Torsion bar suspension in the modern automotive industry
Why do you need?
Torsion bar suspension is an important option for any car along with spring, spring, pneumatic and others.Recall that the suspension of the car is needed in order to provide cushioning when connecting the wheels of the car and its carrier system. Suspension has another important function: it reduces the load on the wheels exerted by the road surface, stabilizing the position of the body when driving.
A little background
In the first half of the last century, approximately in the 1930s, the automobile manufacturer Volkswagen installed a curious structure at that time on its Beatle model. As it turned out, it is a kind of prototype of the modern torsion suspension. Later this construction was improved by the scientist Ledwink from Czechoslovakia, and then was installed on the Tatra cars.Then Ferdinand Porsche became interested in it, and already in the 40s he reproduced this idea of the professor and introduced it into mass production under the name "KDF-Wagen".Further, during the Second World War, this suspension was used in the construction of tanks and other military equipment. In the postwar years, Renault and Citroen became interested in torsions. However, soon, despite the simplicity of operation, the production of torsions became much more difficult, so they abandoned it. Currently, the torsion bar is widely used in trucks and off-road vehicles of some Japanese and American automakers.
Torsion bar suspension consists of metal shafts. They work for the so-called torsion. So, one end of the shaft is fixed on the chassis, and the other - on a special lever, which in turn is connected directly to the axis of the car. The torsion shaft, as a rule, is made of high-temperature steel. Due to its strength, this material can undergo great loads without harm. The torsion beam (or shaft) can have two locations depending on the type of vehicle. For example, in passenger cars it is placed transversely. Most often, the torsion bar suspension is found on rear-wheel drive cars.On trucks the same beam has a longitudinal location. However, despite the difference in location, the functions remain the same. Like the rest of the suspension, torsion bar affects the smoothness of movement, is responsible for adjusting the roll when turning, for reducing the oscillation of the steered wheels. OneIn some cases, the torsion bar suspension also performs the function of automatic leveling with the help of an engine, which, in turn, tightens the torsion shafts to impart additional rigidity. This kind of design can be used when replacing the wheel. At that time, while all three wheels lift the car, the fourth can be replaced without using a jack.
The torsion bar has several advantages over other species. For example, the service life of such a structure is much longer, and height adjustment is also easier. Such a suspension is smaller and easier to maintain, which is the main advantage.