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About this topic: Engine Basics and the Four-Stroke Cycle
Engine basics cover the four-stroke cycle (intake, compression, power, exhaust), the parts that make it happen — pistons, valves, crankshaft, camshaft — and the terms used to describe engines, such as displacement and compression ratio. This is one of 21 Auto Information questions on engine basics and the four-stroke cycle, each with a full explanation on a single study page.
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Engine Basics and the Four-Stroke Cycle