Fuel injection system in c.i engines
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This document discusses different fuel injection systems for diesel engines, including air injection systems, solid injection systems, and electronic injection systems. It describes the common rail direct injection (CRDI) system, individual pump system, and distributor system as types of solid fuel injection. The document also covers fuel injection pumps, including the jerk type and distributor type pumps. Finally, it discusses different types of nozzles used in injectors, such as pintle, single hole, multiple hole, and pintaux nozzles.
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ppt of fuel injection system
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.
Air Injection and Solid Injection System
This document summarizes different types of fuel injection systems used in diesel engines. It describes air injection systems which inject fuel along with compressed air, but are not commonly used today. It also discusses solid injection and airless injection systems, categorizing them as common rail, individual pump and injector, or distributor injection systems. The common rail system uses a single high-pressure pump to supply fuel to a header or rail that distributes fuel to each injector. Individual pump systems have a separate pump for each injector. Distributor systems use a central pump and distributor block to time fuel injection.
Fuel Injection Systems
The document discusses fuel injection systems for internal combustion engines. It describes the key components and functions of fuel injection systems. The systems work to accurately meter and inject fuel into the combustion chamber at precise timings and rates to achieve proper mixing and combustion. Common components include the fuel tank, feed pump, injection pump, injector nozzle, and governor. The injection pump pressurizes and meters the fuel supply, while the nozzle atomizes the fuel into fine droplets for rapid mixing in the chamber.
Carburettor ppt
The document summarizes the key components and functions of a carburetor. It describes the fuel strainer, float chamber, metering and idling system, choke, throttle, and additional modern systems. It then discusses the working of specific carburetor types, including the Solex carburetor which uses a starting jet, compensating jet, main jet, idling jet, and accelerating jet to regulate fuel flow during different engine operations.
Carburetors types
This document discusses three common types of small engine carburetors: natural or side draft, updraft, and downdraft. The natural or side draft carburetor is used when space is limited above the engine and allows air to flow horizontally into the manifold. The updraft carburetor is placed low on the engine and uses gravity to feed fuel from an above tank to the carburetor, forcing the air-fuel mixture upward. The downdraft carburetor operates with lower air velocities and larger passages, providing larger volumes of fuel when needed and allowing gravity to assist the air-fuel mixture flow.
Combustion chambers in si engines
The document discusses different types of combustion chambers used in spark ignition engines. It describes the T-head, L-head, I-head (overhead valve), and F-head combustion chamber designs. The T-head was the earliest type but was prone to knocking. The L-head and F-head were improvements that used a single camshaft but still had valves in the block. The overhead valve design with both valves in the cylinder head became most common after 1950 as it allows for higher compression ratios and improved performance. The document lists advantages of the overhead valve design such as reduced pumping losses and knock susceptibility.
Fuel system fundamentals
This document provides an overview of fuel systems, including the main components and how they work. It compares carbureted and fuel injected systems, describing the different types of fuel injection. Electronic fuel injection uses sensors, actuators, and a computer to precisely meter fuel delivery. The computer receives feedback from oxygen sensors to continuously adjust the air-fuel ratio for optimal performance and emissions.
types of fuel injection system and nozzles
The document discusses fuel injection systems for diesel engines. It describes the key elements of fuel injection systems including pumping, metering, distribution, and timing controls. It outlines different types of injection systems such as common rail, unit injection, individual pump and nozzle, and distributor systems. It also discusses the injection pump, fuel injector, nozzle types, and operation of the fuel injector.
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ppt of fuel injection system
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.
Air Injection and Solid Injection System
This document summarizes different types of fuel injection systems used in diesel engines. It describes air injection systems which inject fuel along with compressed air, but are not commonly used today. It also discusses solid injection and airless injection systems, categorizing them as common rail, individual pump and injector, or distributor injection systems. The common rail system uses a single high-pressure pump to supply fuel to a header or rail that distributes fuel to each injector. Individual pump systems have a separate pump for each injector. Distributor systems use a central pump and distributor block to time fuel injection.
Fuel Injection Systems
The document discusses fuel injection systems for internal combustion engines. It describes the key components and functions of fuel injection systems. The systems work to accurately meter and inject fuel into the combustion chamber at precise timings and rates to achieve proper mixing and combustion. Common components include the fuel tank, feed pump, injection pump, injector nozzle, and governor. The injection pump pressurizes and meters the fuel supply, while the nozzle atomizes the fuel into fine droplets for rapid mixing in the chamber.
Carburettor ppt
The document summarizes the key components and functions of a carburetor. It describes the fuel strainer, float chamber, metering and idling system, choke, throttle, and additional modern systems. It then discusses the working of specific carburetor types, including the Solex carburetor which uses a starting jet, compensating jet, main jet, idling jet, and accelerating jet to regulate fuel flow during different engine operations.
Carburetors types
This document discusses three common types of small engine carburetors: natural or side draft, updraft, and downdraft. The natural or side draft carburetor is used when space is limited above the engine and allows air to flow horizontally into the manifold. The updraft carburetor is placed low on the engine and uses gravity to feed fuel from an above tank to the carburetor, forcing the air-fuel mixture upward. The downdraft carburetor operates with lower air velocities and larger passages, providing larger volumes of fuel when needed and allowing gravity to assist the air-fuel mixture flow.
