Control apparatus and control method for continuously variable transmission
US8296023B2 · kind B2 · utility
4Cited by
1References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 27, 2008 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | May 25, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/145
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An ECU executes a program including the steps of: learning a differential pressure of a lock-up clutch; determining whether or not learning has been completed when a vehicle is in a coasting state and a brake is applied; lowering the lock-up differential pressure such that the lock-up clutch can be disengaged immediately and prohibiting or suppressing control for increasing transmission gain when learning has been completed; and increasing a lower limit guard value for the lock-up differential pressure and performing control for increasing the transmission gain when learning has not been completed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.