Ignition coils

IGNITION COILS

(Marelli Bae 920A)

The coils are fastened by means of a bracket to the camshaft covers and are closed magnetic loop type. They are formed from a layered pack, whose central core (broken by a narrow gap) carries both windings.

The windings are placed in a moulded plastic container embedded in epoxy resin, which gives them exceptional dielectric properties. Because the primary winding is so close to the magnetic core, little magnetic flux is lost and coupling with the secondary winding is maximised.

1. HT socket for cylinder no. 1 spark plug
2. HT socket for cylinder no. 2 spark plug
3. HT socket for cylinder no. 3 spark plug
4. HT socket for cylinder no. 4 spark plug
5. LT socket for ECU connection
6. Primary circuit
7. Gap
8. Secondary circuit

Wiring connector

NOTE The numbers in boxes indicate the corresponding control unit pins.