公开(公告)号：US09212741B1

公开(公告)日：2015-12-15

申请号：US14337506

申请日：2014-07-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jay Ho ,  David William Minner

IPC: G06F17/00 ,  F16H61/02 ,  F16H61/18 ,  F16H59/36 ,  F16H59/70

CPC classification number: F16H61/0213 ,  F16H59/70 ,  F16H61/18 ,  F16H2059/366 ,  F16H2061/0244

Abstract: A method of controlling an automatic transmission connected to an engine in a motor vehicle employs a switch for requesting selection of transmission speed-ratio ranges. According to the method, the switch receives an input signal and generates an output signal having the same duration as the input signal. A controller programmed with an engine threshold speed and a threshold signal duration receives and compares the output signal with the threshold signal duration. The controller also determines a current transmission speed-ratio range and a transmission threshold speed-ratio range that is defined by engine's threshold speed. The controller additionally commands the transmission to change the current speed-ratio range to a neighboring speed-ratio range if the signal duration is less than or equal to the threshold. Furthermore, the controller commands the transmission to change the current speed-ratio range to the threshold speed-ratio range if the signal duration is greater than the threshold.

Abstract translation: 控制与机动车辆中的发动机连接的自动变速器的方法采用用于请求选择变速比范围的开关。 根据该方法，开关接收输入信号并产生与输入信号具有相同持续时间的输出信号。 编程有发动机阈值速度和阈值信号持续时间的控制器接收输出信号和阈值信号持续时间。 控制器还确定由发动机的阈值速度定义的当前传动速度比范围和传动阈值速比范围。 如果信号持续时间小于或等于阈值，则控制器另外命令传输将当前速比范围改变为相邻速度比范围。 此外，如果信号持续时间大于阈值，则控制器命令变速器将当前速比范围改变为阈值速比范围。