近来486大热啊，俺也来瞎掺和一把。

采用4MATIC系统 奔驰新E级四驱车型发布

奔驰新E级此次采用的4MATIC技术，在正常情况下前后桥扭力分配为45:55，并且可以根据前后轮的抓地情况进行调整（前后桥扭力变换区间为70:30和30:70），当前轮附着力不足时后轮最大可获得70%的扭力。它的核心技术是4ETS差动限制技术，利用ABS的制动力自动分配功能来实现差动限制。当这种全时四驱的车辆有一个车轮打滑时，车载电脑就通过ABS对打滑车辆制动来限制它的空转，从而差速器就可以把传递给打滑车轮的动力转移到其他未打滑的车轮上。

这个水平，应是和486的力狮2。5L/傲虎2。5的四驱水平相当？带VTD的，能比它牛多少？

就公路四驱来说，和新E四驱差不多的价钱，有MDX/RL/Q5等选择，X6/5GT也不远了，这可是松了油门后也是能自动分配四蹄扭力的大马；RSX（前后最大分配95%）/力狮GT/傲虎3。6都不在话下。

下面，看第几帖说：蛋痛。

图王图片很丰富，学习ING。。。。。。

再科普科普SRX VS MDX的四驱如何？江湖传闻只是小有区别。

2005年哦。

vtd

cvt2

cvt

http://www.worldcarfans.com/print/10712112903/mercedes-benz-c-class-with-new-4matic

"The double-disc clutch adjusted to the central differential is an innovative feature of the new Mercedes-Benz all-wheel-drive system. It is linked between the sun wheel and the crown wheel to produce a basic locking force of approx. 50 newton metres between the front and rear axle. The operational principle: the disc package is pre-loaded with permanent force by means of a disc spring. During wheelspin on one of the two axles, friction torque is transferred by the relative movement of the discs from the faster rotating axle to the slower rotating one.

This principle of varia­ble torque displacement between the front and rear axle produces significant improvements in traction and driving stability in 4MATIC models. Traction support produced by the double-disc clutch is particularly noticeable when the friction ratio between tyres and road surface is low, because the clutch automatically disables the drive train during a moderate starting process at a friction value between tyres and road surface of less than µ = 0.3 (more or less equivalent to snow). The wheels are prevented from rotating in such a way as to prevent the so-called “polish effect”, which leads to a reduction in friction value. Another advantage of the double-disc clutch can be seen in the further improved load-changing behaviour of the 4MATIC models."

不可控？

从性能来讲那玩意儿就废材一个。

9988：
那个离合器只是不可控的。 主要用处是在雪地里减少4ets的使用频率

4Matic=VTD
一样有行星齿轮中差。
奔驰是很骄傲的，也是有能力的，不会像破鞋lambo那样，靠粘液耦合撑了好多年。[九九八八 编辑于 2009-12-09 13:18]

终于等来了知道如何才是不蛋痛的，快说快说！

蛋痛