- 专利标题: Method of operating a powertrain system during coasting operation
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申请号: US16431191申请日: 2019-06-04
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公开(公告)号: US11332138B2公开(公告)日: 2022-05-17
- 发明人: Anthony H. Heap , Jordan Billet
- 申请人: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- 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
- 代理机构: Quinn IP Law
- 主分类号: B60W30/18
- IPC分类号: B60W30/18 ; B60W20/00 ; F16H63/40 ; B60T8/172 ; B60T7/04 ; B60W10/11 ; B60W10/101 ; B60W10/10 ; B60W10/184
摘要:
A method of operating a powertrain system during coasting operation, wherein the powertrain system includes a driveline component (e.g., a transmission, drive shaft, differential, axle or wheel) having an output torque profile. The method includes: (i) determining a desired output torque transition profile for the driveline component between a first transition point before an end of a first state, and a second transition point after a beginning of a second state; and (ii) in response to a braking torque request, generating a friction braking torque command to operate a friction braking system, and adjusting the friction braking torque command during a transitional state between the first and second transition points by an amount corresponding to a difference between a magnitude of the output torque profile and a magnitude of the desired output torque transition profile.
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