Experimental Investigation of Addition of Treated Waste Engine Oil into Diesel Ethanol Blends on the Performance in Compression Ignition Engine

Diesel ethanol blends can be used as a fuel for CI engine to replace or reduce the usage of diesel as a fuel for compression ignition engine. This work is to investigate the addition of treated waste engine oil into diesel ethanol blends. The novelty in this work is the utilization of renewable fuel ethanol and treated waste engine oil which is a waste product from internal combustion engines. Experimentation was conducted in two stages: viz., first stage was treating the waste engine oil and followed by blending and testing the performance of diesel ethanol blends with various proportions of treated waste engine oil. Treatment of waste engine oil includes initial filtration, acid treatment by acetic acid, clay contraction by fullers` earth and neutralization cum decoloration along with final filtration of waste engine oil. The addition of treated waste engine oil into diesel ethanol blends improved the essential properties of blends such as density, kinematic viscosity, energy content and cetane number significantly. The results indicated that the blend containing 10% of treated waste engine oil produced significant increase in brake thermal efficiency, emissions of oxides of nitrogen, a decrease in carbon monoxide, smoke and hydrocarbon emissions when fueled in diesel engine. This study enhances 25% reduction of diesel consumption for fueling diesel engine (which is a fossil fuel).