Invention Grant
- Patent Title: Hydraulic control unit embedded accumulator circuit
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Application No.: US15664586Application Date: 2017-07-31
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Publication No.: US10336331B2Publication Date: 2019-07-02
- Inventor: William Mayhew , Stephen Tokish
- Applicant: William Mayhew , Stephen Tokish
- Applicant Address: US MI Auburn Hills
- Assignee: FCA US LLC
- Current Assignee: FCA US LLC
- Current Assignee Address: US MI Auburn Hills
- Agent Ralph E. Smith
- Main IPC: B60W30/18
- IPC: B60W30/18 ; B60W10/06 ; B60W10/11 ; F16H61/00 ; B60W10/115 ; B60W30/192

Abstract:
A vehicle includes a hydraulic control unit (HCU) having a set of electrically-actuated valves configured to open/close to accumulate a pressurized hydraulic fluid in a hydraulic apply circuit of a first clutch of a transmission; a hydraulic fluid pump mechanically driven by an engine and configured to provide the pressurized hydraulic fluid to the HCU; and a controller configured to: prior to temporarily stopping the engine, control the engine and the HCU such that the pressurized hydraulic fluid accumulates in the hydraulic apply circuit of the first clutch to a desired hydraulic fluid pressure, and upon restarting the engine, control the set of electrically-actuated valves of the HCU to provide the pressurized hydraulic fluid from the hydraulic apply circuit first clutch to a hydraulic apply circuit for a second clutch of the transmission to apply the second clutch and shift the transmission into drive.
Public/Granted literature
- US20190031195A1 HYDRAULIC CONTROL UNIT EMBEDDED ACCUMULATOR CIRCUIT Public/Granted day:2019-01-31
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