Invention Grant
- Patent Title: Variable valve operating device
- Patent Title (中): 变阀操作装置
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Application No.: US11658527Application Date: 2005-08-30
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Publication No.: US07644689B2Publication Date: 2010-01-12
- Inventor: Manabu Tateno , Toshiaki Asada , Shuichi Ezaki
- Applicant: Manabu Tateno , Toshiaki Asada , Shuichi Ezaki
- Applicant Address: JP Toyota-Shi
- Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee Address: JP Toyota-Shi
- Agency: Oliff & Berridge, PLC
- Priority: JP2004-252562 20040831
- International Application: PCT/JP2005/016189 WO 20050830
- International Announcement: WO2006/025569 WO 20060309
- Main IPC: F01L1/34
- IPC: F01L1/34

Abstract:
A variable valve operating device that makes it possible to reduce the loss in driving force transmission from a camshaft to a valve during a valve lift is provided. The rotary motion of a drive cam is transmitted to a swing member via intermediate rollers. A coupling member couples the intermediate rollers, to a swing fulcrum that is fastened to a control shaft. The swing fulcrum is positioned eccentrically to the center of the control shaft. Further, when the control shaft is positioned at a predetermined rotation position, the swing fulcrum is positioned so that the control shaft is placed between the swing fulcrum and the intermediate rollers. Preferably, the swing fulcrum, the control shaft, and the intermediate rollers are aligned.
Public/Granted literature
- US20080302320A1 Variable Valve Operating Device Public/Granted day:2008-12-11
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