Ignition circuit

This article deals with the ignition circuit in the gasoline engine; here the ignition circuit (blasting technology) .

An ignition circuit is a device for igniting the mixture in a gasoline engine . An ignition circuit consists of an ignition coil , high-voltage cables, an interrupter , a distributor rotor , the spark plug cable with spark plug connector and the spark plug .

functionality

When the motor vehicle is started, the gasoline engine is set in rotation by an electric motor ( starter ). At the same time the ignition circuit is closed. The distributor rotor is coupled to an output of the gasoline engine. This moves a breaker in the primary ignition circuit. The ignition coil, which is also located in the ignition circuit, builds up a magnetic field that is switched off via the interrupter and, according to Lenz's rule, a secondary induction voltagegenerated, which is many times higher than the applied battery voltage of 12 volts. The impulses per engine revolution are generated according to the number of cylinders in the engine. These high-voltage pulses are sent to the spark plugs via the distributor rotor and the high-voltage cables so that the gasoline engine starts.

In modern gasoline engines, an electronic transistor ignition is not used, rather than a distributor with a break contact . The so-called Hall sensor takes on the task of the interrupter .

literature

• Jan Drummans: The car and its technology. 1st edition, Motorbuchverlag, Stuttgart, 1992, ISBN 3-613-01288-X