Patent ID: 6074018
Filing Date: 2000-06-13
Classification: B60T

Abstract:
A hydraulic vehicle brake system with an arrangement for slip control and/or a vehicle dynamics control, comprising at least two brake circuits, having a tandem or multicircuit master cylinder (12), a switch over valve (14) embodied as a controllable differential pressure valve in each brake circuit that follows the master cylinder, at least one wheel brake cylinder (16) in each brake circuit, a brake pressure modulation valve assembly (20) for each wheel brake cylinder, a return pump (24) in each brake circuit, with which brake fluid that has flowed out of the wheel brake cylinders is fed in a direction of the master cylinder via said switch over valve (14) or back to the wheel brake cylinders via a brake pressure buildup valve (18), the vehicle brake system (10:40) has an additional pump (28) in each brake circuit (I, II), with an intake side connected to the master cylinder (12) and the wheel brake cylinders (16) of said brake circuit (I, II) are connected via the brake pressure modulation valve assembly 20 via said return pump (24) to a pressure side of said additional pump (28), and the intake side of the return pump (24) is connected to the master cylinder (12) via an intake valve (36).