发明申请
- 专利标题: METHOD AND APPARATUS TO OPERATE A MULTI-MODE POWERTRAIN SYSTEM TO ACHIEVE LIGHT-OFF OF A CATALYTIC DEVICE
- 专利标题(中): 操作多模动力系统以实现催化装置的关闭的方法和装置
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申请号: US13568036申请日: 2012-08-06
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公开(公告)号: US20140038775A1公开(公告)日: 2014-02-06
- 发明人: Anthony H. Heap , Kee Yong Kim , Yaoyao Wei , Alexander K. Rustoni
- 申请人: Anthony H. Heap , Kee Yong Kim , Yaoyao Wei , Alexander K. Rustoni
- 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: F16H59/74
- IPC分类号: F16H59/74
摘要:
A multi-mode powertrain system employing a power-split configuration to transfer torque to a driveline includes an internal combustion engine fluidly coupled to an exhaust aftertreatment system having a catalytic device. A method for controlling the multi-mode powertrain system includes identifying permitted transition paths between a plurality of engine states. The plurality of engine states includes a default state, a pre-light-off state, a light-off state, and a post-light-off state. A preferred one of the plurality of engine states is selected in response to an output torque request and an operating temperature of the catalytic device. Engine operation is transitioned to the preferred one of the plurality of engine states via the permitted transition paths, and the engine is operated in the preferred one of the plurality of engine states.