Control apparatus for regulating engagement of a fluid operated torque transmitting device
US5062321A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1991 |
| Grant date | Nov 5, 1991 |
| Priority date | — |
| Expiry date | Mar 11, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/0466
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An electronically mechanized control method for regulating the engagement rate or stroke time of a fluid operated torque transmitting device, wherein the flow rate is controlled through a coordinated control of the supply pressure and an on-off fluid restriction device. At the initiation of a shift involving engagement of the rate controlled torque transmitting device, an appropriate stroke time is determined in terms of a suitable combination of line pressure and fluid restriction to be commanded for the duration of the shift. The on-off fluid restriction device comprises a first orifice which always remains in the servo supply circuit and second orifice which is selectively connected in parallel with the first orifice via a solenoid operated shuttle valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.