Engine displacement

<p>Engine displacement is the measure of the <a href="/facts/Cylinder_(engine)/XlMRcfFl">cylinder</a> <a href="/facts/Volume/aeAXCBUd">volume</a> swept by all of the pistons of a <a href="/facts/Piston_engine/ItLAxmW3">piston engine</a>, excluding the <a href="/facts/Combustion_chamber/FNqjDrN8">combustion chambers</a>. It is commonly used as an expression of an engine's size, and by extension as an indicator of the <a href="/facts/Engine_power/fPMMeyF7">power</a> (through <a href="/facts/Mean_effective_pressure/Uuf2Cl3D">mean effective pressure</a> and <a href="/facts/Rotational_speed/DAVXQgXj">rotational speed</a>) an engine might be capable of producing and the amount of fuel it should be expected to consume. For this reason displacement is one of the measures often used in advertising, as well as regulating, motor vehicles.
</p><p>It is usually expressed using the <a href="/facts/Metric_system/to24H0YK">metric</a> units of <a href="/facts/Cubic_centimetre/B8X0UHDI">cubic centimetres</a> (cc or cm3, equivalent to <a href="/facts/Litre/QKwbQz8I">millilitres</a>) or <a href="/facts/Litre/QKwbQz8I">litres</a> (l or L), or – particularly in the United States  – <a href="/facts/Cubic_inch/Har3Txcb">cubic inches</a> (CID, cu in, or in3).
</p>

Engine displacement open-in-new

Engine displacement