Open AccessAdjustment parameters of an internal combustion engine working with methane
Author(s) -
Radostin Dimitrov,
Krasimir Bogdanov,
Radosław Wróbel,
Lmv Serrano,
Veselin Mihaylov
Publication year - 2019
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/664/1/012020
Subject(s) - gasoline , methane , petrol engine , ignition system , automotive engineering , homogeneous charge compression ignition , cylinder , ignition timing , combustion , internal combustion engine , compression ratio , environmental science , integrated engine pressure ratio , combustion chamber , mechanical engineering , engineering , engine coolant temperature sensor , thermodynamics , chemistry , waste management , physics , organic chemistry
The paper presents a study of the variation of ignition advance when the engine works with methane and a comparison with values when the engine runs on gasoline. It is known that methane has a lower burning velocity than gasoline, and therefore, to obtain a maximal efficiency from the working process (the maximum value of cylinder pressure p z should be 7-15 degrees after TDC), ignition advance should be increased, as for different operating regimes this angle should be increased with different values. A gasoline engine has been studied and were measured and analysed the ignition advance at work with gasoline and methane, with optimal air-fuel ratio ( α ) for both fuels. Three-dimensional graphics of ignition advance variation across the rpm and load range were made. In conclusion, on the basis of the experiments, a table is produced, which presents the values of coefficients for change of base parameters of ignition advance for all engine operating modes, in dependence on rpm and load of the engine.