Strona
8
z
34
delivery
is
high
(i.e.
when
the
throttle
is
fully
open).
When
the
LPG
pressure
drops
below
the
minimum
value
programmed
in
the
controller,
the
system
will
switch
to
petrol.
1.9.
Selection
of
injector
nozzles
The
injector
nozzles
selection
should
also
be
based
on
the
engine
power.
The
selection
of
injector
nozzles
should
ensure
that
at
high
engine
loads
and
high
rpm,
the
multiplier
for
a
given
injection
time
should
be
close
to
1.
For
the
majority
of
engines,
the
injection
times
equal
roughly
15
[ms].
The
table
below
presents
the
nozzles’
diameters
depending
on
the
engine
power
per
1
cylinder.
To
select
the
right
diameter
of
nozzles,
the
engine
power
needs
to
be
divided
by
the
number
of
its
cylinders.
Nozzle
diameter
[mm]
Reducer
pressure
1
[bar]
Engine
power
per
cylinder
[KM]
1,8
‐
2
12
–
17
2,1
‐
2,3
18
–
24
2,4
‐
2,6
25
–
32
2,7
‐
2,9
33
–
40
3,0
41
–
48
Note:
the
above
values
are
estimates
only
and
do
not
necessarily
always
reflect
the
reality.
This
can
occur
e.g.
in
vehicles
with
semi
‐
sequential
or
full
group
(all
injectors
activated
simultaneously)
injection.
In
such
cases,
the
nozzles’
diameters
will
be
smaller
than
those
presented
in
the
table
above
as
in
these
systems
the
amount
of
supplied
LPG
is
higher
than
in
full
sequence
systems
–
two
times
higher
for
semi
‐
sequential
injectors
and
four
times
higher
for
full
group
injectors.
In
the
event
“Injection
control
mode”
parameter
is
set
to
(depending
on
the
vehicle
type)
semi
‐
sequential
or
full
‐
group,
diameter
values
of
injector
nozzles
should
correspond
to
those
indicated
in
the
chart.
2.
Ac
Gas
Synchro
diagnostic
software
‐
description
2.1.
Controller
‐
PC
connection
Upon
installing
the
STAG
‐
200,
STAG
‐
4,
STAG
‐
300
Plus,
STAG
‐
300
Premium
controller
in
the
vehicle,
connect
it
to
a
PC
with
the
AcGasSynchro
software
installed
via
an
RS
or
USB
interface
manufactured
by
AC
SA.
Prior
to
starting
the
software,
turn
the
ignition
on
(in
order
to
supply
voltage
to
the
controller);
this
is
necessary
as
the
controller
switches
to
sleep
mode
(when
it
will
not
communicate
with
the
PC)
after
app.
10
minutes
without
power
supply.
After
starting
the
software
–
provided
the
COM
port
is
selected
properly
–
the
controller
will
establish
connection
with
the
diagnostic
software
and
“Connected”
will
appear
in
the
lower
left
corner
of
the
screen.
shows
the
Parameters
window.
