Abstract
This study evaluated the performance of a diesel engine operated with waste plastic biodiesel fuel blends. At all engine loads the emissions of carbon monoxide (CO), unburnt hydrocarbons (UHC) and carbon dioxide (CO2) were low compared to conventional petro-diesel (PD), but the emissions of NOX were higher. The brake specific fuel consumption (BSFC) for the blends dropped while the brake thermal efficiency (BTE) continued to increase with load for all blends until intermediate load when it decreased. Compared to PD fuel, CO emissions for blend 95/WPPO5 at all engine speed idling modes were 285 ppm, 298 ppm, 320 ppm, and 388 ppm while PD emissions were 270 ppm, 295 ppm, 315 ppm and 365 ppm respectively. The values for UHC for blend 95/WPPO5 at all engine speed idling modes were 35 ppm, 28 ppm, 22 ppm, and 18 ppm compared to PD fuel with 20 ppm, 25 ppm, 30 ppm, and 40 ppm respectively. The NOx emissions for PD fuel at all engine speed idling modes were 175 ppm, 225 ppm, 300 ppm and 375 ppm compared to blend 95/WPPO5 at 195 ppm, 245 ppm, 335 ppm, and 397 ppm. The BSFC values for blend 95/WPPO5 at all engine idling speed modes were 0.48 g/kW.h, 0.41 g/kW.h, 0.35 g/kW.h and 0.4 g/kW.h compared to PD at 0.45 g/kW.h , 0.39 g/kW.h , 0.33 g/kW.h and 035 g/kW.h respectively.
Published Version
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