Performance and Emission Analysis of Bio Diesel Fuelled Engine with Selective Catalyst Reduction (SCR)

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Author(s) B. Jothi Thirumal | E. James Gunasekaran | C.G.Saravanan
Pages 205-211
Volume 3
Issue 2
Date February, 2013
Keywords Biodiesel, Catalyst, NOx, Potassium silicate, Sodium chloride, Zinc sulphate, Magnesium sulphate, SCR, MENO


Emission control is one of the biggest challenges in today’s automobiles. The 3-way converter is expensive and can’t work under oxygen rich environment. An attempt has been made to prepare low cost catalyst made from non noble metal for usage in diesel engine after treatment. The present investigation deals with the reduction of NOx with selective catalyst reduction (SCR) in a 0.5 litres Kirloskar TV-1 engine with newly developed catalysts. In order to study the emissions reduction potential of different catalysts experiments with Methyl Ester of Neem oil (MEON) have been conducted at various loads. For maximum engine load, the NOx emission without SCR is a maximum at 610 p.p.m, and it is reduced by 52% when Catalyst (zinc sulphate-sodium chloride) is used. With the catalyst potassium-sodium the emission reduction is 50%. The emission reduction for the catalyst magnesium Sulphate-sodium Chloride is 20%. Similarly at maximum engine load, the smoke emission without SCR is 37 HSU and it is being reduced by 42% when SCR (magnesium sulphate-sodium chloride) is used. Likewise for SCR (zinc sulphate-sodium chloride) the emission reduces to 37% and for SCR (potassium Silicate –sodium Chloride) the emission is 23%. For maximum engine load the CO emission is 0.1 (% by vol.) without SCR and it is being reduced by 0.025 (% by vol) when SCR (potassium Silicate- sodium chloride) and (zinc Sulphate- sodium Chloride) is used. There is a reduction of 0.01 (% by vol) when SCR (magnesium-sodium) is used.

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