Combustion chambers in si engines
The document discusses different types of combustion chambers used in spark ignition engines. It describes the T-head, L-head, I-head (overhead valve), and F-head combustion chamber designs. The T-head was the earliest type but was prone to knocking. The L-head and F-head were improvements that used a single camshaft but still had valves in the block. The overhead valve design with both valves in the cylinder head became most common after 1950 as it allows for higher compression ratios and improved performance. The document lists advantages of the overhead valve design such as reduced pumping losses and knock susceptibility.
Fuel system fundamentals
This document provides an overview of fuel systems, including the main components and how they work. It compares carbureted and fuel injected systems, describing the different types of fuel injection. Electronic fuel injection uses sensors, actuators, and a computer to precisely meter fuel delivery. The computer receives feedback from oxygen sensors to continuously adjust the air-fuel ratio for optimal performance and emissions.
types of fuel injection system and nozzles
The document discusses fuel injection systems for diesel engines. It describes the key elements of fuel injection systems including pumping, metering, distribution, and timing controls. It outlines different types of injection systems such as common rail, unit injection, individual pump and nozzle, and distributor systems. It also discusses the injection pump, fuel injector, nozzle types, and operation of the fuel injector.
Basic of Combustion in CI Engines
The document provides information on combustion in compression ignition (CI) engines. It discusses various topics such as:
1. The stages of combustion in CI engines including ignition delay period, uncontrolled combustion, controlled combustion, and afterburning. Ignition delay depends on factors like temperature, fuel quality, and compression ratio.
2. Diesel knock (detonation) which produces a clanking sound from rapid combustion. It can be controlled by using better fuel, controlling fuel supply rate, and increasing swirl.
3. Different types of combustion chambers in CI engines including direct injection, indirect injection, pre-combustion chamber, swirl chamber, and air-cell chamber.
4. F
Gasoline direct Injection
This document summarizes key aspects of gasoline direct injection (GDI) engine technology. It discusses the timeline of fuel supply systems from carburetors to port injection to direct injection. The main components of a GDI system are described as the engine control unit, sensors, high pressure fuel pump, and fuel injector. GDI works by directly injecting pressurized fuel into the combustion chamber, allowing for improved efficiency and reduced emissions compared to port fuel injection. Benefits of GDI engines include increased power and torque, reduced fuel consumption and CO2 emissions, and ability to meet future emissions standards.
Combustion in si engine
Combustion in an SI engine occurs in three stages:
1. The ignition lag stage is the delay between the spark and noticeable pressure rise from combustion. This allows the fuel-air mixture to heat up to its self-ignition temperature.
2. In the flame propagation stage, the flame front travels across the combustion chamber, releasing energy and increasing pressure.
3. The afterburning stage finishes combusting any remaining unburnt fuel-air mixture after the flame front passes.
Combustion Chambers in CI Engine
This document summarizes different types of combustion chambers used in compression ignition (CI) engines. It describes direct injection combustion chambers like shallow depth, hemispherical, cylindrical, and toroidal chambers. It also describes indirect injection combustion chambers like swirl, pre-ignition, and air-cell chambers. Each type of chamber is briefly explained along with advantages it provides in fuel combustion. Direct injection chambers inject fuel directly into the cylinder while indirect injection chambers use a pre-chamber to improve combustion.
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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.
MULTI-POINT FUEL INJECTION SYSTEM
Multipoint fuel injection (MPFI) systems provide better control of the air-fuel ratio compared to carburetors. MPFI systems use multiple fuel injectors, with one injector per cylinder, to inject fuel into the engine's intake ports or manifold. This allows supplying the optimum air-fuel ratio to each cylinder for all operating conditions. MPFI systems are electronically controlled using sensors to monitor various engine parameters and optimize fuel delivery and emissions performance. While more complex than carburetors, MPFI systems improve fuel efficiency, power, and reduce emissions.
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Carburetor
The document describes the components and systems of a carburetor that allow it to provide the correct air-fuel mixture to an engine under varying operating conditions. A simple carburetor can only supply the proper mixture at one throttle position. Additional systems like the idling, auxiliary port, power enrichment, and accelerating pump systems allow the carburetor to adjust the fuel flow for different loads, speeds, and rates of acceleration. These systems provide richer mixtures for idling, acceleration, and high power demands and leaner mixtures for cruising to improve fuel economy.
TYPES OF CARBURETORS
A carburetor mixes air and fuel for combustion in an internal combustion engine. It contains several main parts including a venturi, float chamber, nozzles, and throttle valve. A carburetor uses venturi suction to draw fuel from the float chamber and mix it with air to supply the engine. The main types are updraft, downdraft, and horizontal based on airflow direction. Carburetors provide fuel metering and air-fuel ratio control for engines. While simpler than fuel injection, carburetors are less precise at mixing fuel and air.
