公开(公告)号：US20190211928A1

公开(公告)日：2019-07-11

申请号：US15868212

申请日：2018-01-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dumitru Puiu ,  Vijay A. Neelakantan ,  Gurdeep Singh ,  Ryan M. Jenness

IPC: F16H63/34 ,  B60T1/00

CPC classification number: F16H63/3475 ,  B60T1/005 ,  F16H63/3425

Abstract: A parking actuator assembly for an automatic transmission includes a park pawl that is rotatable between an in-park position and an out-of-park position. An actuator assembly is configured to be moved between a park-actuated position and a park-disengaged position, the actuator assembly being configured to rotate the park pawl into the in-park position when the actuator is moved into the park-actuated position. An actuator rod is slidably coupled to the actuator assembly. In some forms, the actuator assembly remains in contact with the park pawl from the park-actuated position to the park-disengaged position. In some forms, at least one latching solenoid is included, and the latching solenoid(s) as well as a park actuator motor may be disposed within a main transmission system. A verification sensor may be included to determine the position.

公开(公告)号：US20190063597A1

公开(公告)日：2019-02-28

申请号：US15690720

申请日：2017-08-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Todd R. Berger ,  Kelly Eber ,  Steven P. Moorman ,  Christopher G. Benson ,  Cheol W. Kim ,  Ryan M. Jenness ,  Christopher M. Kaminski

IPC: F16H61/00 ,  F16D25/00 ,  F16D41/00 ,  F16D48/02 ,  F16H63/34 ,  F16H61/30

Abstract: A hydraulic control system for a transmission of a motor vehicle includes a source of pressurized hydraulic fluid that communicates with an analog electronic transmission range selection (ETRS) subsystem or a manual valve. The ETRS subsystem includes an ETRS valve, a park servo, a park mechanism, a mode valve, and a plurality of solenoids. The ETRS and manual valve communicate with a clutch actuator subsystem that engages a one-way clutch and six clutches/brakes.