Most modern gasoline and diesel-powered engines found in the cars and trucks seen on today’s roadways rely on the four-cycle-engine principles developed in the late 1800s by Nikolaus Otto, Gottlieb Daimler, and Wilhelm Maybach. While two-cycle engines exist, they didn’t fare as well as the four-cycle version for automotive applications. The four-cycle engine, or Otto-cycle as it’s often called, describes the four piston strokes (two crankshaft revolutions) required to produce power: Intake, Compression, Power, and Exhaust. The Knight sleeve
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