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AUTOMOBILE ENGINEERING.pptx

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MohammadKhalid89

Automobile engineering involves many key components. The basic structure includes the frame, suspension system, axles, and wheels/tires. The frame provides support and withstands various loads and stresses. There are three main types of frames: conventional, integral, and semi-integral. The power plant is the engine, which is typically an internal combustion engine. Engines can be classified based on the combustion type, number of strokes, fuel type, and cylinder configuration. Other important components include the transmission system, auxiliaries like cooling and lubrication systems, controls, and super-structure.

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AUTOMOBILE ENGINEERING COMPONENTS OF AUTOMOBILE ENGINEERING
COMPONENTS OF AN AUTOMOBILE • The basic structure • The power plant • The transmission system • The auxiliaries • The Controls • The Super-structure
The Basic Structure • The Basic structure consists of • a) Frame • b) Suspension system • c) Axles • d) Wheels and tyres
• A vehicle frame, also historically known as its chassis, is the main supporting structure of a motor vehicle to which all other components are attached, comparable to the skeleton of an organism. • Functions of Frame • To support chassis components & body • Withstand the static & dynamic load of different components of chassis • To withstand load of the body • To carry load • To withstand stresses caused due to uneven road conditions. • To withstand force caused due to turning of the vehicles &sudden braking or acceleration.
Have 3 different types • Conventional frame c)Semi Integral Frame
AUTOMOBILE ENGINEERING.pptx
AUTOMOBILE ENGINEERING.pptx
or Frame-less Construction • In this type of construction, there is no frame. It is also called unitized frame-body construction. In this case, the body shell and underbody are welded into single unit. The underbody is made of floor plates and channel and box sections welded into single unit. This assembly replaces the frame. This decreases the overall weight compared to conventional separate frame and body construction. • Integral Frame: This frame is used now a days in most of the cars. There is no frame and all the assembly units are attached to the body. All the functions of the frame carried out by the body itself. Due to elimination of long frame it is cheaper and due to less weight most economical also. Only disadvantage is repairing is difficult.
AUTOMOBILE ENGINEERING.pptx
Semi-integral Frame • In this case the rubber mountings used in conventional frame between frame and suspension are replaced by more stiff mountings. Because of this some of the vehicle load is shared by the frame also. This type of frame is heavier in construction. • Example : Popular in European and American car. • Semi - Integral Frame: In some vehicles half frame is fixed in the front end on which engine gear box and front suspension is mounted. It has the advantage when the vehicle is met with accident the front frame can be taken easily to replace the damaged chassis frame. This type of frame is used in FIAT cars and some of the European and American cars.
AUTOMOBILE ENGINEERING.pptx
The Power Plant • Engine is the power plant of the Automobile • The engine is the source of motive power to an automobile. Obviously it is very important part of the automobile because in the absence of engine the automobile may not move at all and its basic function of transporting passengers or goods would be defeated. • The power of the engine determines the working of the automobile or its power. In the same manner, the efficiency of engine determines the efficiency of automobile. • The engine, now-a-days, is invariably an internal combustion engine.
Classification of Engine • Based on type of combustion a) External Combustion Engine b) Internal Combustion Engine . Based on type number of strokes a) 2-Stroke Engine b) 4-Stroke Engine . Based on type of fuel a) S.I Engine b) C.I engine . Based on cylinder configuration a) Single cylinder b) Multi cylinder etc
Components of and IC engine
Additional… • In an internal combustion engine, total heat produced by the burning of fuel is not converted into work. Part of it causes over-all heating of engine which is undesirable. This heat is to be dissipated properly. Coolant in the form of air or water may be used to take away this heat. So an engine can be air cooled or water cooled. These days some chemicals have been developed which have cooling property and these remain unaffected for a longer period of time. These chemicals are being used as coolants and these do not require frequent replacement. Apart from their longer life they are more efficient also. • Similarly lubrication is another aspect to be taken care of in an engine requiring periodic attention from the user. The moving parts in an engine need regular lubrication to reduce unwanted friction. The chemistry of lubricant is now highly developed. There is standard rating for lubricants and for every purpose a specific lubricant is available.
AUTOMOBILE ENGINEERING.pptx

