Introduction to Automotive Engineering
by R. Sakthivel, Faisal O. Mahroogi, S. Narayan, S. Abudbaker, M. U. Kaisan, Youssef Alammari
Chapter 4Suspension System
4.1 Introduction
Suspension is the system that connects a vehicle to its wheels and allows relative motion.
4.2 Types of Suspension System
There are three types of height adjustable suspension which are:
- Mechanical
- pneumatic
- hydraulic system
Figure 4.1 Mechanical adjustable concept.
4.2.1 Mechanical System
This system needs manual adjustment to which can be used to vary a vehicle ride height.
4.2.2 Pneumatic System
Air has been used on vehicles at varying frequencies and with mixed success. Air systems can also be used as a means of achieving height adjustment in the vehicle. Air suspension has an added advantage in that the controller can also perform the task of leveling the car if height sensors are placed in each spring. Existing air springs do have the drawback that they cannot simply replace a coil spring in all their behavioral properties. While the properties of air suit heavy vehicle transport they are not as easily put to work underneath a light automobile. Their lack of popularity within smaller vehicles is also due to their elevated cost when compared to a coil spring.
4.2.3 Hydraulic System
The hydraulic system uses hydraulic to vary the height of the vehicle. The system uses pressurize fluid; due to different mechanism it can be by pump or pedal or other mechanism. Hydraulic system has no leaky seals, no variance with temperature ...