Method of reducing output torque deficits during launch of a continuously variable transmission
US11143297B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2017 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Oct 7, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2059/704
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
According to the present invention, there is provided a method of reducing output torque deficits during the launch of a vehicle having a continuously variable transmission, wherein the variator has an input connected to a prime mover and an output. The method comprises the steps of determining a rate of change of ratio in the transmission, and predicting a required motor speed ratio rate of change value of the variator on the basis of: (i) the determined rate of change of ratio in the transmission, and (ii) the configuration of the transmission. The speed of the variator output is adjusted so as to achieve the required motor speed ratio rate of change value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.