Patent ID: 7972244
Filing Date: 2011-07-05
Classification: F16H,Y10T

Abstract:
1. A method for controlling an automatic transmission of a motor vehicle where a gear ratio ( 1 , 2 , 3 , 4 , 5 , 6 ) is shifted, according to operating conditions, by way of at least one pre-determined shifting program ( 0 , Eco, Normal, Sport, Mountain II, Warm-up, Inching) and corresponding specific shifting characteristic curves (HS 45 , RS 43 ) and where, in relation to an actual operating condition of the vehicle, at least one special function (Curve Recognition KE, Rapid Drive Pedal Release FO, Spontaneous Delay Vehicle SVF, Drive Speed Control FGR, Drive Dynamic Control ESP) is activated to prevent a shift from an actual gear ratio to a target gear ratio, as requested by the at least one pre-determined shifting program, within a pre-determined operating range of the vehicle, the method comprising the steps of: preventing a gear ratio shift in the transmission depending on applied specific values, related to actual operating conditions of the vehicle, as represented by a range of a motor speed (n_mot) of a main engine of the vehicle between a lower motor speed (n_mot_min) and an upper motor speed (n_mot_max); and changing the range of the motor speed (n_mot) by multiplying the upper motor speed (n_mot_max) with at least one of the specific values that are dependent on the actual operating conditions of the vehicle.