Experimental Studies on CC Engine of Characteristics Performance and Emission using Three Different Biodiesel

Abstract

The experimental work consists of three phases. In the first phase of the work, the engine was operated using different blends of three types of methyl esters, namely Mango Seed Methyl Ester(MSME), Fish oil Methyl Ester(FME) and Pinnai oil Methyl Ester(PME) (Group I). In the second phase of the work, the same engine was operated with different blends of above methyl esters with 10% concentration of fuel additive of 1, 4 dioxane (Group II).Optimization of the additive concentration was done with the different percentage of 1,4 dioxane. In the final phase of the work, the engine components like piston crown, valves and cylinder head are coated with zirconium dioxide of 150 micron thickness, by plasma spray coating (PSC) techniques. For this purpose, cylinder head, valves and piston of the engine were coated with partially stabilized zirconia (PSZ). Then, the engine was tested for different loads by group1 fuels, at low heat rejection (LHR) engine condition (Group III). In this research work, three different methyl esters were employed. The methyl esters are blended to diesel at 25%, 50%, and 75% per liter, by volume basis and used as fuel in the four stroke single cylinder CI engine. The test involves varying loads from no load to maximum load, at rated speed of 1500 rpm and at standard injection timing (23° bTDC). The experimental investigation, were attempted for same blends ratio by adding oxygenated additive of 10% of 1,4 Dioxane to all the three methyl esters to identify the best blend from the three methyl esters based on the performance and emission. Additive percentage was optimized by conducting experiments with fuel of different concentrations of additive (say 4%, 6%, 8%, 10% and 12%). Upto 10% of fuel additive, the performance of the engine was improved, beyond that there was no appreciable improvement. Hence 10% additive was taken as optimum value. In the same experimental set up, the PSZ coated engine was operated with the different blends of three methyl esters.