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Naturally aspirated engine

Typical airflow in a four-stroke engine:
In stroke #1, the pistons suck in (aspirate) air to the combustion chamber through the opened inlet valve.

A naturally aspirated engine, also known as a normally aspirated engine, and abbreviated to N/A or NA, is an internal combustion engine in which air intake depends solely on atmospheric pressure and does not have forced induction through a turbocharger or a supercharger.[1]

  1. ^ "What is a normally aspirated engine?". ask.cars.com. 2008-09-02. Archived from the original on 2013-06-22. Retrieved 2015-10-18.

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