Title:
可変容量形ポンプ及びこのポンプを用いたバルブタイミング制御システム及び内燃機関のバルブタイミング制御装置
Document Type and Number:
Japanese Patent JP4908373
Kind Code:
B2
Abstract:
A variable displacement pump including a chamber volume varying mechanism including a moveable member, a first biasing member always biasing the moveable member in such a direction as to increase volumes of the working fluid chambers, and a second biasing member that is disposed with a set load and applies a biasing force to the moveable member in such a direction as to increase the volumes of the working fluid chambers when the moveable member is displaced against a biasing force of the first biasing member by a predetermined amount or more. The biasing force of the first biasing member is set such that before the moveable member is displaced against the biasing force of the first biasing member, the valve timing control device is shifted to a release state in which an open-and-closure timing of an engine valve is variably controlled.
Inventors:
Ichinosezawa
Hideaki Onishi
Yasushi Watanabe
Hideaki Onishi
Yasushi Watanabe
Application Number:
JP2007269631A
Publication Date:
April 04, 2012
Filing Date:
October 17, 2007
Export Citation:
Assignee:
Hitachi Automotive Systems, Ltd.
International Classes:
F04C14/22; F01L1/356; F04C2/344
Domestic Patent References:
| JP2124287U | ||||
| JP11218009A | ||||
| JP9280017A |
Attorney, Agent or Firm:
Tsuyoshi Hashimoto