公开(公告)号：US4746173A

公开(公告)日：1988-05-24

申请号：US914341

申请日：1986-10-02

Applicant: Helmut Fennel ,  Hans Wupper ,  Gunther Buschmann ,  Norber Ehmer

Inventor： Helmut Fennel ,  Hans Wupper ,  Gunther Buschmann ,  Norber Ehmer

IPC: B60T8/172 ,  B60T8/1763 ,  B60T8/1769 ,  B60T8/32 ,  B60T8/58 ,  B60T8/66 ,  B60T8/26

CPC classification number: B60T8/58 ,  B60T8/1769 ,  B60T8/322 ,  Y10S303/06

Abstract: A slip-controlled hydraulic brake system for all-wheel driven motor vehicles equipped with lockable differentials (2, 3) is provided with sensors (S.sub.1 -S.sub.4, 33-36) for measuring the rotational behavior of the wheels. Electronic circuits (44) are provided for logic combining and processing the sensor signals, and for generating braking pressure control signals by way of which the brake pressure in the individual wheel brakes (16-19) is variable in response to the rotational behavior of the wheels and to a reference variable. To compensate the increased moments of inertia as a result of the moments transmission, by way of the lockable differentials (2, 3) in this brake system the brake pressure in the rear-wheel brakes (18, 19), can be modulated at a lower control frequency as compared with the brake pressure in the front-wheel brakes (16, 17). The reduction in the control frequency of the rear-wheel brake pressure is determined by driving-dynamic criteria, for example, by the average motor vehicle deceleration or by the motor vehicle speed.

Abstract translation: 配备有可锁定差速器（2,3）的全轮驱动机动车辆的滑动控制液压制动系统设有用于测量车轮旋转行为的传感器（S1-S4,33-36）。 提供电子电路（44）用于逻辑组合和处理传感器信号，并且用于产生制动压力控制信号，通过该制动压力控制信号，单个车轮制动器（16-19）中的制动压力可响应于 车轮和参考变量。 为了通过扭矩传递来补偿增加的惯性矩，通过该制动系统中的可锁定差速器（2,3），后轮制动器（18,19）中的制动压力可以在 与前轮制动器（16,17）中的制动压力相比较低的控制频率。 后轮制动器压力的控制频率的降低由驾驶动力学标准确定，例如通过机动车辆的平均减速度或机动车辆速度来确定。