Study on Mutual Work of a Diesel Engine with a Hydro-Mechanical Transmission

Digital Object Identifier 10.32754/JMT.2018.2.10 57 Abstract—The purpose of this paper is to present some aspects of hydro-mechanical transmissions and their link with combustion engine. In order to establish the static characteristics of torque converter, there are used graphical representations of turbine torque, impeller torque, efficiency and transfer ratio. Static characteristics of hydro-mechanical transmissions are presented using torque and power charts measured at secondary gear axle and also using energy efficiency and rate of power turned into-heat charts. Using external characteristic values of engine torque and engine power charts, there are presented static characteristics resulted from the correlation of combustion engine and hydromechanical transmission. Static characteristics obtained by mathematical expressions are used to study vehicle dynamics within this paper. Therefore, using Matlab and Simulink, general dynamics performances of a system are established. Other purpose of this paper is to establish specific performances of the diesel combustion engine functioning along with a hydro-mechanical transmission, such as maximum speed and maximum slope on different types of frequently used roads.