公开(公告)号：US20190210603A1

公开(公告)日：2019-07-11

申请号：US15864564

申请日：2018-01-08

申请人： FORD GLOBAL TECHNOLOGIES, LLC

发明人： Yang XU ,  Zhengyu DAI ,  Guopeng HU ,  Sathish ATLURI ,  David PETERSON ,  Qi WANG

IPC分类号： B60W30/18 ,  B60W10/02 ,  B60W10/184

摘要： A vehicle includes a transmission, friction brakes, and a controller. The transmission has a clutch that is configured to transfer torque from an input of the transmission to a drive wheel. The controller is programmed to, in response to application of the friction brakes resulting in a stationary position of the vehicle, disengage the clutch to establish a neutral condition of the transmission. The controller is also programmed to, in response to a command to launch the vehicle while the transmission is in the neutral condition, engage the clutch. The controller is further programmed to, in response to an estimated wheel torque exceeding a rollback threshold during the clutch engagement, release the friction brakes. The wheel torque is based on an estimated clutch torque which is based on a clutch pressure and a transmission input torque.