This PPT on automobile part

1. TSSM’S
BHIVARABAI SAWANT COLLEGE OF ENGINEERING AND
RESEARCH , POLYTECHNIC, NARHE,PUNE-41
(ACADEMIC YEAR: 2022-23)
Department of Mechanical Engineering
Course : Automobile Engineering (22656)
Unit III : Automobile Control Systems
( 08 Marks)
C656.3 : Select Suitable braking and steering system for
different application

2. CLASSIFICATION OF AUTOMOBILE
1. With respect to use
a) Moped
b) Scooter
c) Motor Cycle
d) Three Wheeler
e) Four wheeler
f) Transport Vehicle
g) Goods carrier – Truck, Trailer
2. With Respect to Capacity
a) Heavy transport vehicle
b) Light Transport Vehicle
3. With Respect to Fuel Used:
a) Petrol vehicle
b) Diesel vehicle
c) CNC vehicle
d) LPG vehicle
e) Solar vehicle

3. 4. With respect to make and Manufacturing
a) Truck
b) Station wagon
c) Car
d) Motor Cycle
e) Scooter
5. With respect to Wheel and Axle
a) Two Wheeler
b) Three Wheeler
c) Four Wheeler
d) Six Wheeler
e) Multi Wheeler
6. With Respect to Drive
a) According to sitting position of driver
b) According to driving axle
7. With respect to Suspension System
a) Conventional suspension
b) Independent suspension
8. With respect to transmission
a) Conventional
b) Semi automatic
c) Automatic

4. 9. With respect to fitting of Engine
a) Engine at front
b) Engine at back
c) Engine fitted in front but crosswise
d) Bus chassis
e) Engine fitted at center of chassis

5. Layout of Chassis Frame and Its main Components

6. Components of automobile chassis
• Frame
• Engine:- It provides motive power to perform the various
function of vehicle.
• Transmission System:-
a) Clutch:- connect or disconnect the engine power
b) Gearbox:- To obtain the various fixed torque ratio acc. To
requirement. And also helps to reverse the vehicle.
c) Universal joint and propeller shaft:- it transmit the torque
from the gear box shaft to the final drive and adjust the length
when vehicle bump or shock.
d) Differential:- to turn the vehicle through right angle

7. e) Axle:- it is a weight carrying portion whether it may be front or
rear. It takes vertical load due to weight of body, shock load during
braking or driving. Side thrust during cornering.
f) Wheel and tyre:- To take vehicle load, provide cushioning effect
and cope with the steering control.
• Suspension System:- it prevent the vehicle body from the road
shock which are in rolling, bouncing and pitching. It provides
comfort to passenger and reduce the stress in frame These are of
two types.
a) Conventional System:- Leaf spring are attached to the rigid axle
b) Independent system:- Here no rigid axle beam and each wheel is
free to move vertically without any reaction on the other wheel.

8. • Controls:-
a) Steering system:- it is used to change the direction of motion of
the vehicle by turning the front wheel.
b) Brake System:- This system provides safety to the vehicle by
stopping quickly or slow down while going down slop.
c) Engine Control:- with demand of fuel supply and accelerator
pedal.
• Electrical controls:-
a) Supply system:- Battery
b) The starting relay
c) The ignition system:- Battery or Magneto- ignition System.
d) Other:- driving light, signalling, reverse light, wiper etc.

9. •Radiator:-
It is a device used to recool the hot engine cooling water
for recirculation purpose.

10. Framed and frameless vehicle

13. Vehicle Layout

14. Front Engine Rear Wheel Drive:

15. Advantages of FERWD

16. Disadvantages of FERWD

17. FEFWD
Front Engine Front Wheel Drive:

19. Advantages of FEFWD

20. Disadvantages of FEFWD

21. Rear Engine Rear Wheel Drive:

22. Advantages of RERWD

23. Disadvantages of RERWD

25. Advantages of 4WD

26. Disadvantages of 4WD

27. Function of chassis
• To support the load of the body, engine, clutch and gear box
etc.
• To withstand the forces caused due to the sudden braking and
acceleration of the vehicle.
• To carry the load of the passengers or goods carried in the
body.
• To withstand the stress caused due to the bad road condition.

29. Requirements of Automobile Chassis
1. Light in weight
2. Have minimum number of components.
3. Withstand vibrations while in motion.
4. Uniformly distributed load.
5. Cheap and easy in manufacturing.
6. Offer minimum resistance to air.
7. Have long fatigue life.

30. Types of chassis
•Full forward chassis
•Semi-forward chassis
•Bus Chassis
•Engine at front chassis
•Engine fitted at rear
•Engine mounted at center

31. Frame
• Load coming on frame
• Purpose of chassis frame
• Construction of frame
a. Channel section
b. Box Section
c. Tubular Section
Advantages of Frameless Construction
Disadvantages of Frameless Construction

32. Types of frames
•Conventional Frame
•Integral Frame
•Semi-integral Frame

35. Nomenclature of car body

36. Body Construction
1. Floor assembly
2. Center pillar and Roof assembly
3. Front end assembly

38. Types of body

43. CNG and LPG fuel characteristics

44. Introduction to aerodynamic body shape
• Necessity of Aerodynamic Shape of Body
• Features of Aerodynamic Body Shape of car to improve the Average
of vehicle
• Advantages of Aerodynamic Shape of Body

45. Advantages
• More fuel efficiency
• Good Aesthetics and stylish appearance of car
• More stability of car at higher speed
• Reduces noise level
• Reduce air resistance or air drag
• Reduce driver effort to drive vehicle
• Improve speed of vehicle
• Reduce running cost of vehicle

46. Aerodynamic shape and air resistance of a
vehicle
Air Resistance Depends on :

47. Forces and moments acting on vehicle body

48. Basic terms related with car Aerodynamics
• Aerodynamic Drag:

49. • Side Force:
• Lift Forces:

50. • Skin Friction:
• Form Drag (Profile Drag):
• Yawing Movement (Bouncing )

51. Working of petrol engine power plant
1. Suction Stroke
2. Compression Stroke
3. Expansion or power stroke
4. Exhaust Stroke

52. Electric vehicles

53. Hybrid electric vehicle

54. THE END