The total volume displaced by the pistons in all cylinders of an internal combustion engine during one stroke. It is a measure of the size and potential power of an engine.
example
Dieses Sportwagenmodell hat einen Motor mit 4,0 Litern Hubraum.
This sports car model has an engine with 4.0 liters of displacement.
Usage tips
Word composition
The word 'Hubraum' (engine displacement) is made up of 'der Hub' (the stroke, i.e. the movement of a piston) and 'der Raum' (the space). So it literally describes the space that the piston in an engine takes up through its movement.
EXAMPLE
Die Ingenieure versuchen, die Leistung bei gleichem Hubraum zu erhöhen.
The engineers are trying to increase the power with the same engine displacement.
Register
'Hubraum' (engine displacement) is a technical term, especially from the field of engines and vehicles. It is used to describe the size and performance capability of an engine.
EXAMPLE
Beim Autokauf achten viele auf den Kraftstoffverbrauch und den Hubraum.
When buying a car, many people pay attention to fuel consumption and engine displacement.
Typical use
Engine displacement is usually stated with the verb 'haben' (to have) and the unit of measurement 'Liter' (liters) or 'Kubikzentimeter' (cubic centimeters; cm³ or ccm). A typical phrase is 'einen Hubraum von X Litern haben' (to have a displacement of X liters).
EXAMPLE
Mein Motorrad hat einen Hubraum von 800 Kubikzentimetern.
My motorcycle has an engine displacement of 800 cubic centimeters.