Patent ID: 8515630
Filing Date: 2013-08-20
Classification: F16H

Abstract:
1. A method of determining an output speed (N_AB) of a manual transmission of a motor vehicle for controlling a gear ratio shifting operation in the manual transmission, the output speed (N_AB) being calculated during a period of the shifting operation in which a current gear is disengaged and a new gear has not been engaged, and the calculated output speed (N_AB) is utilized for controlling adjustment of either a speed of a transmission input shaft (N_EG) or another transmission shaft that is drivingly coupled to the transmission input shaft (N_EG) before a transmission output, to the speed of the transmission output shaft, the output speed (N_AB) of the manual transmission is determined during the shifting operation by the method comprising the method steps of: measuring a speed value that at least indirectly indicates a vehicle speed that is too inaccurate to be used directly for controlling the shifting operation; determining a correction value (F correcting the speed value that at least indirectly indicates the vehicle speed by the previously determined correction value (F