How much do you know about chassis suspension? Is there a big difference between torsion beam and multi-link?

2023-12-27

Suspension is a familiar and mysterious component in a car. In some details, many car owners may not have a comprehensive understanding. If you use a professional explanation, it may seem very boring. So today we will introduce some things about chassis suspension. The main one is the difference between torsion beam and multi-link.

Classification and characteristics of 1. suspension

Suspension is roughly divided into two categories. One is an independent suspension in which two wheels work separately and do not interfere with each other. Multi-link is an independent suspension; the other is a non-independent suspension that directly connects two wheels., And the torsion beam belongs to the category of non-independent suspension.

We know that the characteristic of multi-link suspension is that each wheel operates independently, and one wheel will bear potholes on one side without being transmitted to the other side of the car, which in a certain sense ensures the comfort of the occupants in the car. However, this process is more complicated and takes up space, and the control will be weaker, of course the price is also high;

The torsion beam suspension is characterized by simple structure, no space, and strong maneuverability, and the important thing is low cost, so it is also used by a wide range of models.

Pros and Cons of 2. Torsion Beams and Multi-links

So, is the low-cost, small-space torsion beam suspension really bad? And the multi-link independent suspension must be very good, very "independent" stand-alone? In fact, otherwise, each suspension has its own characteristics, should be combined with specific models of use, equipped with the corresponding suspension, to provide the final solution.

For example, some vehicles that emphasize control will use torsion beam suspension, such as Honda's signature model Civic Type-R and Golf 7. If you use independent suspension, although it is comfortable, it will affect the integrity of the body, which is what we often say. Do not control, don't think about comfort if you want to control.

So is the independent suspension necessarily independent? If the requirements are strictly distinguished, some multi-links are not purely independent suspensions. Because the premise of independent suspension is that the two wheels operate independently and do not interfere with each other, but on some models, in order to prevent the lateral deviation of the wheels under the independent suspension, a stabilizer bar is added between the two wheels. With such a connection, it naturally cannot be regarded as independent suspension.

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