# Describe how a rack and pinion steering, a parallelogram steering, and a worm and roller system operate.

### Automotive Technology: A Systems A...

6th Edition
Jack Erjavec + 1 other
Publisher: Cengage Learning
ISBN: 9781133612315

### Automotive Technology: A Systems A...

6th Edition
Jack Erjavec + 1 other
Publisher: Cengage Learning
ISBN: 9781133612315

#### Solutions

Chapter
Section
Chapter 47, Problem 1RQ
Textbook Problem

## Describe how a rack and pinion steering, a parallelogram steering, and a worm and roller system operate.

Expert Solution
To determine

The way of operation of the rack and pinion steering, parallelogram steering, and worm and roller system.

The rack and pinion steering operates in a way which helps the wheels in changing its directions.

The parallelogram steering operates in a way which helps in good steering and suspension.

The worm and roller system operates in a way which helps in steering the vehicle by using the movement of pitman arm in left or right direction

### Explanation of Solution

The rack and pinion steering operates in a way which helps the wheels in changing its directions. This arrangement does not have any pitman arm, idler arm assembly, and centre link. It’s the rack in it who fulfils the need of centre link. The movement of rack controls the tie-rod, that is, it pushes and pulls the tie-rod which helps in changing the directions of wheel. Further, at the column end of a steering, the teeth of a small pinion get meshed with the gear teeth of rack.

The parallelogram steering operates in a way which helps in good steering and suspension. This arrangement has some components also which are pitman arm, idler arm, links, and tie-rods. It is present on both behind and ahead the front wheel suspension.

The worm and roller system is like parallelogram steering except one thing that, in this system, the re-circulating ball has one roller which replaces the balls and ball nut. This system is better for small cars. This system operates in a way which helps in steering the vehicle by using the movement of pitman arm in left or right direction which is caused by the shaft. This shaft comes in movement and turns due to the rotation of worm gear which is done by the steering shaft.

Conclusion:

Thus, the above describes a way of operation of the rack and pinion steering, parallelogram steering, and worm and roller system.

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