公开(公告)号：US09803704B1

公开(公告)日：2017-10-31

申请号：US15251646

申请日：2016-08-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dara Monajemi ,  Brian M Porto

IPC: B60W10/06 ,  F16D48/06 ,  B60W10/115

CPC classification number: F16D48/06 ,  B60W10/06 ,  B60W10/115 ,  F16D2500/104 ,  F16D2500/30401 ,  F16D2500/30814 ,  F16D2500/50661 ,  F16H61/04

Abstract: A transmission for a vehicle having a prime mover with an output shaft. The transmission includes an offgoing clutch that is selectively connected to the output shaft, and a controller in communication with the prime mover. The controller includes an offgoing clutch control module that determines an offgoing clutch torque profile at the start of a torque phase in a power downshift that does not exceed a predetermined offgoing clutch energy threshold and a torque request module that limits a rate of input torque into the transmission from the prime mover based upon the determined offgoing clutch torque profile.

公开(公告)号：US10161512B2

公开(公告)日：2018-12-25

申请号：US15245909

申请日：2016-08-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Brian M Porto ,  Jason Jousma ,  Patrick A Lewis ,  Jason M France

IPC: F16H45/02 ,  F16H61/14 ,  F16H39/42

Abstract: A transmission includes a torque converter with an impeller, a turbine, a torque converter clutch, a hydraulic torque converter clutch control circuit and a controller that commands a first pressure into the hydraulic torque converter clutch control circuit during a transition period between a torque converter clutch OFF mode to a torque converter clutch ON mode and prior to the torque converter clutch reaching capacity and a second pressure into the hydraulic torque converter clutch control circuit after the torque converter clutch reaches capacity.