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Title:
バルブタイミング調整装置
Document Type and Number:
Japanese Patent JP6683142
Kind Code:
B2
Abstract:
A sleeve includes: a supply port communicated with a hydraulic oil supply source; a primary control port communicated with a retard chamber, a secondary control port communicated with an advance chamber; and a drain port communicated with an outside of a valve timing adjustment device. A spool includes: a pressure accumulation space formed at an inside of the spool; a supply passage configured to connect between the pressure accumulation space and the supply port; a primary control passage configured to connect between the pressure accumulation space and the primary control port; a secondary control passage configured to connect between the pressure accumulation space and the secondary control port; and a recycle passage configured to connect between the primary control port or the secondary control port and the pressure accumulation space. The recycle passage and the drain port are connected with each other at the inside of the sleeve.

Inventors:
Tetsuro Mantani
Application Number:
JP2017007514A
Publication Date:
April 15, 2020
Filing Date:
January 19, 2017
Export Citation:
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Assignee:
株式会社デンソー
International Classes:
F01L1/356
Domestic Patent References:
JP2009133216A
Attorney, Agent or Firm:
Hattori Masaki