Aluminium alloys may also be used
DESIGN OF IC ENGINE COMPONENT 10
11. DESIGN OF CYLINDER
Involves assessment of following
dimensions:
1. Bore of cylinder
2. Length of cylinder
3. Thickness of cylinder wall
4. Thickness of cylinder head
5. No. and diameter of cylinder head studs
6. Pitch circle diameter of studs
DESIGN OF IC ENGINE COMPONENT 11
12. THICKNESS OF CYLINDER WALL
The cylinder wall is subjected to gas pressure and the piston side thrust. The gas
pressure produces the following two types of stresses
1. Longitudinal stress
2. Circumferential stress.
Since these two stresses act at right angles to each other, therefore, the net stress in
each direction is reduced. The piston side thrust tends to bend the cylinder wall, but
the stress in the wall due to side thrust is very small and hence it may be neglected.
Let Do= Outside diameter of the cylinder in mm,
D = Inside diameter of the cylinder in mm,
p = Maximum pressure inside the engine cylinder in N/mm0
t = Thickness of the cylinder wall in mm, and
1/m = Poisson’s ratio. It is usually taken as 0.25. DESIGN OF IC ENGINE COMPONENT 12
13. DESIGN OF CYLINDER-COUN….
The apparent longitudinal stress is given by
the apparent circumferential stress is given by
Net longitudinal stress= 𝜎𝑙 −
𝜎 𝐶
𝑚
Net circumferential stressstre= 𝜎 𝐶 −
𝜎 𝑙
𝑚
DESIGN OF IC ENGINE COMPONENT 13
14. THICKNESS OF CYLINDER WALL
𝑡 =
𝑝 𝑚𝑎𝑥 𝐷
2𝜎 𝑐
+ 𝐶
t = thickness of cylinder wall (mm)
Pmax = maximum gas pressure inside cylinder (10 times indicated mep)
σc = permissible circumferential stress for cylinder material (35 to 100 MPa)
D = Bore diameter (mm)
C = re-boring allowance (according to bore diameter from data book)
Allowance for reboring for I. C. engine cylinders.
The thickness of the cylinder wall usually varies from 4.5 mm to 25 mm or more
depending DESIGN OF IC ENGINE COMPONENT 14
15. BORE AND LENGTH OF CYLINDER
Brake power
𝐵. 𝑃. =
𝑃 𝑚𝑏 𝐿𝐴𝑛
60
Indicated power
𝐼. 𝑃. =
𝑃 𝑚𝑏 𝐿𝐴𝑛
60
Mechanical efficiency (usually 80 % if not given)
𝜂 𝑚 =
𝐵𝑃
𝐼𝑃
Length of stroke is usually 1.5 times bore diameter
Length of cylinder is more than length of stroke
(usually 15%) Since there is a clearance on both sides of
the cylinder, therefore length of the cylinder is taken as
15 percent greater than the length of stroke.
Where,
Pmb = Indicated mean effective
pressure in N/mm
D = Cylinder bore in mm,
A = Cross-sectional area of the
cylinder in mm
l = Length of stroke in metres,
N = Speed of the engine in r.p.m.,
and
n = Number of working strokes per
min
= N, for two stroke engine
= N/2, for four stroke engine.DESIGN OF IC ENGINE COMPONENT 15
16. THICKNESS OF CYLINDER HEAD
𝑡 = 𝐷
𝐾𝑝 𝑚𝑎𝑥
𝜎 𝑐
th = thickness of cylinder head (mm)
D = Bore diameter (mm)
K = a constant (= 0.162)
Pmax = maximum gas pressure inside cylinder (10 times indicated mep)
σc = permissible circumferential stress for cylinder head material (30 to 50 MPa)
DESIGN OF IC ENGINE COMPONENT 16
17. STUDS FOR CYLINDER HEAD
Minimum no. of studs = 0.01 D + 4
Maximum no. of studs = 0.02 D + 4
Diameter of studs
z = no. of studs , It may be taken as 0.01 D + 4 to 0.02 D + 4
dc = core diameter of studs (= 0.8 times nominal diameter d)
σt = allowable tensile stress for stud material (35 to 70 MPa)
Pitch circle diameter of studs Dp = D + 3d
DESIGN OF IC ENGINE COMPONENT 17
18. DESIGN OF IC ENGINE COMPONENTS-
PISTON
The piston is a disc which reciprocates within a cylinder. It is either moved by the fluid
or it moves the fluid which enters the cylinder.
The main function of the piston of an internal combustion engine is to receive the
impulse from the expanding gas and to transmit the energy to the crankshaft through
the connecting rod.
The piston must also disperse a large amount of heat from the combustion chamber
to the cylinder walls.
DESIGN OF IC ENGINE COMPONENT 18
19. DESIGN OF PISTON (CONTD.)
The piston of internal combustion engines are
usually of trunk pistons are open at one end and
consists of the following parts :
Head or crown. The piston head or crown may be
flat, convex or concave depending upon the
design of combustion chamber. It withstands the
pressure of gas in the cylinder.
Piston rings. The piston rings are used to seal
the cylinder in order to prevent leakage of the gas
past the piston.
Skirt. The skirt acts as a bearing for the side
thrust of the connecting rod on the walls of
cylinder.
Piston pin. It is also called gudgeon pin or wrist
pin. It is used to connect the piston to the
connecting rod.
DESIGN OF IC ENGINE COMPONENT 19
20. DESIGN CONSIDERATIONS FOR A PISTON
It should have enormous strength to withstand the high gas pressure and inertia
forces.