Stratified-charge-engine-ppt
A stratified charge engine provides a rich air-fuel mixture close to the spark plug to promote ignition, while using a lean mixture for the remainder of the cylinder. This allows for higher compression ratios and leaner mixtures than conventional engines, improving fuel efficiency. The overall air-fuel ratio can reach 40:1 to 50:1. While injectors increase costs, fuel efficiency gains are offsetting this. At high loads efficiency matches conventional engines due to a stoichiometric mixture. High variability can disrupt stratified mixture formation and reduce combustion if the rich area is not near the spark.
Combustion SI Engines - Unit-III
The document discusses combustion in spark-ignition (SI) engines. It defines combustion as a chemical reaction in which fuel combines with oxygen, liberating heat energy. In an SI engine, fuel and air are mixed and inducted into the cylinder where combustion is initiated by a spark at the spark plug near the end of the compression stroke. There are three stages of combustion: ignition lag, flame propagation, and after burning. Abnormal combustion phenomena like pre-ignition and knocking can occur if conditions are not suitable. Factors like turbulence, fuel-air ratio, temperature and pressure, compression ratio, and engine variables affect the flame speed and combustion process.
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.
Ignition systems
The ignition system uses a battery, ignition coil, distributor, and spark plugs to generate a spark that ignites the fuel-air mixture in the engine's cylinders. The coil transforms a low voltage current from the battery into a high voltage spark. The distributor routes the spark to each cylinder in the proper firing order. Common ignition system types include battery ignition systems that use a distributor and magneto systems that generate sparks without a battery. Newer distributorless ignition systems have one coil and spark plug per cylinder and fire all plugs within one crankshaft revolution.
IC engine emission and control of the emissions
This document discusses emissions and emission control strategies in internal combustion engines. It covers the formation of various emissions like carbon monoxide (CO), nitrogen oxides (NOx), hydrocarbons, and particulates in both spark ignition (SI) and compression ignition (CI) engines. It also discusses emission control methods like catalytic converters and exhaust gas recirculation (EGR). The key points are: emissions form due to incomplete combustion and high temperatures; a three-way catalytic converter controls CO, HC, and NOx using platinum, palladium and rhodium; and EGR reduces NOx by lowering combustion temperatures but increases particulates.
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A clutch connects and disconnects two rotating shafts to engage and disengage power transmission. It consists of a driving member, driven member, and operating member. Common types include friction clutches like disc and cone clutches. A single plate clutch uses one clutch plate between a flywheel and pressure plate to transmit power from an engine to transmission. A multi-plate clutch uses multiple plates to transmit higher torque for racing cars and heavy vehicles. A cone clutch uses two conical surfaces to transmit torque through wedging action and increased surface area. A centrifugal clutch engages more at higher speeds using centrifugal force and weighted arms to connect engine and output shafts.
Petrol injection system
This document discusses various types of fuel injection systems used in automotive engines. It begins by explaining the differences between carburetors and fuel injection systems. It then describes several types of petrol injection systems including single point injection, throttle injection, port injection, and multi-point fuel injection. Direct injection systems are also discussed, along with their advantages such as better vaporization and higher efficiency. The document outlines the components and functioning of multi-point fuel injection systems controlled by an electronic control module. It concludes by listing some advantages and disadvantages of using petrol injection systems compared to carburetors.
Abnormal combustion in si engines ppt ic engine
The document discusses abnormal combustion in spark ignition engines. Under normal combustion, the flame travels uniformly across the combustion chamber. Abnormal combustion occurs when combustion deviates from this normal behavior. Two types of abnormal combustion are pre-ignition and knocking. Pre-ignition occurs when the fuel-air mixture ignites before the spark, while knocking is the auto-ignition of unburned fuel late in the combustion cycle. Both pre-ignition and knocking can damage engine components and reduce performance. The causes of abnormal combustion include issues with fuel quality, engine parts, air quality, cooling, vibration, and operating environment.
CI engine
The document summarizes combustion in compression ignition (CI) engines. It describes how combustion occurs simultaneously in many spots in a non-homogeneous fuel-air mixture, controlled by fuel injection timing. The four stages of CI engine combustion are ignition delay, premixed combustion, mixing-controlled combustion, and late combustion. Factors like injection timing and fuel quality can affect the ignition delay period. Knock may occur if ignition delay is too long. The document provides diagrams to illustrate CI engine combustion processes and types.
Lubrication system for an automobile
The document describes the purpose and components of an engine lubrication system. The key purposes of lubrication are to reduce friction, seal components, clean the engine, cool the engine, absorb shocks, and absorb contaminants. The main types of lubrication systems are mist/petrol-oil premix, autolube, splash, and pressure-fed wet or dry sump systems. The document outlines the components of these systems including the oil sump, pump, pickup, pressure regulator, filter, galleries, and indicators. It explains how each component functions to circulate oil through the engine.
Electronic Fuel Injection System
Electronic fuel injection systems use an electric fuel pump and pressure, rather than engine vacuum, to spray fuel into the engine intake manifold or combustion chambers. This allows for more precise fuel delivery and improved engine performance compared to carbureted systems. Modern systems are computer-controlled and use various sensors to monitor engine operating conditions and adjust fuel delivery accordingly through fuel injectors.
