Reduction of NOx in the exhaust gas of DI- diesel engine fueled with mahua methyl ester along with exhaust gas recirculation

Abstract

Biodiesels are alternative fuels for petroleum-based diesel without major modifications of engine. In the environmental aspect, also biodiesel gives fewer pollutants than petroleum diesel. However, the NO x level is slightly higher. To reduce NO x , some of the methods are being used, which include direct injection, turbocharging, air-to-air intercooling, combustion optimization with and without swirl support, multivalve cylinder head, advanced high pressure injection system, i.e., split injection or rate shaping, and electronic management system. However, technologies such as exhaust gas recirculation ͑EGR͒, soot traps, and exhaust gas after treatment are gaining emphasis to cater to the challenges posed by increasingly stringent environmental emission legislations. In this work, experimentation was conducted on a single cylinder diesel engine with mahua methyl ester ͑MME͒ in the neat form along with the cooled EGR and performance, combustion pressure, and emission parameters are collected by using suitable instrumentation. Same experimentation was repeated for the petroleum diesel and a comparison was made to evaluate the applicability of MME along with EGR without major modifications. After the analysis of results, it was found that 5% EGR is recommendable with neat biodiesel ͑MME͒ run, and in most of the situations, it proved its merit over neat diesel run.

Combustion and performance analysis of direct injection, compression ignition engine fuel with preheated neat cotton seed methyl ester

“…VCMRFE 5.73 combustion software was used to acquire data from the engine. [16,17] The exhaust gas temperature was measured with a thermocouple and each parameter was taken after the stabilization of exhaust gas temperature, which indicates the stable running of the engine at a particular load. To measure the exhaust gas emissions, a crypton-290 five gas analyzer was used which is approved by ARAI.…”