Hydraulic control system for transmission
US4955260A · kind A · utility
17Cited by
10References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 31, 1989 |
| Grant date | Sep 11, 1990 |
| Priority date | — |
| Expiry date | Mar 31, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/66281
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
There is shown a hydraulic control system for a transmission of the type wherein a gearing mechanism is combined with a V-belt type continuously variable transmission mechanism. The system comprises a hydraulic arrangement wherein a hydraulic fluid pressure supplied to a pulley cylinder chamber which the tension of the V-belt is variable with. The level of the hydraulic fluid pressure is elevated or increased immediately before or during shifting from the torque transmission through the gearing mechanism to the torque transmission through the V-belt type continuously variable transmission mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.