Fuel Injection and Ignition
The document discusses fuel injection and ignition systems used in internal combustion engines. It describes how fuel injection works by forcibly pumping fuel through a nozzle, compared to carburetion which relies on air pressure. Common fuel injection types are multi-point and direct injection. Direct injection sprays fuel directly into combustion chambers, improving performance but increasing noise. Ignition can be via spark plugs or compression ignition. Digital twin spark plug ignition and digital twin spark swirl induction are also described. The technologies have improved engine efficiency while reducing emissions.
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Basic of Combustion in CI Engines
The document provides information on combustion in compression ignition (CI) engines. It discusses various topics such as:
1. The stages of combustion in CI engines including ignition delay period, uncontrolled combustion, controlled combustion, and afterburning. Ignition delay depends on factors like temperature, fuel quality, and compression ratio.
2. Diesel knock (detonation) which produces a clanking sound from rapid combustion. It can be controlled by using better fuel, controlling fuel supply rate, and increasing swirl.
3. Different types of combustion chambers in CI engines including direct injection, indirect injection, pre-combustion chamber, swirl chamber, and air-cell chamber.
4. F
Gasoline direct Injection
This document summarizes key aspects of gasoline direct injection (GDI) engine technology. It discusses the timeline of fuel supply systems from carburetors to port injection to direct injection. The main components of a GDI system are described as the engine control unit, sensors, high pressure fuel pump, and fuel injector. GDI works by directly injecting pressurized fuel into the combustion chamber, allowing for improved efficiency and reduced emissions compared to port fuel injection. Benefits of GDI engines include increased power and torque, reduced fuel consumption and CO2 emissions, and ability to meet future emissions standards.
Combustion in si engine
Combustion in an SI engine occurs in three stages:
1. The ignition lag stage is the delay between the spark and noticeable pressure rise from combustion. This allows the fuel-air mixture to heat up to its self-ignition temperature.
2. In the flame propagation stage, the flame front travels across the combustion chamber, releasing energy and increasing pressure.
3. The afterburning stage finishes combusting any remaining unburnt fuel-air mixture after the flame front passes.
Combustion Chambers in CI Engine
This document summarizes different types of combustion chambers used in compression ignition (CI) engines. It describes direct injection combustion chambers like shallow depth, hemispherical, cylindrical, and toroidal chambers. It also describes indirect injection combustion chambers like swirl, pre-ignition, and air-cell chambers. Each type of chamber is briefly explained along with advantages it provides in fuel combustion. Direct injection chambers inject fuel directly into the cylinder while indirect injection chambers use a pre-chamber to improve combustion.
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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.
MULTI-POINT FUEL INJECTION SYSTEM
Multipoint fuel injection (MPFI) systems provide better control of the air-fuel ratio compared to carburetors. MPFI systems use multiple fuel injectors, with one injector per cylinder, to inject fuel into the engine's intake ports or manifold. This allows supplying the optimum air-fuel ratio to each cylinder for all operating conditions. MPFI systems are electronically controlled using sensors to monitor various engine parameters and optimize fuel delivery and emissions performance. While more complex than carburetors, MPFI systems improve fuel efficiency, power, and reduce emissions.
Fuel supply system in SI engines
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The document discusses the purpose and components of engine lubrication systems. It describes three main types of lubrication systems - wet sump, dry sump, and mist lubrication. Wet sump systems are most common and utilize an oil pan and pump to circulate oil through the engine. Dry sump systems separate the oil reservoir from the engine using external tanks and pumps. Mist lubrication mixes oil with fuel for two-stroke engines. The properties, types, additives, and viscosity ratings of engine lubricating oils are also outlined.
Carburetor
The document describes the components and systems of a carburetor that allow it to provide the correct air-fuel mixture to an engine under varying operating conditions. A simple carburetor can only supply the proper mixture at one throttle position. Additional systems like the idling, auxiliary port, power enrichment, and accelerating pump systems allow the carburetor to adjust the fuel flow for different loads, speeds, and rates of acceleration. These systems provide richer mixtures for idling, acceleration, and high power demands and leaner mixtures for cruising to improve fuel economy.
TYPES OF CARBURETORS
A carburetor mixes air and fuel for combustion in an internal combustion engine. It contains several main parts including a venturi, float chamber, nozzles, and throttle valve. A carburetor uses venturi suction to draw fuel from the float chamber and mix it with air to supply the engine. The main types are updraft, downdraft, and horizontal based on airflow direction. Carburetors provide fuel metering and air-fuel ratio control for engines. While simpler than fuel injection, carburetors are less precise at mixing fuel and air.
Stratified-charge-engine-ppt
A stratified charge engine provides a rich air-fuel mixture close to the spark plug to promote ignition, while using a lean mixture for the remainder of the cylinder. This allows for higher compression ratios and leaner mixtures than conventional engines, improving fuel efficiency. The overall air-fuel ratio can reach 40:1 to 50:1. While injectors increase costs, fuel efficiency gains are offsetting this. At high loads efficiency matches conventional engines due to a stoichiometric mixture. High variability can disrupt stratified mixture formation and reduce combustion if the rich area is not near the spark.
