发明名称 |
System and method for optimizing downshifting of a transmission during vehicle deceleration |
摘要 |
The present disclosure provides a method of selecting a gear ratio of a transmission. The method includes measuring a current road grade with a sensing device and communicating the current road grade measurement to the controller. The controller receives a signal corresponding to a service brake input and determines a desired maximum acceleration limit of the vehicle. The method also includes calculating a predicted vehicle acceleration, measuring a current vehicle acceleration, and calculating an error value as a function of the predicted vehicle acceleration and measured vehicle acceleration. The method also computes an estimated required tractive braking effort and estimated tractive braking effort for at least one of N automatically selectable gear ratios of the transmission and selects one gear ratio of the N automatically selectable gear ratios for the operation of the transmission based on a comparison of the estimated required tractive braking effort and estimated tractive braking effort. |
申请公布号 |
AU2013389003(B2) |
申请公布日期 |
2016.09.08 |
申请号 |
AU20130389003 |
申请日期 |
2013.06.18 |
申请人 |
ALLISON TRANSMISSION, INC. |
发明人 |
KRESSE, JOHN;BYERLY, JOHN A.;DYGERT, TODD;RAINS, MARK A. |
分类号 |
F16H61/02;F16H59/14;F16H59/54;F16H59/66 |
主分类号 |
F16H61/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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