Abstract
ABSTRACTThe increased level of air pollution has caused the automobile industry to investigate alternate greener fuels to make vehicles more environmentally friendly. This study focuses on the performance, emission, and lubrication oil deterioration of 125cc motorbike engines, operated using petrol and LPG. Performance tests were conducted for a constant load using a water brake absorber using both fuels with fresh ((L.O.)F) and deteriorated lubrication oil ((L.O.)Det). Lubrication oil was deteriorated by running motorbike for both fuels. Emission testing was performed by applying three different loads and five different representative speeds. Moreover, NOx, HC, CO, and CO2 emissions levels were obtained using exhaust gas analyzer. For both fuels with (L.O.)F and (L.O.)Det, emission data was fitted to Weibull distribution and ascertained for 95% confidence interval for means. Flash point, ash, water content, total acid number (TAN), kinematic viscosity, and viscosity index tests were performed for analyzing both (L.O.)F and (L.O.)Det. Brake power, torque, and maximum speed of LPG fueled motorbike lowered by 17.4%, 10%, and 6.9% as compared to petrol using (L.O.)F, and 21%, 10.6%, and 7.7% using (L.O.)Det respectively. The average specific NOx decreased by 11.5% for LPG. The lubrication oil TAN increased by 65.2% and 21.7% for petrol and LPG respectively.
Published Version
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