Evaluation of gear power losses from experimental test data and analytical methods

Abstract

This paper deals with Matlab-Simulink mathematical model of power transmission systems with toothed gear. If this model is to be used in dynamic analysis, design and technical diagnostics, then its parameters must be verified. One of these parameters is power loss coefficient which has influence on gear efficiency. Power losses in gears come mainly from the friction between the teeth and lubrication process during the meshing. Evaluation of gear power losses has a significant influence on the agreement between numerical and experimental results obtained from test stand. Power losses due to friction between the teeth, bearing friction and oil splashing have been analyzed in the paper. Gear efficiency values obtained by numerical simulation and experimental tests for different rotational speeds and loads show satisfactory conformity.