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Reduction of NOX Emission in CI Engine Using SCR (selective catalytic reduction) Technology
 

P.Madhava Naidu1, J. Deva kanth2  and M.Paul Daniel3

1 UG student, Mechanical Engineering, Anantha Lakshmi institute of technology &sciences, Ananthapur (A.P.). e-mail: Naidumadhav5@gmail.com

2  UG student, Mechanical Engineering, Anantha Lakshmi institute of technology & sciences, Ananthapur (A.P.) e-mail: jyothidevakanth@gmail.com

3Associate prof, Department of Mechanical Engineering, Anantha Lakshmi institute of technology & sciences, Ananthapur (A.P.). e-mail: Daniel.matcha7@gmail.com

                                                                      

ABSTRACT

In diesel engines the combustion process  high temperatures and pressures which result in significant production of gaseous nitrogen oxides (N Ox ), an air pollutant that constitutes a unique challenge with regard to their reduction. Diesel cars still produce nitrogen oxides at a similar level to those bought a decade and a half ago under real world tests; hence, diesel cars emit around 20 times more nitrogen oxides than petrol cars. Modern on-road diesel engines typically use selective catalytic reduction (SCR) systems to meet emissions laws, as other methods such as exhaust gas recirculation (EGR) can adequately reduce NOx to meet the newer standards applicable in many jurisdictions .CI Engines for the present stringent emissions norms (Euro-V) – is the promising SCR (Selective catalysitc reduction) technology for Reduction of the NOx emission. It is advanced active emissions control technology system that injects a liquid – reductant agent thorugh a special catalyst into the exhaust stream of a diesel engine.SCR technology is designed to permit nitrogen oxide (NOx) reduction reactions to takes place in an oxidizing atmosphere. This paper gives the study of the SCR technology working principle, construction and its advantages & disadvantages.

Key Words: CI Engines, EGR System, Euro Norms, NOx emissions, SCR Technology.

 

 

 

International eJournal of Mathematical Sciences, Technology and Humanities

Volume 7, Issue 1, Pages:  1 - 6