COMBUSTION AND EMISSION CHARACTERISTICS OF A DIESEL ENGINE FUELLED WITH JATROPHA AND DIESEL OIL BLENDS
Abstract
The depletion of oil resources as well as the stringent environmental
regulations has led to the development of alternate energy sources. In this
work the combustion, performance and emission characteristics of a single
cylinder diesel engine when fuelled with blends of jatropha and diesel oil are
evaluated. Experiments were conducted with different blends of jatropha oil
and diesel at various loads. The peak pressures of all the blends at full load
are slightly lower than the base diesel. There is an increase in the ignition
delay with biodiesel because of its high viscosity and density. The results
show that the brake thermal efficiency of diesel is higher at all loads
followed by blends of jatropha oil and diesel. The maximum brake thermal
efficiency and minimum specific fuel consumption were found for blends
upto B20. The specific fuel consumption, exhaust gas temperature, smoke
opacity and NOx were comparatively higher. However there is an
appreciable decrease in HC and CO2 emissions while the decrease in CO
emission is marginal. It was observed that the combustion characteristics of
the blends of esterified jatropha oil with diesel followed closely with that of
the base line diesel.
Dates
- Submission Date2010-06-14
- Revision Date2011-05-09
- Acceptance Date2011-07-25
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Volume
15,
Issue
4,
Pages1205 -1214