The Influence of Regulating Parameters of Dual Fuel Compression Ignition Engine Fuelled with LPG on its Maximum Torque, Overall Efficiency and Emission

In the Department of IC Engines and Automobiles in Radom Technical University, CI engine has been modified to dual fuelling. As a main fuel liquid petroleum gas (LPG) is used. The diesel fuel is used to initiate combustion. Some investigation of standard diesel engine and modified one has been carried out.

Tests of the engines consisted of preparation of load characteristics for some different ignition diesel fuel doses and for different injection timing of ignition dose. The emission of exhaust gases has been measured during examination of the engines. It was noticed that the volume of ignition diesel oil dose and injection timing strongly influences overall efficiency, maximum engine torque and emissions.

The investigation results obtained for modified and standard engine has been compared. These results let to optimised two regulation parameters - the volume of diesel oil dose and its injection timing from the point of view of maximum torque, overall efficiency and emissions.