HYDRAULISCHER VERSTAERKER, INSBESONDERE FUER EINE FAHRZEUGBREMSANLAGE

摘要

In a brake power hydraulic booster, the initial positions of booster piston (2) and control slide (8) and/or actuating piston (5) are defined by a stop (27) on the housing such that a fluid return bore (14) to a reservoir (31) is almost closed when the pistons are in their initial positions. Upon actuation and subsequent release of the brake, the control slide (8) is slid back relative to the booster piston (2) so far that the cross-section of the fluid return bore (14) is completely open, thereby permitting the pressure fluid to discharge from the booster chamber (4) into the supply reservoir (31) without resistance. This combines a small lost travel on initial actuation with a rapid release of the brake. The stop for the pistons (2, 5) is provided suitably by an L-shaped sleeve (27). <IMAGE>