Patent ID: 6024674
Filing Date: 2000-02-15
Classification: B60W,F16D,F16H,Y10T

Abstract:
A system for controlling a frictional engaging clutch installed in a transmission which transmits output torque generated by an internal combustion engine mounted on a vehicle to wheels of the vehicle, including:judder discriminating means for discriminating whether a vibration which has occurred on the vehicle is a judder; andjudder-decreasing control means for acting to decrease the judder when the judder discriminating means discriminates that the vibration which has occurred on the vehicle is a judder;wherein the improvement comprising:the judder discriminating means includes:frictional engaging clutch rotational speed fluctuation detecting means for detecting an output rotational speed fluctuation of the frictional engaging clutch;first filter means for transmitting a first range of frequency component of the detected output rotational speed fluctuation of the frictional engaging clutch;first threshold setting means for setting a first threshold;first counting means for comparing the first range of frequency component (filtered) with the first threshold to count the number of times (NTEX) at which the first range of frequency component exceeds the first threshold; andjudder determining means for determining that the vibration which has occurred on the vehicle is a judder when the counted number exceeds a reference value.