Ignition Coils; Working Principle - Segway VILLIAN SSV Series Service Manual

IGNITION COILS

The ignition coil converts the low-voltage electricity of the primary winding into the high-voltage
electricity of the secondary winding, and generates sparks through the discharge of the spark plug to
ignite the fuel-air mixture in the gas cylinder.
The ignition coil is installed on the engine, and the ignition coil installed on the engine can be seen after
disassembling the cargo box (see A in the fi gure below).

Working principle

The ignition coil is composed of a primary winding, a secondary winding, an iron core, and a shell.When
the voltage of the battery is applied to the primary winding, the primary winding is charged. Once the
ECU cuts off the primary winding loop, the charging is stopped, and high-voltage electricity is induced in
the secondary winding at the same time.
There are three pins on the low voltage side of the ignition coil:
◆ PIN 1: Connect to ECU control signal
◆ PIN 2: The pin is grounded
◆ PIN 3: Connect to the positive pole of the battery
ELECTRICAL SYSTEM
A
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