发明申请
- 专利标题: STAND ALONE ENGINE SPEED CONTROL AT COLD START FOR HYBRID TRANSMISSION
- 专利标题(中): 独立发动机速度控制在冷启动混合传输
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申请号: US13273305申请日: 2011-10-14
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公开(公告)号: US20130096744A1公开(公告)日: 2013-04-18
- 发明人: Jy-Jen F. SAH , Lan WANG , Paul A. STANOWSKI , Neal A. CHAPERON
- 申请人: Jy-Jen F. SAH , Lan WANG , Paul A. STANOWSKI , Neal A. CHAPERON
- 申请人地址: US MI Detroit
- 专利权人: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- 当前专利权人: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- 当前专利权人地址: US MI Detroit
- 主分类号: B60W20/00
- IPC分类号: B60W20/00
摘要:
A hybrid powertrain includes and internal combustion engine, an energy storage device, an electro-mechanical transmission having at least one electric machine rotatably coupled to the engine. The electro-mechanical transmission is selectively controllably operative to transmit torque among the engine and the at least one electric machine. A method to start operation of the internal combustion engine includes initiating rotation of a crankshaft of the engine with the at least one electric machine until a first predetermined crankshaft speed is achieved, firing the engine while controlling engine speed with the at least one electric machine until a flare threshold occurs, controlling the engine speed without any interaction from the at least one electric machine based on controlling combustion parameters of the engine, and when a predetermined condition occurs, controlling the engine speed with the at least one electric machine while the engine is still firing.