C. I Engine Using Plastic Pyrolysis Oil For Low Nox Emissions Using Taguchi Method

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Parametric study and Optimization of C.I Engine Using Plastic Pyrolysis Oil for low NOx emissions Using Taguchi Method
Abstract: Fossil fuel shortage and severe environmental problems have attracted great attention on the exploitation of clean renewable energies. The utilization of lignocellulosic biomass resources will play an increasingly important role in the future. The objective of the study is to optimize the parameters such as plastic pyrolysis oil diesel blend %, injection pressure and applied load of the single cylinder diesel engine through the Taguchi method. This paper investigated the emission characteristics of various blends of plastic pyrolysis oil with diesel on a Single cylinder four stroke diesel engine, and the other effect
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EXPERIMENT SETUP
A single-cylinder, 4-Stroke, water-cooled diesel engine of 5 hp rated power is considered for the experimentation. The engine is coupled to a rope brake dynamometer through a load cell. It is included with a data acquisition system to store the data for the off-line analysis. The schematic layout of the experimental set up is shown in below Figure-3 Figure-3: Experimental Setup of Diesel Engine
A stationary, 5 hp direct injection diesel engine is used to conduct experiments. Its specifications are given in Table 1.The Rope brake dynamometer is attached to a brake drum or flywheel attached to moderate sized engine. A rope is wound around the brake wheel as shown in Figure 3. One end of rope is connected to the spring balance suspended from overhead and other end carries the load. Air suction rate and exhaust airflow rates are measured with the help of an air velocity meter. Automatically increases with increase of speed and vice versa so that steady speed conditions are more easily achieved.
Table 1: Engine Specification
Parameter Details
Engine Single Cylinder High Speed Diesel Engine
Cooling Water cooled
Bore × Stroke 80 mm × 110 mm
Compression ration 16 :
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The optimum setting is determined by choosing the level with the highest S/N ratio. Referring fig.6 and table.3, the response curve for S/N ratio, the highest performance at set P30D70 blend, ,injection pressure 200 bar and engine load 1 kg which is optimum parameter setting for lowest NOx emission.
VIII. Conclusion
The results of the taguchi experiment identifies that Injection pressure 200 bar, blend P30D70 and engine load 1 kg are optimum parameter setting for lowest NOx emission. Engine performance is mostly influenced by engine load and is least influenced by injection pressure.
IX. References

1) C. Roy, B. Labrecque, B. De Caumia, Recycling of scrap tires to oil and carbon black by vacuum pyrolysis. Resource, Conservation and Recycling 4(1990) 203–213.
2) S.Murugan, M.C.Ramaswamy, G.Nagarajan, “The Use of Tire Pyrolysis Oil in Diesel Engines”. Waste Management, Volume 28, Issue 12, December 2008, Pages 2743-2749
3) M.Mani ,C,subash,G.Nagarajan "performance Emission and Combustion Characteristics of a DI Diesel Engine Using Waste Plastic Oil” Applied Thermal Engineering, volume 29, Issue 13, September 2009, Pages

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