| 摘要 |
PCT No. PCT/EP89/01339 Sec. 371 Date Jul. 6, 1990 Sec. 102(e) Date Jul. 6, 1990 PCT Filed Nov. 9, 1989 PCT Pub. No. WO90/05657 PCT Pub. Date May 31, 1990.An antilock brake system comprises a valve (20) in the flow path of the hydraulic fluid between a master cylinder (10) and a brake cylinder (18). To obtain on braking without antilock control a rapid pressure buildup in the brake cylinder (18) and a throttled pressure buildup when braking with antilock control, a valve (20) is provided in the hydraulic connecting conduit (14, 14', 14'') between the master and brake cylinders and comprises a floating piston (50) which is subjected on the one side to the pressure of the hydraulic fluid in the master cylinder (10) and on its other side to the pressure of the hydraulic fluid in the brake cylinder (18). The floating piston (50) controls the valve in such a manner that when the pressure in the master cylinder (10) is greater by a predetermined amount than the pressure in the brake cylinder (18) only a throttled flow through the valve (20) is possible. On braking without antilock control the valve (20) is open so that an unthrottled flow is possible from the master cylinder (10) to the brake cylinder (18).
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