Abstract
The performance and emissions of direct injection diesel engine are mainly depending on the crown of the piston head. The shapes on the piston crown increase the turbulence in the combustion chamber. This paper discusses increasing the performance and reducing the emission of diesel engine by adding semi-elliptical shape arc grooves on piston crown; again, it is also increased by using apricot seed oil as biodiesel. In this papers 2, 3 and 5, elliptical shapes are added on piston crown along with biodiesel. Apricot seed oil is used as biodiesel to decrease the HC and NOx emissions. Finally concluded that 3 elliptical groove piston crown with biodiesel has better performance and less emissions.
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