发明名称 |
AUTOMATIC TRANSMISSION SHIFT CONTROL BASED ON TORQUE PHASE DETECTION USING MEASURED TRANSMISSION INPUT TORQUE |
摘要 |
A system and method for controlling a vehicle powertrain having a transmission to improve shift quality to detect the start of a torque phase of the shift based on a measured transmission input shaft torque. A torque sensor provides a signal to a controller that monitors initial rise time of the measured transmission input shaft torque. The torque sensor may be implemented by a strain gauge, a piezoelectric load cell, or a magneto-elastic torque sensor. The system may include a vehicle powertrain having an engine, a transmission coupled to the engine via a torque converter and a controller configured to initiate torque phase control when the slope of the transmission input shaft torque exceeds a predetermined threshold after initiation of the shift preparatory phase. |
申请公布号 |
US2014274556(A1) |
申请公布日期 |
2014.09.18 |
申请号 |
US201313832271 |
申请日期 |
2013.03.15 |
申请人 |
FORD GLOBAL TECHNOLOGIES, LLC |
发明人 |
Fujii Yuji;Gibson Alexander O'Connor;Riedle Bradley Dean;Lee Seung-Hoon;Pietron Gregory Michael;Yanakiev Diana;Kucharski Joseph F.;Kapas Nimrod |
分类号 |
B60W10/02;B60W10/11 |
主分类号 |
B60W10/02 |
代理机构 |
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代理人 |
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主权项 |
1. A method for controlling a vehicle having a transmission, comprising:
controlling actuators associated with an off-going clutch (OGC) and an on-coming clutch (OCC) of the transmission in response to a transmission input shaft torque sensor signal rate of change exceeding an associated threshold after initiation of a transmission shift. |
地址 |
Dearborn MI US |