Patent ID: 6374688
Filing Date: 2002-04-23
Classification: F16H,Y10T

Abstract:
A method of controlling a transmission of an engine-driven vehicle having several gears, the vehicle including a service module actuatable by a driver of the vehicle to request a desired gear, the service module being connected to a system for the transmission which automatically switches gears as a result of an actuation of the service module, the method comprising:monitoring a transmission input speed and a transmission output speed; continuously verifying during a gear changing process whether a transmission input speed to be expected at the point of time of completion of the gear changing process, which is determined based at least in part upon the current transmission input speed and the current transmission output speed, lies within an admissible rotational speed range; automatically engaging the gear desired by the driver when the transmission input speed to be expected lies within the admissible rotational speed range; and automatically selecting and engaging a different gear from the gear desired by the driver when the transmission input speed to be expected lies outside the admissible rotational speed range, said different gear being a gear at which the transmission input speed to be expected lies within the admissible rotational speed range.