INCREASING THE EFFICIENCY OF INTERNAL COMBUSTION ENGINE FOR LOW-TONAGE SHIPS BY ADDING SYNTHESIS GAS

Abstract

When using alternative fuels in ICE, it is first of all necessary to take into account their physicochemical properties, which introduce significant adjustments to the way the work process is organized and significantly affect the effective and environmental performance of the engine and the entire power plant as a whole. Presented are the results of studies of the engine operation 4 × 10,16 / 9,1 with spark ignition and external mixture formation when working on ethanol with synthesis gas additives. Obtained indicator charts and diagrams of gas temperature changes in the cylinder of the engine when working on ethanol and with the addition of synthesis gas. It is established that an increase in the indicator efficiency of a spark ignition engine by 10.5% is achieved with a mass addition of synthesis gas in ethanol of 1...10% due to an increase in the excess air factor α to 0.98...1.2 when combustion of a mixture of ethanol and synthesis gas (for ethanol - 0.8...0.95), which leads to a reduction in heat losses, a decrease in the temperature of the exhaust gases and a reduction in emissions of toxic substances, while an increase in the amount of the synthesis gas additive leads to increase in the indicator efficiency of the engine. It is proved that the addition of synthesis gas to ethanol reduces the total mixture burning time by 45% and improves the environmental performance of the engine.