Principle Of Ignition Timing Advance - Honda Motorcycle Service Manual

IGNITION SYSTEMS
Principle of Ignition Timing Advance
Another function of the electrically controlled ignition system is that the ignition timing advance (or retard) is controlled elec-
trically. This system requires no mechanical advance and has no mechanical wear. The overall design eliminates periodic ad-
justments and maintenance.
This section explains the operating principles of the ignition timing advance. The ignition timing retard system operates under
the same principles.
The trigger circuit consists of a wave
A
and wave B generating circuit which converts the output from the ignition pulse
generator to wave forms A and B, and an ignition timing selector circuit.
IGNITION CONTROL MODULE
DETERMINATION
GATE CIRCUIT CIRCUIT
The ignition pulse generator produces positive and negative
voltage pulses when the rotor reluctor crosses the generator.
ROTOR IGNITION PULSE GENERATOR
OUTPUT PULSE OF IGNITION PULSE GENERATOR
Date of Issue: March. 1995
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HONDA MOTOR CO.,LTD.