INVESTIGATIONS ON POLLUTANTS FROM CERAMIC COATED DIESEL ENGINE WITH CARBURETED BUTANOL AND PLASTIC OIL

In the context depletion of fossil fuels, ever increases of fuel prices in International market causing economic burden on government of India and ever increases of pollution levels with fossil fuels, the search for alternative fuels has become pertinent. Alcohols and vegetables oils are important substitutes for diesel fuel as they renewable in nature. However, the drawbacks of vegetables oils (high viscosity and low volatility) and alcohols (low energy content and cetane number) call for semi-adiabatic diesel engine (SADE). The high energy content of plastic oil and high volatility of butanol can be taken together in order to have minimum pollution levels. Investigations were carried out to control pollutants of particulate matter measured by AVL Smoke meter, nitrogen oxide (NOx) levels determined with Gas Analyzer at various values of brake mean effective pressure of the engine with single cylinder, four-stroke, water cooled, 3.68 kW, Kirlosker diesel engine with ceramic coated cylinder head with varied injection timing. Carbon monoxide (CO) and un-burnt hydro carbon (UBHC) were determined by gas analyzer at full load operation of the engine. Butanol was carbureted into the engine through variable jet carburetor installed at the inlet manifold of the engine at different percentages of crude plastic oil at full load on mass basis. Crude plastic oil was injected through injector in conventional manner. The semi adiabatic diesel engine with carbureted butanol reduced exhaust emissions in comparison with diesel operation on conventional engine.