Word forms: (regular plural) mean piston speeds
(Automotive engineering: Vehicle components, Engine, transmission, and exhaust) The mean piston speed is the distance traveled by a piston in a specified amount of time. ▶ piston
⇒ To make comparisons between engines of different sizes, it is common to calculate
the mean piston speed. ⇒ The mean piston speed is the piston speed averaged over one engine revolution. ⇒ A shorter stroke enables the engine to produce a higher rotating speed at a constant mean piston speed, but also increases the speed at which the piston must travel in each revolution.
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