Internal combustion engine
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This document discusses internal combustion engines, including the components and workings of different types of IC engines like 4-stroke SI and CI engines and 2-stroke engines. It also covers actual and theoretical PV diagrams and valve timing diagrams for SI and CI engines, as well as cycle analysis, assumptions in air standard cycles, and numerical examples.
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presentation on Introducing components of ic engine (automobile engine), Powe...
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it is very good ppt in the topic of internal combustion engine created by Aditya Singh from apex group of instution rampur Uttra predesh
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Internal combustion (ic) engines
Internal combustion (ic) engines.
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Comonents of ic engine
Comonents of ic engine
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spark plug
fuel injector
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connecting rod
valves
camshaft
crankshaft
flywheel
timing chain
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The document discusses different types of internal combustion engines. It describes the four-stroke spark ignition engine, which intakes air and fuel on the first stroke, compresses it on the second, ignites it with a spark plug on the third power stroke, and exhausts on the fourth stroke. The two-stroke engine completes this cycle with only two strokes per revolution using ports instead of valves, providing power every rotation but being less efficient and more polluting. Valve and ignition timing is important for synchronization between engine cycles.
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The document provides information on internal combustion engines, including:
- IC engines convert chemical energy from fuels like gasoline into mechanical work. They are used in vehicles, generators, and other machinery.
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The document then discusses air standard cycles that model idealized versions of engine cycles, including the Otto cycle for gasoline engines and Diesel cycle for diesel engines. It provides analysis of the cycles
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This document compares and contrasts spark ignition (SI) engines and compression ignition (CI) engines. It states that SI engines, typically gasoline engines, ignite air-fuel mixtures using a spark plug, while CI engines, typically diesel engines, ignite fuel injected into compressed hot air without a spark. It provides details on fuels used, combustion processes, compression ratios, and differences in air/fuel intake and combustion between the two engine types.
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The document provides an overview of heat engines and internal combustion (I.C.) engines. It discusses how heat engines work by taking in heat from fuel combustion and partially converting it to mechanical work. I.C. engines are introduced as a type of heat engine where combustion occurs within the engine cylinder. The document then covers common classifications of I.C. engines, important engine parts like the piston and crankshaft, the basic working principle, and terminologies used in I.C. engines like bore and stroke.
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The document discusses internal combustion engines and how they convert chemical energy from fuel into mechanical energy. It provides examples of internal combustion engines like gasoline and diesel engines. It also discusses external combustion engines, where combustion of fuel occurs outside the engine cylinder. The key differences are that internal combustion engines have one working fluid and combustion occurs inside the cylinder, while external combustion engines have two working fluids and combustion occurs outside. Internal combustion engines are smaller and have less heat losses than external combustion engines.
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This presentation discusses internal combustion engines. It provides an introduction and overview of external combustion engines and internal combustion engines. It then focuses on internal combustion engines, describing their main parts like the cylinder block, cylinder head, piston, connecting rod, crankshaft, valves, spark plug, injector, manifold, and camshaft. It also defines important engine terminology and classifications of internal combustion engines. The advantages of internal combustion engines are listed as having higher efficiency than external combustion engines while also being more compact and having a lower initial cost.
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The document discusses internal combustion (IC) engines. It begins by defining a heat engine as a system that converts heat or thermal energy into mechanical energy. It then distinguishes between external combustion engines, where combustion occurs outside the engine, and internal combustion engines, where combustion occurs inside the engine. The document goes on to classify IC engines based on their application, design, operating cycle, and whether they use a four-stroke or two-stroke cycle. It provides examples of each and describes the four strokes of a four-stroke engine: intake, compression, power, and exhaust. Advantages of IC engines are also listed.
I C ENGINE
The internal combustion engine is an engine where fuel combustion occurs inside cylinders, producing high temperatures. This heat must be removed to prevent damage to engine parts. Heat removal is typically done by circulating water through jackets around the cylinders. Internal combustion engines can be classified in various ways, including by fuel type, ignition method, number of strokes, cooling system, and more. The main components of an internal combustion engine are the cylinder, cylinder head, piston, piston rings, connecting rod, crankshaft, crankcase, and flywheel.
