公开(公告)号：US08825319B2

公开(公告)日：2014-09-02

申请号：US13767320

申请日：2013-02-14

Applicant: GM Global Technology Operations LLC

Inventor： Christopher E. Whitney ,  Klaus Pochner ,  Colin Hultengren ,  Krishnedu Kar

IPC: B60W10/06 ,  B60W10/02 ,  B60W30/18

CPC classification number: B60W30/18027 ,  B60W10/02 ,  B60W10/06 ,  B60W30/18063 ,  B60W2710/065 ,  B60W2710/0666 ,  B60W2720/106 ,  Y10T477/639 ,  Y10T477/6418

Abstract: A method of controlling the performance of a vehicle from a stationary condition includes operating a vehicle powertrain in a creep mode following the disengagement of a driver-operated braking device; and operating the vehicle powertrain in a launch mode following an engagement of a driver-operated acceleration device subsequent to the disengagement of the driver-operated braking device. Operating a vehicle powertrain in a creep mode includes: applying a friction clutch to couple an engine crankshaft of the vehicle powertrain with an input shaft of the transmission; determining a torque command to accelerate the vehicle powertrain at a predetermined rate; providing the torque command to an engine controller to controllably increase the input torque to the transmission; and operating a closed loop engine speed control module to prevent the crankshaft speed from slowing below a predetermined engine idle speed.

Abstract translation: 一种从静止状态控制车辆的性能的方法包括在驱动器操作的制动装置脱离之后以蠕变模式操作车辆动力传动系; 以及在驱动器操作的制动装置的分离之后驾驶员操作的加速装置的接合之后，以发射模式操作车辆动力系。 以蠕变模式操作车辆动力传动系统包括：施加摩擦离合器以将车辆动力系的发动机曲轴与变速器的输入轴联接; 确定以预定速率加速所述车辆动力系的转矩指令; 向发动机控制器提供转矩指令以可控地增加对变速器的输入转矩; 并且操作闭环发动机速度控制模块以防止曲轴速度在预定的发动机怠速下降低。