Composition of automobile ignition system

The traditional ignition system consists of ignition power supply (battery and generator), ignition switch, ignition coil, power-off distributor, capacitor, spark plug, high-voltage conductor and low-voltage circuit.

Ignition coil is the main component to change low voltage into high voltage, so it is also called transformer.

(2) Power failure-distributor includes power failure and distributor. The task of the circuit breaker is to turn on and off the primary current and undertake the task of automatically adjusting the ignition time. The distributor consists of a distributor cover and a distributor head. The cover has side electrodes equal to the number of cylinders. When the distributor head rotates, the high-voltage electricity generated in the ignition coil can be distributed to the spark plugs of each cylinder according to the ignition sequence. The cam of the circuit breaker and the ignition head of the distributor are installed on the same shaft and driven by the gear on the camshaft of the engine, and its rotation speed is 1/20 of that of the crankshaft of the engine.

(3) The capacitor is connected in parallel with the circuit breaker contacts, which can reduce the sparks between the circuit breaker contacts, prolong the service life of the contacts and improve the secondary voltage.

④ The spark plug is installed on the cylinder head to introduce high-voltage electricity into the combustion chamber to generate sparks and ignite the mixture.

⑤ The task of the ignition switch is to control the instrument circuit, the primary circuit of the ignition system and the circuit breaker of the starter.