In the four-step compression cycle, which step comes after Expansion?

Prepare for the Exxon Mobil Basic Operating Training Test. Utilize flashcards and multiple choice questions, each equipped with hints and explanations. Get ready for your test!

Multiple Choice

In the four-step compression cycle, which step comes after Expansion?

Explanation:
In a four-stroke engine cycle, the stages occur in a fixed order: intake, compression, expansion (power), and exhaust. After the expansion stroke, the piston pushes the burnt gases out through the exhaust valve during the exhaust stroke. This clears the cylinder so the next cycle can begin with a fresh intake of air-fuel. So the step that follows expansion is exhaust, not intake—the latter would occur at the start of the next cycle.

In a four-stroke engine cycle, the stages occur in a fixed order: intake, compression, expansion (power), and exhaust. After the expansion stroke, the piston pushes the burnt gases out through the exhaust valve during the exhaust stroke. This clears the cylinder so the next cycle can begin with a fresh intake of air-fuel. So the step that follows expansion is exhaust, not intake—the latter would occur at the start of the next cycle.

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