ignition key
Automobiles and other motorized devices and machines are opened and started with an ignition key . In modern automobiles it usually contains an electronic immobilizer and a radio transmitter to operate the central locking without having to put the key in the lock.
Another meaning of the ignition key is that finger-shaped component that is unscrewed from a diesel engine before starting, in order to take an ignition fuse (e.g. a 7 mm roll of Zündfix diesel self-igniter) at the tubular hollow end and screw it back in tightly to facilitate the cold start. See: Ignition (Combustion Engine) #Diesel Engines .
functionality
To start the vehicle, the ignition key is inserted into the ignition lock . If it is turned one position to the right, the ignition is activated, which closes the ignition circuit so that the engine can be started. In addition, electrical consumers such as ventilation and power windows are activated. If it is turned one further position, the starter is activated, which in turn starts the engine.
In modern vehicles, the ignition is activated with purely electronic keys by inserting the key into a slot provided and pressing a start button instead of turning the key. Access with such a key without a beard is also called keyless go .
nature
While two keys were often required for door locks and ignition locks up until the mid-1980s, from this time on both were combined into one. The electronic form of central locking was added later as an integral part of the ignition key. In many modern vehicles, the ignition key hardly looks like a key, but has the shape of a rectangular box or a card. The vehicle can then only be opened using the integrated radio remote control. Sometimes it opens by itself when you approach the vehicle with the key.
Research is ongoing that may establish the human finger as an ignition key. Individual fingers take on different activation functions.
