Attention! The voltage generated by a non-contact ignition system is significantly higher than that produced by a conventional ignition system. Be extremely careful when operating the system with the ignition on. People with implanted cardiac pacemakers should not touch ignition circuits, components, or diagnostic equipment.
Cars with 4-cylinder engine
1. The ignition system is combined with the fuel injection system, and together they constitute an engine management system with a common electronic module (see related section). The ignition system consists of a control unit and a knock sensor.
2. The control unit has four outputs. In fact, it consists of two separate ignition coils, each of which serves two cylinders (one for cylinders #1 and 4 and the other for cylinders #2 and 3). Ignition coils work on the principle «idle spark», that is, the spark in the spark plugs jumps twice for each engine cycle, on the compression stroke and on the exhaust stroke. The electronic control module uses signals from various sensors to calculate the required ignition timing and ignition coil charging time.
3. The knock sensor is installed on the cylinder block and notifies the electronic module of the impending detonation. The sensor is sensitive to vibration and detects knocking that occurs at the time of early ignition. The knock sensor sends an electrical signal to the electronic module, which in turn advances the ignition until knock stops. Vehicles with a 6-cylinder engine
4. See information in points 1-3, but remember that these engines have two knock sensors (one for each cylinder block) and the ignition control unit has six outputs and consists of three separate coils, each serving two cylinders.
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