HONDA
TECHNICAL
FEATURES
CB40OT
1.
PULSER WAVE FORMS AND SCR TRIGGER VOLT-
2.
PULSER WAVE FORMS WHEN ADVANCE STARTS
AGEBEFOREADVANCE
The voltage on the advance pulser rises to SCR trigger
Before advance starts, only the signal from the fixed pulser
voltage faster than that of the fixed pulser. If there
is
an
is
applied to SCR gate through the diode
2.
increase in engine speed, there will be
a
corresponding
advance in timing.
SIGNAL FROM FIXED PULSER (THROUGH
D2)
SIGNAL FROM FIXED PULSER
...
SCR TRIGGER VOLTAGE
T.D.C.
-
SIGNAL FROM
ADVANCE PULSER
SIGNAL FROM FlXED PULSER (THROUGH
Dq)
3.
PULSER WAVE FORMS DURING TIMING ADVANCE
4.
PULSER WAVE FORMS AT END OF ADVANCE
With further increases in engine speed,
a
transition occurs in
The negative pulse from the fixed pulser balances the posi.
the wave form, such
as
from A to 6. That is. SCR
is
trig-
tive pulse from the advance pulser, causing the system to
gered faster to advance the ignition timing.
stop advancing timing.
COMBINED SIGNAL OF
ADVANCE AND FlXED PULSERS
SIGNAL FROM
ADVANCE PULSER
-
-
-SCR TRIGGER
ADVANCE PULSER
SIGNAL
FROM*
FIXED PULSER
-
TIME
Date of Issue: September.
1977
@
HONDA MOTOR CO., LTD.
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