Drive control device for a motor vehicle

摘要

A drive control device for a motor vehicle with rear axle drive is described, which for each driven rear wheel comprises an auxiliary brake, by admission of the correct control brake pressure to which the respective drive wheel tending to spin is slowed down. The auxiliary brakes are designed as low pressure disc brakes which are incorporated into the housing of the differential gear. They are capable of being acted upon by the outlet pressure of the engine oil pump by way of an electro-hydraulic control element which can be triggered by output signals of an electronic control unit responding to the dynamic behaviour of the driven vehicle wheels. The control device can be switched on and off selectively. When it is switched on the auxiliary brakes are subjected to a basic pressure, by means of which the idle movement in an axial direction of displaceably arranged rotor and stator plates is compensated for and a rapid response behaviour of the drive control device is obtained.