NGK U5160-48529 Ignition Coil 48529 Pencil Coil [Single Output Type]

【NGK U5160-48529 Ignition Coil 48529 Pencil Coil [1-Output Type]】
■Product Description
The Role of Ignition Coils
In an internal combustion engine that uses spark plugs, a high voltage of 20,000 to 35,000V is required to generate a discharge in the combustion chamber during the compression stroke. An ignition coil is a type of transformer that converts the 12V battery voltage into the high voltage necessary for the spark plug to discharge. It basically consists of a primary coil, a secondary coil, and a core (iron core), and epoxy resin is filled into the case to ensure insulation between these components.

Specifications
High Voltage Generation Principle of Ignition Coils
While there are various types of ignition coils with differences in external shape and number of output terminals, the principle of high voltage generation is the same for all of them. The primary coil is connected to the battery via an igniter (switch). First, the ECU (Engine Control Unit) turns the igniter ON, allowing current to flow through the primary coil. This generates a bundle of magnetic field lines called magnetic flux in the core (iron core) that acts as the axis of the primary coil, making the core (iron core) an electromagnet. Then, when the ECU determines the engine ignition timing, it switches the igniter to the OFF state, stopping the current to the primary coil. As a result, the core (iron core) is no longer an electromagnet, and the magnetic flux inside the core (iron core) also disappears. When the magnetic flux inside the core (iron core) suddenly disappears, a high voltage is generated in the secondary coil, which shares the same core (iron core) as its axis, due to electromagnetic induction*, according to the turns ratio of the primary and secondary coils. The high voltage generated in the secondary coil causes a spark to jump across the spark plug gap, igniting the air-fuel mixture (gasoline + air).
*A coil has the property of generating voltage when the magnetic flux passing through it changes. This voltage generation phenomenon is called electromagnetic induction.
Furthermore, since the voltage generated in a coil increases proportionally with the number of turns, ignition coils increase the winding of the secondary coil to generate high voltage.
Type: Pencil Coil [1-Output Type]
Ignition coils are directly attached to each spark plug, so spark plug wires are not necessary. This is currently the most commonly adopted type by automobile manufacturers.
Compatible Genuine Part Number: 30520-RGA-004

■Notes on Images
*Images are for illustration purposes only. Includes products with different sizes and colors. Product design and specifications are subject to change without notice. Please understand.

■Precautions
1. Always stop the engine before inspecting or replacing.
2. Please check for any oil adhesion or leakage around the plug hole. Oil adhesion or leakage can cause malfunction.
3. Perform inspection and replacement according to the service manual of each automobile manufacturer.
4. Be careful when attaching and detaching the connector. Damaging the connector part can lead to poor electrical continuity.
5. Do not use a product that has been dropped, as dropping it or subjecting it to impact may cause cracks or damage to internal components.
6. Please use the correct part number of ignition coil as stated in this document.
7. Do not use the ignition coil described in this document for any purpose other than its intended use.
8. When storing, avoid high temperatures and humidity.
9. When the engine check (MIL) lamp illuminates, be sure to clear (reset) the diagnostic (self-diagnosis/OBD) error code according to the service manual, etc., before (or after) replacing the ignition coil. Failure to clear the error code may lead to problems such as the engine check lamp not turning off.