Accumulator back pressure control apparatus for automatic transmission
US4722250A · kind A · utility
15Cited by
47References
4Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 31, 1986 |
| Grant date | Feb 2, 1988 |
| Priority date | — |
| Expiry date | Mar 31, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/067
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An accumulator control device for controlling the back pressure of an accumulator includes an accumulating control valve having a first port communicating with a control oil source and a second port communicating with an accumulator back pressure chamber. The accumulator control valve is controlled by a oil pressure from a shift control. According to the control position of the shift control, the accumulator control valve controls the communicating state of the first and second ports to increase or decrease the back pressure of the accumulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.