发明名称 |
Methode und Gerät für die Steuerung von einem Fahrzeugmotor und Getriebe |
摘要 |
The present invention provides an engine power train control method and control apparatus for a vehicle having an engine and an automatic transmission capable of quickly changing an air-fuel ratio to meet the requirements of the exhaust gas without producing shocks and without reducing an engine torque. The invention has following components. <??>An air-fuel ratio command value is varied stepwise for transition between an air-fuel ratio for lean-burn operation and a stoichiometric air-fuel ratio and, at the same time, an air amount fed to the engine is varied stepwise. In a fixed period following the completion of the stepwise variation of air-fuel ratio command value, a basic fuel amount fed to the engine is varied stepwise from a value determined according to the air amount and an engine speed to a value determined according to a position of an accelerator pedal of the vehicle and the engine speed. <??>The invention provides that shocks do not occur and the operability is improved, because the engine torque remains substantially constant through the air-fuel ratio transition. <IMAGE> |
申请公布号 |
DE69531796(T2) |
申请公布日期 |
2004.07.15 |
申请号 |
DE1995631796T |
申请日期 |
1995.07.17 |
申请人 |
HITACHI, LTD. |
发明人 |
OZAKI, NAOYUKI;AMANO, MATSUO;OHNISHI, HIROSHI;MINOIWA, TOSHIMICHI |
分类号 |
B60W10/04;B60W10/06;B60W10/10;B60W10/11;F02D29/00;F02D35/00;F02D41/00;F02D41/04;F02D41/10;F02D41/14;F02D41/18;F02D43/00;F02D45/00;F16H59/74;F16H61/00;F16H61/02;F16H61/14;F16H63/40;F16H63/50 |
主分类号 |
B60W10/04 |
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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