{"product_id":"ngk-u5098-48528","title":"NGK U5098-48528 Ignition Coil 48528 Pencil Coil [1-Output Type]","description":"\u003cp\u003e【NGK U5098-48528 Ignition Coil 48528 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 the 12V battery voltage into the high voltage necessary 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 with different external shapes and numbers of output terminals, their high-voltage generation principle is all the same. 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 it's time for engine ignition, 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) 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 winding 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, initiating the combustion of 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 windings, ignition coils increase the windings of the secondary coil to generate high voltage.\n\u003cbr\u003eType: Pencil Coil [1-Output Type]\n\u003cbr\u003eIgnition coils are directly attached to each spark plug, eliminating the need for plug wires. This is currently the most commonly adopted type by automobile manufacturers.\n\u003cbr\u003eCompatible Genuine Part Number: 30521-PWA-S01\u003c\/p\u003e\n\n\u003cp\u003e■Image Disclaimer\n\u003cbr\u003e*Images are for illustration purposes only. They may include products of different sizes or colors. Product design and specifications are subject to change without notice. Please understand.\u003c\/p\u003e\n\n\u003cp\u003e■Precautions\n\u003cbr\u003e1. Always inspect and replace components after stopping the engine.\n\u003cbr\u003e2. Please check for oil adhesion or leaks around the spark plug holes. Oil adhesion or leaks can cause malfunctions.\n\u003cbr\u003e3. Please perform inspections and replacements according to the service manual of each automobile manufacturer.\n\u003cbr\u003e4. Please handle connector attachment and detachment carefully. Damaging the connector part can lead to poor conductivity and other issues.\n\u003cbr\u003e5. Do not use products that have been dropped, as dropping them or subjecting them to impact can cause cracks or damage to internal components.\n\u003cbr\u003e6. Please use the correct part number ignition coil as specified in this document.\n\u003cbr\u003e7. Do not use the ignition coils in this document for any purpose other than their intended use.\n\u003cbr\u003e8. When storing, avoid high temperatures and high humidity.\n\u003cbr\u003e9. If the engine check (MIL) lamp illuminates, be sure to clear (reset) the error code in the diagnostic (self-diagnosis\/OBD) system 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 remaining lit.\u003c\/p\u003e","brand":"日本特殊陶業(NGK)","offers":[{"title":"Default Title","offer_id":46119124304107,"sku":"ngk-u5098-48528","price":5578.0,"currency_code":"JPY","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1021\/9499\/files\/ngk-ignition_37910b6d-479b-4d53-9ac8-ceb2424c047a.jpg?v=1737445037","url":"https:\/\/bikeman.jp\/en\/products\/ngk-u5098-48528","provider":"バイクマン","version":"1.0","type":"link"}