www.tjprc.org SCOPUS Indexed Journal editor@tjprc.org EFFECT OF COOLED EGR TECHNIQUE ON PERFORMANCE AND EMISSIONS OF CRDI ENGINE OPERATED WITH BIODIESEL BLENDS K. V. NARASIMHA RAO 1* , SHAIK NAGUL MEERAVALI 2 & NITIN DATTATREYA KAMITKAR 3 1 Professor, Department of Mechanical Engineering, Koneru Lakshmaiah Education Foundation (KLEF), Andhra Pradesh, India 2 Student, Department of Mechanical Engineering, Koneru Lakshmaiah Education Foundation (KLEF), Vaddeswaram, Guntur District, Andhra Pradesh, India 3 Assistant Professor, Department of Mechanical Engineering, KLEF, Andhra Pradesh, India ABSTRACT Hazardous pollutants and limited sources of fossil fuels made power dependent sectors to focus on alternative sources. However, complete replacement is still constrained and challenging. Attempts to assure complete replacement were more or less fulfilled by biodiesels. In this article, trials made on EGR associated single cylinder CRDI engine with blends of Jatropha and Rice-bran biodiesels are discussed. Set of readings obtained under the split injection system of mass 10% pilot fuel and 90% main fuel maintained at 300 bars with dwell of 10 o and 15% of cold EGR are examined. Results obtained show, brake thermal efficiency is higher at peak load for RJD-II sample than RJD-I sample, whereas specific fuel consumption is same. Sample RJD-I has indicated highest break mean effective pressure at full load which influenced mechanical efficiency. Remarkable changes observed in emissions indicate 11.7% and 16.6% reduction in CO for RJD-I and RJD-II, respectively. NO x discharge reduced up to 5.5% and 7.7% for RJD-I and RJD-II, respectively. CO 2 products are 6.6% and 8.6% higher for RJD-I and RJD-II respectively than diesel. KEYWORDS: Pollution, EGR, CRDI, Split injection & RJD-I and RJD-II Received: May 07, 2019; Accepted: May 28, 2019; Published: Jun 24, 2019; Paper Id.: IJMPERDAUG201925 NOMENCLATURE CRDI: Common Rail Direct Injection RJD-I: Composition of 10% Rice bran biodiesel, 10% of Jatropha biodiesel and 80% neat Diesel. RJD-II: Composition of 15% Rice bran biodiesel, 15% of Jatropha biodiesel and 70% neat Diesel. EGR: Exhaust Gas Recirculation ASTM: American Society for Testing and Materials INTRODUCTION Both transport sector and economic growth of the country are interrelated, which directly influence the demand for portable energy sources. Meanwhile road, rail, sea and aviation depend on affluence of fossil sources. Environmental sustainable practices in the manufacturing technology of automobiles have many challenges, whereas replacement of fossil fuels with alternatives is still nightmare. Portable fossil liquid energy sources are Original Article International Journal of Mechanical and Production Engineering Research and Development (IJMPERD) ISSN (P): 2249-6890; ISSN (E): 2249-8001 Vol. 9, Issue 4, Aug 2019, 241-252 © TJPRC Pvt. Ltd.