Combustion SI Engines - Unit-III
The document discusses combustion in spark-ignition (SI) engines. It defines combustion as a chemical reaction in which fuel combines with oxygen, liberating heat energy. In an SI engine, fuel and air are mixed and inducted into the cylinder where combustion is initiated by a spark at the spark plug near the end of the compression stroke. There are three stages of combustion: ignition lag, flame propagation, and after burning. Abnormal combustion phenomena like pre-ignition and knocking can occur if conditions are not suitable. Factors like turbulence, fuel-air ratio, temperature and pressure, compression ratio, and engine variables affect the flame speed and combustion process.
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.
Ignition systems
The ignition system uses a battery, ignition coil, distributor, and spark plugs to generate a spark that ignites the fuel-air mixture in the engine's cylinders. The coil transforms a low voltage current from the battery into a high voltage spark. The distributor routes the spark to each cylinder in the proper firing order. Common ignition system types include battery ignition systems that use a distributor and magneto systems that generate sparks without a battery. Newer distributorless ignition systems have one coil and spark plug per cylinder and fire all plugs within one crankshaft revolution.
IC engine emission and control of the emissions
This document discusses emissions and emission control strategies in internal combustion engines. It covers the formation of various emissions like carbon monoxide (CO), nitrogen oxides (NOx), hydrocarbons, and particulates in both spark ignition (SI) and compression ignition (CI) engines. It also discusses emission control methods like catalytic converters and exhaust gas recirculation (EGR). The key points are: emissions form due to incomplete combustion and high temperatures; a three-way catalytic converter controls CO, HC, and NOx using platinum, palladium and rhodium; and EGR reduces NOx by lowering combustion temperatures but increases particulates.
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A clutch connects and disconnects two rotating shafts to engage and disengage power transmission. It consists of a driving member, driven member, and operating member. Common types include friction clutches like disc and cone clutches. A single plate clutch uses one clutch plate between a flywheel and pressure plate to transmit power from an engine to transmission. A multi-plate clutch uses multiple plates to transmit higher torque for racing cars and heavy vehicles. A cone clutch uses two conical surfaces to transmit torque through wedging action and increased surface area. A centrifugal clutch engages more at higher speeds using centrifugal force and weighted arms to connect engine and output shafts.
Petrol injection system
This document discusses various types of fuel injection systems used in automotive engines. It begins by explaining the differences between carburetors and fuel injection systems. It then describes several types of petrol injection systems including single point injection, throttle injection, port injection, and multi-point fuel injection. Direct injection systems are also discussed, along with their advantages such as better vaporization and higher efficiency. The document outlines the components and functioning of multi-point fuel injection systems controlled by an electronic control module. It concludes by listing some advantages and disadvantages of using petrol injection systems compared to carburetors.
Abnormal combustion in si engines ppt ic engine
The document discusses abnormal combustion in spark ignition engines. Under normal combustion, the flame travels uniformly across the combustion chamber. Abnormal combustion occurs when combustion deviates from this normal behavior. Two types of abnormal combustion are pre-ignition and knocking. Pre-ignition occurs when the fuel-air mixture ignites before the spark, while knocking is the auto-ignition of unburned fuel late in the combustion cycle. Both pre-ignition and knocking can damage engine components and reduce performance. The causes of abnormal combustion include issues with fuel quality, engine parts, air quality, cooling, vibration, and operating environment.
CI engine
The document summarizes combustion in compression ignition (CI) engines. It describes how combustion occurs simultaneously in many spots in a non-homogeneous fuel-air mixture, controlled by fuel injection timing. The four stages of CI engine combustion are ignition delay, premixed combustion, mixing-controlled combustion, and late combustion. Factors like injection timing and fuel quality can affect the ignition delay period. Knock may occur if ignition delay is too long. The document provides diagrams to illustrate CI engine combustion processes and types.
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The document describes the purpose and components of an engine lubrication system. The key purposes of lubrication are to reduce friction, seal components, clean the engine, cool the engine, absorb shocks, and absorb contaminants. The main types of lubrication systems are mist/petrol-oil premix, autolube, splash, and pressure-fed wet or dry sump systems. The document outlines the components of these systems including the oil sump, pump, pickup, pressure regulator, filter, galleries, and indicators. It explains how each component functions to circulate oil through the engine.
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Electronic Fuel Injection System
Electronic fuel injection systems use an electric fuel pump and pressure, rather than engine vacuum, to spray fuel into the engine intake manifold or combustion chambers. This allows for more precise fuel delivery and improved engine performance compared to carbureted systems. Modern systems are computer-controlled and use various sensors to monitor engine operating conditions and adjust fuel delivery accordingly through fuel injectors.
Fuel Injection and Ignition
The document discusses fuel injection and ignition systems used in internal combustion engines. It describes how fuel injection works by forcibly pumping fuel through a nozzle, compared to carburetion which relies on air pressure. Common fuel injection types are multi-point and direct injection. Direct injection sprays fuel directly into combustion chambers, improving performance but increasing noise. Ignition can be via spark plugs or compression ignition. Digital twin spark plug ignition and digital twin spark swirl induction are also described. The technologies have improved engine efficiency while reducing emissions.
