Correlation Between Clutch Hydraulic Release Pressure Pulsation and Pedal Vibration

This work presents some results of a research on the vibrations of clutch pedal, that is underway in Renault Automobiles. A brief summary of the types of the related NVH phenomena and available literature is presented as well. Some measurements in a vehicle equipped with a 4 cylinders Diesel engine, dual mass flywheel, and a hydraulic release bearing clutch command, were carried out. The correlation between the hydraulic pressure and clutch pedal vibrations was determined and analyzed, and some conclusions drawn.