Transmission control system
US7517299B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2006 |
| Grant date | Apr 14, 2009 |
| Priority date | — |
| Expiry date | Sep 20, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/66218
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A transmission TM comprises a metal V-belt mechanism 20, which is provided between an engine ENG and driving wheels DRW and transmits a rotational driving force from the engine ENG toward the driving wheels DRW with a speed change, and a forward/reverse switching mechanism 30, which includes a planetary gear train and switches the rotational direction between for a forward drive and for a reverse drive and transmits the rotational driving force received from the engine ENG to the metal V-belt mechanism 20. An engine control unit 60 for the transmission TM, while the rotational direction is set for a reverse drive, changes the ratio of the metal V-belt mechanism 20 in the direction where the vehicle speed increases by a predetermined ratio and controls the torque input from the engine ENG such that the torque being transmitted to the driving wheels DRW achieves approximately the same magnitude as that achieved while the rotational direction is set for a forward drive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.