Dynamic calculation of the driving part of a hydraulic transmission system taking into account the damping properties and the influence of the driven part of the transmission

Abstract

This article presents an analysis of methods for calculating the protective properties of a torque converter. Specifically, it analyzes existing methods for accounting for the torque converter's influence on a dynamic system and selects optimal dynamic properties for a hydraulic transmission. A detailed dynamic calculation of the driving portion of the system with a hydraulic transmission is presented, taking into account the latter's damping properties and the influence of the driven portion of the transmission. The paper presents the results of calculating a hydromechanical transmission with a torque converter with an active diameter of 340 and presents the characteristics of the reduced coefficient (and relative moment of inertia) depending on the torque converter operating mode, the pump wheel speed, and the forced vibration frequency. The calculation demonstrated the need to include a torsional vibration damper in the hydraulic transmission system and allowed for the determination of its optimal parameters.