Variable bleed solenoid recovery system
US8086380B2 · kind B2 · utility
0Cited by
16References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 26, 2007 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Apr 28, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/0739
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A recovery control system and method for automatic transmissions includes a diagnostic module that determines a fault condition of a variable bleed solenoid (VBS) when the automatic transmission fails to establish a desired drive ratio. A recovery module initiates a recovery cycle of the VBS based on the fault condition. The fault condition includes one of a clutch stuck-on condition and a clutch stuck-off condition. A clutch controlled by the VBS fails to disengage during the clutch stuck-on condition, and the clutch fails to engage during the clutch stuck-on condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.