Patent · US Expired

Method for measuring the control cross section area of a nozzle

US5207089A · kind A · utility

10Cited by

4References

10Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Jurgen Abt · Bechhofen, DE
Sybille Stumpf · Markgröningen, DE
Ulrich Kuhn · Renningen, DE
Werner Banzhaf · Sindelfingen, DE
Gerhard Felten · Summerville, US
Gerold Lemperle · Leinfelden, DE
Michael Specker · Blaichach, DE

Key dates

Filing date	Jul 11, 1991
Grant date	May 4, 1993
Priority date	—
Expiry date	Jul 11, 2011

Classification

Technology area (CPC G)Physics
CPC primaryG01B13/10
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The method for measuring the cross-sectional area of a nozzle by a pneumatic through-flow method with supercritical pressure ratio measures the volume flow flowing through the nozzle on its input side by a differential pressure measurement at a resistance distance through which a laminar flow passes. Deviations of the temperature of the test medium from a reference value are determined by a temperature sensor and accounted for via a correction factor.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.