IGNITION COIL SPECIFICATIONS

The ignition coil is a crucial component of the automotive engine’s ignition system, responsible for converting low-voltage electrical energy into high-voltage electrical energy to generate a spark to ignite the air-fuel mixture. Its specifications generally include the following aspects:

Electrical Specifications:

     ▶  Primary Voltage: Typically 12 volts (car battery voltage).

     ▶  Secondary Voltage: Can generate up to tens of thousands of volts (e.g., 20,000 to 40,000 volts).

     ▶  Primary Resistance: Generally ranges from 0.3 to 1.5 ohms.

     ▶  Secondary Resistance: Usually between 5,000 and 15,000 ohms.

Physical Dimensions:

     Length, width, and height vary depending on the type of ignition coil and the vehicle model.

     The location and size of mounting holes must also match with the vehicle’s mounting bracket.

Operating Environment:

     ▶ Temperature Range: Typically needs to withstand temperatures from -40°C to 150°C.

     ▶ Humidity: Must adapt to varying humidity levels.

Interface and Connection Types:

 Types of connectors and plugs of the ignition coil to ensure compatibility with the vehicle’s ignition system.

Types:

     ▶ Single Coil: Used in older systems, one coil for the entire engine.

     ▶ Wasted Spark Coil: Used in some multi-cylinder engines, one coil shared between a pair of cylinders.

     ▶ Coil-on-Plug (COP): Common in modern vehicles, with an individual coil for each cylinder, mounted directly on the spark plug.

Each type and specification of ignition coil has its specific advantages and requirements in different applications. The choice of ignition coil should be based on the vehicle’s needs and the manufacturer’s specifications.