Control system for a multi-speed transmission
US7752935B2 · kind B2 · utility
5Cited by
1References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2008 |
| Grant date | Jul 13, 2010 |
| Priority date | — |
| Expiry date | Jan 14, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86928
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic control circuit for a transmission includes a plurality of solenoids and valves in fluid communication with a plurality of actuators. The actuators are operable to actuate a plurality of torque transmitting devices. Selective activation of the solenoids allows for a pressurized fluid flow to activate at least one of the actuators in order to shift the transmission into a desired gear ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.