Open AccessBIOFUEL AND HYDROGEN INFLUENCE FOR OPERATION PARAMETERS OF SPARK IGNITION ENGINE / BIODEGALŲ IR VANDENILIO ĮTAKA KIBIRKŠTINIO UŽDEGIMO VARIKLIO VEIKIMO RODIKLIAMS
Author(s) -
Martynas Damaševičius,
Alfredas Rimkus,
Mindaugas Melaika,
Jonas Matijošius
Publication year - 2016
Publication title -
mokslas - lietuvos ateitis
Language(s) - English
Resource type - Journals
eISSN - 2029-2341
pISSN - 2029-2252
DOI - 10.3846/mla.2016.964
Subject(s) - combustion , spark ignition engine , gasoline , hydrogen , carbon monoxide , chemistry , hydrogen fuel enhancement , engine efficiency , petrol engine , environmental science , materials science , organic chemistry , catalysis
Paper presents research of efficient and ecological parameters of gasoline engine working with biobuthanol (10% and 20% by volume) and addi-tionaly supplying oxygen and hydrogen (HHO) gas mixture (3.6 l/min), which was obtained from from water by electrolysis. Biobuthanol addition decreases rate of heat release, the combustion temperature and pressure are lower, which has an influence on lower nitrous oxide (NOx) emission in exhaust gases. However, biobuthanol increases carbon monoxide (CO) concentration. Biobuthanol fuel has a simplier molecular structure, therefore the concentration of HC in the exhaust gas is decreasing. Due to lower heating value of biobuthanol fuel and slower combustion process, the engine efficiency decreases and specific fuel consumptions increase. The change of engine energetical indicators due to biobuthanol, can be compensated with advanced ignition angle. Using experimental investigation, it was determined, that negative biobuthanol influence for the combustion process and engine efficient inicators can be compensated also by additional supplied HHO gas, in which the hydrogen element iprove fuel mixture com-bustion. Fuel combustion process analysis was carried out using AVL BOOST software. Experimental research and combustion process numerical simulation showed that using balanced biobuthanol and hydrogen addition, optimal efficient and ecological parameters could be achieved, when engine is working for petrol fuel typical optimal spark timing