Contents Section: Ignition System All sections

Ignition System - Mechanism & Function (2.5l) Subaru Impreza WRX GD/GG рестайлинг

Ignition System 3 illustrations ~106 words

IGNITION COIL

Ignition coils are made integral with an ignitor. The ignition system is of a dual-ignition-coil design, each coil causing two plugs to generate sparks simultaneously. In response to the signal from the ECM, the ignitor supplies current to an ignition coil and the ignition coil supplies high-voltage current to a pair of spark plugs (#1 and #2 or #3 and #4) simultaneously.

Scheme 41

Scheme 41: IGNITION COIL

Scheme 42

Scheme 42

SPARK PLUG

The spark plug's thread diameter is 14 mm (0.551 in) and the gap is controlled to a value between 1.0 and 1.1 mm (0.039 and 0.043 in).

Scheme 43

Scheme 43: SPARK PLUG