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AUTOMOBILE ENGINEERING.pptx

  • 1. AUTOMOBILE ENGINEERING COMPONENTS OF AUTOMOBILE ENGINEERING
  • 2. COMPONENTS OF AN AUTOMOBILE • The basic structure • The power plant • The transmission system • The auxiliaries • The Controls • The Super-structure
  • 3. The Basic Structure • The Basic structure consists of • a) Frame • b) Suspension system • c) Axles • d) Wheels and tyres
  • 4. • A vehicle frame, also historically known as its chassis, is the main supporting structure of a motor vehicle to which all other components are attached, comparable to the skeleton of an organism. • Functions of Frame • To support chassis components & body • Withstand the static & dynamic load of different components of chassis • To withstand load of the body • To carry load • To withstand stresses caused due to uneven road conditions. • To withstand force caused due to turning of the vehicles &sudden braking or acceleration.
  • 5. Have 3 different types • Conventional frame c)Semi Integral Frame
  • 8. or Frame-less Construction • In this type of construction, there is no frame. It is also called unitized frame-body construction. In this case, the body shell and underbody are welded into single unit. The underbody is made of floor plates and channel and box sections welded into single unit. This assembly replaces the frame. This decreases the overall weight compared to conventional separate frame and body construction. • Integral Frame: This frame is used now a days in most of the cars. There is no frame and all the assembly units are attached to the body. All the functions of the frame carried out by the body itself. Due to elimination of long frame it is cheaper and due to less weight most economical also. Only disadvantage is repairing is difficult.
  • 10. Semi-integral Frame • In this case the rubber mountings used in conventional frame between frame and suspension are replaced by more stiff mountings. Because of this some of the vehicle load is shared by the frame also. This type of frame is heavier in construction. • Example : Popular in European and American car. • Semi - Integral Frame: In some vehicles half frame is fixed in the front end on which engine gear box and front suspension is mounted. It has the advantage when the vehicle is met with accident the front frame can be taken easily to replace the damaged chassis frame. This type of frame is used in FIAT cars and some of the European and American cars.
  • 12. The Power Plant • Engine is the power plant of the Automobile • The engine is the source of motive power to an automobile. Obviously it is very important part of the automobile because in the absence of engine the automobile may not move at all and its basic function of transporting passengers or goods would be defeated. • The power of the engine determines the working of the automobile or its power. In the same manner, the efficiency of engine determines the efficiency of automobile. • The engine, now-a-days, is invariably an internal combustion engine.
  • 13. Classification of Engine • Based on type of combustion a) External Combustion Engine b) Internal Combustion Engine . Based on type number of strokes a) 2-Stroke Engine b) 4-Stroke Engine . Based on type of fuel a) S.I Engine b) C.I engine . Based on cylinder configuration a) Single cylinder b) Multi cylinder etc
  • 14. Components of and IC engine
  • 15. Additional… • In an internal combustion engine, total heat produced by the burning of fuel is not converted into work. Part of it causes over-all heating of engine which is undesirable. This heat is to be dissipated properly. Coolant in the form of air or water may be used to take away this heat. So an engine can be air cooled or water cooled. These days some chemicals have been developed which have cooling property and these remain unaffected for a longer period of time. These chemicals are being used as coolants and these do not require frequent replacement. Apart from their longer life they are more efficient also. • Similarly lubrication is another aspect to be taken care of in an engine requiring periodic attention from the user. The moving parts in an engine need regular lubrication to reduce unwanted friction. The chemistry of lubricant is now highly developed. There is standard rating for lubricants and for every purpose a specific lubricant is available.