Performance of Internal Combustion Engine Fueled by Liquefied Petroleum Fuel with Water Addition

Maciej Paczuski , Zdzisław Chłopek , Marcin Marchwiany , Paweł Bukrejewski , Jacek Biedrzycki , Piotr Wójcik

Abstract

An attempt has been made to analyze water addition in various forms to the operating medium of an LPG fueled engine. The advantages of adding water to the operating medium of an engine has been described, both for spark and compression ignition engines powered with LPG fuel, including the impact on the operational parameters and pollutant emission. It is estimated that the addition of water to the operating medium has a beneficial effect on the thermal efficiency of circulation, at the same time contributing to the reduction of carbon monoxide, hydrocarbons and nitrogen oxides emission. The methodology of empirical research on spark ignited engine fueled with LPG with water addition has been presented: testing was carried out under conditions simulating traction engine usage – under the NEDC approval drive test, consisting of an Urban Driving Cycle – UDC and an Extra Urban Driving Cycle – EUDC. The characteristics of the fuel used in the test has been described, including its composition and selected physical and chemical properties. The results of empirical research have been presented, i.e. the fuel consumption and pollutant emission. It was found that the addition of water has an effect on reducing the operational fuel consumption and emission of carbon monoxide, hydrocarbons, nitrogen oxides and carbon dioxide under engine operating conditions corresponding both to urban and extra-urban driving conditions.