It should have minimum mass to minimise the inertia forces.
It should form an effective gas and oil sealing of the cylinder.
It should provide sufficient bearing area to prevent undue wear.
It should disprese the heat of combustion quickly to the cylinder walls.
It should have high speed reciprocation without noise.
It should be of sufficient rigid construction to withstand thermal and mechanical
distortion. DESIGN OF IC ENGINE COMPONENT 20
21. COMMON PISTON MATERIALS
1. Aluminium
thermal conductivity thrice as that of
cast iron
density one third that of cast iron
(reduced weight)
1. Cast Iron
higher strength as compared to
Aluminium
relatively more wear strength (than
Aluminium)
DESIGN OF IC ENGINE COMPONENT 21
22. DESIGN OF PISTON
Involves assessment of following dimensions:
1. Thickness of piston head (th )
2. Thickness of Rib (tr )
3. Radial thickness of piston rings (a1 )
4. Axial thickness of piston rings (h1 )
5. Width of top land
6. Thickness of piston barrel at the top end (t3 )
7. Thickness of piston barrel at open end (t4 )
8. Length of piston skirt
9. Total length of piston
DESIGN OF IC ENGINE COMPONENT 22
23. PISTON HEAD OR CROWN
The piston head or crown is designed keeping in view the following two main
considerations, i.e.
1. It should have adequate strength to withstand the straining action due to pressure of
explosion inside the engine cylinder, and
2. It should dissipate the heat of combustion to the cylinder walls as quickly as possible.
On the basis of first consideration of straining action, the thickness of the piston
head is determined by treating it as a flat circular plate of uniform thickness, fixed at the
outer edges and subjected to a uniformly distributed load due to the gas pressure over
the entire cross-section.
The thickness of the piston head , according to Grashoff’s formula is given byD = cylinder bore (mm)
pmax = maximum gas pressure (4 to 5 MPa)
σt = permissible bending stress (35 to 40 MPa for C.I. and
50 to 90 MPa for Al)
DESIGN OF IC ENGINE COMPONENT 23
24. On the basis of second consideration of heat transfer, the thickness of the piston head should
be such that the heat absorbed by the piston due combustion of fuel is quickly transferred to the
cylinder walls. Treating the piston head as a flat circular plate, its thickness is given by
where H = Heat flowing through the piston head in kJ/s or watts,
k=Heat conductivity factor in W/m/°C. Its value is 46.6 W/m/°C for grey cast iron, 51.25 W/m/°C
for steel and 174.75 W/m/°C for aluminium alloys.
Tc = Temperture at the centre of the piston head in °C, and
Te = Temperature at the edges of the piston head in °C.
The temperature difference (Tc– Te) may be taken as 220°C for cast iron and 75°C for aluminium.
The heat flowing through the positon head (H) may be determined by the following expression,
i.e.,
C = Constant representing that portion of the heat supplied to the engine which is absorbed by
the piston. Its value is usually taken as 0.05.
HCV = Higher calorific value of the fuel in kJ/kg. It may be taken as 45 × 103 kJ/kg for diesel and
47 × 103 kJ/kg for petrol,
m = Mass of the fuel used in kg per brake power per second, and
B.P. = Brake power of the engine per cylinder DESIGN OF IC ENGINE COMPONENT 24
25. PISTON RINGS
Thickness of rib = 1/3 to 1/2 (thickness of piston head)
The piston rings are used to impart the necessary radial pressure to maintain the seal between the
piston and the cylinder bore.
These are usually made of grey cast iron or alloy cast iron because of their good wearing
properties and also they retain spring characteristics even at high temperatures.
The piston rings are of the following two types :
1. Compression rings or pressure rings, and
2. Oil control rings or oil scraper.
The compression rings or pressure rings are inserted in the grooves at the top portion of the piston
and may be three to seven in number. These rings also transfer heat from the piston to the cylinder liner
and absorb some part of the piston fluctuation due to the side thrust.
The oil control rings or oil scrapers are provided below the compression rings. These rings provide
proper lubrication to the liner by allowing sufficient oil to move up during upward stroke and at the sameDESIGN OF IC ENGINE COMPONENT 25
26. CONTINUE
The compression rings are usually made of rectangular cross-section and the diameter of
the ring is slightly larger than the cylinder bore. A part of the ring is cut- off in order to
permit it to go into the cylinder against the liner wall. The diagonal cut or step cut ends, as
shown in Fig. respectively, may be used.
The gap between the ends should be sufficiently large when the ring is put cold so that
even at the highest temperature, the ends do not touch each other when the ring expands,
otherwise there might be buckling of the ring.
DESIGN OF IC ENGINE COMPONENT 26
27. DESIGN OF PISTON (CONTD.)
Radial thickness of piston rings
d1 = diameter of cylinder bore (mm)
pw = allowable pressure (0.025 to 0.042 MPa)
σ t = permissible tensile stress (85 to 110 MPa)
1. Axial width of piston ring h1 = 0.7 to 1.0
a1
2. Width of top land = 1.0 to 1.2 th
3. Width of ring groove = 0.75 to 1.0 h1
4. Thickness of piston barrel at the top end t3
= 0.03 d + a1 + 4.9
5. Thickness of piston barrel at open end t4 =
0.25 to 0.35 t3
6. Length of piston skirt 0.65 to 0.8 D
7. Total length of piston 1.0 to 1.5 D
DESIGN OF IC ENGINE COMPONENT 27