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This section provides an overview for ignition coils as well as their applications and principles. Also, please take a look at the list of 23 ignition coil manufacturers and their company rankings. Here are the top-ranked ignition coil companies as of December, 2024: 1.LENZ AUTOMOTIVE INC., 2.Power Coils, 3.Delphi.
Table of Contents
Ignition coils are part of the ignition system installed in gasoline engines and are transformers that provide the high voltage needed for the spark plug discharge.
In a gasoline engine, gasoline in the combustion chamber is ignited and burned by the spark plug discharge. Ignition coils supply the high-voltage electricity for the spark plugs to discharge.
Ignition coils are responsible for converting the 12-volt voltage of the lead-acid battery in the car into the high voltage needed for the spark plugs to discharge. The voltage of electricity that the ignition coils supply to the spark plugs is approximately 20,000 to 35,000 volts.
Ignition coils are used in gasoline engines in automobiles. Most gasoline engines today are reciprocating engines, which consist of three to twelve pistons moving back and forth in a cylinder, turning a single crankshaft that serves as the engine's output shaft. Ignition coils are installed in each cylinder, along with spark plugs.
However, ignition coils are not used in diesel engine vehicles, even in automobiles. In diesel engines, diesel oil, which is used as fuel, ignites itself through compression. Therefore, neither spark plugs nor ignition coils are needed.
Ignition coils consist of an iron core, called a core, around which two wires, called primary and secondary coils, are wound around it. In addition, the parts are filled with epoxy resin between each other for insulation.
First, when the driver makes an action to start the engine when starting the car, the engine control unit called ECU turns a switch called the igniter to the ON state. When the igniter is turned on, electricity is supplied to the primary ignition coils from the 12V battery in the car.
As the current supplied by the battery flows to the primary coil of the ignition coils, a magnetic flux is generated in the core, which becomes an electromagnet. The ECU then switches the igniter to the OFF state, and when the current to the primary coil stops, the magnetic flux in the core is suddenly lost. What then occurs in the secondary coil is a phenomenon called "electromagnetic induction."
Electromagnetic induction is a phenomenon in which a coil generates a high voltage when the magnetic flux passing through it changes. Due to the difference in the number of turns between the primary and secondary coils, a high voltage is generated in the secondary coil; the high voltage generated in the secondary coil is supplied to the spark plug, which discharges electricity, igniting the gasoline in the combustion chamber of the engine and causing it to burn.
Ignition coils have a limited life span. Generally speaking, the recommended replacement interval is 100,000 km. If the ignition coils deteriorate or fail over their lifetime, the following phenomena will occur in the car:
If you experience any of the above phenomena, consider replacing the ignition coils. In the case of ignition coils, it is basic to replace all cylinders at the same time.
In addition, consider replacing the spark plugs as well. Spark plugs are gradually worn out by electrical discharge. Worn spark plugs place a higher voltage demand on the ignition coils, which places a greater burden on the newly replaced ignition coils. When replacing the ignition coils, the spark plugs should also be inspected.
*Including some distributors, etc.
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Diamond Electric Mfg. Corp was established in 1937 and is headquartered in Osaka, Japan. The company is a manufacturer and global supplier of ignition coils and other automotive electronic components. Some of the products offered by Diamond Electric Mfg. Corp include ignition coils, power electronics, and sensors. These products are used for various applications such as automotive, industrial, and consumer electronics. The company holds several certifications, including the ISO 9001 and ISO 14001 certifications for its quality and environmental management systems.
Wells Engineered Products is a full-line manufacturer of many electromechanical and electronic devices needed in modern vehicles including precision engine management and power control products. The company was established in 1978 and is headquartered in Fond du Lac, Wisconsin. Its main activity is the design, development, and manufacturing of ignition coils, voltage regulators, and sensors. The company also offers custom-engineered solutions for racing applications while operating in more than 20 countries. Wells' products are used by a wide range of customers, including automotive manufacturers, racing teams, and government agencies.
Niterra North America, Inc., established in 1936 and based in Wixom, MI, USA, is a manufacturer and supplier of ignition parts and sensor components. The company's product range includes spark plugs, ignition coils, wire sets, position sensors, and pressure sensors. These products are primarily used in automotive ignition and monitoring systems. They serve industries such as automotive manufacturing, vehicle electronics, industrial machinery, and transportation. The company offers services like product design, advanced manufacturing, and quality assurance.
