发明名称 |
Control system and control process in internal combustion engine |
摘要 |
A control system is provided in an internal combustion engine in which a valve timing such as an opening time point and lift amount of an intake valve can be switched to a low-speed or high-speed valve timing within a lean-burn control range established in accordance with the operational state, such as an intake pipe internal absolute pressure and an engine revolution number of the engine, wherein an air-fuel ratio of an air-fuel mixture supplied to the internal combustion engine is enriched for a predetermined time when the valve timing is switched from the low-speed valve timing to the high-speed valve timing while carrying out a lean-burn control. Thus, even when the valve timing is switched over to the high-speed valve timing, the lean-burn control is carried out to prevent a misfiring or an unstable combustion state caused when the valve timing is switched during the lean-burn control, thereby providing a reduction in emission and an enhancement in drivability, while enhancing the specific fuel consumption.
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申请公布号 |
US5850815(A) |
申请公布日期 |
1998.12.22 |
申请号 |
US19970834195 |
申请日期 |
1997.04.15 |
申请人 |
HONDA GIKEN KOGYO KABUSHIKI KAISHA |
发明人 |
YANO, TORU;KOMORIYA, ISAO;YASUI, YUJI;YONEKURA, TAKAHIRO;ASANO, YUTAKA;TATARA, YUSUKE;KIMURA, EISUKE;HANADA, KOHEI |
分类号 |
F02D13/02;F02D37/02;F02D41/00;F02D41/02;F02D41/12;F02D41/14;F02P5/152;(IPC1-7):F02P5/00 |
主分类号 |
F02D13/02 |
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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