Compressor type selection method suitable for supercharged hydrogen internal combustion engines

Abstract

The invention discloses a compressor type selection method suitable for supercharged hydrogen internal combustion engines. Through a given target value and the basic parameters of an engine, the fuel, entering an air cylinder, of the conventional engines is liquid and does not generate partial pressure; the hydrogen internal combustion engines take hydrogen as fuel, and after entering the air cylinder, the gas fuel generates partial pressure and the influences, caused by the partial pressure generated by the gas fuel, on the pressure ratio calculation of the compressor is considered; therefore, according to the method disclosed in the invention, the partial pressure, in the air cylinder, of the hydrogen and the air is calculated to serve as total pressure in the air cylinder, and then the pressure ratio of the compressor is calculated; moreover, a plurality of compressor outlet temperatures are selected in a reasonable range according to experience values at the outlet of the compressor, after obtaining the pressure ratio, a theoretical value of the compressor outlet temperature is obtained through a thermodynamic equation, and the pressure ratio obtained when the selected experience value of the compressor outlet temperature is approximately equal to the thermodynamic equation is taken as the final result, so that the modification of the temperature after the supercharging is realized and more accurate result can be obtained.

Description

technical field [0001] The invention belongs to the technical field of supercharged hydrogen internal combustion engines, and in particular relates to a type selection method for a compressor of a supercharged hydrogen internal combustion engine. Background technique [0002] The increasingly stringent emission regulations and the adverse effects of the greenhouse effect have made clean, sustainable renewable alternative fuels more and more attention. In particular, with the decreasing of fossil fuels, energy issues have been widely concerned. Hydrogen is a clean energy source in the 21st century. The product of its complete combustion is water. There are no pollutants such as CO, HC, and soot produced by traditional petroleum fuels. Its only emissions are nitrogen oxides produced by burning oxygen and nitrogen at high temperatures. things. This makes the hydrogen internal combustion engine, which combines the advantages of new energy and traditional internal combustion en...

AI Technical Summary

Problems solved by technology

However, for a supercharged hydrogen internal combustion engine, since the mixture entering the cylinder contains gaseous hydrogen, this reduces the amount of air entering the cylinder

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