Pressure control apparatus for the automatic transmission of automotive vehicles
US4106367A · kind A · utility
15Cited by
9References
13Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Oct 3, 1975 |
| Grant date | Aug 15, 1978 |
| Priority date | — |
| Expiry date | Oct 3, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/0258
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control generator starting from supplied data relative to the functioning of the transmission and of the motor, supplies a transfer voltage proportional to the line pressure. The control comprises a primary electrical loop containing a pressure tap and a secondary hydraulic loop comprising an electro-hydraulic transducer. The line pressure is thus controlled. The stability and control performance of the transmission are improved by means of electrical correction circuits. The apparatus may be adapted to any desired type of automatic transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.