公开(公告)号：US10190684B2

公开(公告)日：2019-01-29

申请号：US14944459

申请日：2015-11-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： David H. Vu ,  Christopher Jay Weingartz ,  Craig J. Hawkins ,  Pratap A. Naick

IPC: F16H9/18 ,  F16H61/662 ,  F16H61/66

Abstract: A powertrain system including an internal combustion engine rotatably coupled to a continuously variable transmission (CVT) is described. A method for controlling the CVT includes determining minimum and maximum CVT input speeds in response to an accelerator pedal position, and monitoring vehicle speed and a CVT input speed. A target CVT input acceleration rate is determined based upon the vehicle speed, and a desired speed ratio is determined that is responsive to the target CVT input acceleration rate. The CVT is controlled based upon the desired speed ratio.

公开(公告)号：US20170138471A1

公开(公告)日：2017-05-18

申请号：US14944459

申请日：2015-11-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： David H. Vu ,  Christopher Jay Weingartz ,  Craig J. Hawkins ,  Pratap A. Naick

IPC: F16H61/662 ,  F16H9/18

CPC classification number: F16H61/662 ,  F16H9/18 ,  F16H59/44 ,  F16H61/66254 ,  F16H61/66259 ,  F16H2061/6615

Abstract: A powertrain system including an internal combustion engine rotatably coupled to a continuously variable transmission (CVT) is described. A method for controlling the CVT includes determining minimum and maximum CVT input speeds in response to an accelerator pedal position, and monitoring vehicle speed and a CVT input speed. A target CVT input acceleration rate is determined based upon the vehicle speed, and a desired speed ratio is determined that is responsive to the target CVT input acceleration rate. The CVT is controlled based upon the desired speed ratio.