Through the suspension system to understand, when consumer choice MPV model is no longer "blind man riding a blind horse." Mastered the essential knowledge of chassis technology, consumers will be able to penetrate the refining companies on one pair of flashy advertising of Eagle Eye, and then elected to a real good car.
Advantages of both passenger cars and the MPV with its small stretch of space, comfortable ride experience, a complete business performance in recent years, the domestic automobile market can be described as a meteoric rise. Buick GL8, Grace Gold, Odyssey, and other popular models have been demonstrated in this arena, making this market segment more colorful. Survey shows that consumers in the choice of the time these products are generally most concerned about the appearance factor, interior, engine, etc., but very few people focus on the vehicle chassis performance is critical technical content.
Chassis as the foundation of the car, even if the interior, beautiful design was then, if the low level of technology chassis, will also lead to "less than the day after tomorrow." Often hear consumers complain that a car "fat floating", "to the time rate not too fast, worry about rollover," "road slightest good, feel bumps", etc., can be said that the crux of the reasons for these Many, but probably also the most important factor is the chassis of a lack of skill. Is there any way to allow consumers to take precautions, insight into the opportunities it? In fact, if consumers can increase the number of chassis knowledge, beginning in the choice of models is still relatively easy to distinguish which one is better.
In general, the chassis including the transmission system, driving system, steering system, brake system, which for comfort, stability and control than the stability of the greatest lines of suspension travel. The so-called wheel suspension is connected with the structure of the body, because it actually makes the body suspended in the air, so named, the main role is to absorb the impact of various road to face the body, to ensure that the vehicle occupant ride comfort and vehicle stability However, if the blind pursuit of these two purposes, will sacrifice handling and stability, so a good suspension system should be able to ensure the car's performance in these three areas should have better performance. The consumer is well-known shock absorber suspension constitutes an important structure, in addition to suspension system also includes a flexible element (eg, torsion bar springs, coil springs, air springs, etc.) and the guide elements (such as various types of bars) and so on. Based on general automotive engines, transmissions and other structural arrangement was necessary, with independent suspension both front overhang, so the several mentioned in this article begins MPV models differ mainly in the suspension on the rear suspension (in the following referred to as "hanging "Unless otherwise stated, are" rear suspension ").
There are three basic forms of suspension system, which non-independent suspension, independent suspension, and in between the semi-independent suspension.
Figure 1 Schematic diagram of a non-independent suspension, is specifically expressed in two structural forms: leaf springs, four-link coil spring non-independent suspension (also with five-link coil spring suspension of non-independent). The advantages of using this suspension structure is simple, low cost, more favorable for vehicle manufacturers, but the disadvantages are also obvious, as is a rigid bar connected directly to the wheels on both sides on the impact side of the wheel, vibration bound to affect the other side of the wheel, so naturally will not get better handling stability and comfort, and because the interaction of right and left wheels, but also likely to influence the stability of the body, when in turn are more prone to rollover . Currently, refine, popular MPV is used in this structure, in addition we can often see all kinds of light passenger cars also chose this structure.
Figure 2 is a schematic of an independent suspension, this suspension are more specific forms, such as double-wishbone, multi-link, and so on. This suspension more adjustable parameters, can provide designers with a broader design space, so manufacturers can design cars beginning in through the appropriate adjustment to make the car ride comfort, stability, handling and stability three aspects of a reasonable configuration, compared to non-independent suspension is the innate advantages of independent suspension has been established, and the use of models compared to the non-independent suspension, with independent suspension of the vehicle even at high speed will not feel "body hair floating "solid feeling chassis is very obvious. In addition, the use of wheel independent suspension on both sides of the car body is connected with each other independently, so the use of the process from the point of view, the side of the wheel when under attack, after the vibration absorbed by the elastic element's own impact, this impact will not be affected The other side of the wheel, which naturally has a non-independent suspension can not match. However, the independent suspension is not without its drawbacks, because the steering wheel by centrifugal force inside than the outside wheels are much larger force, the force if the inside of the wheel in some special circumstances (such as excessive speed, larger lateral wind, poor road conditions, etc.) is insufficient to support the lateral force and body force generated by gravity, it (Figure 3): Grace of the rear axle
Prone to rollover. For this concern, car manufacturers often use four-wheel independent suspension models install the appropriate stiffness of the horizontal stabilizer (some are based on different models installed in the front or rear wheels, some front and rear wheels are installed). Currently Grace, Odyssey is used in this structure, previously heard someone talking about Grace is a bus chassis, perhaps out of "Gold Cup" brand inertia of thinking.
As Grace uses a four-wheel independent suspension system to improve ride comfort, this design is often more common in cars, a large body such as Grace's car is also unusual. Although this is sometimes a bit more rigid suspension system, but high-speed ahead on the road in the cement, the incoming road noise inside the larger, hard time hanging on the filling completely the benefits system, aftershocks filter fast, even if the road uneven, bumpy feel it is not obvious.
Figure 4 is a schematic of semi-independent suspension, a non-independent suspension is actually a special form, because it's both sides of the wheels are directly connected by means of a bar, but the rod is not completely rigid piece of material, but has better distortion characteristics, when the side of the wheel by the impact, the impact on the other side of the wheel is not as strong as non-independent suspension, but it is difficult to achieve a level of independent suspension. This form is actually a cost savings for automotive manufacturers to consider the use of angles, usually for economy cars, the Buick GL8 is also used in this structure.
As the current suspension of the difference between the MPV is the basic form of the main differences, but this is mainly due to guide consumers in a situation of hot MPV sales are serious about performance that is critical for the technical characteristics and, therefore, not the specific structure of the independent suspension to start the detailed discussion, but I think for the average consumer can understand if the above would suffice, after all, many consumers have never hung according to the specific structure to determine the model trade-offs.
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