DISTINCTIVE FEATURES OF OPERATION OF AN INTERNAL COMBUSTION ENGINE RUNNING ON HYDROGEN-CONTAINING FUELS

Experimental investigations have been carried out on an internal combustion engine with hydrogen added to the hydrocarbon fuel, i.e., gasoline. The possibility of improving the energy and environmental indices in the case of hydrogen feed to the engine's air path has been shown. It has been established that increase in the fraction of hydrogen in the fuel mixture causes the operating process of the engine to improve, with the result that the flow rate of gasoline as a function of the H-2 fraction decreases by nearly 70%. Considerable reduction in the content of CO, CO2, and CH ( of approximately 5-60% depending on the amount of the added H-2) is observed. However, adding hydrogen to the fuel-air mixture leads to an increase in the content of nitric oxides in the combustion products because of the growth in the velocity of propagation of the flame and increase in the combustion temperature.