Method for adapting a characteristic curve of clutches in a partial double-clutch transmission of a motor vehicle

摘要

A method of adapting the characteristic curve of clutches in a partial dual-clutch transmission of a vehicle, for example a utility vehicle, having a first partial transmission in the form of a dual-clutch transmission (DKG) having a dual clutch (DK) that includes a first clutch (K1) and a second clutch (K2), which can be functionally connected to a drive engine (M), and a second partial transmission in the form of a main transmission (HG) which shifts with traction force interruption and which is arranged downstream from the dual-clutch transmission (DKG) in a drive-train. To achieve reliable and precise clutch control and a consistently high level of shifting comfort, the characteristic curve adaptation of the first and the second clutches (K1, K2) is carried out with the assistance of a pre-loading of the first and the second clutches (K1, K2), while the main transmission (HG) is in a neutral position.

主权项

1. A method of providing a characteristic curve adaptation of clutches in a partial dual-clutch transmission of a vehicle, having a first partial transmission designed as a dual-clutch transmission section (DKG) with a dual clutch (DK) comprising a first clutch (K1) and a second clutch (K2) which can be functionally connected to a drive engine (M),
the first clutch is engagable so as to drive a common countershaft via a first input constant and the second clutch is engagable so as to drive the common countershaft via a second input constant, a second partial transmission is designed as a main transmission (HG), the main transmission is connected downstream from the dual-clutch transmission section (DKG) such that traction force, which passes through the first clutch and the second clutch from an output side of the dual-clutch transmission section to an input side of the main transmission, is only transmittable therebetween via the common countershaft, and the main transmission shifts with traction force interruption, the method comprising the step of:
shifting the main transmission into neutral to interrupt a flow of the traction force from the drive engine and the dual-clutch transmission section, via the common countershaft, to an output shaft of the main transmission;carrying out the characteristic curve adaptation of the first clutch (K1) and the second clutch (K2) with a control unit of the vehicle by pre-loading the first clutch (K1) and the second clutch (K2).