公开(公告)号：US4745987A

公开(公告)日：1988-05-24

申请号：US28000

申请日：1987-03-17

Applicant: Gunther Buschmann

Inventor： Gunther Buschmann

IPC: B60K17/34 ,  B60K23/08 ,  B60T8/1769 ,  B60T8/32 ,  B60T8/34 ,  B60W10/02 ,  B60W10/10 ,  B60W10/12 ,  B60W10/18 ,  B60K17/35

CPC classification number: B60T8/322 ,  Y10S303/06

Abstract: A slip-controlled brake system for all-wheel drive motor vehicles is provided with differentials (16,19,20) for balancing track difference between the individual wheels (VR, VL, HR, HL). Wheel sensors (31-34) and electrical circuits (9) for generating brake pressure control signals are provided to control the brake pressure in the event of imminent locking. A disconnecting clutch (37) is inserted into a driving split axle (25) connecting a wheel to the rear axle differential (20). The disconnecting clutch (37) can be actuated either electromagnetically or hydraulically. Upon commencement of the brake slip control or at a predetermined time thereafter, the disconnecting clutch (37) is disengaged thereby rendering the coupling between the rear wheels and/or between front and rear axles ineffective thereby to permit an individual slip control by way of the individual control channels.

Abstract translation: 用于全轮驱动机动车辆的滑动控制制动系统设置有用于平衡各个车轮（VR，VL，HR，HL）之间的轨迹差的差速器（16,19,20）。 提供用于产生制动压力控制信号的车轮传感器（31-34）和电路（9），以便在即将发生锁定的情况下控制制动压力。 断开离合器（37）插入连接车轮与后桥差速器（20）的驱动分裂轴（25）中。 断开离合器（37）可以电磁或液压地致动。 在制动器打滑控制开始时或其后的预定时间，断开离合器（37）脱离，从而使得后轮之间和/或前轴与后轴之间的联接无效，从而允许单独的滑动控制 个人控制通道。

公开(公告)号：US4736994A

公开(公告)日：1988-04-12

申请号：US914647

申请日：1986-10-02

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

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

IPC: B60T8/172 ,  B60T8/1761 ,  B60T8/1763 ,  B60T8/1769 ,  B60T8/32 ,  B60T8/58 ,  B60T8/66 ,  B60T8/72

CPC classification number: B60T8/58 ,  B60T8/17616 ,  B60T8/1769 ,  B60T8/322 ,  B60T2250/04

Abstract: To control the braking pressure in the wheel brakes of a slip-controlled hydraulic brake system for automotive vehicles with all-wheel drive and with lockable or automatically locking differentials (2, 3), a circuit configuration is provided which influences the variation of the vehicle reference speed (v.sub.REF). This is to say, in the event of the wheel (v.sub.Rn) which is momentarily decisive for the formation of references becoming instable, the reference speed (v.sub.REF) will first be declined with a relatively flat gradient which corresponds to a vehicle deceleration at a low frictional coefficient. A decrease of the vehicle reference speed (v.sub.REF) with a very steep gradient will follow after a predetermined period of time (T.sub.1). This decrease is continued until the vehicle reference speed (v.sub.REF) reaches the decisive wheel speed again or falls thereunder. To avoid oscillations, the change-over of the reference (v.sub.REF) after the attainment of the wheel speed curves (v.sub.Rn) will not be effected until after a predetermined time of delay (T.sub.2 or T.sub.3).

Abstract translation: 为了控制具有全轮驱动和可锁定或自动锁定差速器（2,3）的机动车辆的滑动控制液压制动系统的车轮制动器中的制动压力，提供了影响车辆变化的电路配置 参考速度（vREF）。 也就是说，如果轮对（vRn）对于形成基准变得不稳定而暂时具有决定性，则参考速度（vREF）首先将以相对平缓的梯度下降，这对应于低速下的车辆减速度 摩擦系数。 在预定时间段（T1）之后，将跟随具有非常陡梯度的车辆基准速度（vREF）的减小。 直到车辆参考速度（vREF）再次达到决定性车轮速度或下降为止，才会持续下降。 为了避免振荡，在达到车轮速度曲线（vRn）之后，直到经过预定的延迟时间（T2或T3）之后才会进行参考（vREF）的转换。

公开(公告)号：US4723412A

公开(公告)日：1988-02-09

申请号：US708978

申请日：1985-03-07

Applicant: Gunther Buschmann

Inventor： Gunther Buschmann

IPC: B60T13/14 ,  F15B7/00

CPC classification number: B60T13/148

Abstract: A hydraulic brake system for automotive vehicles with a master brake cylinder and with a hydraulic power booster (1) connected upstream of the master brake cylinder, in which a pressure medium pump (6) drivable by an electric motor (9) is employed for providing auxiliary hydraulic energy. The drive of the pressure medium pump (6) may be switched on by a pressure contact (13) of a pressure accumulator (4), on the one hand, and by a brake pedal contact (11), on the other hand. In the unbraked operation of the automotive vehicle, the pressure medium accumulator is permanently kept on a pressure level sufficient for an initial actuation of the brake. A valve assembly is provided which establishes a hydraulic connection between the outlet of the pressure medium pump (6) and the pressure port of the hydraulic power booster (1). An electromagnetically actuatable two-way/two-position directional control valve (5) is connected to the valve assembly (7), which valve (5) is normally open and which is adapted to be switched to its closed position by a brake pedal contact (11).

Abstract translation: 一种用于具有主制动缸和具有连接在主制动缸上游的液压助力器（1）的机动车辆的液压制动系统，其中采用可由电动机（9）驱动的压力介质泵（6）用于提供 辅助液压能源。 另一方面，压力介质泵（6）的驱动可以通过蓄压器（4）的压力接触（13）和制动踏板接触（11）来接通。 在汽车的未制动操作中，压力介质蓄能器永久地保持在足以初始致动制动器的压力水平上。 提供一种阀组件，其在压力介质泵（6）的出口和液压动力助力器（1）的压力端口之间建立液压连接。 一个电磁致动的双向/两位置方向控制阀（5）连接到阀门组件（7）上，阀组件（5）是常开的，并且该阀组件（7）适于通过制动踏板触点切换到其关闭位置 （11）。