Storozhev I.I., Romanov S.V., Alushkin T.E., Palyanov A.T.

Theoretical studies of natural gas vaporization of an air-methane mixture in a diesel engine cylinder

This article presents theoretical studies of the vaporization of natural gas of an air-methane mixture in a diesel engine cylinder. These studies were conducted in order to find a rational volume of methane supplied to the cylinder of a diesel engine. Having carried out a thermal calculation of the working processes of the gas engine, we obtained the size of the gas droplet supplied to the engine cylinder, which should have a size of no more than 0.405 mm. Having evaluated the experimental studies conducted in this area, the dependence of the nozzle diameter of the nozzle and the diameter of the gas droplet was revealed, it was determined that with a pressure drop on the gas nozzle equal to 0.2 MPa, the diameter of the gas droplet practically coincides with the diameter of the nozzle. Based on this, the diameter of the nozzle of the gas nozzle sprayer is not more than 0.35...0.4 mm. The conclusion of this article is that it is possible to determine the optimal volume of gas supplied and assess the real picture of the processes taking place in the cylinder of a diesel engine only.

Keywords: INTERNAL COMBUSTION ENGINE, WORKING FLUID, FUEL, VAPORIZATION, GAS, COMBUSTION