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This document provides an overview of internal combustion engines. It begins with an introduction that defines engines and heat engines. It then covers the history and classification of IC engines. The main parts of an IC engine are described along with advancements like direct fuel injection. Performance parameters and the operation of 2-stroke and 4-stroke engines are explained. Emerging technologies like digital triple spark ignition and nano engines are also discussed.
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The document provides information on the basics of internal combustion (IC) engines. It discusses the differences between two-stroke and four-stroke engines, the sequence of operations in an IC engine cycle, valve timing diagrams for petrol and diesel engines, and comparisons of petrol and diesel engines. It also covers topics like scavenging, ignition systems, supercharging, lubrication, governing, carburetors, spark plugs, detonation, and octane ratings of fuels for spark ignition engines.
Internal combustion (ic) engines
Internal combustion (ic) engines.
An internal combustion engine (ICE) is a heat engine where the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber that is an integral part of the working fluid flow circuit.
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The document describes different types of internal combustion engines. It begins by defining heat engines and classifying them as either external or internal combustion engines. It then focuses on internal combustion engines, describing their basic components and functions. It provides details on the four stroke cycles of petrol and diesel engines. Key differences between petrol and diesel engines are outlined. Finally, it briefly introduces two stroke engines and depicts their operating cycles.
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The document discusses internal combustion engines. It classifies engines based on their fuel type, number of strokes, ignition method, combustion cycle, number of cylinders, cylinder arrangement, and cooling method. It then describes the key parts of an internal combustion engine, including the cylinder, piston, piston rings, connecting rod, crank and crankshaft, valves, and flywheel. Finally, it explains the four strokes of operation in both a four-stroke petrol engine and four-stroke diesel engine: the intake stroke, compression stroke, power/expansion stroke, and exhaust stroke.
Basics of IC engine
The document provides an overview of internal combustion engines. It discusses the basic classifications and cycles of internal combustion engines including two-stroke and four-stroke engines. It also covers the workings of spark ignition and compression ignition engines, as well as common engine components and systems such as carburetors and fuel injection systems. Key topics include the Otto, Diesel, and Carnot power cycles; combustion stages; valve timing diagrams; and scavenging, pre-ignition, detonation, lubrication, and emissions control.
Comonents of ic engine
Comonents of ic engine
1. Cylinder head
spark plug
fuel injector
turbo charger
supercharger
piston, piston rings
connecting rod
valves
camshaft
crankshaft
flywheel
timing chain
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The document discusses internal combustion engines, including their basic components and operating cycles. It describes the four main strokes of a four-stroke engine: intake, compression, power, and exhaust. It also summarizes the operation of two-stroke engines and differences from four-stroke engines, such as using crankcase compression and ports instead of valves. Additionally, it covers the classification of engines as spark ignition or compression ignition and compares their combustion processes.
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The document discusses different types of internal combustion engines. It describes the four-stroke spark ignition engine, which intakes air and fuel on the first stroke, compresses it on the second, ignites it with a spark plug on the third power stroke, and exhausts on the fourth stroke. The two-stroke engine completes this cycle with only two strokes per revolution using ports instead of valves, providing power every rotation but being less efficient and more polluting. Valve and ignition timing is important for synchronization between engine cycles.
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This document provides information about internal combustion engines, including:
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The document discusses different types of internal combustion engines. It describes two-stroke and four-stroke engines, as well as their similarities and differences. The key aspects covered include the combustion cycle, ignition methods, cooling systems, fuel types, cylinder arrangements, and applications of different engine types. It also discusses the basic components and functioning of four-stroke engines through labeled diagrams and animations of the intake, compression, power, and exhaust strokes. Turbines, pumps, compressors and other power consuming devices are briefly introduced as well.
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The document discusses the key components and workings of an internal combustion (IC) engine. It defines a cylinder as the central working part where a piston travels, and a connecting rod as connecting the piston to the crankshaft. The IC engine converts chemical energy from fuel into mechanical energy by igniting a fuel-air mixture in the combustion chamber, which then acts on the piston. Some advantages of IC engines over external combustion engines are that they are cheaper, have a higher power-to-weight ratio, and emissions can be minimized with advanced designs.