Electronic ignition system
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Fuel Injection System
The document discusses mechanical fuel injection systems for diesel engines. It describes the key components of such a system including the fuel tank, fuel feed pump, injection pump, injectors, and filters. It then covers four main types of injection systems - individual pump and nozzle, unit injector, common rail, and distributor systems. For each system, it explains the basic configuration and operation. The document also discusses injection pumps, governors, injectors, nozzles, spray formation, and equations for determining fuel velocity and injection rate. In summary, it provides an overview of the components, classification, and functioning of mechanical fuel injection systems for diesel engines.
Classification of fuel injectors and nozzle
Fuel injectors atomize the fuel into very fine droplets, and increases the surface area of the fuel droplets resulting in better mixing and subsequent combustion Atomization is done by forcing the fuel through a small orifice under high pressure.
UNIT-II-ENGINE AUXILIARY SYSTEMS.pptx
ENGINE AUXILIARY SYSTEMS
Electronically controlled gasoline injection system for SI engines, Electronically controlled diesel injection system (Unit injector system, Rotary distributor type and common rail direct injection system), Electronic ignition system (Transistorized coil ignition system, capacitive discharge ignition system), Turbo chargers (WGT, VGT), Engine emission control by three way catalytic converter system, Emission norms (Euro and BS).
UNIT-II-ENGINE AUXILIARY SYSTEMS.pptx
Electronically controlled gasoline injection system for SI engines – Electronically controlled diesel injection system – unit injector system, rotary distributor type and common rail direct injection system – Electronic ignition system: transistorized coil ignition system, capacitive discharge ignition system – Turbochargers - waste gate turbocharger, variable geometry turbocharger – engine emission control by three way catalytic converter system – emission norms (Euro, BS).
UNIT-II-ENGINE AUXILIARY SYSTEMS &TURBOCHARGER
Electronically controlled gasoline injection system for SI engines, Electronically controlled diesel injection system, Unit injector system, Rotary distributor type and common rail direct injection system, Electronic ignition system - Transistorized coil ignition system, capacitive discharge ignition system, Turbo chargers -Waste Gate Turbocharger, Variable Geomentry Turbocharger, Engine emission control by three way catalytic converter system, Emission norms (Euro and BS).
ME6016 ADVANCED I.C.ENGINES
This document discusses various types of fuel injection systems for spark ignition and compression ignition engines. It describes the different stages of combustion in diesel engines including ignition delay, rapid combustion, mixing controlled combustion, and late combustion. It also discusses factors that affect combustion like temperature, pressure, composition, and design of the combustion chamber. The document outlines different types of diesel fuel injection systems including mechanical and electronic systems. It describes the purpose and workings of fuel injection pumps, nozzles, and catalytic converters.
Fuel injection and Parts. uses in engine
mechanical Engineering:- Engine part used for Fuel Injecting purposes.
types of Fuel injection
Tpes of nozzels
Fuel injection
The document discusses fuel injection systems used in internal combustion engines. It describes the key components of a fuel injector including the nozzle, needle valve, and spring. It explains the differences between mechanical and electronic fuel injectors. Direct injection systems mix fuel and air in the cylinder, while indirect injection systems mix in the intake manifold. The document outlines the advantages of fuel injection over carburetion such as improved engine performance and fuel metering.
2161902150123119053-170323180029.pdf
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 details 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 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 time fuel delivery to each cylinder.
Fuel injection in ci engines
The document discusses the objectives and components of a diesel engine fuel supply system. It aims to meter and inject fuel precisely according to engine speed and load. Key components include pumping elements to transfer fuel, metering elements to measure fuel rate, distributing elements to divide fuel among cylinders, and injectors to atomize fuel in the combustion chamber. Modern common rail systems use a high pressure pump and rail to precisely time and control fuel injection.
Chapter 9 Mechanical Injection Systems.pdf
The document discusses mechanical fuel injection systems for diesel engines. It begins by introducing fuel injection systems and their importance for engine performance and combustion control. It then covers various types of mechanical injection systems, including individual pump and nozzle systems, unit injector systems, common rail systems, and distributor systems. The key components and working principles of these systems are described. Jerk pumps and distributor pumps are discussed as the main types of injection pumps. The document provides a detailed overview of mechanical diesel injection systems.
Introduction of fuel system kvg
This document provides an introduction to fuel systems for tractors and farm machinery. It defines fuel as a substance that produces energy when consumed by an engine. The key components and workings of fuel systems for spark ignition (SI) and compression ignition (diesel) engines are described. For SI engines, the fuel system includes a fuel tank, filter, carburetor and intake manifold. The carburetor mixes air and fuel. For diesel engines, the high-pressure system includes a fuel tank, filter, injection pump and injectors, which supply precisely metered fuel into the combustion chamber. Fuel quality and proper maintenance of filters are discussed as important for optimal system operation.
