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Getting there in comfort

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Presentation on theme: "Getting there in comfort"— Presentation transcript:

1 Getting there in comfort
Suspension Getting there in comfort


3 Suspension system perform 6 basic functions:
Maintain correct vehicle ride height Reduce the effect of shock forces Maintain correct wheel alignment Support vehicle weight Keep the tires in contact with the road Control the vehicle's direction of travel

4 Front Suspension Dependent Independent

5 Dependent Front Suspension
Dependent front suspension uses a solid axle. Uses one steel or aluminum beam extending the width of the vehicle. The beam is held in place by leaf springs. solid axle is only used on heavy trucks, and off-road vehicles

6 Independent Front Suspension
Developed in the 1930's to improve vehicle ride control and riding comfort wheels to respond individually to road conditions sprung weight is reduced, creating a smoother ride. Twin I-Beam, Type 1 Coil Spring, Type 2 Coil Spring, Torsion Bar, Double Wishbone,

7 Twin I-Beam similar to the solid axle improves ride and handling
load carrying ability used on pickups, vans and four-wheel drive vehicles.

8 Type 1 Coil Spring 2 upper control arms 2 lower control arms
2 steering knuckles 2 spindles 2 upper ball joints 2 lower ball joints bushings coil springs Shock Absorbers short-arm/long-arm, or the parallel arm design

9 Type 2 Coil Spring coil spring is mounted on the upper control arm
top of the spring is attached to the frame. upper ball joint receives the weight of the vehicle and the force of the coil spring makes it the load carrier

10 Torsion Bar no coil or leaf springs
supports the vehicle weight and absorbs the road shock performs the same function as a coil spring: supports the vehicle's weight

11 Double Wishbone type of strut suspension
space saving benefits of a strut of the parallel arm suspension more aerodynamic hoodline portion of the strut forms a wishbone shape does not rotate when the wheels turn

12 Suspension Components
Springs Coil Leaf Torsion bar Torsion Bar Suspension Systems*

13 3 types of springs used on automobile suspensions
coil Lower Control Arm w/Strut rod leaf

14 Suspension Components II
Shock Absorbers purpose *** Dampen spring oscillation Types Direct acting Dual action telescopic

15 Components Spring Shock Stabilizer Control Arm Bushing Control Arm
Ball Joint

16 Components Upper Ball Joint Upper Control Arm Bushing
Spindle/Knuckle Lower Control Arm Lower Control Arm Bushing Stabilizer Strut Rod Lower Ball Joint

17 Springs Leaf

18 Leaf Springs

19 Springs Torsion Bars

20 Springs Transverse Torsion Bar

21 Shock Absorbers Should not leak oil Stop bouncing quickly
SLA- Short Long Arm

22 Shock Absorbers Shock Assist Gas Charged Air Shocks
Shock Absorber Ratio Electronically Controlled Shocks

23 Shocks

24 Springs Spring Rate Jounce Rebound Sprung Weight Un-sprung Weight
Coil Springs* Leaf Springs* Air Springs

25 MacPherson Struts NO upper control Arm! Spring around a shock absorber

26 Strut Construction Rod Nut Bearing Plate Upper Spring Seat Dust Shield
Strut Shaft Lower Spring Seat Strut Body

27 Control Arms

28 Ball Joints

29 Rear Suspension System
Live Axle Semi-Independent Independent

30 Solid Axle, Coil Spring Suspension (live)

31 Beam Axle, for FWD

32 Modified Beam Axle

33 Independent Rear Suspension

34 Semi-Independent Semi-Independent Service

35 Live-Axle Rear Suspension System
Leaf Spring Coil Spring Live Axle Servicing

36 Solid (Dummy) Axle

37 Electronically Controlled Suspension
Adaptive Suspension System Components

38 Suspension Problems Toe Camber Caster

39 Toe

40 Camber

41 Caster

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