Control method for a dual-clutch transmission
US8930103B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 28, 2014 |
| Grant date | Jan 6, 2015 |
| Priority date | — |
| Expiry date | Feb 28, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2306/18
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method for controlling a drivetrain of a motor vehicle. The vehicle comprises a drive engine and a dual-clutch transmission. The dual-clutch transmission comprises a first friction clutch and a second friction clutch together with a first transmission unit and a second transmission unit, in order to establish a first power transmission branch and a second power transmission branch. The dual-clutch transmission comprising a clutch actuator device for actuating the friction clutches and a gearshift actuator device for engaging and disengaging gears of the dual-clutch transmission. The method assuming that the motor vehicle is being driven in a high original gear and comprising the following steps: derivation of a first shift signal from an actuation of a control element by the driver; calculation of a target gear, which is lower than the original gear and which corresponds to the first shift signal; selection of an intermediate gear between the original gear and the target gear, opening of the friction clutch corresponding to the original gear and closing of the friction clutch corresponding to the intermediate gear, in order to transmit drive power via the power transmission branc…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.