Controller for an automatic motor vehicle transmission
US5711712A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 19, 1996 |
| Grant date | Jan 27, 1998 |
| Priority date | — |
| Expiry date | Jul 19, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/0081
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A controller for an automatic motor vehicle transmission automatically sets a transmission ratio of a continuous transmission through the use of stored data as a function of a gas pedal position and a vehicle speed. Through the use of a fuzzy logic control circuit, the engine speed is automatically set by continuous regulation of the transmission ratio, specifically to the range of optimum efficiency, minimum exhaust gas emission or maximum power. The load condition of the motor vehicle, the driving style of the driver and, as the case may be, the type of the road are taken into account in this process. A correction circuit carries out dynamic corrections of the transmission ratio. The data can be stored, for example, in control characteristic maps, or can be generated by another analogous fuzzy logic control circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.