{"product_id":"ngk-u5027-48530","title":"NGK U5027-48530 Ignition Coil 48530 Pencil Coil [1-output type]","description":"\u003cp\u003e【NGK U5027-48530 Ignition Coil 48530 Pencil Coil [1-Output Type]】\n\u003cbr\u003e■Product Description\n\u003cbr\u003eRole of the Ignition Coil\n\u003cbr\u003eIn an internal combustion engine using spark plugs, a high voltage of 20,000 to 35,000V is required to discharge electricity in the combustion chamber during the compression stroke. An ignition coil is a type of transformer that converts 12V battery voltage into the high voltage required for spark plug 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.\u003c\/p\u003e\n\n\u003cp\u003eSpecifications\n\u003cbr\u003ePrinciple of High Voltage Generation in Ignition Coils\n\u003cbr\u003eWhile there are various types of ignition coils, differing 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), which is the axis of the primary coil, and the core becomes an electromagnet. Subsequently, 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 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).\n\u003cbr\u003e*A coil has the property of generating voltage when the magnetic flux passing through it changes. This voltage generation phenomenon is called electromagnetic induction.\n\u003cbr\u003eFurthermore, since the voltage generated in a coil increases in proportion to the number of turns, ignition coils increase the winding of the secondary coil to generate high voltage.\n\u003cbr\u003eType: Pencil Coil [1-Output Type]\n\u003cbr\u003eIgnition coils are mounted directly on each spark plug, so spark plug wires are not required. This is currently the most commonly adopted type by automotive manufacturers.\n\u003cbr\u003eCompatible Genuine Part Number: 90919-02240\u003c\/p\u003e\n\n\u003cp\u003e■Notes on Images\n\u003cbr\u003e*Images are for illustration purposes only. They may include products of different sizes or colors. Product designs and specifications are subject to change without notice. Please be aware of this.\u003c\/p\u003e\n\n\u003cp\u003e■Precautions\n\u003cbr\u003e1. Always turn off the engine before inspection or replacement.\n\u003cbr\u003e2. Please check for any oil adhesion or leakage around the plug hole. Oil adhesion or leakage can cause malfunctions.\n\u003cbr\u003e3. Perform inspection and replacement according to the service manual of each automobile manufacturer.\n\u003cbr\u003e4. Please handle the connector carefully when attaching and detaching. Damaging the connector part can lead to poor electrical continuity.\n\u003cbr\u003e5. Do not use products that have been dropped, as dropping or impacting them may cause cracks or damage to internal components.\n\u003cbr\u003e6. Please use the correct ignition coil part number as specified in this document.\n\u003cbr\u003e7. Do not use the ignition coil mentioned in this document for any purpose other than its intended use.\n\u003cbr\u003e8. When storing, avoid high temperatures and humidity.\n\u003cbr\u003e9. When the engine check (MIL) lamp illuminates, after replacing (or before replacing) the ignition coil, always clear (reset) the diagnostic (self-diagnosis\/OBD) error codes according to the service manual or similar. Failure to clear the error codes may lead to problems such as the engine check lamp not turning off.\u003c\/p\u003e","brand":"日本特殊陶業(NGK)","offers":[{"title":"Default Title","offer_id":46119122501867,"sku":"ngk-u5027-48530","price":7153.0,"currency_code":"JPY","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1021\/9499\/files\/ngk-ignition_c0a7452e-0cb0-43da-9761-13555174c9a2.jpg?v=1737444953","url":"https:\/\/bikeman.jp\/en\/products\/ngk-u5027-48530","provider":"バイクマン","version":"1.0","type":"link"}