Ammonia
is
carbon
free,
while
its
low
flame
speed
limits
applications
in
engines.
This
study
aims
to
enhance
ammonia
combustion
using
pre-chamber
turbulent
jet
combined
with
post
spark
ignition
(TJ-PSI)
strategy.
The
experiments
are
performed
a
constant-volume
vessel,
one
plug
installed
the
and
other
placed
downstream
region
of
jet.
For
TJ-PSI
mode,
first
triggered
quenched
when
passing
through
nozzle
orifice,
mixture
ignited
by
following
main
chamber.
With
premixed
stoichiometric
ammonia/'air'
mixtures,
characteristics
strategy
compared.
experimental
results
show
that
can
significantly
increase
heat
release
rate
maintaining
higher
efficiency,
duration
decreased
69%
maximum.
Schlieren
images
turbulence
caused
ejection
combustion.
Meanwhile,
effects
time
interval
between
two
ignitions,
initial
pressure
on
also
investigated.
has
significant
effect
process.
occurs
during
lead
extinction
kernel
due
strong
jet,
over
extended
intervals
shows
smaller
enhancing
effect.
increased
pressure,
more
