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Investigation of Engine Emission with Diesel - Palm Biodiesel - Antioxidant Blend
The 10 th AUN/SEED-Net Regional Conference on Energy Engineering (RCEneE2017) (2017)
  • Mahendra Varman, M. Varman
Abstract
Similar  properties  of  biodiesel  to  conventional  diesel  have  made  biodiesel  as a  promising  fuel.
However, its NOx emission was reported higher by  most researchers in the world. In this study,
antioxidants are used in the effort of improving the oxidation stability of biodiesel and reducing the
NOx  emission  while  maintaining  the  engine  performance.  p-Phenylenediamine  (PPD)  and  N,N’-
diphenyl-p-phenylenediamine  (DPPD)  are  added  in  0.025  wt%  and  0.15  wt%  concentrations,
respectively  into palm oil methyl  ester-diesel blend. The performance characteristics of biodiesel
blends are tested on a single cylinder engine with an attached emission analyser. The addition of
the  PPD  and  DPPD  antioxidants  improved the  oxidation  stability  of  biodiesel  without  affecting
much in the density and kinematic viscosity. For B20 (20% biodiesel + 80% Euro 5 diesel), the
addition of DPPD showed the best results by reducing NO (0.8% lower on average), CO (10.8%
lower on average) and HC emission (32.9% lower on average), as compared to B7 blend. However
in terms of engine performance, B20+DPPD showed higher BSFC and lower  brake power when
compared to B7 blend.
Keywords
  • PPD antioxidant,
  • DPPD antioxidant,
  • palm oil methyl ester-diesel blend,
  • emission characteristics
Publication Date
Spring November 10, 2017
Location
Yangon, Myanmar
Comments
Organized  by  Yangon  Technological  University, AUN/SEED-Net, JICA and University of Yangon
Citation Information
C.M. Choy, M. Varman, H.H. Masjuki. (2017, November 9-11). Investigation of Engine Emission with Diesel - Palm Biodiesel - Antioxidant Blend. Paper presented at the 10th AUN/SEED-Net Regional Conference on Energy Engineering (RCEneE2017), Yangon, Myanmar, pp. 459-464. Organized by Yangon Technological University, AUN/SEED-Net, JICA and University of Yangon.
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