Controlled capacity torque converter clutch control during vehicle coast
US5535863A · kind A · utility
18Cited by
8References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1994 |
| Grant date | Jul 16, 1996 |
| Priority date | — |
| Expiry date | Sep 2, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/60
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A torque converter clutch control having a controlled capacity mode of operation wherein clutch slip is controlled to a reference slip during periods of positive engine torque provides for a coast mode of operation wherein the clutch slip is controlled to a reference slip during periods of negative torque conditions. The control allows the drivetrain of the vehicle to couple torque to the engine thereby reducing fueling requirements and posturing the system for more efficient transitions into the controlled capacity mode. Drivetrain disturbances are not transferred to the vehicle by virtue of the controlled slip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.