发明名称 |
VARIABLE VALVE TIMING DEVICE |
摘要 |
In a variable valve timing device, which varies the rotational phase of a camshaft through the relative rotation of a vane rotor and a housing and is provided with a lock mechanism that releases the lock thereof in response to the application of lock-release hydraulic pressure, the crank angle CCA at which the application of lock-release hydraulic pressure is commanded is set variably in accordance with the pressure of the oil supplied for the application so that the lock-release hydraulic pressure rises at a crank angle at which the state of the cam torque becomes suitable for lock-release without relying on changes of time needed for the lock-release hydraulic pressure to raise resulting from oil temperature. |
申请公布号 |
US2014069363(A1) |
申请公布日期 |
2014.03.13 |
申请号 |
US201114115493 |
申请日期 |
2011.05.13 |
申请人 |
YAMAGUCHI ICHIRO;YOKOYAMA YUU;FUJIMURA HARUHITO;TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
YAMAGUCHI ICHIRO;YOKOYAMA YUU;FUJIMURA HARUHITO |
分类号 |
F01L1/344 |
主分类号 |
F01L1/344 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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