MOTOR VEHICLE BRAKING SYSTEM WITH AND TRACTION CONTROL AND/OR MOVEMENT DYNAMICS REGULATING DEVICE

摘要

The invention relates to a motor vehicle anti-lock dual braking system (10) comprising a dual brake master cylinder (12) with a downstream change-over valve (14), a braking pressure modulation valve arrangement (18,20) with a braking pressure increase valve (18) and a braking pressure decrease valve (20) for each wheel-brake cylinder (16), and a return pump (24). In order to achieve a rapid increase in braking pressure for regulation of movement dynamics, an additional pump (28) is provided in each brake circuit (I, II). The vacuum side of said pump is connected directly to brake master cylinder (12) and feeds in the direction of the wheel -brake cylinders (16) connected to brake circuits (I, II). Even when the brake master cylinder (12) is not actuated, braking pressure can be increased in each wheel-brake cylinder (16) and can be modulated individually for each wheel in a known manner.