Invention Grant
- Patent Title: Valve timing control device of internal combustion engine
- Patent Title (中): 内燃机气门正时控制装置
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Application No.: US13080239Application Date: 2011-04-05
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Publication No.: US08677965B2Publication Date: 2014-03-25
- Inventor: Hiroyuki Kato , Seiji Tsuruta , Kotaro Watanabe , Yoshinori Ichinosawa
- Applicant: Hiroyuki Kato , Seiji Tsuruta , Kotaro Watanabe , Yoshinori Ichinosawa
- Applicant Address: JP Ibaraki
- Assignee: Hitachi Automotive Systems, Ltd.
- Current Assignee: Hitachi Automotive Systems, Ltd.
- Current Assignee Address: JP Ibaraki
- Agency: Antonelli, Terry, Stout & Kraus, LLP.
- Priority: JP2010-162433 20100720
- Main IPC: F01L9/00
- IPC: F01L9/00

Abstract:
A valve timing control device comprises a drive rotation member driven by a crankshaft of an internal combustion engine; a driven rotation member fixed to a camshaft that actuates engine valves to open and close, the drive rotation member and driven rotation member being coaxially arranged to make a relative rotation therebetween; a phase varying mechanism that rotates the driven rotation member relative to the drive rotation member within a given angle, the phase varying mechanism being able to cause the driven rotation member to take the most-retarded phase position, the most-advanced phase position and a middle phase position defined between the most-retarded phase position and the most-advanced phase position; and a position keeping mechanism that is able to keep the driven rotation member at least the most-retarded phase position and the middle phase position at the time of starting the engine, and is able to select one of the most-retarded phase position and the middle phase position in accordance with an operation condition of the engine.
Public/Granted literature
- US20120017857A1 VALVE TIMING CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE Public/Granted day:2012-01-26
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