Method for controlling shifting of a partial double clutch transmission

摘要

A method of controlling shifting in a transmission having a first partial transmission, designed as a dual-clutch transmission, which comprises first and second clutches by which the dual-clutch transmission can be functionally connected to a turbocharged internal combustion engine. A second partial transmission is arranged in the drive-train, downstream of the dual-clutch transmission, which is in the form of a main transmission that shifts with traction force interruption. To at least reduce traction power loss of the turbocharged engine after a traction shift, during a traction shift involving a gearshift in the main transmission, the clutches are at least partially engaged so as to be braced against one another and produce a torque that acts in opposition to the drive engine by virtue of which, during the traction shift, the supercharge pressure of the drive engine is largely maintained, or at least built up shortly after the traction shift.

主权项

1. A method of controlling shifting in a partial dual-clutch transmission, having a first partial transmission designed as a dual-clutch transmission (DKG) with a dual clutch (DK) comprising a first clutch (K1) and a second clutch (K2) by which the dual-clutch transmission (DKG) is functionally connectable to a drive engine (M) designed as turbocharged internal combustion engine, and with a second partial transmission arranged in a drive-train, downstream from the dual-clutch transmission (DKG), and designed as a main transmission (HG) that shifts with traction force interruption, the method comprising the steps of:
at least partially engaging the first clutch (K1) and the second clutch (K2) during a traction shift involving a gearshift in the main transmission (HG), so as to brace the first clutch (K1) and the second clutch (K2) against one another and produce a bracing torque acting in opposition to the drive engine (M); and either maintaining or building up a supercharge pressure of the drive engine during the traction shift with the torque acting in opposition to the drive engine, within a predetermined time after the traction shift.