Patent ID: 6149247
Filing Date: 2000-11-21
Classification: B60T

Abstract:
A hydraulic vehicle brake system with an external power service brake system and a muscle power auxiliary brake system, comprising a master cylinder (10) that is connected to at least one wheel brake cylinder (16) through a block valve (14), a brake fluid reservoir (12) placed on said master cylinder and which communicates with the master cylinder, a hydraulic pump (18) including a pressure side which is connected directly to a high pressure hydraulic accumulator (24) and is connected to the at least one wheel brake cylinder (16) through a brake pressure increase valve (26), a brake pressure decrease valve (30) that is connected subsequent to the wheel brake cylinder, the vehicle brake system has a fluid tight low pressure hydraulic accumulator (20) being closed in relation to atmosphere and connected to an intake side of the hydraulic pump (18) and connected to the wheel brake cylinder (16) through the brake pressure decrease valve (30).