CME380 AUTOMOBILE ENGINEERING QAB
GRT INSTITUTE OF ENGINEERING
AND TECHNOLOGY
DEPARTMENT OF MECHANICAL ENGINEERING
CME380 - AUTOMOBILE ENGINEERING
PART A: 2 MARKS
PART B: 16 MARKS
, CME380 AUTOMOBILE ENGINEERING
CME380 AUTOMOBILE ENGINEERING L T P C
3 0 0 3
COURSE OBJECTIVES
1 To study the construction and working principle of various parts of an automobile.
2 To study the practice for assembling and dismantling of engine parts and transmission system
3 To study various transmission systems of automobile.
4 To study about steering, brakes and suspension systems
5 To study alternative energy sources
UNIT – I VEHICLE STRUCTURE AND ENGINES 9
Types of automobiles vehicle construction and different layouts, chassis, frame and body, Vehicle
aerodynamics (various resistances and moments involved), IC engines – components-functions and
materials, variable valve timing (VVT).
UNIT – II ENGINE AUXILIARY SYSTEMS 9
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 – III TRANSMISSION SYSTEMS 9
Clutch-types and construction, gear boxes- manual and automatic, gear shift mechanisms, Overdrive, transfer
box, fluid flywheel, torque converter, propeller shaft, slip joints, universal joints, Differential and rear axle,
Hotchkiss Drive and Torque Tube Drive.
UNIT – IV STEERING, BRAKES AND SUSPENSION SYSTEMS 9
Steering geometry and types of steering gear box-Power Steering, Types of Front Axle, Types of
Suspension Systems, Pneumatic and Hydraulic Braking Systems, Antilock Braking System (ABS),electronic
brake force distribution (EBD) and Traction Control.
UNIT – V ALTERNATIVE ENERGY SOURCES 9
Use of Natural Gas, Liquefied Petroleum Gas, Bio-diesel, Bio-ethanol, Gasohol and Hydrogen in Automobiles-
Engine modifications required –Performance, Combustion and Emission Characteristics of SI and CI engines
with these alternate fuels - Electric and Hybrid Vehicles, Fuel Cell Note: Practical Training in dismantling and
assembling of Engine parts and Transmission Systems should be given to the students.
TOTAL:45 PERIODS
OUTCOMES: At the end of the course the students would be able to
1. Recognize the various parts of the automobile and their functions and materials.
2. Discuss the engine auxiliary systems and engine emission control.
3. Distinguish the working of different types of transmission systems.
4. Explain the Steering, Brakes and Suspension Systems.
5. Predict possible alternate sources of energy for IC Engines.
,CME380 AUTOMOBILE ENGINEERING QAB
CME380 - AUTOMOBILE ENGINEERING
PART A
UNIT-1
VEHICLE STRUCTURE AND ENGINES
1. What are the functions of a frame? ( Dec’13, May’07, Dec 09)
o To support the chassis components and the body.
o To withstand static and dynamic loads without undue deflection or distortion.
o To carry the load of the passengers or goods carried in the body.
2. What loads are coming to axle? ( May ’06, 09, Dec 14)
Vertical bending load due to vehicle weight
Driving torque
Braking torque
Side thrust
3. Name the different kind of resistances to vehicle motion. ( Jun’07,Dec’ 11)
Air resistance
Rolling resistance
Gradient resistance
4. Why is the frame narrow at front? ( Dec’11, May’12)
The frame is narrowed at the front to provide a better steering lock. This also permits
smaller turning circle radius
5. What are the stresses to which the frame members are subjected to? ( Dec’13, May’10)
Frame longitudinal members – bending stress
Frame side members – twisting stress
6. Name few components of engine. ( Dec’05, May’06, Dec ‘09,’13)
1. Cylinder block 6. Connecting rod
2. Cylinder head 7. Crankshaft
3. Crankcase 8. Camshaft Valves Spark plug (in the case of petrol engine)
4. Cylinder 9. Fuel injector (in the case of diesel engine)
5. Piston
7. What are the types of frames? ( Dec’13, May’11, Dec 09)
Ladder type frame
Perimeter type frame
X type frame
Backbone type frame
8. What is meant by the term Chassis? ( Dec’12, May’10, Dec 09)
A complete vehicle without a body structure is known as Chassis. It comprises of
basic structure, power unit, transmission system, controls and auxiliaries.
9. What are the two types of cylinder liners? ( Dec’14, May’11, Dec 09)
Dry liners
Wet liners
10. What are the functions of piston rings? Types? ( Dec’14, May’12, Dec 08)
To provide a gas tight seal between the piston and cylinder liner to prevent the escape of gases
from top side of the piston to the underside.
