e/Back pressure

Information
has gloss	eng: Back pressure usually refers to the pressure exerted on a moving fluid by obstructions or tight bends in the confinement vessel along which it is moving, such as piping or air vents, against its direction of flow. For example, an automotive exhaust muffler with a particularly high number of twists, bends, turns and right angles could be described as having particularly high back pressure . Back pressure, in the exhaust sense of the term, of a four-stroke engine is usually termed as being a "bad thing" for performance; however, in the interest of reducing exhaust sound to levels allowable by public noise ordinances, back pressure can be regulated using systems from simple butterfly valves to fully computer controlled units sensing pressure in the exhaust pipe itself.
lexicalization	eng: back pressure
lexicalization	eng: Backpressure
instance of	(noun) system consisting of the parts of an engine through which burned gases or steam are discharged exhaust system, exhaust

Meaning
German
has gloss	deu: Der Abgasgegendruck beschreibt den Staudruck eines bewegten Gasstroms, der durch Fluidreibung oder Geometrieveränderungen verursacht wird. Für Zweitaktmotoren ist der Abgasgegendruck ein wichtiges Funktionselement für die Zylinderfüllung, der Auslegung der Auspuffanlage kommt daher eine besondere Bedeutung zu.
lexicalization	deu: Abgasgegendruck