| 发明名称 |
System and method for improved double transition shift operations for automatic transmissions |
| 摘要 |
A control system for an automatic transmission includes a double transition shift detection module and first and second clutch control modules. The double transition shift detection module detects whether a double transition shift operation is requested. The first clutch control module controls two of four transitioning clutches of the transmission during an inertia phase of the double transition shift operation. The second clutch control module controls each of the four transitioning clutches of the transmission during a torque phase of the double transition shift operation. |
| 申请公布号 |
US8862352(B2) |
申请公布日期 |
2014.10.14 |
| 申请号 |
US201113300039 |
申请日期 |
2011.11.18 |
| 申请人 |
|
发明人 |
Wilke Nathaniel E.;Marano John E.;Phillips Andrew W. |
| 分类号 |
G06F17/00;F16H61/04;F16H61/684;F16H61/06;F16H59/46 |
主分类号 |
G06F17/00 |
| 代理机构 |
|
代理人 |
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| 主权项 |
1. A control system for an automatic transmission, the control system comprising:
a double transition shift detection module that detects whether a double transition shift operation is requested; a first clutch control module that controls two of four transitioning clutches of the transmission during an inertia phase of the double transition shift operation; and a second clutch control module that controls each of the four transitioning clutches of the transmission during a torque phase of the double transition shift operation, wherein torque capacities for each of the four transitioning clutches are determined based on (i) desired clutch slip speeds for two of the four transitioning clutches and (ii) desired input shaft slip speed. |
| 地址 |
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