Control system for steplessly variable power transmission
US5007147A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 1990 |
| Grant date | Apr 16, 1991 |
| Priority date | — |
| Expiry date | May 22, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/66259
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A steplessly variable power transmission includes a load change detecting device for detecting a change speed in an engine load when an engine load zone to which a value of the engine load belongs is changed from an intermediate zone to a specific zone other than the intermediate zone. A speed ratio hold device is provided for maintaining the speed ratio at a constant value determined in accordance with the change speed in the engine load obtained through the load detecting device and for providing the speed ratio control means with the constant value of the speed ratio as a control signal. The speed ratio is fixed at a value in accordance with change speed in an acceleration pedal stroke under a kick down and engine brake conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.