Performance study of single cylinder engine dual fuel (diesel + LPG)

Abstract

Diesel engines efficient and economical large, but at is large in size and non friendly environmental. LPG is available at a lower price than other fuels and environmentally friendly. One of the important research topics that have been updated is the use of LPG in diesel engines. The LPG has a high heat value, and its gaseous state makes mixing with air simple and has perfect redound of combustion to increase the power output also the LPG helps to fully consume the fuel and thus reduces emission and helps to harvest the total energy found in the fuel. It was designed a new Electronic Control Unit (ECU) and used of the LPG injection timing and duration while opening the air intake valve into the combustion chamber and a magnetic sensor is installed on top of a single cylinder diesel engine with air-cooled. The test engine was run in four fuel mode the start was used is D-100, after that the fuel was used LPG-25, LPG-50 and LPG-100. The test was under loads 0%, 25%, 50%, 75% and 100% at different speeds 1000, 1500 and 2000 rpm. At the engine speeds 1000, 1500, 2000 rpm compared with D-100 fuel, the thermal efficiency was better at using LPG-50 fuel were increased about by (0.99%, 0.92%, 1.29%) and bsfc were decreased as (9.81%, 9.4% and 9.68%) respectively. A decrease in emissions, NOx, HC, CO and CO2 was observed in all operating modes with LPG and the best emission reduction situation is LPG -50.