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Scavenging is the process of replacing the exhaust gas in a cylinder of an internal combustion engine with the fresh air/fuel mixture (or fresh air, in the case of direct-injection engines) for the next cycle. If scavenging is incomplete, the remaining exhaust gases can cause improper combustion for the next cycle, leading to reduced power output. The scavenge or scavenging port refers to that port through which clean air enters the cylinder, the exhaust port through which it leaves.

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  • Scavenging (de)
  • Scavenging (engine) (en)
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  • Unter Scavenging (dt. ausräumen) versteht man die Betriebsweise eines Hubkolbenmotors, bei der sich die Öffnungszeiten von Einlass- und Auslassventil teilweise überschneiden. Dadurch spült ein Teil der angesaugten kalten Frischluft das im Zylinder befindliche heiße Abgas in den Abgaskrümmer, wodurch sich die Füllung im Vergleich zum konventionellen Betrieb wesentlich verbessert. Durch den erhöhten Massenstrom im Abgasstrang verbessert sich das Ansprechverhalten des Turboladers insbesondere bei niedrigen Drehzahlen. Scavenging trägt also dazu bei, das so genannte „Turboloch“ zu verringern. (de)
  • Scavenging is the process of replacing the exhaust gas in a cylinder of an internal combustion engine with the fresh air/fuel mixture (or fresh air, in the case of direct-injection engines) for the next cycle. If scavenging is incomplete, the remaining exhaust gases can cause improper combustion for the next cycle, leading to reduced power output. The scavenge or scavenging port refers to that port through which clean air enters the cylinder, the exhaust port through which it leaves. (en)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/Diesel_engine_uniflow.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Two-stroke_deflector_piston_(Autocar_Handbook,_13th_ed,_1935).jpg
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  • Unter Scavenging (dt. ausräumen) versteht man die Betriebsweise eines Hubkolbenmotors, bei der sich die Öffnungszeiten von Einlass- und Auslassventil teilweise überschneiden. Dadurch spült ein Teil der angesaugten kalten Frischluft das im Zylinder befindliche heiße Abgas in den Abgaskrümmer, wodurch sich die Füllung im Vergleich zum konventionellen Betrieb wesentlich verbessert. Durch den erhöhten Massenstrom im Abgasstrang verbessert sich das Ansprechverhalten des Turboladers insbesondere bei niedrigen Drehzahlen. Scavenging trägt also dazu bei, das so genannte „Turboloch“ zu verringern. (de)
  • Scavenging is the process of replacing the exhaust gas in a cylinder of an internal combustion engine with the fresh air/fuel mixture (or fresh air, in the case of direct-injection engines) for the next cycle. If scavenging is incomplete, the remaining exhaust gases can cause improper combustion for the next cycle, leading to reduced power output. Scavenging is equally important for both two-stroke and four-stroke engines. Most modern four-stroke engines use crossflow cylinder heads and valve timing overlap to scavenge the cylinders. Modern two-stroke engines use either Schnuerle scavenging (also known as "loop scavenging") or uniflow scavenging. The scavenge or scavenging port refers to that port through which clean air enters the cylinder, the exhaust port through which it leaves. (en)
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