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.

公开(公告)号：US20170336287A1

公开(公告)日：2017-11-23

申请号：US15488763

申请日：2017-04-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Sean R. Wagner ,  Thomas A. Perry ,  Scott W. Piper ,  Cheol W. Kim

IPC: G01M13/02 ,  G01D5/14 ,  G01R33/00 ,  F16H61/32

CPC classification number: G01M13/021 ,  F16H61/28 ,  F16H61/2815 ,  F16H61/36 ,  F16H2061/326 ,  F16H2063/423 ,  G01D5/145 ,  G01R33/0011

Abstract: A transmission range selection sensor includes a housing defining a bore extending along a central axis. A piston is slideably disposed within the bore. A magnet carrier is attached to and moveable with the piston. A magnet is supported by and moveable with the magnet carrier. A first magnetic sensor and a second magnetic sensor are supported by the housing and are spaced from each other along the central axis. A position of the magnet carrier along the central axis is determinable from a sensed magnetic flux from the first and second magnetic sensors. The sensor includes at least one magnetic flux concentrator attached to one of the magnet carrier or the housing. The flux concentrator is operable to concentrate the magnetic flux toward at least one of the first magnetic sensor or the second magnetic sensor depending upon a position of the magnet along the central axis.

公开(公告)号：US10168249B2

公开(公告)日：2019-01-01

申请号：US15488763

申请日：2017-04-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Sean R. Wagner ,  Thomas A. Perry ,  Scott W. Piper ,  Cheol W. Kim

IPC: G01M13/02 ,  G01R33/00 ,  F16H61/36 ,  G01D5/14 ,  F16H61/32 ,  F16H63/42

Abstract: A transmission range selection sensor includes a housing defining a bore extending along a central axis. A piston is slideably disposed within the bore. A magnet carrier is attached to and moveable with the piston. A magnet is supported by and moveable with the magnet carrier. A first magnetic sensor and a second magnetic sensor are supported by the housing and are spaced from each other along the central axis. A position of the magnet carrier along the central axis is determinable from a sensed magnetic flux from the first and second magnetic sensors. The sensor includes at least one magnetic flux concentrator attached to one of the magnet carrier or the housing. The flux concentrator is operable to concentrate the magnetic flux toward at least one of the first magnetic sensor or the second magnetic sensor depending upon a position of the magnet along the central axis.