How are BMW engine computer models classified?

1 Answers
McHadley
07/29/25 5:38pm
They are classified by the number of cylinders. Meaning of BMW engine model numbers: BMW engine models have six digits, with the first three digits typically being used. The first digit is a letter, such as B, M, N, or S, which can be considered as the engine series. The most common are the M and N series. The N series is more advanced than the M series, primarily because it is equipped with a valve lift control system, which the M series lacks. The second digit is an Arabic numeral, commonly 4, 5, 6, or 7, representing the number of cylinders in the engine. For example, 4 stands for a four-cylinder engine, 5 for a six-cylinder engine, 6 for an eight-cylinder engine, and 7 for a twelve-cylinder engine. The third digit is also an Arabic numeral, indicating the configuration level within the same series and type of engine group. It can be viewed as representing the engine's level of advancement, with higher numbers indicating higher levels. Introduction to engines: An engine is a machine that converts other forms of energy into mechanical energy, including internal combustion engines (reciprocating piston engines), external combustion engines (such as Stirling engines, steam engines, etc.), jet engines, and electric motors. For example, an internal combustion engine typically converts chemical energy into mechanical energy.
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