公开(公告)号：US09625035B2

公开(公告)日：2017-04-18

申请号：US14856085

申请日：2015-09-16

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Woowon Chung ,  Jeryl McIver

IPC: F16H61/66 ,  F16H61/00 ,  B60W10/101

CPC classification number: F16H61/66 ,  B60W10/101 ,  B60W2540/106 ,  F16H59/18 ,  F16H2061/009 ,  F16H2061/0096

Abstract: A method of controlling a transmission includes detecting a first inflection point and a second inflection point in the movement of the accelerator pedal. An amplitude between the first inflection point and the second inflection point is then calculated, and a period of time between the first inflection point and the second inflection point is measured. An attenuation coefficient is defined from the amplitude and the measured period of time between the first and second inflection points. A current iteration temporary gear ratio is defined as the gear ratio calculated during the most recent iteration of an iterative gear ratio selection algorithm, and is adjusted with the defined attenuation coefficient to define a current iteration final output gear ratio. The operation of the transmission is then controlled to change the transmission from a previous iteration final output gear ratio to the current iteration final output gear ratio.

公开(公告)号：US20150369364A1

公开(公告)日：2015-12-24

申请号：US14313063

申请日：2014-06-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： David H. Vu ,  Xuefeng Tim Tao ,  Jayson S. Schwalm ,  Craig J. Hawkins ,  Jeryl McIver

IPC: F16H61/688 ,  F16D48/06

CPC classification number: F16H61/688 ,  F16D48/06 ,  F16D2500/10412 ,  F16D2500/1045 ,  F16D2500/3026 ,  F16D2500/30425 ,  F16D2500/3067 ,  F16D2500/30806 ,  F16D2500/50236 ,  F16D2500/50281 ,  F16D2500/50287 ,  F16D2500/5045 ,  F16D2500/70264 ,  F16D2500/7041 ,  F16D2500/70605 ,  F16D2500/70626 ,  F16H2342/042

Abstract: A method for learning the bite point of a position-controlled clutch in a vehicle having an engine and a transmission includes commanding an engagement of a clutch fork via a controller when the transmission is in park and the engine is idling. The method also includes controlling an apply position of the clutch via the controller, calculating a clutch torque capacity of the clutch, and measuring the apply position via a position sensor. The apply position is recorded as the clutch bite point when the calculated clutch torque capacity equals a calibrated clutch torque capacity. The transmission is then controlled using the recorded clutch bite point. A system includes the transmission, input clutches, and a controller configured to execute the method. A vehicle includes an engine, the transmission, the position-controlled input clutch, and the controller, as well as a clutch position sensor.

Abstract translation: 用于学习具有发动机和变速器的车辆中的位置控制的离合器的咬点的方法包括当变速器处于停车状态并且发动机空转时通过控制器指令离合器拨叉的接合。 该方法还包括经由控制器控制离合器的施加位置，计算离合器的离合器扭矩能力，以及经由位置传感器测量施加位置。 当计算的离合器扭矩容量等于校准的离合器扭矩容量时，应用位置记录为离合器咬合点。 然后使用记录的离合器咬点控制变速箱。 系统包括传输，输入离合器和被配置为执行该方法的控制器。 车辆包括发动机，变速器，位置控制输入离合器和控制器以及离合器位置传感器。