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The 27 pages that link to Four-stroke engine, each with the reason it gives.

• Engine knockingRelated: Knock risk rises during the compression and power portions of its cycle.

• Benz Patent-MotorwagenRelated: Benz’s single-cylinder engine used this cycle to turn fuel combustion into motion.

• Fuel injectionRelated: Its repeating strokes define when injected fuel can mix and burn.

• Yamaha Motor CompanyRelated: Four-stroke engines power many Yamaha motorcycles and marine products.

• MinibikeRelated: Four-stroke designs are common in modern recreational minibikes.