Clutch control valve for an automatic transmission control circuit
US4430910A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1981 |
| Grant date | Feb 14, 1984 |
| Priority date | — |
| Expiry date | Jun 8, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/067
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A clutch pressure modifier valve for an automatic control circuit for a power transmission mechanism in a vehicle driveline wherein provision is made during ratio changes that requires engagement of a fluid pressure operated transmission clutch for modifying a clutch engagement pressure to compensate for the effect of centrifugal pressure build up in the pressure chamber of the clutch structure due to rotation of the clutch at high speeds during a shift interval whereby the timing of the clutch engagement is relatively independent of the rotary speed of the clutch during engagement and whereby the torque capacity of the clutch more closely matches the torque requirements of the driveline during ratio changes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.