中央差速器（Central differential）.docVIP

中央差速器（Central differential） 3-1. Different steering characteristics As everybody knows, for for cross-country car all-wheel-drive is very effective, but for not in cross-country cars as the main design goal, increase the all-wheel-drive system is really necessary? Add two more wheels to drive, not only to add a large number of parts to the car, fuel consumption should also increase a lot of? This is the most frequently asked question. So why add a full time 4-drive function for a car? As explained earlier, the AWD raises the security potential, but in fact the benefits of the AWD are far from simple, and it also improves performance. In simple terms, precursor of the car by the front-wheel drive, just like pulling the car run, then drove like run in the cart, therefore, in the high speed, they have a different dynamic performance. In fact, from our actual life, we can also experience the difference of pull the cart and cart. Before turning, driving is easy to control the direction of the car, because it is in the pull car, but because of the front wheel is responsible for driving and should be responsible for steering at the same time, so under the lateral force carve up the turn, as if the drive torque is too big, is easy to break through the tyres grip limit and appear tire slippage. Once the front wheels began to slip, because they cant get (or cuts) drive speed will begin to decline, at the same time, after slipping of the front wheels cannot accurately according to the steering wheel to realize steering, the car will be under the action of inertial deviating from the orbit, slip out of bend, this is the so-called understeer. However, the lack of handling is fairly simple, as long as the throttle is improved, the driver can regain control of the car. For the rear drive, the front wheel does not drive torque, so all of its grip can be used to make a turn, and all the grip of the wheel can be used to drive it. This division of labor is reasonable in theory. But in