Why does the car ignition coil burn out?

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50 Years Automotive Ignition Coil Supplier | Asia Traffic

Located in Taiwan, since 1968, Asia Traffic Supply Co., Ltd. is a leading ignition coil manufacturers in automotive and motorcycle parts industry.

ISO9001 and patented 262 types of automotive ignition coil, 52 types of motorcycle ignition coils and 134 types of electric horns for your selection. High performance ignition module with competitive price; electric horns and spark plug caps with various sizes.

Asia Traffic has been offering customers high quality car ignition coil, both with advanced technology and 50 years of experience, Asia Traffic ensures each customer's demands are met.

Why does the car ignition coil burn out?

Why does the car ignition coil burn out? Key material-Insulating layer

If your vehicle is hard to start or car engine is shaking, there are some reasons might be included.

  1. Spark plugs: It may be that the spark plug gap is too large or carbon fouling can lead to the coil overloaded, then causes overheating and a short circuit.
  2. Battery power supply: Unstable battery power supply may cause the ignition coil to burn out.
  3. Vehicle computing system: If vehicle computing system has a failure signal, please go to the repair shop for testing.

However, if we chose an ignition coil with excellent insulation quality, the aging damages of ignition coil can be reduced when these situations happened.

Product Category:

DAIHATSUFORDHONDA
HYUNDAIINFINITIISUZU
KIAMAZDAMITSUBISHI
NISSANSUZUKITOYOTA
VOLKSWAGENEUROPEAN VEHICLEAMERICAN VEHICLE

Ignition Coil Construction

Basically ignition coil comprises the iron core, the primary coil, and secondary coil. They are assembled inside the coil case, then filled with an insulating material.

Ignition Coil Construction

The main cause of ignition coil burnout

The main cause of ignition coil burnout is the insulating material aging. For example, when the ignition coil high voltage can’t output smoothly, the current turbulence in coil will occur, causing the temperature to rise rapidly and accelerate the insulating material aging. Therefore, it is possible to cause the voltage to break down the insulating layer, then the ignition coil burns and a short circuit occurs.

Ignition Coil Burnout

Ignition coil insulation method

1. Plastic molding type (referred to as PP plastic molding)

The coil will be saturated with varnish for a period of time after the preliminary assembly, then dried and hardened after being taken out. The inside of coil is insulated by varnish filled. The process is not completed until coil is coated by the plastic injecting into a mould. In the early days, plastic molding type ignition coil was mostly used for motorcycles.

2. Asphalt filled type

The coil is placed in a metal can case and filled with asphalt around the coil to completely cover it. Asphalt filled type ignition coil is the earliest insulation method for making automotive ignition coils.

3. Oil filled type

As same as the asphalt filled type, except that asphalt is changed to insulating oil as the insulating layer. The insulation resistance and permeability is excellent. However, the disadvantage of oil filled type ignition coil is that polychlorinated biphenyl is poisonous, so oil filled type ignition coil was banned in Taiwan since 1980.

4. Epoxy resin filled type

The coil is housed in a resinous case and filled with epoxy resin as an insulating material. Epoxy resin filled type ignition coil is currently the mainstream of ignition coils for both automobiles and motorcycles.  READ MORE

Asia Traffic Supply Company will perform the following tests in order to provide ignition coils with excellent insulation quality. How do the endurance tests of ignition coil insulating materials make sure if the resin has reached the insulation endurance standard?

Purpose: To test the insulation capacity of 2.0mm thickness resin

  1. Resin test piece size: diameter 120mm, thickness 2.0mm
    Ignition Coil Insulation Endurance Test
  2. Insulation endurance test machine
    Test conditions: 1. Test voltage: 40kV. 2. Test time: 1min. Ignition Coil Insulation Endurance Test
  3. Testing
    Ignition Coil Insulation Endurance Test
  4. Oscilloscope screen: Voltage 40.2kV
    Ignition Coil Insulation Endurance Test

    Results: Passed the insulation endurance test and no breakdown voltage through insulating resin. 2.0mm thickness resin can withstand 40kV high voltage.

    Why does the car ignition coil burn out 1 Why does the car ignition coil burn out 2
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