Unit 5A Homework – Suspension System Fundamentals

Name ______I recommend you watch the videos. They present this material better than the text!

ASE4:Susp&Steering|SuspensionSystems|Suspension fundamental principles|

1) What is the difference between sprung and unsprung vehicle mass?

2) Why is it best to have minimal unsprung mass?

3) How are coil springs and torsion bars similar in how they absorb the force of road impact?

4) For vehicles using leaf springs, what components locate the wheel from longitudinal forces?

5) For vehicles using coil springs, what components locate the wheel from longitudinal and lateral forces?

6) Why is excessive spring oscillation not acceptable for a modern vehicle?

7) What prevents excessive spring oscillation?

ASE4:Susp&Steering|SuspensionSystems|Types of suspension|

8) What are the components that make up a basic suspension system?

9) What are the three basic types of springs used in automobile suspensions?

10) How do shock absorbers dampen spring oscillations?

11) What are the differences between a live and dead axle?

12) Identify the following components shown above, AND state their function.

A –

B –

C –

D –

E –

F –

13) What are the advantages of independent suspension over a solid axle?

14) What unit or component connects the front MacPherson strut to the lower control arm?

15) Some MacPherson strut suspensions use a stay bar (called a strut rod in the U.S.) to control the longitudinal forces of acceleration and braking. Why do some suspensions not need a stay bar? (how do these suspensions control longitudinal forces?)

16) What are the advantages of using an adaptive air suspension?

17) How does the adaptive air suspension keep the ride height constant?