Performance and emission of homogeneous charge compression ignition engine with modified volume of displacements using kerosene fuel
Homogenous Charge Compression Ignition (HCCI) is a promising combustion process which has lower fuel consumption and emits very low nitrogen oxides (NOx). It is one of the few solutions on hand that looks very promising to address the issues on the atmospheric air pollution and depleting fossil f...
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| Main Author: | |
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| Format: | Thesis |
| Language: | English |
| Published: |
2014
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| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/84184/1/FK%202014%20175%20-%20ir.pdf |
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| Summary: | Homogenous Charge Compression Ignition (HCCI) is a promising combustion
process which has lower fuel consumption and emits very low nitrogen oxides (NOx).
It is one of the few solutions on hand that looks very promising to address the issues
on the atmospheric air pollution and depleting fossil fuel resources exacerbated by
increasing energy consumption of the world. However, currently there is no
established means for increasing the limited power at HCCI mode. In this project,
intake air heating with increasing volume of displacement were the chosen parameter
that can help the combustion process of the engine to run under HCCI mode. The
studies were carried out on a single cylinder air-cooled spark ignition (SI) engine. All
the data analysed for the notification of performance and emission characteristics of
the engine at SI condition were analysed. An experimental works have been done by
fitting an intake air heater to the engine and operate the engine using kerosene fuel in
HCCI mode at standard condition. Compressed auto- ignition combustion of
homogeneously premixed charge of kerosene was achieved by heating the intake air.
Other experiment done was to investigate the effect of volume of displacement
changes of the engine cylinder diameter from 5.0cm to 5.15cm. All experiments were
repeated at different engine speeds ranging from 800 to 1350 rpm to get the output
parameters such as load, torque, power, volumetric efficiency, brake mean effective
pressure (BMEP), exhaust gas temperatures and also NOx, carbon monoxide (CO),
hydro carbon (HC) were observed at three different throttle positions with fixed speed
of 800 rpm. From the study it is found that the power rate for HCCI after modification
of volume displacement is 12 % - 76.5% and 1.5% - 5.6% higher than the values of
HCCI using standard volume displacement and SI system respectively. Also it is found
that the rate of NOx of HCCI after modification of volume displacement is 10%-12%
lower than HCCI using standard volume displacement also 85%-86.5% lower than SI
system. |
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