NGK U5162-48532 Ignition Coil 48532 Pencil Coil [1-output type]

【NGK U5162-48532 Ignition Coil 48532 Pencil Coil [1-Output Type]】
■Product Description
The Role of the Ignition Coil
In an internal combustion engine that uses spark plugs, a high voltage of 20,000 to 35,000V is required to discharge electricity in the combustion chamber during the compression stroke. The 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 parts.

Specifications
High Voltage Generation Principle of Ignition Coils
There are various types of ignition coils, differing in appearance, number of output terminals, etc., but the high voltage generation principle 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, causing current to flow through the primary coil. This generates a bundle of magnetic field lines called magnetic flux in the core (iron core) that serves as the axis of the primary coil, turning the core into 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) ceases to be 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*, in proportion to the turns ratio of the primary coil and the secondary coil. The high voltage generated in the secondary coil causes a spark to jump across the gap of the spark plug, 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.
Note that the voltage generated in a coil increases in proportion to the number of turns, so ignition coils increase the winding of the secondary coil to generate high voltage.
Type: Pencil Coil [1-Output Type]
Ignition coils are mounted directly on each spark plug, so spark plug wires are not necessary. This type is currently the most commonly adopted by automotive manufacturers.
Compatible Genuine Part Number: 30420-PWC-S01

■Image Disclaimer
*Images are for illustration purposes only. Products may include variations in size and color. Product design and specifications are subject to change without notice. Thank you for your understanding.

■Precautions
1. Always stop the engine before inspecting or replacing parts.
2. Please check for any oil adherence or leakage around the plug hole. Oil adherence or leakage can cause malfunctions.
3. Perform inspection and replacement according to the service manual of each automobile manufacturer.
4. Please handle the connector carefully when attaching and detaching it. Damaging the connector can lead to poor electrical conductivity.
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 ignition coil as specified 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.