Control device for continuously variable transmission
US9279496B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2013 |
| Grant date | Mar 8, 2016 |
| Priority date | — |
| Expiry date | Apr 1, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2312/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A frictional engagement element (32) that disconnects power between an engine (1) and a drive wheel (7) in a vehicle, and a control unit (11, 12) that controls a transmission ratio of a continuously variable transmission (4) and the frictional engagement element (32), are provided. When the transmission ratio is not a maximum transmission ratio at a vehicle stop when a vehicle speed is 0, the control unit (11, 12) operates the transmission ratio to the maximum transmission ratio while controlling the frictional engagement element (32) into a slip state. Further, at this time, when a road is an upward slope, the control unit (11, 12) sets an engagement pressure of the frictional engagement element (32) and an engine torque according to the road slope, prevents slide-down of the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.