Silniki Spalinowe/Combustion Engines,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 11, 2024
The
search
for
substitutes
conventional
fuels
leads
to
the
use
of
hydrocarbon-free
or
synthetic
fuels.
One
them
is
hydrogen.
hydrogen
in
combination
with
a
two-stage
charge
creation
system
combustion
lean
(λ
>
1)
very
3)
charges.
simulation
tests
carried
out
were
aimed
at
determining
best
configuration
chamber
connecting
prechamber
main
chamber.
Three
variants
diameter
holes
chambers
selected
(d
=
0.5;
1.0
and
1.5
mm)
different
fuel
doses
fed
prechamber.
A
passive
(qo_PC
0
mg)
an
active
0.4
1.2
used,
while
simultaneously
sending
dose
(qo_MC
6
mg).
research
was
conducted
using
AVL
Fire
2022.1
software
moving
mesh
LDV
engine.
As
result
work,
most
favorable
conditions
carrying
process
determined,
considering
thermodynamic
effects
accepted
values
nitrogen
oxide
concentration.
resulting
correlation
maps
sizes
openings
may
determine
initial
selection
possibilities
controlling
TJI
system.
Abstract
This
study
aims
to
operate
a
CRDI‐equipped
single‐cylinder
CI
engine
in
dual
fuel
mode
with
pilot‐ignited
WCB
and
port‐injected
NH
3
fuel.
The
current
experimentally
investigates
the
influence
of
various
AEFs
on
performance,
combustion,
pollutant
emissions
at
peak
load
(4.14
bar
BMEP
@
1500
rpm)
conditions
constant
speed.
obtained
results
showed
that
AEF
was
limited
due
its
inherent
combustion
properties.
Under
aforementioned
operating
conditions,
we
achieved
maximum
44.89%
AEF.
achieves
BTE
29.33%.
Moreover,
operation,
switches
from
diffusion
phase
operation
rapid
controlled
as
increases.
ICT
reduces
1488
1443
K
when
increases
0%
44.89%,
respectively.
Although
injection
notably
decreased
CO
2
,
HC,
CO,
smoke
by
57.14%,
60.26%,
71.42%,
67.59%,
NOx
increased
16.21%
compared
operation.
BSEC
dual‐fuel
is
13.07
MJ/kW‐hr,
which
slightly
higher
than
biodiesel
mode,
12.17
MJ/kW‐hr.
ICP,
HRR,
ID
were
2.6
bar,
4.64
J/deg.,
5
CAD,
CD
phasing
reduced
9.3
CAD
7.98
However,
turbulence
within
cylinder
fluctuates
significantly,
COV
IMEP
reaching
5.23%
an
44.89%.
