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Formulary Gas speed (mean)


Cross section of an open valve


Once one has determined the cross-section of the valve opening, one can put it into relationship with the cylinder cross-section. Assuming that exactly those gases are displaced by the piston and have left the cylinder or have been sucked in, the relationship is exactly opposite to the medium speed.

vg

A

 =

vm

Av

vm · A

vg =

Av

vm · A

Av =

vg

vg · Av

A =

vm

vg · Av

vm =

A

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2001-2014 Copyright programs, texts, animations, pictures: H. Huppertz - Email
Translator: Don Leslie - Email: lesdon@t-online.de
Here you can check your calculation:
Please enter numbers only in three of the four fields!
ACylinder
cross section area		 mm² cm² dm²
AvValve
opening area		 mm² cm² dm²
vm Average
piston speed		 m/s
vg Gas velocity m/s
Places behind the comma: 2 3 4 5

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