Method for determining and/or offsetting crosstalk behaviour of a dual clutch transmission

Abstract

The invention relates to a method for determining the crosstalk behaviour of a hydrostatic dual clutch transmission of a motor vehicle which has two partial transmission clutches (4, 5) that are each arranged between a drive unit (2) and a partial transmission (8, 9), wherein the two partial transmission clutches (4, 5) are each actuated independently of one another via a partial transmission clutch actuator (6, 7), wherein during the actuation, the actuation pressure (p4, p5) from the partial transmission clutch actuator (6, 7) acting on the partial transmission clutch (4, 5) and a clutch actuation path travelled by the partial transmission clutch (4, 5) are determined, from which a crosstalk factor (Deltax4, Deltax5) is determined for each partial transmission clutch (4, 5). In a method for determining the crosstalk behaviour of a hydrostatic dual clutch transmission, wherein said behaviour can be determined both at the belt end and during the driving operation in the motor vehicle, each crosstalk factor (Deltax4, Deltax5) is derived from a characteristic map (K4, K5) which is generated depending on the actuation pressure (p4, p5) of both partial transmission clutches (4, 5).

Description

technical field

[0001] The invention relates to a method for determining the crosstalk behavior of a hydrostatic dual clutch transmission of a motor vehicle, said dual clutch transmission having two subtransmission clutches which are respectively arranged between a drive unit and a respective subtransmission during which the two subtransmission clutches are actuated independently of each other via a subtransmission clutch actuator, wherein during actuation the actuating pressure applied by the subtransmission clutch actuator to the subtransmission clutch and the clutches passed by the subtransmission clutch are determined An actuation displacement from which a crosstalk variable is determined for each subtransmission clutch. Background technique

[0002] Within the scope of this document, a hydrostatic clutch system is understood to mean a dual clutch transmission in which, in particular, a hydrostatically operated actuator HCA is provided for actuating two automatic frictio...

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