Energies,
Год журнала:
2024,
Номер
17(24), С. 6228 - 6228
Опубликована: Дек. 11, 2024
Internal
combustion
engines
(ICEs)
currently
account
for
approximately
25%
of
global
power
generation.
Notably,
this
technology
still
plays
a
crucial
role
in
large
segment
the
transportation
sector.
In
editorial,
short
overview
latest
developments
and
current
research
trends
related
to
internal
is
presented.
Furthermore,
11
contributions
Special
Issue
are
introduced.
They
cover
three
main
topics:
use
new
fuels
both
automotive
railway
applications;
testing
additives
ICEs
fed
with
conventional
fuels;
CFD
simulation
applied
analysis
design
ICE
components.
Energy & Fuels,
Год журнала:
2025,
Номер
39(9), С. 4421 - 4433
Опубликована: Фев. 20, 2025
The
growing
global
population
and
increasing
energy
demands
are
placing
immense
pressure
on
the
sustainability
of
fossil
fuels
due
to
resource
depletion
environmental
concerns.
Adopting
a
circular
economy
approach,
which
repurposes
waste
materials
into
alternative
fuels,
presents
promising
solution
for
reducing
both
fuel
dependency
generation.
Diesel
additives
play
critical
role
in
enhancing
quality
performance;
however,
accurately
monitoring
their
concentrations
remains
challenge,
often
leading
overuse
elevated
costs.
This
study
utilizes
near-infrared
(NIR)
spectroscopy
coupled
with
partial
least-squares
(PLS)
modeling
enable
real-time
additive
concentrations,
optimizing
application,
We
tested
waste-derived
oils─such
as
tire
oil,
plastic
cooking
oil─alongside
conventional
diesel,
incorporating
three
key
additives:
cold-flow
improver
(CFI),
conductivity-lubricating
(CLI),
cetane
number
(CNI).
developed
predictive
models
demonstrated
calibration
coefficients
exceeding
0.98
RPD
values
4.5
CFI,
2.7
CLI,
4.4
CNI.
Repeatability
tests
produced
RSD
3.9%
6.9%
7.2%
Comprehensive
validation,
including
external
testing
statistical
evaluations
(RMSEC,
RMSEP,
RMSECV),
confirmed
models'
strong
accuracy
reliability.
These
findings
highlight
significant
potential
PLS
precise
determination
diesel
across
range
matrices,
making
them
highly
applicable
industrial
use
further
research.
Energies,
Год журнала:
2025,
Номер
18(5), С. 1038 - 1038
Опубликована: Фев. 21, 2025
This
article
presents
the
results
of
a
study
on
rheological
and
lubricating
properties
selected
alcohol
fuels.
Methanol,
ethanol,
2-propanol
are
investigated,
for
which
density,
kinematic,
dynamic
viscosity
determined
at
temperatures
in
range
15–60
°C.
In
addition,
water
content
studied
fuels
is
determined.
Based
measurements,
coefficient
temperature
change
density
relative
percentage
decrease
kinematic
with
increasing
calculated.
Subsequently,
regression
models
built
to
describe
value
tested
liquid
as
function
temperature.
Next,
under
subjected
evaluation
antiwear
using
high-frequency
reciprocating
rig
(HFRR).
For
each
fuel,
corrected
wear
scar
size
WS1.4,
measure
lubricity,
average
friction,
oil
FILM
thickness
during
conduct
HFRR
test
standardized
conditions,
The
measurements
carried
out
25
°C
accordance
methods
time
equal
75
min.
Due
low
lubricity
fuels,
additional
tests
performed
reduced
30
this
case,
all
show
similar
WS1.4
value,
ranges
from
384
μm
methanol
through
422
426
ethanol.
marks
samples
after
execution
used
draw
qualitative
conclusions
about
alcohols.
obtained
summarized,
possibilities
their
use
further
research
provided.
Greenhouse Gases Science and Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 23, 2025
ABSTRACT
Pollutant
emissions
such
as
carbon
monoxide
(CO),
hydrocarbons
(HCs),
nitrogen
oxides
(NO
x
),
and
particulate
matter
(PM)
from
diesel
engines
have
serious
adverse
effects
on
both
human
health
the
environment.
Advanced
post‐engine
emission
control
systems,
oxidation
catalyst
(DOC)
selective
catalytic
reduction
(SCR),
proven
effective
in
substantially
reducing
or
minimizing
of
CO,
HC,
NO
.
Additionally,
use
metal‐based
fuel
additives
has
been
widely
studied
applied
practice
to
improve
engine
performance
optimize
outcomes.
The
interaction
between
DOC
SCR
systems
become
a
key
area
research
focus.
This
study
investigates
impact
additives—including
cerium
(IV)
oxide,
copper
(II)
magnesium
nickel
titanium
oxide—on
catalysts
under
various
load
conditions.
In
experiments,
conventional
were
used,
specifically
Pt/Al
2
O
3
for
V
5
‐WO
/TiO
versus
Ag/Al
SCR.
variations
NO,
levels
exhaust
gas
monitored,
efficiency
converting
these
was
calculated
analyzed.
results
indicate
that
combination
with
technologies
can
effectively
reduce
pollutant
engines.
Among
tested,
oxide
found
be
particularly
enhancing
conversion
efficiencies
systems.
