发明名称 |
VARIABLE VALVE ACTUATION SYSTEM OF INTERNAL COMBUSTION ENGINE |
摘要 |
In a variable valve actuation system of an internal combustion engine employing a variable valve actuator capable of variably adjusting at least intake valve closure timing depending on engine operating conditions, a processor of a control unit is programmed to phase-advance the intake valve closure timing to a predetermined timing value after a piston top dead center position and before a piston bottom dead center position on intake stroke during at least one of an engine starting period and an engine stopping period. The variable valve actuator includes a biasing device by which the intake valve closure timing is permanently biased toward the predetermined timing value.
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申请公布号 |
US2010108027(A1) |
申请公布日期 |
2010.05.06 |
申请号 |
US20100685789 |
申请日期 |
2010.01.12 |
申请人 |
HITACHI,LTD. |
发明人 |
NAKAMURA MAKOTO;HARA SEINOSUKE |
分类号 |
F02D13/04;F01L1/34;F02D41/00 |
主分类号 |
F02D13/04 |
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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