Control system for automatic transmission
US5728026A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1996 |
| Grant date | Mar 17, 1998 |
| Priority date | — |
| Expiry date | Jun 14, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2059/506
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control system for an automatic transmission having a running status detector for detecting the running status of a vehicle to include an input torque from the engine; a running resistance estimator for estimating a running resistance on the basis of the running status of the vehicle; and shift characteristic changer for changing shift characteristics in accordance with the running resistance of the vehicle. The control system further comprises an engine output controller for reducing the output of the engine by a sub-throttle valve which acts independently of the driver at an overrun time of drive wheels; and an action status detector for detecting the action status of the sub-throttle valve. The running resistance estimator estimates the running resistance of the vehicle on the basis of the running status detector and the action status detector of the sub-throttle valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.