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Group
28
Ignition
system
Design
and funct
ion
REX-I
General
Since it
is
not technically practical to
mary,
this function
is
the
charging
time
of
the
closes
the primary
circuit,
terrup ted.
Construction
The
power stage (1) and
vidually).
The power
st
nector
(3)
(which
is also
stage and
ignit
ion coil wilh battery voltage, grounds
tor
(5)
on
the
left is not
The power
stage
(1)
incorporates
ed on a bracket
in
the eng ine
area with the
suspension
The
ignition coil (2) is of
secondary
is
fed
to
the distributor from
order of 30
kV.
Standing
current
protection
A
functi
on
known
as
'standing curren
nition
is
switch ed
o
n
with the
-and del
ivers
a
'low' control signal
18
s
- Components
use
the
performed by a power
coil
and
the
instant at which
inducing
a high-tension voltage in the secondary each
ignition
coil
(2)
are
age receives control signals
used
to ground
the
used.
the
electrical circu
compartment,
strut
housing to
ensure
the conventional type w ith a
terminal (6).
t
protection'
engine at
rest.
to
the power
1
control unit
to regulate the relatively h igh
stage
which employs
control
delivers
it
s high-tension
assembled
by
means of screws (enabling the
from the
signal).
The
three-pole
the
coil
and supplies
its
which
control
the
power
stagelignition
that
the
heat generated is
pri
mary
and secondary
As on most modern
is
provided
10
prevent overheati
When the
engine is
st
opped,
stage,
which
responds by
current
signals from the control unit to vary both
pulse.
The
time
the primary
unit
(g
re
en lead) across
connector (4)
on
the
the rev
counter
with
the
primary current
in
coil
assembly
is
provided with a large
d
iSSipated.
wiring.
The high-tension
ignition
systems,
ng of
th
e
the
control
unit receives no
opening
the
primary
2
in
the
ignition
coil
pri·
power
stage opens
and
cu
rrent
is
units
to
be
replaced
indi-
th
e two-pole centre
con-
right
suppl
ies
the power
a signal.
The
connec-
the
ignition coil.
Mount-
contact
induced in
the
the HT
voltage is
of the
ignit
ion coil
when the
speed
signals
circui
t
of
the coil.
in-
ig-
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