发明名称 |
DYNAMIC ALLOCATION OF DRIVE TORQUE |
摘要 |
Methods and systems are provided for dynamically allocating engine torque and motor torque in a hybrid vehicle to meet operator torque demand. The allocation is adjusted by constraining the maximum engine torque allowable under selected conditions to provide a better trade-off between performance and fuel economy. A maximum engine torque that provides best fuel economy is learned during engine operation at different engine speed-load conditions based on a deviation in spark retard torque ratio from a threshold ratio as spark timing is moved to MBT. |
申请公布号 |
US2015066265(A1) |
申请公布日期 |
2015.03.05 |
申请号 |
US201314018289 |
申请日期 |
2013.09.04 |
申请人 |
Ford Global Technologies, LLC |
发明人 |
Martin Douglas Raymond;Haladyna Ted;Miller Kenneth James |
分类号 |
B60W20/00 |
主分类号 |
B60W20/00 |
代理机构 |
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代理人 |
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主权项 |
1. A method for a hybrid electric vehicle, comprising:
dynamically limiting a maximum available torque for an engine based on each of an operator selected vehicle performance mode and a change in torque demand, the maximum available torque limited between a first torque limit based on performance and a second torque limit based on fuel economy; and providing motor torque to the vehicle based on the dynamic limiting. |
地址 |
Dearborn MI US |