Volumetric ratio determination method, e.g. for IC engine compression ratio

The method provides the volumetric ratio between two volumes, V1,V2, with the same leakage cross-section by successively filling each of the volumes with the same gas and measuring the gas pressure at the beginning (p10,p20) and the gas pressure at the end (p1(t1),p2(t2)) of a defined pressure reduc...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	BENZ, MICHAEL., 71394 KERNEN, DE
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	MEASURING MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL METERING BY VOLUME PHYSICS TESTING
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Beschreibung
Zusammenfassung:	The method provides the volumetric ratio between two volumes, V1,V2, with the same leakage cross-section by successively filling each of the volumes with the same gas and measuring the gas pressure at the beginning (p10,p20) and the gas pressure at the end (p1(t1),p2(t2)) of a defined pressure reduction interval (t1,t2) for each volume. The measured initial and final pressure values for both volumes are inserted in a given equation for calculation of the volumetric ratio. The equation is: V1/V2 = t1/t2ln(p2(t2)/p20)'/ln(p1(t1)/p10).