Invention Grant
- Patent Title: Dual clutch control system for integral torque converter and retarder and method thereof
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Application No.: US16392140Application Date: 2019-04-23
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Publication No.: US10975960B2Publication Date: 2021-04-13
- Inventor: Michael Rietdorf , Charles F. Long
- Applicant: ALLISON TRANSMISSION, INC.
- Applicant Address: US IN Indianapolis
- Assignee: ALLISON TRANSMISSION, INC.
- Current Assignee: ALLISON TRANSMISSION, INC.
- Current Assignee Address: US IN Indianapolis
- Agency: Taft Stettinius & Hollister LLP
- Agent Stephen F. Rost
- Main IPC: F16H61/14
- IPC: F16H61/14 ; F16D48/06 ; F16H45/02

Abstract:
A transmission system includes a fluid-coupling device, an electro-hydraulic control system, and a clutch. The fluid-coupling device includes an input coupled to an impeller, an output coupled to a turbine, and a stator disposed between the impeller and the turbine. The electro-hydraulic control system includes a flow valve disposed in fluid communication with the input and the output of the fluid-coupling device that is movable between at least a first position and a second position, at least one trim valve system fluidly coupled to the flow valve, and a solenoid disposed in fluid communication with the flow valve that is electrically controllable between an energized state and a de-energized state. The clutch is disposable in fluid communication with the flow valve and controllable between an applied position and an unapplied position.
Public/Granted literature
- US20190323567A1 DUAL CLUTCH CONTROL SYSTEM FOR INTEGRAL TORQUE CONVERTER AND RETARDER AND METHOD THEREOF Public/Granted day:2019-10-24
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