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Description. The fully transistorized ignition system consists of a signal generator, ignitor unit (including 8-bit MICR ocomputer and CER AMIC 4MHZ V ibrator )






The fully transistorized ignition system consists of a signal generator, ignitor unit (including 8-BIT MICR OCOMPUTER and CER AMIC 4MHZ V IBRATOR), ignition coils and spark plugs. The characteristic of the ignition timing is programmed and stored in the " R OM" (R EAD ONLY MEMOR Y) of the ignitor unit. The signal generator comprises the rotor tips and pickup coil.

The signal generator is mounted at the starter clutch. The induced signal in the signal generator is sent to wave-form arrangement circuit, and CPU receives this signal and calculates the best ignition timing from the signal of ceramic vibrator and data stored in the R OM. The CPU outputs signal to the transistor of the

l.G. coil output circuit which is connected to the primary windings of the ignition coil which is turned OF F and ON accordingly, thus it induces the secondary current on the ignition coil secondary windings and produce the spark between spark plug gaps.

Ignition cut-off circuit is incorporated in the ignitor unit to prevent over-running engine. If engine r/min. reaches 13500 r/min., this circuit cuts off the ignition primary current for all spark plugs.

CAUTION:

Engine can run over 13500 r/min. without load, even if the ignition cut-off circuit is effective, and it may cause engine damage. Do not run the engine without load over 13500 r/min. at anytime.

 


 

 

Ign iter


Engi ne Side

stop switch sta nd relay

r------0/W ----O/WO/BO I00/Y

Fuse

.-----o--" " (" 1" 0'A--)•


Ignition
.-- -Igniter power

source circuit

00; k pl" g

 

1: 3

 

B/W

 

To tachometer


 

(ignition R switch

 

 

R

-J: - Battery

i (12V

_: _ 8 AH)

T

B/W


 






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