Invention Grant
- Patent Title: Variable valve timing control apparatus of internal combustion engine
- Patent Title (中): 内燃机可变气门正时控制装置
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Application No.: US12187738Application Date: 2008-08-07
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Publication No.: US07827948B2Publication Date: 2010-11-09
- Inventor: Naoki Kokubo , Yoshiyuki Kobayashi , Masahiko Watanabe
- Applicant: Naoki Kokubo , Yoshiyuki Kobayashi , Masahiko Watanabe
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Foley & Lardner LLP
- Priority: JP2007-261582 20071005
- Main IPC: F01L1/34
- IPC: F01L1/34
Abstract:
A variable valve timing control apparatus of an internal combustion engine has a drive rotary member rotated by an engine crankshaft, a driven rotary member fixedly connected to a camshaft and transferring a turning force from the drive rotary member to the camshaft, and a phase-change mechanism changing a relative rotational phase between the drive and driven rotary members and having an intermediate rotary member installed between the drive and driven rotary members for a relative rotational phase control. The variable valve timing control apparatus further has a holding mechanism and a releasing mechanism. The holding mechanism forces the intermediate rotary member and holds the relative rotational phase between the drive and driven rotary members, and the releasing mechanism releases a holding state of the holding mechanism.
Public/Granted literature
- US20090090322A1 VARIABLE VALVE TIMING CONTROL APPARATUS OF INTERNAL COMBUSTION ENGINE Public/Granted day:2009-04-09
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