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What is the primary function of cooling fins on air-cooled engine cylinders?

  • A

    Facilitate rapid heat transfer to the surrounding airflow by increasing the surface area.

  • B

    Cool the air around the cylinder and direct it to hotter engine parts.

  • C

    Direct airflow to specific parts that need cooling.

  • D

    Enhance airflow to improve the cooling of cylinder components.

Refer to figure.
The cooling fins increase the surface area of the engine cylinders, allowing more heat to be dissipated into the air.

This is crucial in maintaining the engine's temperature within safe operating limits.

Therefore, the primary task of cooling fins on air-cooled engine cylinders is to "facilitate rapid heat transfer to the surrounding airflow by increasing the surface area.

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