Suspension system, this magical magic hand controls the connection between the body and the wheel. As far as the current situation is concerned, the suspension can be divided into two categories: non-independent suspension and independent suspension. Independent suspension can be divided into several types. MacPherson, trailing arm, double wishbone and multi-link type are common. From the point of view of most of the consistent understanding, multi-link suspension is currently the best overall suspension performance, accurate positioning, effective suppression of roll, in the control of comfort while taking into account the comfort, and the actual situation also confirmed at this point.
The multi-link suspension refers to a suspension structure in which three or more connecting rods are provided and can provide control forces in multiple directions so that the tire has a more reliable trajectory. However, nowadays, because the three-link structure can no longer meet people's higher pursuit of chassis handling performance, only four-link and five-link suspensions with more precise structure and more accurate positioning can be called true Linkage type, these two suspension structures are usually applied to the front and rear wheels, respectively. Take the example of a five-link suspension that is often used for rear wheels. The five links refer to the main control arm, the front positioning arm, the rear positioning arm, the upper arm, and the lower arm. The main control arm can be used to adjust The role of the front beam in the rear wheel is to improve the driving stability of the vehicle and effectively reduce the friction of the tire. Because of this, the multi-link suspension has a complicated structure, a high cost, a large weight, and a large space.
Due to the multiple links as positioning, precise adjustment of the wheel position can be achieved. The performance of the chassis of the vehicle is largely adjusted, and the complex multi-link provides the engineer with a wider tuning space and therefore better performance. Due to the support on the upper and lower wheels, its structural strength is higher than that of McPherson, and its weight is lower than that of the double wishbone. When the vehicle corners, the multi-link suspension can not only change the camber angle of the tire, but also change the toe-in angle to achieve the effect of “rear steeringâ€, and the actual performance is far more than what everyone knows. Rear suspension." This kind of performance is extremely advantageous for improving the controllability. In addition, due to better supportability, the multi-link structure has advantages in suppressing the roll and reducing the heading or nodding caused by acceleration and braking, as compared to MacPherson's suspension. All of this will be reflected in the handling of the vehicle. Based on the more stable characteristics of the multi-link suspension structure itself, when adjusting the suspension, the engineer can have more adjustment space in the spring hardness, and thus can bring about better comfort.
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Air suspension system - is an advanced product popular in the automotive industry in today's developed countries. In developed countries, 100% of medium-size and above passenger cars use air suspension systems, and over 40% of trucks, trailers and tractors use air suspension systems. The air suspension system can increase or decrease the height of the chassis according to the undulation of the road, so that the vehicle can adapt to the driving demand under a variety of road conditions. For this purpose of design, air suspension systems are often used on off-road vehicles that are often driven under harsh road conditions to ensure that vehicles can smoothly pass through mud, water, sand, and other road surfaces.
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