A method for the cyclical adaptation of a characteristic curve for the switching over from the gears in the case of an automatic transmission of a motor vehicle

摘要

A method for the cyclical adaptation of a characteristic curve for the switchover from the one in the other of two according to their gear ratio, adjacent gears of an automatic transmission of a motor vehicle, in which the switching points of the characteristic curve by coordinate values of a characteristic field are determined, in which a of the driving speed dependent parameters by means of a parameter associated with the engine torque, or vice versa is applied, and in which according to a gear shifting strategy, which on the basis of a vehicle-specific and state specific influencing variables in the relationship of settlement of the algorithm and by evaluating the measured actual values of the influencing variables in each calculation cycle determines a correction value, the characteristic curve on the change of the influencing variables as a function of the respective correction value is adapted, characterised in that for each of the two coordinate values (20 - m; 21 - m for m = 16 to 19 in fig. 4) of selected points (16 and 17 or 18 and 19), a correction value (ddkw; dnab) is fixed, and that for the selected switching points (16 and 17 or 18 and..