Word forms: (regular plural) bore-stroke ratios
(Automotive engineering: Design and performance) The bore-stroke ratio is the ratio of bore to stroke. A ratio of 1:1 is referred to informally as square.
⇒ Your engine's bore-stroke ratio plays a vital part in the way it produces power. ⇒ The bore-stroke ratio and the cylinder volume affect the exhaust emissions and the fuel consumption of
an engine. ⇒ Piston stroke may be calculated by using a typical bore-stroke ratio of similar engines to obtain the estimated engine displacement.
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