Combustion property analyses with variable liquid marine fuels in combustion research unit
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Failid
Kuupäev
2018
Kättesaadavus
Autorid
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
The quality of ignition and co
mbustion of four marine and power plant fuels were
studied in a Combustion Research Unit, CRU. The fuels were low
-
sulphur Light Fuel Oil (LFO,
baseline), Marine Gas Oil (MGO), kerosene and renewable wood
-
based naphtha. To meet climate
change requirements a
nd sustainability goals, combustion systems needs to be able to operate
with a variety of renewable and ‘net
-
zero
-
carbon’ fuels. Due to the variations in the chemical and
physical properties of the fuels, they generally cannot simply be dropped into existi
ng systems.
The aim of this research project was to understand how changes in fuel composition affect engine
operation. The focus was on how various properties of the fuels impact on the combustion process
–
especially ignition delay and in
-
cylinder combus
tion. The goal of the research project was to
allow broad fuel flexibility without any or only minor changes to engine hardware.
Before the
engine tests, the CRU forms an easy and cost
-
effective device to find out the engine suitability of
the fuel
. The re
sults showed that the ignition delay decreased expectedly with all fuels when the
in
-
cylinder pressure and temperature increased. The differences in the maximum heat release
rates between fuels decreased in high
-
pressure conditions. MGO had the shortest ig
nition delay
under both pressure and temperature conditions. Based on the CRU results MGO and kerosene
are suitable to use in compression
-
ignited engines like the reference fuel LFO. In contrast
renewable naphtha had a long ignition delay. If naphtha is us
ed in a CI engine, the engine must
be started and stopped with, e.g. LFO or MGO.
Kirjeldus
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Märksõnad
diesel engines, alternative fuels, ignition delay, heat release rate, articles