公开(公告)号：US20180328481A1

公开(公告)日：2018-11-15

申请号：US15594164

申请日：2017-05-12

申请人： GM Global Technology Operations LLC

发明人： Christopher J. Weingartz ,  Mohamed O. Egal ,  Mark S. Reinhart ,  Fie An ,  Xuefeng T. Tao

IPC分类号： F16H61/12 ,  F16H61/662

CPC分类号： F16H61/12 ,  F16H61/662 ,  F16H2061/1212 ,  F16H2061/1272

摘要： A variator control diagnostic system for an automobile vehicle includes a ratio error calculated by subtracting a transmission actual ratio from a commanded ratio. A first lookup table includes: an adjusted ratio error defined by adjusting the ratio error using a transmission fluid temperature value; and a rate curve compared against the adjusted ratio error to identify a lookup table output. A second lookup table provides a gross slip multiplier value based on a ratio bin torque offset value for a transmission ratio range. An adjusted error count is created by multiplying the gross slip multiplier value by the lookup table output.

公开(公告)号：US20190054912A1

公开(公告)日：2019-02-21

申请号：US15678192

申请日：2017-08-16

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Shawn M. Harris ,  Timothy R. Stockdale ,  Mark S. Reinhart ,  Leanne F. Giardini

IPC分类号： B60W10/04 ,  B60W10/18 ,  B60R25/04 ,  B60R25/06

CPC分类号： B60W10/04 ,  B60R25/04 ,  B60R25/06 ,  B60W10/18 ,  F16H61/22 ,  F16H63/3483 ,  F16H63/3491 ,  F16H63/483

摘要： A method for supporting car wash mode of a vehicle with internal electronic transmission range selection includes entering the vehicle into car wash mode with the engine off and the transmission in the Neutral position. Next, the method continues with monitoring the vehicle for misuse of car wash mode, and transitioning the vehicle transmission to Park from Neutral when misuse of car wash mode is detected.

公开(公告)号：US20180094723A1

公开(公告)日：2018-04-05

申请号：US15286080

申请日：2016-10-05

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Ronald F. Lochocki, JR. ,  Moussa Ndiaye ,  Bret Olson ,  Paul G. Otanez ,  Mark S. Reinhart ,  Jeryl McIver

IPC分类号： F16H61/688 ,  F16H61/66

CPC分类号： F16H61/688 ,  F16H59/68 ,  F16H61/12 ,  F16H61/66 ,  F16H2061/1224 ,  F16H2061/1284

摘要： A controller for a vehicle propulsion system that includes a prime mover, a transmission connected to the prime mover to receive input torque on an input shaft and to convert the input torque to an output torque on an output shaft, a transmission input shaft speed sensor, and a transmission output shaft speed sensor. The controller provides a gear ratio value that is based upon a signal indicating an operating condition of the transmission other than a signal from the transmission input shaft speed sensor and the transmission output shaft sensor.