Standard Motor Products, Inc., established in 1919 and headquartered in Long Island City, New York, is a manufacturer and distributor of premium automotive parts used in the maintenance, service, and repair of vehicles. The company’s products are largely non-discretionary in nature and are used across all vehicle platforms including gas, diesel, and the latest hybrid and electric vehicle systems. Its vehicle control and temperature control divisions distribute more than 80,000 replacement parts to the automotive aftermarket channels. In addition to the aftermarket business, it also offers a wide range of custom-designed vehicle control and thermal management products through its engineered solutions division.
BorgWarner Inc., is an American automotive supplier headquartered in Auburn Hills, Michigan, established in 1928. The company designs and produces systems that advance the world towards eMobility, providing sustainable mobility solutions for the vehicle market. They also offer technologies and solutions for internal combustion, hybrid, and electric vehicles, catering to light, medium, and heavy-duty vehicles as well as off-highway applications. Guided by their core principles of inclusion, integrity, excellence, responsibility, and collaboration, they are moving toward achieving carbon neutrality by 2035. They operate 93 production facilities and technical systems across 22 countries and employs approximately 49,000 workers.
NGK Spark Plugs Co. Ltd, established in 1936 at Nagoya, Japan is a manufacturer of spark plugs for internal combustion and other varieties of engines used in automobiles. The company has a global clientele and manufactures new age spark plugs for automobiles that come with better ignition and reliability. The products included but not limited to are spark igniter plugs, glow plugs, glow controller and resistor cables. These spark plugs are temperature-resistant, safe, environmentally sustainable and reduce fuel consumption with their better ignition properties. They also manufacture sensors and ceramics for multiple applications such as automobiles, semiconductors and medical equipment.
Delphi Autoparts, established in 1998 and headquartered in Michigan, US, is a manufacturer that offers aftermarket solutions to fuel economy. The company offers a wide range of products, including gasoline fuel systems, diesel fuel systems, maintenance solutions, engine management, and vehicle electronics. It also provides comprehensive diagnostics, test equipment, and robust training to help repair vehicles. Its product delivers fewer hydrocarbons, particulate emissions, and increased fuel savings. Frost & Sullivan recognized the company with the 2017 North American Company of the Year Award. It serves industries such as passenger vehicles, marine vehicles, agricultural vehicles, and more.
ENRX AS, founded in 1981 as ELVA Induksjon AS and acquired by Arendals Fossekompani ASA, is a manufacturer headquartered in Skien, Norway, developing induction heating, wireless charging and power supply solutions. The company's portfolio includes induction heating equipment and systems, such as bolt expansion and brazing products. It has executed over 20,000 installations of such solutions across 80 countries. The company also offers wireless charging and contactless power supply products protected by over 1,200 patents. Its charging products are developed for heavy-duty applications and electric vehicles, whereas its power supply products are designed for floor and rail applications.
Central Automotive Products Ltd., established in 1946 and headquartered in Japan, is a supplier that provides a range of automotive components. The company specializes in automotive filtration solutions, including oil, air, and fuel filters, which improve engine performance and longevity. Additionally, it supplies engine management components like sensors and ignition coils, used for precise engine control. It serves the automotive industry, addressing the needs of both original equipment manufacturers (OEMs) and the aftermarket as its components find application in maintaining and enhancing overall vehicle performance and efficiency across various sectors.
Hella GmbH & Co., founded in 1899 and based in Lippstadt, Germany, is a manufacturer of lighting and electronic components and systems for vehicle manufacturers and other suppliers. Its products include sensors, interior lighting, headlamps, actuators, and cockpit electronics. In 1984, its annual sales went over one million deutschmarks for the first time. In 2022, it joined Faurecia to form FORVIA, and together, the two are the world’s seventh-largest automotive supplier. The aftermarket segment caters to garages and the independent aftermarket, while the special applications segment provides products to other groups like boat builders and energy suppliers.
Power Coils, established in 1995 and based in Satara, India, is a manufacturer and supplier of Electrical and Electronic Components for two- and three-wheelers. The company's product range includes Ignition Coil, Flywheel Magneto, Starter Motor, LED Lighting, and Instrument Cluster. These products address automotive electrical and electronic requirements. They serve the Motor Vehicle Manufacturing, Automotive Electricals and Electronics, Electric Vehicles, and Automotive Manufacturing industries. The company also provides scooter and bike spares, electronic fuel injection components, electric vehicle solutions, and automotive manufacturing services.