Fuel injection in si engine by shubham sanjay sorate ph.no.8421592224
This document discusses different types of fuel injection systems used in gasoline engines, including carburetor port injection (MPFI), direct injection (GDI), and throttle and port injection. It provides details on the advantages of fuel injection over carburetors, such as more precise fuel metering and better integration with engine control systems. The document also explains the differences between indirect injection which injects fuel before the combustion chamber, and direct injection which injects fuel directly into the chamber. It compares various fuel injection systems and discusses their working and advantages.
Lecture No. 04_Fuel System.pdf
1) The document discusses fuel and fuel systems for internal combustion engines. It describes the common fuels used like petrol, diesel, and their properties.
2) It then discusses the quality of fuels and how properties like volatility, calorific value, and ignition quality affect engine performance. It also covers detonation and pre-ignition issues.
3) The fuel systems for spark ignition engines and diesel engines are described. For spark ignition engines this includes the fuel tank, filter, lift pump, carburetor, and intake manifold. For diesel engines it outlines the fuel tank, primary and secondary filters, lift pump, injection pump, injectors, and high pressure lines.
pptmpfi.pptx
The document discusses multi-point fuel injection (MPFI) systems for gasoline engines. It describes two main types - port injection and throttle body injection. Port injection involves fuel injectors placed in the intake manifold near each intake port to spray fuel into the air-fuel mixture for each cylinder. Throttle body injection uses a single injector mounted above the throttle body to inject fuel into the incoming air. The document provides diagrams to illustrate the components and operation of each type of MPFI system.
ICE_Handout(5) for CI fuel injection.pdf
FUEL INJECTION SYSTEM FOR CI ENGINES
The function of a fuel injection system is to meter the appropriate quantity of fuel for the given
engine speed and load to each cylinder, each cycle, and inject that fuel at the appropriate time in the
cycle at the desired rate with the spray configuration required for the particular combustion
chamber employed. It is important that injection begin and end cleanly, and avoid any secondary
injections. To accomplish this function, fuel is usually drawn from the fuel tank by a supply pump,
and forced through a filter to the injection pump. The injection pump sends fuel under pressure to
the nozzle pipes which carry fuel to the injector nozzles located in each cylinder head. Excess fuel
goes back to the fuel tank. CI engines are operated unthrottled, with engine speed and power
controlled by the amount of fuel injected during each cycle. This allows for high volumetric
efficiency at all speeds, with the intake system designed for very little flow restriction of the
incoming air.
FUNCTIONAL REQUIREMENTS OF AN INJECTION SYSTEM
For a proper running and good performance of the engine, the following requirements must be met
by the injection system:
• Accurate metering of the fuel injected per cycle. Metering errors may cause drastic variation
from the desired output. The quantity of the fuel metered should vary to meet changing speed
and load requirements of the engine.
• Correct timing of the injection of the fuel in the cycle so that maximum power is obtained.
• Proper control of rate of injection so that the desired heat-release pattern is achieved during
combustion.
• Proper atomization of fuel into very fine droplets.
• Proper spray pattern to ensure rapid mixing of fuel and air.
• Uniform distribution of fuel droplets throughout the combustion chamber
• To supply equal quantities of metered fuel to all cylinders in case of multi-cylinder engines.
• No lag during beginning and end of injection i.e., to eliminate dribbling of fuel droplets into the
cylinder.
TYPES OF INJECTION SYSTEMS
There are basically two types of injection systems: Air injection system and solid injection system.
Air Injection System: In this system, fuel is forced into the cylinder by means of compressed air.
This system is little used nowadays, because it requires a bulky multi-stage air compressor. This
causes an increase in engine weight and reduces the brake power output further. One advantage that
is claimed for the air injection system is good mixing of fuel with the air resulting in higher mean
effective pressure. Another advantage is its ability to utilize fuels of high viscosity which are less
expensive than those used by the engines with solid injection systems. These advantages are off-set
by the requirement of a multistage compressor thereby making the air-injection system obsolete.
Solid Injection System: In this system the liquid fuel is injected directly in.
Unit Injector System: In this syst
SYSTEMS OF IC ENGINE- Fuel System.pptx
The document discusses the fuel system of internal combustion (IC) engines. It describes the key components and functions of the fuel system in diesel engines, including the fuel filter, fuel injection pump, fuel injector, combustion chamber, turbocharger, and governor. It also briefly discusses the fuel supply system in spark ignition engines. The fuel system's purpose is to supply clean fuel to the engine cylinders so it can be combusted to produce energy to run the engine.
Carburetor & EFI system, Diesel Fuel Pump, Atomizer & Spark Plug
The document discusses various fuel injection systems, including carburetors, electronic fuel injection (EFI), diesel fuel pumps, atomizers, and spark plugs. It provides details on how each component works, such as using Bernoulli's principle for carburetors and high pressure nozzles for fuel injectors. The document also compares carburetion to fuel injection and describes different types of EFI systems like single point and multi point injection. Atomizers are defined as breaking fuel into fine particles while spark plugs ignite compressed fuel mixtures using an electric spark.
