Invention Grant
- Patent Title: Variable valve device for internal combustion engine
- Patent Title (中): 内燃机可变阀门装置
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Application No.: US14113495Application Date: 2011-05-17
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Publication No.: US08925503B2Publication Date: 2015-01-06
- Inventor: Yoshiaki Miyazato , Toshio Imamura , Yuu Yokoyama , Masaki Numakura
- Applicant: Yoshiaki Miyazato , Toshio Imamura , Yuu Yokoyama , Masaki Numakura
- Applicant Address: JP Aichi-ken
- Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee Address: JP Aichi-ken
- Agency: Sughrue Mion, PLLC
- International Application: PCT/JP2011/061299 WO 20110517
- International Announcement: WO2012/157074 WO 20121122
- Main IPC: F01L1/34
- IPC: F01L1/34 ; F01L1/344 ; F02D13/02 ; F02D37/02 ; F02P5/15 ; F01L13/00 ; F02D41/00

Abstract:
A variable valve actuation device for an internal combustion engine includes a variable valve timing mechanism and a valve timing restricting mechanism. When the operating state of the variable valve timing mechanism is in the phase restricting state and the operating state of the variable valve timing mechanism is changed to the phase releasing state on the basis of pressing the accelerator pedal, a torque limiting control is then performed to limit an increase in the torque of the internal combustion engine. With this control the rate of increase of the torque is set less than the rate of increase of the torque corresponding to the operation of pressing the accelerator pedal by retarding and correcting the ignition timing. Thus, when the operating state of the variable valve timing mechanism is changed from the phase restricting state to the phase releasing state, thereby reducing discomfort experienced by the driver.
Public/Granted literature
- US20140048026A1 VARIABLE VALVE DEVICE FOR INTERNAL COMBUSTION ENGINE Public/Granted day:2014-02-20
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