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GENERAL INFORMATION
1-4
TRANSlSTORlZEP IGNITION SYSTEM WITH ELECTRONIC ADVANCE
On the Model
GS?
100G,
the timing advance characteristics
of
the ignition timing have been changed from
the
previously-employed mechanical timing advance system incorporating a centrifugal advance governor
to an electronic timing advance
system.
The
introduction of this new electronic timing advance
system
minimizes fluctuations
in
the ignition timing and also has improved the timing advance performance
during high-speed operations,
When the signal rotor is rotated in the system block diagram above,
the
signal "A" is generated in the pick-
up coil.
The
thus-generated
signal will be converted to
the
signal waveform "B" a t the inside of the ignitor
unit.
Based on this "B" waveform, control is made by means of the advancing control circuit and the
closing angle control circuit. As a result, the timing advance takes place, as shown in Fig.
"C".
b
revolution
I
b +
Advanced angle
8'
revolution
1
Advanced angle
0'
High-speed
5
revolution
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