Invention Grant
- Patent Title: Variable valve timing device for internal combustion engine and manufacturing method therefor
- Patent Title (中): 用于内燃机的可变气门正时装置及其制造方法
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Application No.: US13164334Application Date: 2011-06-20
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Publication No.: US08453614B2Publication Date: 2013-06-04
- Inventor: Toshio Imamura , Akihiko Takenaka
- Applicant: Toshio Imamura , Akihiko Takenaka
- Applicant Address: JP Toyota JP Kariya
- Assignee: Toyota Jidosha Kabushiki Kaisha,Denso Corporation
- Current Assignee: Toyota Jidosha Kabushiki Kaisha,Denso Corporation
- Current Assignee Address: JP Toyota JP Kariya
- Agency: Oliff & Berridge, PLC
- Priority: JP2010-144978 20100625
- Main IPC: F01L1/34
- IPC: F01L1/34

Abstract:
A variable valve timing device for an internal combustion engine includes: a variable valve timing mechanism that changes a valve timing; and a phase limiting mechanism that locks a rotational phase between a housing rotor and a vane rotor at an intermediate phase. The phase limiting mechanism engages a first limiting pin with a first engaging groove and engages a second limiting pin with a second engaging groove to lock the housing rotor to the vane rotor. A retard-side side surface of an engaging hole is configured so as to be able to adjust a clearance between the second limiting pin and the retard-side side surface when the first limiting pin is engaged with a first advance end portion.
Public/Granted literature
- US20110315104A1 VARIABLE VALVE TIMING DEVICE FOR INTERNAL COMBUSTION ENGINE AND MANUFACTURING METHOD THEREFOR Public/Granted day:2011-12-29
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