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Automotive glossary: What is a Crank Shaft or Crankshaft?

Definition of Crank Shaft: In the typical combustion engine pistons are running up and down in cylinders, driven by the explosion pressure of the incinerating gasoline air mixture. This linear movement has to be transformed into a rotation movement in order drive the wheels of the vehicle and other components. The central component for this is the crankshaft. Similar to a hand crank, the crankshaft forms a rotation axis, sideways shifted from it, for every piston, there is a guiding rod, parallel to the rotation axis. At this guiding rod (called crankpin) again, there is a push rod (conrod) fixed revolvably, at whose other end the pistons are guided.

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