Device for controlling the speed shift operation of an automatic transmission
US4108022A · kind A · utility
9Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1976 |
| Grant date | Aug 22, 1978 |
| Priority date | — |
| Expiry date | Oct 27, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2059/743
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A device for controlling the speed shift operation of an automatic transmission including two change-over valves disposed in a passage transmitting the governor pressure to a servo chamber of a shift valve, the changing-over valves being actuated by the governor pressure and the throttle pressure so as to modify the governor pressure signal supplied to said shift valve thereby accomplishing a modification of a speed shift line to more favorably meet current exhaust gas purification requirements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.