Why is contactless ignition better than contact?

2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42

The composition of the car includes four systems: cooling, lubrication, fuel and ignition. The failure of each of them individually leads to the complete failure of the entire car. If a breakdown is found, it must be fixed, and the sooner the better, since none of the systems fails immediately. This is usually preceded by many "symptoms".

In this article we will take a closer look at the ignition system. There are two types: contact and non-contact ignition. They differ in the presence and absence of breaking contacts in the distributor. At the moment when these contacts open, an induction current is formed in the coil, which is supplied through high-voltage wires to the candles.

Contactless ignition is devoid of these contacts. They are replaced by a switch, which, in principle, performs the same function. Initially, only a contact system was installed on domestic-made cars. VAZ began to install contactless ignition in the early 2000s. It was a good breakthrough for him. First of all, contactless ignition is more reliable, since in fact fromsystem was removed one rather vulnerable element.

Over time, car owners began to install contactless ignition on the classics themselves, as this greatly facilitated maintenance. Now the possibility of burning contacts was excluded. In addition, now they did not have to adjust the gap at the time of opening. Among other things, contactless ignition also has better current characteristics, namely, a higher frequency and voltage, which seriously reduces the wear of the spark plug electrodes. On the face - pluses in all areas of operation.

But not everything is as smooth as we would like. For example, there are times when the switch fails. If the replacement of the contact block will cost 150-200 rubles with good quality, then here the prices are 3-4 times higher. Among other things, replacing contact ignition with a non-contact one also entails replacing high-voltage wires with silicone ones, if they have not been installed earlier. Of course, you can leave the standard ones, but then breakdowns are possible, which means interruptions in the ignition and in the entire operation of the engine.

Now a little about the system itself. Power is constantly supplied to the contacts of the ignition distributor, through which it goes to the primary (small) winding of the coil. At the moment of opening the contacts, the current in the primary winding stops, the magnetic field changes, as a result of which an induction current of high frequency and voltage arises. It is he who is fed to the spark plugs.

The very replacement of the contact ignition oncontactless should not cause any difficulties, since it all comes down to unscrewing and screwing parts. Of course, after replacing the distributor itself, it will be necessary to set the ignition moment, but, firstly, it is not too difficult, and secondly, you can initially set the slider to a convenient position and remember it in order to install the switch in the same way later. You should also disconnect the battery from the circuit to avoid burns or other injuries.