Inductive ignition release
The induction transmitter is a technical component in automotive engineering and is used for inductive ignition triggering . Its task is to deliver a voltage signal (ignition pulse) to trigger the ignition spark at the right moment.
Installation location
The induction generator can be installed either in the distributor or on the crankshaft. When attached to the crankshaft, either the distributor or the camshaft is sized differently to reflect the actual engine cycle as it spans two revolutions of the crankshaft.
| in the distributor | on the crankshaft | |
|---|---|---|
| firmly |
|
|
| movable |
|
|
advantages
- no sliding contacts
- no wrecking spark
functionality
In the distributor: The magnetic field generated by the permanent magnet can best spread in the metal . When the rotor rotates, the air gap between the rotor teeth and stator teeth changes, which changes the strength of the magnetic field. This change in the magnetic field induces a voltage in the coil due to the law of induction .
On the crankshaft: When the gear rotates, the environment around the permanent magnet changes, which changes the strength of the magnetic field. This change in the magnetic field induces a voltage in the coil due to the law of induction. The advantage of installing it on the crankshaft is that greater accuracy is possible. This is mainly used in Motronic.
literature
- Jürgen Kasedorf: Motor vehicle engine test. Petrol engines. 7th revised edition. Vogel Buchverlag, Würzburg 1997, ISBN 3-8023-0461-6 .
- Gert Hack: make cars faster. 11th edition. Motorbuch-Verlag, Stuttgart 1980, ISBN 3-87943-374-7 .