发明名称 |
Double transition shift control in an automatic powershifting transmission |
摘要 |
A system and method for controlling double transition shifts in an automatic transmission having multiple gear sections. During a double transition shift, the system performs simultaneous closed loop control of the primary oncoming clutch in the primary gear section and the secondary off-going clutch of the secondary gear section. Before the input shaft of the secondary gear section is fully pulled down or the secondary off-going clutch becomes overheated, the system switches closed loop control of the input shaft to the secondary on-coming clutch of the secondary gear section. The system utilizes model -based calculations to determine the initial clutch pressure settings when a clutch enters closed loop control. |
申请公布号 |
AU2011326402(B2) |
申请公布日期 |
2015.08.06 |
申请号 |
AU20110326402 |
申请日期 |
2011.11.11 |
申请人 |
ALLISON TRANSMISSION, INC. |
发明人 |
BYERLY, JOHN ANDREW;KRESSE, JOHN P.;RAINS, MARK A.;RUNDE, JEFFREY K. |
分类号 |
F16H61/04;F16H61/16;F16H61/18 |
主分类号 |
F16H61/04 |
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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