Center differential previously described (responsible for front and rear axle of the power distribution), you can do the distribution of power to the front and rear axle, but this proportion will be allocated with the front and rear wheels of the adhesion of change. The center differential with a locking feature that allows the front and rear axle to get a fixed power distribution ratio (typically around 50:50), the front and rear axle can be obtained to ensure a stable power output, in order to improve the vehicle by performance.
In urban SUV AWD system, some have a center differential with a locking feature, such as modern IX35, Toyota RAV4, Nissan X-Trail and so on. In the car will see the "LOCK" button is used to lock the center differential. That is not to have a center differential lock four-wheel drive system coilover suspension to meet the needs of a variety of off-road? It is not. Central differential lock is responsible for the distribution of power front and rear axles, but later assigned to each bridge, but also the distribution of the differential between the wheel on both sides of the wheel.
Then it will encounter another problem, understand the differential principle, we know that if one side of the front axle of the wheels slipping, then assigned to 50% through the center differential that will power the front axle from slipping wheel loss. If you have a front and rear axle wheel spin exhaust manifold manufacturer, then the vehicle will not move. When off-road is still very easy to run into this road, then how to deal with this situation? The next round is introduced between the power distribution problem. Now the main mechanical limited-slip differential, differential lock or brake wheels way to deal with this the power to the traditional differential adhesion of small wheels "malpractice."
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