Method of controlling speed reduction ratio for continuously variable speed transmission
US4967610A · kind A · utility
16Cited by
12References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 1988 |
| Grant date | Nov 6, 1990 |
| Priority date | — |
| Expiry date | Oct 19, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2059/186
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method of controlling speed reduction ratio comprises the following steps: determining "EB-REF-engine speed" which is higher than "R-REF-engine speed" when the accelerator opening is substantially closed and the vehicle brake is applied simultaneously, and controlling speed reduction ratio so that the actual engine speed coincides with the EB-REF engine speed. Although the above method also comprises the following steps as a normal ratio control: setting the R-REF engine speed in relation to the accelerator opening, and controlling speed reduction ratio so that the actual engine speed coincides with the R-REF engine speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.