发明授权
- 专利标题: Multiple-ratio transmission downshift strategy for hybrid electric vehicle powertrains
- 专利标题(中): 混合动力汽车动力系统的多比率变速减速策略
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申请号: US12732642申请日: 2010-03-26
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公开(公告)号: US09296290B2公开(公告)日: 2016-03-29
- 发明人: Walter Joseph Ortmann , Daniel Scott Colvin , Brian Thomas Soo
- 申请人: Walter Joseph Ortmann , Daniel Scott Colvin , Brian Thomas Soo
- 申请人地址: US MI Dearborn
- 专利权人: Ford Global Technologies, LLC
- 当前专利权人: Ford Global Technologies, LLC
- 当前专利权人地址: US MI Dearborn
- 代理机构: Brooks Kushman P.C.
- 代理商 David B. Kelley
- 主分类号: B60K6/48
- IPC分类号: B60K6/48 ; B60W10/06 ; B60W10/08 ; B60W10/115 ; B60W20/00 ; B60W30/19 ; F16H61/02 ; F16H59/50
摘要:
A control system and method for a hybrid electric vehicle powertrain supplies battery power boost torque to vehicle traction wheels to modify shift points for a multiple ratio transmission in the powertrain. A shift schedule is adjusted to avoid a downshift for small changes in torque demand, thus reducing shift frequency due to small transient changes in torque demand.
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