DEVICE AND METHOD FOR ANALYZING IDLING NOISE FOR TRANSMISSION

摘要

PROBLEM TO BE SOLVED: To provide a device for analyzing idling noise for a transmission, capable of accurately analyzing the characteristic of idling noise in relation to oil temperature and furthermore setting the various conditions of the transmission appropriately on the basis of the analyzed result. SOLUTION: The angular velocity d/dtθC/S of a countershaft influenced by both gear mesh parts (the main factor of idling noise) on the input shaft side and main shaft side is obtained every oil temperature, and the angular velocity d/dtθC/S is differentiated to obtain angular acceleration d2/dt2θC/S. The RMS value of the angular acceleration d2/dt2θC/S is logarithmically converted and made into a graph every oil temperature in relation to idling noise.