Control apparatus for automatic transmission and control method therefore
US5688207A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 2, 1996 |
| Grant date | Nov 18, 1997 |
| Priority date | — |
| Expiry date | Oct 2, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/022
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Detecting means for detecting driving conditions of a vehicle such as engine load such as throttle opening, vehicle speed, gear position or gear ratio and so on and memory means for storing characteristics of the vehicle such as engine power characteristic, torque converter characteristic, fuel consumption rate characteristic and so on are provided. Driving shaft torques before and after gear shift, an estimating value of fuel consumption rate and a gear shift point of a transmission are calculated in real time to perform transmission control using the signals from said detecting means and the signals from said memory means. With the construction according to the present invention described above, an automatic transmission can be controlled in real time by calculating a gear shift point of the transmission in a short time through estimating the driving shaft torques before and after gear shift.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.