In:
Thermal Science, National Library of Serbia, Vol. 27, No. 4 Part B ( 2023), p. 3457-3466
Abstract:
Natural gas, which is also referred to as eco-friendly fuel, is being seen as
a potential solution to challenge the decline of crude oil resources and
the deteriorating air quality in urban areas. This fuel has been verified
to emit less CO, HC, and PM compared to other fuels. A potential approach to
reducing NOx and soot emissions while also achieving low fuel consumption is
the low temperature combustion process. In this study, internal combustion
engines were simulated under various conditions. The objective was to
investigate the effect of different operating variables on the low
temperature combustion mode. To begin with, a natural gas powered engine was
modeled using complex chemical kinetics software. The outcomes of the
simulation were then compared to experimental data, demonstrating a high
level of agreement. Subsequently, the impacts of key variables, including
the air-fuel ratio, compression ratio, and engine speed, were analyzed using
a cycle simulation code. Increasing the compression ratio improves engine
performance, and the specific fuel consumption decreases. However, it leads
to a significant increase in NOx emissions until a certain value.
Thereafter, it changes the trend. Engine speed indirectly affects
performance by increasing fuel consumption and changing ignition timing. A
leaner air fuel ration may be used to produce more power and keep the
temperature of combustion below a certain value (low-temperature
combustion), ensuring low NOx emissions.
Type of Medium:
Online Resource
ISSN:
0354-9836
,
2334-7163
DOI:
10.2298/TSCI2304457K
Language:
English
Publisher:
National Library of Serbia
Publication Date:
2023
detail.hit.zdb_id:
2241319-4
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