Abstract
The indicator diagram of the D-240 diesel engine was built taking into account the data obtained from the calculation of the working process. The construction of the indicator chart was carried out analytically using the Microsoft Excel application package. As a result of mathematical modeling, it was found that at the nominal operating mode of the D-240 diesel engine, the introduction of 30% of water from the cycle supply of diesel fuel into the fuel-air mixture makes it possible to increase the effective power from 55.15 kW to 65.84 kW. The reduction in the specific effective consumption of diesel fuel is 45 gr/(kW/h). The thermal efficiency of the engine under study is 35.57%.
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