Zhejiang Jiaercheng Auto Parts Co., Ltd, established in 2000 and based in Jiaxing City, Zhejiang Province, is a manufacturer and supplier of automotive ignition coils. The company's product range includes pencil ignition coils, distributor ignition coils, and ignition coil rails & block ignition rails. These products are primarily designed to enhance the ignition systems of vehicles. They serve industries such as automotive manufacturing, vehicle maintenance, and aftermarket sales. The company also offers services like delivery time guarantees, and combined sales and engineering support for client consultations and quality assurance before delivery.
Motortech GmbH, established in Germany in 1988, is a manufacturer and supplier that specializes in crafting and supplying engine components for the global gas engine industry. It aims on key product categories such as ignition systems, including ignition leads and spark plugs for industrial gas engines. It provides control technology solutions, such as engine control units (ECUs) and i-NGEN system. Lastly, It offers gas engine accessories like gas mixer systems, air/fuel ratio control systems, and flame arrestors. The company serves industries, including power generation, oil and gas, marine, and more, helping businesses enhance engine reliability, reduce emissions, and improve fuel efficiency.
Taiwan Ignition System Co., Ltd, established in 2003 and based in Taichung, Taiwan, is an ISO-9001 certified manufacturer and supplier of automotive professional parts for the aftermarket. The company's product range includes pressure transmitter sensors, ignition control crank angle sensors, ignition coils, wire harnesses, and mass air flow meter sensors. These products are designed for automotive ignition and sensor applications. They serve industries such as automotive manufacturing, transportation, vehicle electronics, and aftermarket sales. The company provides services such as new product development, customization of solutions, continuous quality improvement, and on-time delivery.
Spectra Premium, founded in Boucherville, CA, in Boucherville, in 1989 is a manufacturer and distributor of automotive parts. The company's product portfolio includes fuel tanks, radiators and fuel modules, cooling systems, and engine management systems. The company serves industries such as Oil and Gas, Aerospace and Defense, Automotive and Transportation, Construction, and Power Generation. The company also provides services including national distribution, product selection, customized services, technical support and customer service.
Karlyn Ind. Inc., established in 1970 and based in Southfields, NY, USA, is a manufacturer and supplier of automotive suspension items and ignition cable sets. The company's product range includes Spark Plug Wire Sets, Ignition Coils, Karlyn's Steering & Suspension components, VW Beetle Ball Joints, and BREMI Ignition & Sensor Line products. These products are used in vehicle applications such as sedans, SUVs, and other vehicles. They serve industries including automotive manufacturing, automotive aftermarket, vehicle accessories, and auto parts. The company offers services such as research and development, product testing, quality control, and assembly.
Hitachi Astemo, Ltd., founded in 2009 in Tokyo, Japan, is a manufacturer and supplier of motorcycle and automotive products in the aftermarket industry. The company supplies auto products such as racing brake pads, competition carburetors, front fork repair parts, chassis systems and diagnostic tools which help to combat environmental pollution in the globe. It distributes the products to countries like America, Mexico, China, Japan, and India. The company also owns these brands: Hitachi, Toxico, Keihin, Nissin, and Huco.
DENSO Products and Services Americas, Inc., a subsidiary of DENSO Corporation, is a US-based company established in 1971 which distributes non-automotive products, as well as the remanufacturing of automotive electrical components. The company is a pioneer in the field of industrial robotics and is the largest user of small assembly robots utilized by companies worldwide. Their success can be attributed to their strong partnerships and accomplishments in the industrial robotics sector, remaining at the forefront of the industry.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | LENZ AUTOMOTIVE INC. |
11.7%
|
| 2 | Power Coils |
10.1%
|
| 3 | Delphi |
7.4%
|
| 4 | Diamond Electric Mfg. Corp |
7.4%
|
| 5 | Niterra North America, Inc. |
7.2%
|
| 6 | Wells Engineered Products |
6.2%
|
| 7 | Standard Motor Products, Inc. |
5.9%
|
| 8 | BorgWarner Inc. |
5.0%
|
| 9 | NGK SPARK PLUG CO.,LTD. |
4.8%
|
| 10 | Hitachi Astemo, Ltd. |
3.7%
|
Derivation Method
The ranking is calculated based on the click share within the ignition coil page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
6 | 37.5% |
|
Japan
|
3 | 18.8% |
|
Germany
|
2 | 12.5% |
|
India
|
1 | 6.3% |
|
China
|
1 | 6.3% |
|
Taiwan
|
1 | 6.3% |
|
Canada
|
1 | 6.3% |
United Kingdom
|
1 | 6.3% |
2 products found
2 products
Ernest Co., Ltd.
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Among the ignition system parts, the ignition coil is a part that generates the high voltage required to ignite the gasoline engine in an internal ...
