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Title:
HYDRAULIC POWER BOOSTER FOR VEHICLE ANTI-LOCK BRAKE AND PRESSURE SOURCE
Document Type and Number:
Japanese Patent JPH01160768
Kind Code:
A
Abstract:

PURPOSE: To decrease the amount of a required pressure medium to decrease in input energy into a pressure source by forming a closable pressure medium connection between a booster chamber and a resetting chamber, and connecting the resetting chamber with a reserver through the closable pressure medium connection.

CONSTITUTION: To release the pressure of a master cylinder, a valve 26 provided at a pressure medium connection between a booster chamber 8 and a resetting chamber 9, and a valve 28 provided at a pressure medium 27 between a resetting chamber 9 and a reserver chamber 29 are switched respectively. As a result, the pressures of the two chambers 8, 9 are increased, so that the pressure acting on a booster piston 3 is released. The additional force of the master cylinder acting on a tappet energizes the booster piston 3 and is returned to its braking release position, so that the pressure medium proceeds to the resetting chamber 9. The pressure medium needs to be supplied by a pressure source. It is thus possible to decrease the necessary amount of pressure medium, thereby reducing input energy into a pressure source.


Inventors:
Belart, Juan
Klein, Hans-christof
Application Number:
JP1988000261302
Publication Date:
June 23, 1989
Filing Date:
October 17, 1988
Export Citation:
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Assignee:
ALFRED TEVES GMBH
International Classes:
B60T8/1761; B60T8/40; B60T8/44; B60T13/14; B60T13/57; B60T13/72; F15B7/08; (IPC1-7): B60T8/44; B60T13/52; F15B7/08
Domestic Patent References:
JPS61135850A1986-06-23
JPS6299245A1987-05-08



 
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