L -7 -Fuel Supply system.pptx
The document discusses fuel and fuel supply systems for internal combustion engines. It describes the common fuels used in engines as petrol, power kerosene, and high speed diesel oil. It then discusses the properties that determine fuel quality like volatility, calorific value, and ignition quality. For diesel engines specifically, it describes the components of the fuel supply system including the fuel tank, filters, lift pump, injection pump, and injectors. The injection pump pressurizes and meters the fuel supply to each cylinder at the proper time.
Gasoline direct injection system
This document discusses different fuel injection systems used in internal combustion engines, including the advantages of gasoline direct injection (GDI) over traditional carburetors and port fuel injection. It describes how GDI works by injecting fuel directly into the combustion chamber under high pressure, allowing for improved fuel efficiency and reduced emissions compared to earlier fuel delivery methods. The key components of a GDI system are an engine control unit, sensors, high-pressure fuel pump, and fuel injectors. GDI provides benefits like lower fuel consumption, increased power and torque, and helps engines meet tighter emission standards.
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Fuel injection system in c.i engines
- 1. Shankersinh Vaghela Bapu Institute Of Technology Department of Mechanical Internal Combustion Engines (2161902) Prepared By Rahul Someshvar 13ME119 Utsav Thakor 13ME120 Vagish Tripathi 13ME121 Fuel Supply System For C.I Engine
- 2. Fuel injection system for diesel engine 2
- 3. Air Injection System Here, the fuel is injected by means of high pressure air at about 70 bar into the combustion chamber. It needs compressor to supply compressed air & the fuel pump to draw the desired fuel from fuel tank both to be supplied to the injector. Advantages I. Provides good atomization of fuel. II. Heavy viscous fuel can be used . Disadvantages I. Air compressor needs extra maintenance. II. System is bulky and expensive. 3
- 4. Solid or Airless Injection System Here, fuel is directly injected into the cylinder without the aid of compressed air. The fuel does not vaporize at ordinary temperatures & also the fuel supplied needs to be atomized & mix with air, it requires high injection pressure over 70 bar. Types of solid Fuel Injection System I. Mechanical Injection II. Electronic Injection Mechanical Injection is further classified as: a) Common rail direct injection (CRDI) system b) Individual pump system c) Distributor system 4
- 5. Common-Rail Direct Injection (CRDI) System 5
- 6. Advantages I. This system is simple & easy to maintenance. II. It Can control fuel supply as per load & speed of engine. III. It has only one pump needed for a multi-cylinder engine. Disadvantages I. System needs accurate design . II. There is a chance of developing leakage at the valve seat. III. Injection pressure used are in range of 200 – 300 bar pressure. 6
- 9. Electronic Injection It uses the electronic sensors for precise metering of fuel. The sensors feed the data to an electronic control unit (ECU) which determines the amount of fuel to be injected depending upon the engine speed & throttle position. Advantages I. Reduces fuel consumption & gives better mileage. II. Reduces exhaust emissions. III. Improves engine power. IV. Prevents overheating of engine during braking & idling conditions of the engine. 9
- 10. Fuel Injection Pumps Objectives I. To deliver accurately metered quantity of fuel. II. High pressures in the range of 100 bar to 300 bar needed depending upon the compression ratio of engine to achieve required atomization of fuel. III. Fuel must be injected and terminated at the correct timing. Types of Injection Pumps I. Jerk type injection pump ( Bosch fuel injection pump ) II. Distributor type injection pump 10
- 11. Bosch Fuel Injection Pump 11
- 12. 12
- 13. Distributor Type Fuel Pump 13
- 14. Nozzles Nozzle is the part of an injector through which the fuel is injected into the combustion chamber. Design of nozzle should be such that the liquid fuel leaving the nozzle is atomized which helps in proper mixing of fuel & air. Type of nozzle used in an injector depends on the type of combustion chamber used in an engine. Various types of Nozzles: I. The pintle nozzle II. The single hole nozzle III. The multi-hole nozzle IV. The pintaux nozzle 14
- 15. Pintle Nozzle I. Have thin ends in the form of pin. II. Shape of the pin can be varied. III. Hollow cylindrical jet or a wide angle spray can be obtained. Specifications: Advantages I. It avoids dribbling of fuel in the combustion chamber 15
- 16. Single hole nozzle Specifications I. A single hole is bored at bottom tip of nozzle. II. Hole diameter is of 0.2 mm. III. Spray cone angle obtained ranges from 5-20 degrees. Advantages I. Suitable for open combustion chamber Disadvantages I. Gives small spray cone angle. II. Have a tendency to dribble. 16
- 17. Multiple hole Nozzle Specifications I. Have multiple holes bored at the tip of the nozzle. II. Number of holes vary from 4 to 8. III. Diameter vary from 0.2 mm to 0.35 mm. Advantages I. It ensures proper mixing of fuel in the chamber. Disadvantages I. It requires high injection pressures in the range of 180 to 200 bar. 17
- 18. Pintaux Nozzle Specifications I. Pintle type of nozzle with an auxiliary hole drilled in it. II. Auxiliary hole injects fuel in a direction upstream the direction of air before the main injection starts. Advantages I. It reduces the delay period due to better heat transfer between fuel & air. II. It results into better cold starting performance. 18
- 19. 19