Search International and National Patent Collections

1. (WO2017153072) PISTON PUMP, IN PARTICULAR AS A PRESSURE GENERATOR IN AN ELECTRONICALLY SLIP-CONTROLLABLE VEHICLE BRAKE SYSTEM

Pub. No.:    WO/2017/153072    International Application No.:    PCT/EP2017/050977
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Thu Jan 19 00:59:59 CET 2017
IPC: F04B 1/04
F04B 53/10
B60T 8/40
Applicants: ROBERT BOSCH GMBH
Inventors: GAERTNER, Oliver
HENNIG, Oliver
Title: PISTON PUMP, IN PARTICULAR AS A PRESSURE GENERATOR IN AN ELECTRONICALLY SLIP-CONTROLLABLE VEHICLE BRAKE SYSTEM
Abstract:
The invention relates to a piston pump (10), in particular as a pressure generator in an electronically slip-controllable vehicle brake system, comprising a pump cylinder (12), in which a drivable piston (14) is slidably accommodated, a pump working chamber (18), which is bounded by the piston (14) and the pump cylinder (12), and a valve (22), which controls a supply of pressure medium to the pump working chamber (18), wherein the valve has a conical valve seat (28) and a closing element (26) having a domed shell section that interacts with the valve seat (28); and wherein the valve seat (28) surrounds a valve space (30), into which the closing element (26) plunges at least up to an imaginary center point (M) of the domed shell section when the valve seat (28) is closed or open.