Manufacturer Part Number:12138643360
The BMW B38, B48, and B58 engines are part of BMW’s modular engine family, utilizing a similar design across different configurations. Here’s a brief description of the ignition coils used in these engines:
- Ignition Coil Design: These engines use a coil-on-plug (COP) ignition system, where each cylinder has its own ignition coil mounted directly on top of the spark plug. This design improves efficiency and performance by ensuring a strong and direct spark.
- Functionality: The ignition coils convert the battery’s low voltage (12V) into the high voltage (typically around 20,000–45,000 volts) needed to create a spark at the spark plug, igniting the air-fuel mixture in the combustion chamber.
- Components: Each ignition coil typically consists of:
- A primary winding that receives low voltage from the battery.
- A secondary winding that generates high voltage.
- A housing to protect the internal components and to provide a secure connection to the spark plug.
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