IC Engine
The document presents information on internal combustion engines. It discusses the conversion of chemical energy to mechanical energy through fuel combustion in the combustion chamber. It also covers key engine parts like the 2 stroke and 4 stroke systems. The differences between superchargers and turbochargers are explained. A supercharger is connected to the crankshaft, while a turbocharger uses exhaust gases to drive a turbine. The roles of clutches in connecting the driver to the driven shaft and brakes in preventing wheel motion through friction are also summarized. The conclusion notes that gains in engine technology have mostly increased power rather than fuel efficiency, but hopes that efficiency will become more of a priority.
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Automobile Engineering Engine Scavanging
This document defines scavenging and describes the different types of scavenging processes in two-stroke engines. Scavenging is the process where burnt gases escape the cylinder to make room for fresh fuel-air mixture. It discusses three theoretical scavenging processes: perfect scavenging, perfect mixing, and short circuiting. It also describes three practical scavenging processes used in engines: uniflow, loop, and crossflow scavenging. Uniflow has exhaust at the top and inlet ports at the bottom, with flow in the same direction. Loop scavenging has inlet and exhaust ports on one side with the fresh charge flowing in a loop. Crossflow has the transfer and exhaust ports opposite each other
Combustion in Internal Combustion (IC) Engines
A century and nearly two decades later there has been immense progress in the field of IC engines, though many phenomenon taking place are still to be understood physically. This blog aims at comprehension of some of the astonishing research that has been done in this field restricting our interest to combustion with some amusing facts.
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This document provides an overview of the key components of an internal combustion (IC) engine in an automobile. It lists and describes the main components, including the engine block, crankshaft, connecting rod, piston, piston rings, valves, camshaft, cylinder head, intake and exhaust manifolds, radiator, spark plugs, fuel system components, and more. The purpose is to familiarize mechanical engineering students with the basic parts of an engine and their basic functions.
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The document provides definitions and descriptions of key components and processes in internal combustion engines. It discusses the four main components - block, cylinder head, crankshaft and pistons. It also summarizes the four strokes of the internal combustion engine cycle: 1) intake/suction stroke, 2) compression stroke, 3) combustion, 4) power/exhaust stroke. The compression and combustion processes are described in detail.
Heat Engine
Heat engines transform heat into work using two energy reservoirs at different temperatures. They include car, truck, jet, and rocket engines as well as steam engines and turbines. Heat engines have a maximum possible thermal efficiency known as the Carnot efficiency, which depends on the temperatures of the reservoirs. Refrigerators, which are heat engines run in reverse, also have a maximum coefficient of performance given by the Carnot coefficient of performance. The most efficient heat engines and refrigerators are Carnot engines, which operate through reversible cycles between the reservoirs. Common heat engine cycles include the Otto, Diesel, Brayton, and Stirling cycles. Steam turbines are widely used to generate electricity and use the Brayton cycle.
B.tech i eme u 3 heat engine
The document discusses heat engines and internal combustion engines. It provides details on:
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4 STROKE PETROL Engine
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Volumetric efficiencies above 100% can be achieved through forced induction like supercharging or turbocharging. Naturally aspirated engines can also exceed 100% efficiency through proper tuning, with the limit being around 137% for engines with a DOHC layout and four valves per cylinder. Thermal efficiencies tend to be highest for direct-injected diesel engines around 35-38%, while spark-ignited gasoline engines are usually below 25% efficiency.
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This document discusses heat engines and their classification. It describes heat engines as devices that convert chemical energy to heat energy and then mechanical work. Heat engines are classified as either external or internal combustion engines. The document then covers common heat engine cycles like the Carnot, Rankine, Otto, and Diesel cycles. It provides details on the processes, diagrams, applications, and limitations of each cycle.
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Internal combustion engine
- 2. Types Of Heat Engine • Internal Combustion Engine
- 5. Working Of Four Stroke SI Engine
- 6. Working Of Four Stroke CI Engine
- 7. Working Of Two Stroke Engine
- 8. Actual And Theoretical PV Diagram for SI Engine
- 9. Actual And Theoretical PV Diagram for CI Engine
- 10. Actual Valve Timing Diagram For SI Engine
- 11. Actual Valve Timing Diagram For SI Engine
- 12. Scavenging
- 15. Cycle Analysis of IC engines • Assumptions made in the analysis of air standard cycle 1.Working medium is air 2. Behaves like ideal gas 3. A constant mass is carried out through out the cycle 4. All the process are reversibele 5. No heat and friction loss 6. Heat is added from heat reservoir and rejected to heat sink
- 16. Numericals