Comparative Performance Analysis of Compression Ignition Engine using Biodiesel and LPG as Additive

Sajjad Bhangwar, A.M. Liquat, M. Tarique Bhatti, Asif Ali Laghari, Ishfaque Ali Qazi, Manthar Ali Khoso


Increase urbanization of the world leads to increase in fuel demand. Crude oil based fuel such as diesel fuel; petrol and natural gas are the main fuels. Moreover natural resource reservoirs are in specific regions of the world. Many countries of the world along with Pakistan are facing shortage of the petroleum products. Therefore alternative energy resource must be explored in order to cope with the fuel demand.  In this research work, a 60 hours endurance test has been carried out on horizontal type single cylinder diesel engine. During endurance test, three fuel   samples such as D100 (%diesel as a baseline), B25 (waste cooking oil biodiesel 25% and 75% diesel fuel) and B25+LPG (liquefied petroleum gas and waste cooking oil biodiesel) respectively have been taken to determine the engine performance and noise emission level. Engine performance and noise emission level were taken at constant rpm of 1300 with variable loads from 0.0(no load) to 1.6kg-m at an interval of 0.2kg-m. however analysis of results show that the brake specific fuel Consumption (BSFC) of B25+LPG decrease with increasing the brake power and the brake thermal efficiency increase as increasing the brake power. However, engine noise emission level from three directions such as front back and left show lower noise emission in case of biodiesel and LPG blended as compared to diesel fuel.


biodiesed; diesel and LPG.

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