Technogenic and Ecological Safety,
Год журнала:
2024,
Номер
15(1/2024), С. 15 - 35
Опубликована: Апрель 24, 2024
In
the
article,
which
shows
results
of
authors'
own
research,
purpose
was
to
identify
quantitative
and
qualitative
aspects
role
alternative
fuels
in
energy
balance
Ukraine
countries
European
Union
during
times
armed
aggression
post-war
reconstruction
country's
economy
infrastructure,
following
tasks
were
consistently
solved:
analysis
consumption
resources
world
use
types
fuel
transport;
nomenclature
properties
non-petroleum
origin.
The
object
study
is
Union.
subject
at
time
infrastructure.
scientific
novelty
research
that
notion
applicability
various
motor
for
powering
power
plants
with
reciprocating
internal
combustion
engines,
particular
FERV
units
SES
Ukraine,
has
gained
further
development,
terms
their
solving
problems
both
period
practical
significance
a
comparative
nomenclature,
prospects
engines
are
suitable
developing
strategic
foundations
functioning
fire
emergency-rescue
vehicles
departments
State
Emergency
Service
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Авг. 31, 2024
Abstract
There
has
been
an
intense
surge
in
interest
the
search
for
alternative
sources
of
petroleum
fuels
modern
world
as
a
result
inflation
fuel
prices
and
historic
supply
gap.
When
compared
to
fuels,
biodiesel
is
becoming
increasingly
valuable
option
due
fact
that
it
produces
less
emissions
provides
almost
same
amount
energy.
In
point
fact,
prime
aim
this
work
explore
possibility
utilizing
derived
from
lemongrass
oil
including
dibutyl
ether
additive
test
diesel
engine
operating
on
varied
compression
ratios.
The
findings
showed
best
settings
are
17.5
ratio
with
blend
30%
70%
fuel.
At
greater
loads,
brake
thermal
efficiency
lower
than
engines.
Lower
loads
specific
usage.
Mechanical
at
higher
highest
B30
blend,
but
emission
metrics
such
CO,
CO
2
,
HC,
NOx
were
reduced
inclusion
additive,
though
HC
rose
blends.
various
composition
additives,
+
4%
fourth
load
terms
both
power
mechanical
efficiency.
Fire,
Год журнала:
2024,
Номер
7(10), С. 364 - 364
Опубликована: Окт. 11, 2024
Environmental
and
energy
sustainability
concerns
have
catalyzed
a
global
transition
toward
renewable
biofuel
alternatives.
Among
these,
biodiesel
stands
out
as
promising
substitute
for
conventional
diesel
in
compression-ignition
engines,
providing
compatibility
without
requiring
modifications
to
engine
design.
A
comprehensive
understanding
of
biodiesel’s
physical
properties
is
crucial
accurately
modeling
fuel
spray,
atomization,
combustion,
emissions
engines.
This
study
focuses
on
predicting
the
PODL20
EB100,
including
liquid
viscosity,
density,
vapor
pressure,
latent
heat
vaporization,
thermal
conductivity,
gas
diffusion
coefficients,
surface
tension,
all
integrated
into
CONVERGE
CFD
library
improved
combustion
simulations.
Subsequently,
numerical
simulations
were
conducted
using
predicted
biodiesels,
validated
by
experimental
in-cylinder
pressure
data.
The
prediction
models
demonstrated
excellent
alignment
with
results,
confirming
their
accuracy
simulating
spray
dynamics,
processes,
turbulence,
ignition,
emissions.
Notably,
significant
improvements
key
parameters,
such
cylinder
release
rate,
recorded
use
biodiesels.
Specifically,
rates
EB100
reached
165.74
J/CA
140.08
J/CA,
respectively,
compared
60.2
fuel.
Furthermore,
when
evaluating
both
soot
NOx
emissions,
displayed
more
balanced
performance,
achieving
reduction
34.21%
alongside
moderate
increase
45.5%
In
comparison
PODL20,
reductions
20.4%
3%
also
noted.
International Journal of Renewable Energy Development,
Год журнала:
2024,
Номер
14(1), С. 83 - 103
Опубликована: Янв. 1, 2024
This
comprehensive
review
explores
the
feasibility
and
potential
of
using
hydrogen
gas
as
a
fuel
for
internal
combustion
engines,
topic
growing
importance
in
context
global
efforts
to
reduce
greenhouse
emissions
transition
towards
sustainable
energy
sources.
