发明名称 |
Crankshaft rotation control in a hybrid electric vehicle |
摘要 |
A method of controlling engine crankshaft motion in a hybrid electric drive system having an internal combustion engine and a motor-generator operatively connected to a crankshaft of the engine is disclosed. The steps include monitoring the crankshaft position, forecasting a crankshaft stall position; comparing the forecast stall position with a target range; and if the forecast crankshaft stall position is outside the target range, operating the motor-generator to modify the forecast stall position to be within the target range. These steps properly position the crankshaft for re-initiating engine start-up. The method further includes the steps of calculating an effective lube interval time once the crankshaft speed is zero; comparing the effective lube interval time to a critical time; and if the effective lube interval time is greater than the critical time, pulsing the motor-generator to rock the crankshaft for a pulse time to redistribute a lubricant film.
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申请公布号 |
US2002093202(A1) |
申请公布日期 |
2002.07.18 |
申请号 |
US20010760503 |
申请日期 |
2001.01.16 |
申请人 |
DOWNS ROBERT CHARLES;TAMAI GORO;HOANG TONY T.;RICHEY DENNIS T. |
发明人 |
DOWNS ROBERT CHARLES;TAMAI GORO;HOANG TONY T.;RICHEY DENNIS T. |
分类号 |
B60K6/485;B60K6/54;B60W10/06;B60W10/08;B60W20/00;F01M5/02;F02D41/04;F02D41/34;F02N19/00;(IPC1-7):B60L7/00 |
主分类号 |
B60K6/485 |
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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