Abstract
Exhaustion of crude oil resources, rise in fuel prices and necessity to find less-carbon fuel have encouraged to find an alternative fuel. Biodiesel is characterised by its fuel properties, which may have an adverse effect on performance and emission characteristics of the engine. Thus, it is necessary to trans-esterify the extracted orange oil and make it viable for diesel engine. In the present work, partially stabilised zirconia was used as a thermal barrier coating (TBC) for the combustion chamber components using plasma spray technique. The present study focused on the impact of TBC on performance and emission characteristics of a diesel engine with B1 (20% orange oil methyl ester with 80% diesel) sample and diesel. Increased brake thermal efficiency and reduced brake-specific fuel consumption are observed for B1 in the TBC engine. On comparing with the uncoated engine, the B1 in coated engine exhibited lower carbon monoxide, hydrocarbon, oxides of nitrogen and smoke emissions than diesel.