Figure 15-17. Solid State Ignition System.

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Figure 15-16. Transistorized Point Ignition

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TM-9-8000 Principles of Automotive Vehicles Manual

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Capacitive-Discharge Ignition

TM 9-8000

Figure 15-17. Solid State Ignition System.

through the pickup coil. This voltage is carried from the

completed. The magnetic field again is built up in the

pickup coil to the control unit by the distributor leads.

primary windings of the Ignition coil, where it waits for

When the pulse enters the control unit, it signals the

another signal from the pickup unit.

control unit to interrupt the Ignition primary circuit. This

causes the primary circuit to collapse and begins the

(4) The buildup and collapse of the primary

induction of the magnetic lines of force from the primary

circuit takes place very rapidly. This is brought about by

side of the coil into the secondary side of the coil. This

transistor action and the speed of the reluctor.

induction provides the required voltage to Jump the

spark plug gap and Ignite the air-fuel mixture In the

(5) The advantages of an electronic Ignition

system are that the transistors in the control unit can

make and break the primary circuit much faster than

(3) As the tooth on the reluctor moves away

conventional Ignition points. Higher primary voltages can

from the pickup unit, the primary circuit is again

be used because this system

TA233597

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