Compression rings
Oil rings
, CME380 AUTOMOBILE ENGINEERING QAB
UNIT-2
ENGINE AUXILIARY SYSTEMS
1. What is Gasoline Direct Injection? ( Dec’05, May’06, Dec ‘09,’13)
The gasoline (petrol) is directly into the cylinder at the end of compression stroke as
such in diesel engines. This is called Gasoline Direct Injection (GDI)
2. Define common rail Direct injection system. ( Dec’13, May’07, Dec 09)
A common rail which is maintaining high fuel pressure is connected to individual fuel
injectors of a multi cylinder engine.
3. What is an Electronic ignition system? ( Dec’13, May’10)
The ignition system, in which the mechanical contact points are replaced by
electronic triggering and switching devices, is known as electronic ignition system.
4. What are the functions of Turbo chargers? ( Dec’14, May’11, Dec 09)
To produce more power from the same size engine
To provide the altitude compensation
To improve more complete combustion & hence less emissions
5. What are the advantages of petrol injection? ( May ’06, 09, Dec 14)
High power can be developed
It has quick starting characteristics
It has lowest specific fuel consumption
Less engine emissions than carbureted engines
6. What is super charging? ( Dec’14, May’12, Dec 08)
The process of increasing the density of inducted charge/ air is known as supercharging. It
is performed for the following reasons.
To produce more power from the same size engine
To provide the altitude compensation
To improve more complete combustion & hence less emissions
7. What is meant by carburetion in I.C engine? ( Dec’13, May’08, Dec’11)
The method of preparing the air-fuel mixture in an IC engine is known as carburetion.
The device used for this purpose is known as carburetor.
8. What are the advantages of electronic fuel injection system over conventional injection?
Cold starting is easier
High fuel economy
Less engine emissions
Quick response to varying engine operating conditions
9. What are the functions of generator and starting motor? ( Dec’13, May’10)
The function of the generator is to produce electricity to charge the battery. The starting
motor is used to crank the engine during the starting condition.
10. What is the function of an ignition system in I.C engine? (Dec’13, May’11, Dec 09)
The function of an ignition system is to ignite the air-fuel mixture at the end of the compression
stroke.
11. What are the chemicals used in battery?
PbO 2 – Positive plate
Pb – Negative plate
Electrolyte – Diluted Sulphuric acid
GRT INSTITUTE OF ENGINEERING
AND TECHNOLOGY
DEPARTMENT OF MECHANICAL ENGINEERING
CME380 - AUTOMOBILE ENGINEERING
PART A: 2 MARKS
PART B: 16 MARKS
, CME380 AUTOMOBILE ENGINEERING
CME380 AUTOMOBILE ENGINEERING L T P C
3 0 0 3
COURSE OBJECTIVES
1 To study the construction and working principle of various parts of an automobile.
2 To study the practice for assembling and dismantling of engine parts and transmission system
3 To study various transmission systems of automobile.
4 To study about steering, brakes and suspension systems
5 To study alternative energy sources
UNIT – I VEHICLE STRUCTURE AND ENGINES 9
Types of automobiles vehicle construction and different layouts, chassis, frame and body, Vehicle
aerodynamics (various resistances and moments involved), IC engines – components-functions and
materials, variable valve timing (VVT).
UNIT – II ENGINE AUXILIARY SYSTEMS 9
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 – III TRANSMISSION SYSTEMS 9
Clutch-types and construction, gear boxes- manual and automatic, gear shift mechanisms, Overdrive, transfer
box, fluid flywheel, torque converter, propeller shaft, slip joints, universal joints, Differential and rear axle,
Hotchkiss Drive and Torque Tube Drive.
UNIT – IV STEERING, BRAKES AND SUSPENSION SYSTEMS 9
Steering geometry and types of steering gear box-Power Steering, Types of Front Axle, Types of
Suspension Systems, Pneumatic and Hydraulic Braking Systems, Antilock Braking System (ABS),electronic
brake force distribution (EBD) and Traction Control.
UNIT – V ALTERNATIVE ENERGY SOURCES 9
Use of Natural Gas, Liquefied Petroleum Gas, Bio-diesel, Bio-ethanol, Gasohol and Hydrogen in Automobiles-
Engine modifications required –Performance, Combustion and Emission Characteristics of SI and CI engines
with these alternate fuels - Electric and Hybrid Vehicles, Fuel Cell Note: Practical Training in dismantling and
assembling of Engine parts and Transmission Systems should be given to the students.
