Servo-assisted control system for the gears of a double clutch gearbox of a motor vehicle
US7464617B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2005 |
| Grant date | Dec 16, 2008 |
| Priority date | — |
| Expiry date | Jan 4, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/20024
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control system including: first and second actuator devices for controlling the engagement of first and second sets of gears by selection and engagement movements, respectively; a first solenoid valve arranged to put the first or the second actuator device alternatively into communication with a fluid supply; a second solenoid valve arranged to control the selection movements of the actuator device which is in communication with the fluid supply; a distributor interposed between the fluid supply and the actuator devices and displaceable under the control of the first solenoid valve between a first position in which it puts the fluid supply into communication with the first actuator device and a second position in which it puts the fluid supply into communication with the second actuator device; third and fourth proportional pressure solenoid valves arranged to control the engagement movements of the actuator device which is in communication with the fluid supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.