Torque transmitting mechanism engagement control system and method
US7497799B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2006 |
| Grant date | Mar 3, 2009 |
| Priority date | — |
| Expiry date | Apr 21, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/062
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control system operable to engage a torque transmitting mechanism, the control system having at least one variable bleed solenoid valve operable to selectively provide pressurized fluid to selectively engage at least one torque transmitting mechanism. An electronic control unit is also provided to provide control to the at least one variable bleed solenoid valve. The electronic control unit commands the variable bleed solenoid valve to provide the pressurized fluid to the at least one torque transmitting mechanism for a first predetermined time and to subsequently substantially disallow the pressurized fluid to the at least one torque transmitting mechanism for a second predetermined time subsequent to the first predetermined time. The electronic control unit subsequently commands an intermediate pressure level to trim the torque transmitting mechanism into engagement. A method for providing engagement to the torque transmitting mechanism is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.