www.tjprc.org SCOPUS Indexed Journal editor@tjprc.org EFFECT OF INJECTION PRESSURE AND INJECTION TIMING IN PERFORMANCE AND EMISSION CHARACTERISTICS IN DI ENGINE USING BLEND OF METHYL ESTERS OF ALGAE V. NARESH 1 , S. PRABHAKAR 2 , K. ANNAMALAI 3 & P. NAVEENCHANDRAN 4 1 Research Scholar, Bharath Institute of Higher Education and Research (Bharath University), Chennai, Tamil Nadu, India 2 Department of Automobile Engineering, Wollo University, Ethiopia 3 Department of Automobile Engineering, MIT Campus, Chennai, Tamil Nadu, India 4 Department of Automobile Engineering, Bharath Institute of Higher Education and Research (Bharath University), Chennai, Tamil Nadu, India ABSTRACT In the study on “Performance and Emission Studies on a four stroke internal-combustion engine mistreatment alkyl organic compound of algae oil with EGR”, a detailed investigation of characteristics (performance and emission) of Blends of alkyl Esters of protoctist oil by varying the EGR management price (5 to 20%) mistreatment with direct injection internal-combustion engine was made. From the preceding studies on similar title, it has been established that the discharge in Night is higher in protoctist, primarily based on biodiesel. This paper from the present study focuses on the Night emission, and the way it is reduced by mistreatment with the cooled EGR. KEYWORDS: Methyl Esters, Alkyl Esters, Algae Oil, Emission & EGR Received: Nov 01, 2018; Accepted: Nov 20, 2018; Published: Dec 31, 2018; Paper Id.: IJMPERDFEB201915 1. INTRODUCTION 1.1 The Biodiesel Renewable energy is the best solution to address both energy and environmental problems. An alternative for diesel fuel is biodiesel, produced through the process of transesterification with least impact on the environment. Catalyst is part of this process, wherein vegetable oils and animal fats react with alcohol. The fatty acid alkyl esters produced through the reaction is called as biodiesel. In contrast to the diesel, biodiesel possess higher viscosity, density, pour point, flash point in certain number, and on a mass basis its energy content is about 12% less. Another positive point of biodiesel is it significantly reduces exhaust emissions. Reports reveal that biodiesel of hundred percent purity releases lower tail pipe exhaust emissions compared to the diesel fuel. And, biodiesel is considered to be sulfur - free fuel with 99% less SO x release as compared to diesel. The higher oxides of nitrogen (NO X ) are released with biodiesel, which is hundred percent pure. Original Article International Journal of Mechanical and Production Engineering Research and Development (IJMPERD) ISSN(P): 2249-6890; ISSN(E): 2249-8001 Vol. 9, Issue 1, Feb 2019, 143-152 © TJPRC Pvt. Ltd.