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1. (WO2018056027) PLUNGER PUMP AND BRAKE DEVICE

Pub. No.:    WO/2018/056027    International Application No.:    PCT/JP2017/031695
Publication Date: Fri Mar 30 01:59:59 CEST 2018 International Filing Date: Tue Sep 05 01:59:59 CEST 2017
IPC: F04B 53/10
B60T 17/00
F04B 1/053
F04B 53/16
Applicants: HITACHI AUTOMOTIVE SYSTEMS, LTD.
日立オートモティブシステムズ株式会社
Inventors: MISUNO, Masaki
御簾納 雅記
NAKAZAWA, Chiharu
中澤 千春
OOHIRA, Atsuki
大平 淳喜
Title: PLUNGER PUMP AND BRAKE DEVICE
Abstract:
Provided is a plunger pump capable of ensuring quietness. The plunger pump is provided with a cylinder, a piston, a discharge valve, and a plug member. The plug member is provided with: a recessed part which is formed on a circumferential wall of a discharge chamber radially facing the outer periphery of the discharge valve; and a discharge passage which is formed in the circumferential wall of the discharge chamber radially facing the outer periphery of the discharge valve at a different position from the recessed part and connects the discharge chamber to the outside.