Experimental study of dynamic loading of a vehicle transmission with a combined power unit

The automotive developments of today tend to increase productivity, speed and ecological performance of vehicles. All changes which relate to the increase of cardinality parameters of the internal combustion engine (ICE) together with the use of hybrid drives and powertrain design improvement inevitably lead to the increase of intensity and vibration in wheeled vehicles. Analytical calculations show and experimental studies confirm the presence of alternating loads in the elements of wheeled machines. The number of failures caused by vibration is high in automotive machine building. The elimination of fluctuations in vehicles transmission is an important and urgent problem of modern engineering for the reduction of the cost of machines and additional expenditure on their recovery in the course of operating life. Vibration loading reduction problems of transport vehicles transmission are solved by many domestic and foreign firms. In each case the choice of the means reducing torsional vibrations in the transmission is determined by the specific characteristics of the system and its operating conditions. Experimental evaluation of dynamic loading of the vehicle transmission with a combined power unit (CPU) is conducted as part of the research work. The aim of the study under consideration is the accumulation of experimental data on the vibrational processes in the nodes of a hybrid vehicle drive. The practical value of the work is to evaluate the effectiveness of the proposed torsional vibration damper (TVD). The experimental data can be used to adjust and validate calculation models to determine the dynamic load transmissions of vehicles with CPU. In addition, the article describes the complex of information-measuring apparatus, the succession of preparing and programing of laboratory and road tests for a researched vehicle with a hybrid propulsion system.

vehicle, combined power unit, transmission, two-mass flywheel, experimental study

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