Clutch to clutch tie-up steady-state diagnostic
US7591756B2 · kind B2 · utility
1Cited by
1References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 6, 2007 |
| Grant date | Sep 22, 2009 |
| Priority date | — |
| Expiry date | Mar 19, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S477/906
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method of regulating operation of an automatic transmission includes identifying a tie-up condition of the automatic transmission, adjusting a pressure of a transmission element in response to the tie-up condition and determining whether a first gear ratio of the automatic transmission holds. The pressure is set to zero if the gear ratio does not hold and a faulty transmission element is identified as one associated with a second gear ratio that is lower than said first gear ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.