Effect of hydrogen enrichment in the intake air of
diesel engine fuelled with honge biodiesel blend
and diesel
Surya Kanth
a
, Sumita Debbarma
a
, Biplab Das
a,b,*
a
Department of Mechanical Engineering, National Institute of Technology Silchar, Assam, 788010, India
b
School of the Built Environment, Centre for Sustainable Technologies, Ulster University, N Ireland, BT37 0QB, UK
highlights
Locally available non-edible honge oil is used to produce biodiesel.
Performance of hydrogen enriched biodiesel and diesel fuel is presented.
Enrichment of hydrogen enhance BTE and BSFC of the engine by almost 2e6%.
Presence of hydrogen reduce the emission of CO, HC, and smoke by 7e35%.
Higher in-cylinder pressure and advancement of combustion is observed.
article info
Article history:
Received 22 February 2020
Received in revised form
2 August 2020
Accepted 18 August 2020
Available online xxx
Keywords:
Hydrogen
Honge biodiesel
Brake thermal performance
Combustion
Emissions
abstract
In the current investigation, the enrichment of hydrogen with the honge biodiesel blend
and diesel is used in a compression ignition engine. The biodiesel is derived from the honge
oil and mixed with diesel fuel by 20% (v/v). Thereafter, hydrogen at different volume flow
rates (10 and 13 lpm) is introduced into the intake manifold. The outcomes by enrichment
of hydrogen on the performance, combustion and emission characteristics are investigated
by examining the brake thermal efficiency, fuel consumption, HC, CO, CO
2
, NOₓ emissions,
in-cylinder pressure, combustion duration, and rate of heat release. The engine fuelled
with honge biodiesel blend is found to enhance the thermal efficiency, combustion char-
acteristics. Compare to diesel, the BTE increased by 2.2% and 6% less fuel consumption for
the HB20 þ 13H
2
blend. Further, reduction in the emission of exhausts gases like CO and HC
by 21% and 24%, respectively, are obtained. This is due to carbon-free structure in
hydrogen. Moreover, due to high pressure in the cylinder, there is a slight increase in ox-
ides of nitrogen emission compare to diesel. The combustion characteristics such as rate of
heat release, combustion duration, and maximum
2
rate of pressure rise and in-cylinder
pressure are high due to hydrogen.
© 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
* Corresponding author. Department of Mechanical Engineering, National Institute of Technology Silchar, Assam, 788010, India.
E-mail addresses: b.das@ulster.ac.uk, biplab.2kmech@gmail.com (B. Das).
Available online at www.sciencedirect.com
ScienceDirect
journal homepage: www.elsevier.com/locate/he
international journal of hydrogen energy xxx (xxxx) xxx
https://doi.org/10.1016/j.ijhydene.2020.08.152
0360-3199/© 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
Please cite this article as: Kanth S et al., Effect of hydrogen enrichment in the intake air of diesel engine fuelled with honge biodiesel
blend and diesel, International Journal of Hydrogen Energy, https://doi.org/10.1016/j.ijhydene.2020.08.152