Open AccessUse of phased supply of hydrogen additives for improvement of the ecological characteristics of the Wankel rotary engine
Author(s) -
E. A. Fedyanov,
Y V Levin,
E M Itkis,
К. В. Приходьков
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1155/1/012077
Subject(s) - combustion , hydrogen , rotary engine , fuel efficiency , brake specific fuel consumption , gasoline , hydrogen fuel enhancement , internal combustion engine , carbon monoxide , automotive engineering , hydrogen vehicle , reciprocating motion , environmental science , hydrogen fuel , materials science , waste management , chemistry , engineering , mechanical engineering , organic chemistry , composite material , catalysis , gas compressor
The Wankel rotary engine, designed according to Wankel’s scheme, is more adaptable for running on hydrogen fuels than traditional reciprocating engines, possessing lower pre-ignition and backfire probability. Hydrogen additive to main air-fuel mixture helps to decrease incompleteness of combustion in the vicinity of rear rotor apex. Experimental data for Wankel rotary engine VAZ-311 performance on hydrogen blends with hydrocarbon fuel is presented. Researches are performed on partial loads, where hydrogen mass fraction additions to the fuel mixture didn’t exceed 5%. It is shown that for partial loads (20% of full load) and engine speed n = 2000 min −1 5% hydrogen addition by mass yields to 4.2% decrease of brake specific fuel consumption (hydrogen consumption was converted to gasoline consumption computed proportionally to their combustion heats ratio). Amount of unburned hydrocarbons for the conditions mentioned reduces in a factor of 2 and emission of carbon monoxide reduces to 40%.