Hyundai i-30: Ignition System / Description and operation

The ignition coil is a kind of small transformer that transforms the battery voltage to 30 kV or more to create a spark in the spark plug gap in the cylinder.

The igniter embedded in the ignition coil includes the power transistor and it is an electronic switch whose electric current is controlled by the Engine Control Module (ECM) signal.

The ignition timing is controlled by the ECM and the standard ignition timing data depending on the engine operating condition is stored in the ECM memory.

The engine operating conditions (speed, load, warm-up state, etc.) are detected by the various sensors.

Based on these sensor signals and the ignition timing data, when the ECM applies the ignition signal to the ignition coil for a certain period of time, igniter is energized and current flows and rises gradually to the primary coil and the magnetic filed is produced.

When the current in the primary coil is cut off by the ignition signal of the ECM, the rapid change of the magnetic flux by the mutual induction action is induced to the secondary coil and high voltage is generated depending on the coil winding ratio.

This high voltage generated from the secondary coil is caught in the spark plug gap and discharges as the electric field is destroyed to generate a spark.

Ignition System

..

Troubleshooting

..

Other information:

Hyundai i30 (PD) 2018-2025 Owner's Manual: Detecting vehicles

The sensor may be limited when: The radar sensor or camera is blocked with a foreign object or debris Inclement weather such as heavy rain or snow obscures the field of view of the radar sensor or camera There is interference by electromagnetic waves There is severe irregular reflection from the radar sensor The radar/camera sensor recognition is limited The vehicle in front is too small to be detected (for example a motorcycle or a bicycle, etc...

Hyundai i30 (PD) 2018-2025 Service Manual: Camshaft Position Sensor (CMPS)

Description and operation Description Camshaft Position Sensor (CMPS) is a hall sensor and detects the camshaft position by using a hall element. It is related with Crankshaft Position Sensor (CKPS) and detects the piston position of each cylinder which the CKPS can't detect...