An Experimental Study on NOX Reduction in a Diesel Engine with Cold EGR
Cold EGR 장착 디젤엔진에서의 NOx 저감에 관한 실험적 연구
- Chauhana, Bhupendra Singh (Division of Mechanical and Automotive Engineering, Kongju National University, Korea) ;
- Kumar, Naveen (Department of Mechanical Engineering, Delhi Technological University, Bawana Road, Delhi 42, India) ;
- Jun, Yong-Du (Division of Mechanical and Automotive Engineering, Kongju National University, Korea)
- Published : 2010.05.28
The objective of the current research work is to investigate the usage of biodiesel combined with the use of EGR in order to reduce the emission of all regulated pollutants from diesel engines. A single cylinder, air cooled, constant speed direct injection diesel engine was used for the experimental work and a cold EGR system was developed and fitted to the engine. Concentrations of HCs, NOx, and CO from the exhaust gas along with the smoke opacity were measured. Engine performance parameters such as the brake thermal efficiency (BTE) and the brake specific energy consumption (BSEC) were also calculated from the measured data. The results from the present investigation suggest that 25-30% EGR rate could give excellent NOx reduction without any significance penalty on smoke opacity or BSEC under the engine load of up to 40%. Under the full load condition, 15% EGR rate was found to be an option while higher EGR rate resulted in inferior performance and heavy smoke.