Line pressure control device for the hydraulic control system of an automatic power transmission
US4308765A · kind A · utility
14Cited by
17References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1979 |
| Grant date | Jan 5, 1982 |
| Priority date | — |
| Expiry date | Jan 26, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/21
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In a hydraulic control system of an automatic power transmission is provided a line pressure control device which is operative to supply the pressure regulator valve of the control system a fluid pressure equal to the throttle pressure when the throttle pressure is lower than a predetermined value and a fluid pressure maintained at the predetermined value when the throttle pressure is higher than such a value or under conditions in which the transmission mechanism is in a forward drive gear condition in which engine braking can be effected in a vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.