Substantiation of the coefficients of joint operation of a diesel engine and hydromechanical transmission of a wheeled skidder

Abstract

Numerous studies in various timber industry regions of the Russian Federation and climatic conditions have made it possible to formulate a scientific position, which states that when skidding a pack of wood in various soil-soil and climatic conditions, the engine load coefficients in terms of speed (Ks), torque (Kt) and power (KN) are quite stable. The stability of the values of the coefficients KЗ, Kn, KЗ when skidding a pack of wood in a specific gear in various production conditions is taken as the basis for predicting operational, load and design modes and in creating a theory of operational efficiency of skidders. A method for determining the coefficients of joint operation of the engine with a hydromechanical transmission is proposed, the values of which are the basis for predicting the operating conditions and operational efficiency of wheeled skidders. When developing new or improving serial skidders, it is necessary to have an idea of the influence of parameters and technical solutions used in mechanisms, systems and assemblies on the operating modes of the machine, which determine the load of structural elements, and, consequently, its reliability and technical and operational indicators, including those affecting the operational efficiency of work.