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J. Renewable Sustainable Energy 1, 053104 (2009); doi:10.1063/1.3255043 (14 pages)

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

V. Prasad ¹,

N. Babu ²,

and B. Rao ³

¹ Department of Mechanical Engineering, GMR Institute of Technology, Rajam, Andhra Pradesh 532127, India Map This map
² Department of Mechanical Engineering, Aditya Institute of Technology and Management, Tekkali, Andhra Pradesh 532127, India Map This map
³ Department of Marine Engineering, Andhra University, Visakhapatnam, Andhra Pradesh 530003, India Map This map

Abstract
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Article Objects (21)

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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 (EGR), 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 (MME) 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 (MME) run, and in most of the situations, it proved its merit over neat diesel run.

Article Outline

INTRODUCTION
PREPARATION AND CHARACTERIZATION OF MME
1. Transesterification
2. Preparation of MME
  1. First stage (acid-catalyzed stage)
  2. Second stage (base-catalyzed stage)
  3. Water washing
EXPERIMENTAL SETUP AND EXPERIMENTATION
1. EGR system
RESULTS AND DISCUSSIONS
1. Analysis of engine performance and emission analysis
  1. MME with EGR operation
  2. Petroleum diesel with EGR operation
  3. Comparison of MME and petroleum diesel operations
CONCLUSION

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KEYWORDS and PACS

Keywords

air pollution control, biofuel, combustion, diesel engines, fuel systems, nitrogen compounds, petroleum

PACS

89.20.Kk

Engineering
89.60.-k

Environmental studies

ARTICLE DATA

History

Received 12 March 2009
Accepted 6 October 2009
Published 30 October 2009

Permalink

http://link.aip.org/link/JRSEBH/v1/i5/p053104/s1

PUBLICATION DATA

ISSN:

19417012 (print)

19417012 (online)

Publisher:

$abstract.society.value is a Member of CrossRef

American Institute of Physics

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