In a spark-ignition engine, gasoline is especially combustible when one part of it is atomized with about 15 parts of air.

Name: In a spark-ignition engine, gasoline is especially combustible when one part of it is atomized with about 15 parts of air.
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In a spark-ignition engine, the ideal air-fuel ratio for gasoline is approximately 14.7 parts of air to 1 part of gasoline by weight, which is close to the 15:1 ratio mentioned. This ratio allows for efficient combustion.

In a Spark-Ignition Engine, Gasoline Is Especially Combustible When One