发明名称 |
Variable valve actuation apparatus of internal combustion engine |
摘要 |
In a variable valve actuation apparatus of an internal combustion engine configured to variably control at least a working angle of an engine valve, a valve actuation mechanism is configured to control a valve acceleration characteristic of the engine valve depending on an engine operating condition. The valve actuation mechanism is configured to bring about a first state where a maximum positive valve-closing acceleration of the engine valve becomes less than a maximum positive valve-opening acceleration of the engine valve, at a maximum working angle. The valve actuation mechanism is further configured so that a second state where the maximum positive valve-opening acceleration of the engine valve becomes less than the maximum positive valve-closing acceleration of the engine valve, exists at a working angle less than the maximum working angle. |
申请公布号 |
US8210154(B2) |
申请公布日期 |
2012.07.03 |
申请号 |
US20090615560 |
申请日期 |
2009.11.10 |
申请人 |
NAKAMURA MAKOTO;SHOJI MASAHIRO;HITACHI AUTOMOTIVE SYSTEMS, LTD. |
发明人 |
NAKAMURA MAKOTO;SHOJI MASAHIRO |
分类号 |
F02D13/00;F02D13/02 |
主分类号 |
F02D13/00 |
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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