Control system and method for transmission clutch control
US8972131B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Jun 10, 2011 |
| Grant date | Mar 3, 2015 |
| Priority date | — |
| Expiry date | Apr 17, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/686
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control system for a transmission includes an actuator module, a timer module, and a pulse module. The actuator module engages N hydraulic clutches and disengages M hydraulic clutches to operate the transmission in a gear ratio, wherein N and M are integers greater than zero. The timer module determines a first period starting when the transmission begins operating in the gear ratio. The pulse module selectively supplies a pressure pulse to P of the M hydraulic clutches based on the first period, wherein P is an integer greater than zero. A method for controlling a transmission is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.