TOTAL:45 PERIODS
OUTCOMES: At the end of the course the students would be able to
1. Recognize the various parts of the automobile and their functions and materials.
2. Discuss the engine auxiliary systems and engine emission control.
3. Distinguish the working of different types of transmission systems.
4. Explain the Steering, Brakes and Suspension Systems.
5. Predict possible alternate sources of energy for IC Engines.
,CME380 AUTOMOBILE ENGINEERING QAB
CME380 - AUTOMOBILE ENGINEERING
PART A
UNIT-1
VEHICLE STRUCTURE AND ENGINES
1. What are the functions of a frame? ( Dec’13, May’07, Dec 09)
o To support the chassis components and the body.
o To withstand static and dynamic loads without undue deflection or distortion.
o To carry the load of the passengers or goods carried in the body.
2. What loads are coming to axle? ( May ’06, 09, Dec 14)
Vertical bending load due to vehicle weight
Driving torque
Braking torque
Side thrust
3. Name the different kind of resistances to vehicle motion. ( Jun’07,Dec’ 11)
Air resistance
Rolling resistance
Gradient resistance
4. Why is the frame narrow at front? ( Dec’11, May’12)
The frame is narrowed at the front to provide a better steering lock. This also permits
smaller turning circle radius
5. What are the stresses to which the frame members are subjected to? ( Dec’13, May’10)
Frame longitudinal members – bending stress
Frame side members – twisting stress
6. Name few components of engine. ( Dec’05, May’06, Dec ‘09,’13)
1. Cylinder block 6. Connecting rod
2. Cylinder head 7. Crankshaft
3. Crankcase 8. Camshaft Valves Spark plug (in the case of petrol engine)
4. Cylinder 9. Fuel injector (in the case of diesel engine)
5. Piston
7. What are the types of frames? ( Dec’13, May’11, Dec 09)
Ladder type frame
Perimeter type frame
X type frame
Backbone type frame
8. What is meant by the term Chassis? ( Dec’12, May’10, Dec 09)
A complete vehicle without a body structure is known as Chassis. It comprises of
basic structure, power unit, transmission system, controls and auxiliaries.
9. What are the two types of cylinder liners? ( Dec’14, May’11, Dec 09)
Dry liners
Wet liners
10. What are the functions of piston rings? Types? ( Dec’14, May’12, Dec 08)
To provide a gas tight seal between the piston and cylinder liner to prevent the escape of gases
from top side of the piston to the underside.
Compression rings
Oil rings
, CME380 AUTOMOBILE ENGINEERING QAB
UNIT-2
ENGINE AUXILIARY SYSTEMS
1. What is Gasoline Direct Injection? ( Dec’05, May’06, Dec ‘09,’13)
The gasoline (petrol) is directly into the cylinder at the end of compression stroke as
such in diesel engines. This is called Gasoline Direct Injection (GDI)
2. Define common rail Direct injection system. ( Dec’13, May’07, Dec 09)
A common rail which is maintaining high fuel pressure is connected to individual fuel
injectors of a multi cylinder engine.
3. What is an Electronic ignition system? ( Dec’13, May’10)
The ignition system, in which the mechanical contact points are replaced by
electronic triggering and switching devices, is known as electronic ignition system.
4. What are the functions of Turbo chargers? ( Dec’14, May’11, Dec 09)
To produce more power from the same size engine
To provide the altitude compensation
To improve more complete combustion & hence less emissions
5. What are the advantages of petrol injection? ( May ’06, 09, Dec 14)
High power can be developed
It has quick starting characteristics
It has lowest specific fuel consumption
Less engine emissions than carbureted engines
6. What is super charging? ( Dec’14, May’12, Dec 08)
The process of increasing the density of inducted charge/ air is known as supercharging. It
is performed for the following reasons.
To produce more power from the same size engine
To provide the altitude compensation
To improve more complete combustion & hence less emissions
7. What is meant by carburetion in I.C engine? ( Dec’13, May’08, Dec’11)
The method of preparing the air-fuel mixture in an IC engine is known as carburetion.
The device used for this purpose is known as carburetor.
8. What are the advantages of electronic fuel injection system over conventional injection?
Cold starting is easier
High fuel economy
Less engine emissions
Quick response to varying engine operating conditions
9. What are the functions of generator and starting motor? ( Dec’13, May’10)
The function of the generator is to produce electricity to charge the battery. The starting
motor is used to crank the engine during the starting condition.
10. What is the function of an ignition system in I.C engine? (Dec’13, May’11, Dec 09)
The function of an ignition system is to ignite the air-fuel mixture at the end of the compression
stroke.
11. What are the chemicals used in battery?
PbO 2 – Positive plate
Pb – Negative plate
Electrolyte – Diluted Sulphuric acid
