An experimental investigation on CI engine using biodiesel blends as fuel

Document Type : Primary Research paper


Department of Aeronautical Engineering, Nehru Institute of Technology, Coimbatore, Tamil Nadu, India.


Biodiesel developed from nonedible
oils promise to be a very important
prospective alternative fuel for diesel
engines in India. Vegetable oil has slightly
lower calorific value than diesel fuel. This
can be attributed to presence of oxygen in
the molecules of vegetable oils. Vegetable
oil has cetane number about 35 to 40
depending upon the composition where as
diesel fuel has a cetane number around 45.
Certain functional groups and poor volatility
is responsible for their comparatively low
cetane number. Increasing the cetane
number of diesel fuel, either by lowering
aromatic content of the fuel through hydro
treating and by addition of chemical cetane
improvers, is a cost-effective option to
reduce diesel engine emissions. Jatropha -
curcas as a non-edible methyl ester biodiesel
fuel source is used to run single cylinder,
four-stroke diesel engine. An attempt has
been made in this paper to give an overview
by comparing its performance and emission
characteristics with diesel – biodiesel blend
of B20 & B50. The blends of Jatropha
methyl ester and diesel could be successfully
used in diesel engines without any
modification with acceptable performance
and better emissions.


Volume 12, Issue 1
International virtual conference on Newer Trends and Innovation in Nanotechnology Materials Science . Science and Technology
March 2021
Pages 557-561