COMPARISON OF VARIOUS DIFFUSERS AT EXHAUST MANIFOLD IN CI ENGINE FUELED WITH WPO BLENDS USING TAGUCHI’S APPROACH

Abstract

Fossil fuel is running out of the quantity attributable to the increasing worldwide demand of fossil fuel and
quantity of fuel fix. To overcome this situation, Waste plastic oil or a blend of waste plastic oil could be used in place of
fossil fuel. Waste plastic oil is produced by pyrolysis process. Another alternate bio-fuel is also available in the market
like palm seed oil, Jatropha, Neem etc. Taguchi method is used to reduce the experiment run and it helps to get best
result in short time. Experiments have been performed according to L27 orthogonal array were take 27 rows and 4
columns at 3 factors with 4 parameters. In the research effect of the diffuser and waste plastic oil blend study and
diffuser attached at the exhaust manifold. Exhaust manifold, variable compression ratio, load and blend have been
selected parameters for improving the performance of the engine. Exhaust manifold has been modified by changing its
draft angle. 100
and 12.50 draft angles of exhaust manifold. Range of the parameters are (16, 17, 18) compression ratio,
(100D0B, 50D50B, 0D100B) Blend, (2, 7, 12) Load. Combinations of all parameters have been taken to analyze Brake
Thermal Efficiency, Specific Fuel Consumption, Fuel Consumption and Mechanical Efficiency.