Improving the dynamic properties of the vehicle by installing diesel engines during modernization

Abstract

This article examines the possibilities of improving the dynamic properties of a weapon vehicle by installing diesel engines during modernization. It proposes a number of practical measures to achieve this goal, such as replacing a gasoline engine with a diesel engine.
The article conducts a comparative analysis of the traction and dynamic characteristics of the basic gasoline power unit and the diesel power unit installed after modernization on the example of APCS 70. The necessity of modernization by replacing gasoline engines with diesel units is substantiated by means of a comparative traction and dynamic calculation and economic indicators of power units. A comparative analysis of fuel consumption is carried out and the power of the power units is compared. The disadvantages of using gasoline power units are analyzed. According to the results of the calculations, the optimal ratio of parameters that determine the dynamic properties of the vehicle of the weapon is achieved.
For the calculation of the main indicators of traction and speed properties of the prototype, the numerical values of the design parameters of the APCS 70 product, which are given in the reference literature, are used.
The modernization discussed in this article involves further refinement of the APCS 70's power plant compartment, which is located in the aft part of the hull. It contains two ZMZ 4905 power units assembled with clutches and gearboxes mounted on a common frame. The gasoline power units are replaced with clutch assemblies and 4-speed transmissions. Diesel power units are assembled with clutches, equipped with 5-speed gearboxes and are installed with minor modifications to the standard subframe on which the units are mounted. In turn, the replacement of the power units entails further modifications to the cooling system, fuel supply, exhaust system, engine heating system, as well as part of the electrical equipment of the power units. The transfer case and subsequent transmission of the product remain unchanged.
The research provides valuable information for military equipment specialists and engineers interested in improving the performance of combat vehicles.