Hydrogen,
known
its
high
content
clean
properties,
presents
promising
alternative
traditional
fossil
fuels.
paper
examines
chemical
properties
benefits
over
conventional
fuels,
particularly
focusing
on
technological
advancements
modifications
required
compression
ignition
spark
engines
efficiently
utilize
hydrogen.
The
delves
into
necessary
engine
design
modification,
injection
systems,
characteristics,
emission
control
technologies
specific
both
engines.
Furthermore,
it
addresses
environmental
impacts,
including
reductions
gases
other
pollutants,
evaluates
economic
implications,
such
production
costs
compared
solutions.
Key
challenges
associated
with
storage,
distribution,
safety
are
discussed,
along
solutions
innovations
currently
under
investigation.
aims
provide
thorough
understanding
current
state
guiding
future
research
development
this
vital
field.
SAE technical papers on CD-ROM/SAE technical paper series,
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 12, 2024
<div
class="section
abstract"><div
class="htmlview
paragraph">The
benefits
introduced
by
the
replacement
of
conventional
centrifugal
pumps
with
volumetric
machines
for
Internal
Combustion
Engines
(ICEs)
cooling
were
experimentally
and
theoretically
proven
in
literature.
Sliding
Rotary
Vane
Pumps
(SVRPs)
ensure
to
achieve
an
interesting
reduction
ICEs
fuel
consumption
CO<sub>2</sub>
emissions.
Despite
are
a
reference
technology
ICE
lubrication
oil
circuits,
application
systems
still
not
represent
ready-to-market
solution.
Particularly
challenging
is
case
Heavy-Duty
due
wide
operating
range
pump
covers
terms
flow
rate
delivered
pressure
rise.</div><div
paragraph">Generally,
SVRPs
designed
operate
at
high
speeds
reduce
machine
dimensions
and,
consequently,
weight.
Nevertheless,
speed
increase
could
lead
severe
penalization
performance
since
growth
friction
losses.
They
produce
wear
phenomena
which
require
expensive
surface
treatments
or,
more
generally,
adoption
materials
resist
higher
mechanical
stresses.
Authors
their
previous
works
developed
alternative
design
strategy
based
on
compensating
size
capability.
It
was
found
thanks
peculiar
property
SVRPs.
An
optimized
variation
eccentricity
leads
volume
capability,
negligible
dimensions.
In
this
way,
be
reduced
avoiding
size.
A
Low-Speed
(LS)
SVRP
prototype
hence
built,
benefit
proposed
demonstrated
after
theoretical
model-based
design.</div><div
paragraph">A
further
performances
presented
paper.
Machine
shaping
indeed
stator
diameter/pump
length
ratio,
considering
that
two
geometrical
parameters
influence
volumetric,
indicated,
efficiencies.
The
optimization
these
produces
combined
positive
effect
overall
efficiency
improvement.
Hence,
updated
comprehensive
modelling,
produced
work.
Finally,
compared
(CURSOR
13
NG)
over
WHTC
(World
Harmonized
Transient
Cycle)
offered
energy
drive
calculated.</div></div>
Technogenic and Ecological Safety,
Год журнала:
2024,
Номер
15(1/2024), С. 15 - 35
Опубликована: Апрель 24, 2024
In
the
article,
which
shows
results
of
authors'
own
research,
purpose
was
to
identify
quantitative
and
qualitative
aspects
role
alternative
fuels
in
energy
balance
Ukraine
countries
European
Union
during
times
armed
aggression
post-war
reconstruction
country's
economy
infrastructure,
following
tasks
were
consistently
solved:
analysis
consumption
resources
world
use
types
fuel
transport;
nomenclature
properties
non-petroleum
origin.
The
object
study
is
Union.
subject
at
time
infrastructure.
scientific
novelty
research
that
notion
applicability
various
motor
for
powering
power
plants
with
reciprocating
internal
combustion
engines,
particular
FERV
units
SES
Ukraine,
has
gained
further
development,
terms
their
solving
problems
both
period
practical
significance
a
comparative
nomenclature,
prospects
engines
are
suitable
developing
strategic
foundations
functioning
fire
emergency-rescue
vehicles
departments
State
Emergency
Service
