发明授权
US09296290B2 Multiple-ratio transmission downshift strategy for hybrid electric vehicle powertrains 有权
混合动力汽车动力系统的多比率变速减速策略

Multiple-ratio transmission downshift strategy for hybrid electric vehicle powertrains
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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