Influence of butanol addition on the CI engine performance fuelled with treated waste engine oil

Abstract

Treated waste engine oil can be utilized as compression ignition fuel. An experimental study has been performed to overcome the limitations in fueling treated waste engine oil into diesel engine as fuel, by the addition of butanol, modification of nozzle opening pressure, fuel injection timing, and intake air temperature. Butanol (0-50% by volume) was blended with treated waste engine oil and tested for properties and the found properties were compared to diesel. Butanol used was produced from vegetable waste by recycling. This blend was tested in a direct injection compression ignition engine for various load conditions by modifying the engine operating parameters such as nozzle opening pressure, fuel injection timing, and intake air temperature for performance. The optimal level of these parameters (210 bar of nozzle opening pressure, 29ᵒ before the top dead center of fuel injection timing, and 100ᵒ C of intake air temperature) to fuel 50% treated waste engine oil and 50% butanol and were obtained by using the L9 orthogonal array and the Taguchi method. The brake thermal efficiency, ignition delay, emissions of smoke, and oxides of nitrogen produced by this blend was found to be closer to that of diesel at rated power condition. .