Control apparatus for continuously variable transmission
US6821228B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2003 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | May 27, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/6616
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control apparatus for a continuously variable transmission for use with a vehicle is provided for permitting a driver to select one from three transmission modes for the continuously variable transmission, and providing an appropriate transmission ratio in accordance with a particular operating condition of a vehicle without causing an insufficient engine torque or over-revolution, particularly when the transmission is switched from a continuously variable transmission mode to a stepped manual transmission mode. The control apparatus comprises an ECU and an MT switch. The ECU executes a continuous automatic transmission mode for continuously setting a transmission ratio of the continuously variable transmission in accordance with a detected operating condition of the vehicle. The ECU also executes a stepped automatic transmission mode for setting the transmission ratio of the continuously variable transmission to one of a plurality of predetermined transmission stages in accordance with the detected operating condition of the vehicle. The CPU further executes a stepped manual transmission mode for setting the transmission ratio to one of a plurality of predetermined transmission …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.