Abstract
This experimental work explains and compares the effect of preheating in Premixed Charge Compression Ignition technique(PCCI) by using three different fuels such as diesel, citronella oil – diesel blend (B20), cedarwood oil – diesel blend (B20). This experiment have been carried in a single cylinder diesel engine by incorporating a premixing chamber with port fuel injector in the intake port, and placing the preheater before to prechamber near to the surge tank in the intake manifold, the injector , preheater is controlled through ardino micro controller Experiments results showed that there is an increase in brake thermal efficiency with citronella oil – diesel blend (B20), cedarwood oil – diesel blend (B20), and also there is a simultaneous decrease in hydrocarbon (HC) and carbon monoxide (CO) emissions due the preheating effect. The performance results indicated that there is a drop in volumetric efficiency due do preheating effect of the premixed fuels, penalting in increased fuel consumption. NOx is lower for diesel fuel since it contains lower oxygen molecule than citronella, cedarwood diesel blends. So Neat diesel has the lower emission characteristics than the other premixed fuels in PCCI technique. And the effect of fuel distribution inside the premixing chamber is shown by using ANSYS-FLUENT.
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