Piston pump for conveying pressure fluid in hydraulic brake system, has one pump piston independently rendered stationary by actuation of other pump pistons for reducing pressure fluid delivery, and for switching one of eccentric cams

摘要

The piston pump has a pump housing (22) arranged with several pump pistons (1-6) actuated by the eccentric cams (7-9) arranged in drive shaft (10) for conveying pressure fluid. One of the pump pistons (1,2) is independently rendered stationary by the actuation of the pump pistons (3-6) for reducing the pressure fluid delivery, and the one of eccentric cams are switched. The eccentric cam is provided with a free wheel (11).