公开(公告)号：US20170241520A1

公开(公告)日：2017-08-24

申请号：US15047160

申请日：2016-02-18

Applicant: GM Global Technology Operations LLC

Inventor： Timothy J. Reinhart ,  Christopher G. Benson ,  Timothy Z. Jin ,  Brady Stein

IPC: F16H7/08 ,  G01L19/08 ,  F16H7/06 ,  B60K25/02 ,  F16D48/02

CPC classification number: F16H7/0827 ,  B60K25/02 ,  B60K2025/022 ,  B60Y2200/14 ,  B60Y2200/142 ,  B60Y2400/306 ,  B60Y2400/424 ,  F16D13/52 ,  F16D25/0638 ,  F16D25/14 ,  F16D2300/18 ,  F16D2500/3024 ,  F16H7/06 ,  F16H9/26 ,  F16H41/24 ,  F16H61/36 ,  G01L19/08

Abstract: The present invention provides improved, real time sensing of pressure supplied to the hydraulic operator of a clutch for a motor vehicle driveline power take off. A proportional sensor in the hydraulic line to the power take off clutch actuator provides a data signal in real time of the actual pressure applied to the clutch actuator. This signal is provided to the power take off control module (PCM) and/or to the transmission control module (TCM). The power take off control module, having instantaneous data regarding the pressure applied to the hydraulic operator achieves two important operating functions: monitoring and feedback.

公开(公告)号：US09939050B2

公开(公告)日：2018-04-10

申请号：US15047160

申请日：2016-02-18

Applicant: GM Global Technology Operations LLC

Inventor： Timothy J. Reinhart ,  Christopher G. Benson ,  Timothy Z. Jin ,  Brady Stein

IPC: B60K25/02 ,  F16H7/08 ,  F16D48/02 ,  F16H7/06 ,  G01L19/08 ,  F16D13/52 ,  F16H41/24

CPC classification number: F16H7/0827 ,  B60K25/02 ,  B60K2025/022 ,  B60Y2200/14 ,  B60Y2200/142 ,  B60Y2400/306 ,  B60Y2400/424 ,  F16D13/52 ,  F16D25/0638 ,  F16D25/14 ,  F16D2300/18 ,  F16D2500/3024 ,  F16H7/06 ,  F16H9/26 ,  F16H41/24 ,  F16H61/36 ,  G01L19/08

Abstract: The present invention provides improved, real time sensing of pressure supplied to the hydraulic operator of a clutch for a motor vehicle driveline power take off. A proportional sensor in the hydraulic line to the power take off clutch actuator provides a data signal in real time of the actual pressure applied to the clutch actuator. This signal is provided to the power take off control module (PCM) and/or to the transmission control module (TCM). The power take off control module, having instantaneous data regarding the pressure applied to the hydraulic operator achieves two important operating functions: monitoring and feedback.

公开(公告)号：US11841078B2

公开(公告)日：2023-12-12

申请号：US17508584

申请日：2021-10-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Timothy Z. Jin ,  Steven P. Moorman ,  Kenneth William Lampert ,  Patrick Jebson Carroll ,  Leah Rose Bridson

IPC: F16H61/02 ,  G05D16/20 ,  F16H61/12

CPC classification number: F16H61/0206 ,  F16H61/12 ,  G05D16/2022 ,  F16H2061/1208

Abstract: A transmission hydraulic control system includes a manual valve, a default valve, and a clutch prime valve. The manual valve allows fluid flow from a pressurized line to a drive line when the manual valve is open (when a transmission is in drive or reverse). The manual valve prevents fluid flow from the pressurized line to the drive line when the manual valve is closed (when the transmission is in neutral or park). The clutch prime valve allows fluid to flow from the pressurized line to the drive line, and thereby bypass the manual valve, when the manual valve is closed and the clutch prime valve is open. The default valve allows fluid bypassing the manual valve to flow to prime a clutch of the transmission when the default valve is open. The clutch prime valve prevents fluid from bypassing the manual valve when the clutch prime valve is closed.