IGNITION SYSTEM
These gensets are equipped with an electronic igni-
tion system consisting of a rotor, module, coil, ca-
pacitor, spark plugs and associated wiring. Energy
for ignition is supplied by the 12 volt cranking bat-
tery.
Rotor
See Figure 6-5.
The
ignition rotor is keyed to the en-
gine crankshaft.
The
ends have opposite magnetic
polarity (north and south). One pole switches on the
ignition module and the other pole switches it off,
once each revolution of the crankshaft.
The
rotor
should not normally require replacement.
Module
The
ignition module is secured and grounded to the
generator-engine adaptor
by
two
cap screws. It is
an electronic switch in the primary circuit
of
the igni-
tion coil. See
Section
11.
Wiring Diagrams for the
appropriate wiring diagram. It is switched on and off
once each revolution by the rotor. The module con-
tains no serviceable parts and should not normally
require replacement.
Coil
See Figure 6-6.
The
ignition coil is a transformer
that fires the spark plugs
at
roughly 20,000 volts
each revolution when the ignition module opens the
primary circuit causing the coil field
to
collapse.
lA CAUTION I The leads connected
at
the
low
volt-
age terminals
of
the
ignition
coil
(Figure 6-6)
should
not
be routed
so
as
to
pass
between the
high
voltage terminal posts. Otherwise, false
signals can be induced in the
low
voltage wires,
leading
to
erratic operation.
Capacitor
The
ignition capacitor is secured and grounded to
the top of the generator-engine adaptor
by one cap
screw.
The
pig tail is connected to the positive ( +)
low voltage terminal
of
the ignition coil.
6-10
ENGINE-GENERATOR
ADAPTOR
IGNITION
MODULE
FIGURE 6-5. IGNITION ROTOR AND MODULE
HIGH VOLTAGE
TERMINALS
PRIMARY
WINDING
FIGURE 6-6. IGNITION COIL
To Next Page
Loading...
Need help?
General
