Control system for motor vehicles equipped with a torque converter and a lock-up clutch
US5637052A · kind A · utility
18Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1995 |
| Grant date | Jun 10, 1997 |
| Priority date | — |
| Expiry date | Dec 22, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/145
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In a control system for controlling motor vehicles in such a manner that the drive force of the vehicle is determined by the accelerator pedal stroke and the vehicle speed, the fuel consumption is minimized by appropriately selecting the gear ratio of the power transmission system under each current operating condition. In particular, the present invention accounts for the slip ratio of the lock-up clutch as well as the transmission efficiency of the torque converter by noting the fact that the lock-up clutch operates under semi-tight conditions as well as under tight and loose conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.