Method for controlling a dual-clutch transmission
US8398527B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 3, 2012 |
| Grant date | Mar 19, 2013 |
| Priority date | — |
| Expiry date | May 3, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2500/50293
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method of controlling a dual-clutch transmission in a motor vehicle, including two partial drivetrains, each having a plurality of gears, which each can be connected to a crankshaft of an internal combustion engine by a friction clutch, the method having the following steps: the first friction clutch transmits a torque to the first partial drivetrain assigned to it; the second friction clutch transmits at most a negligible torque to the second partial drivetrain; and the two partial drivetrains have a common differential, where when there are changes in torque and the amount of torque to be transmitted is low, and there is downshifting into a gear with a high transmission ratio in the first partial drivetrain, downshifting occurs into a gear with a low transmission ratio in the second partial drivetrain, and preliminary torque is applied to the differential by this gear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.