Patent · US Expired

Gas sampling method and dilution tunnel therefor

US5410907A · kind A · utility

25Cited by
16References
20Claims
0Family size

Inventors

Key dates

Filing dateAug 25, 1993
Grant dateMay 2, 1995
Priority date—
Expiry dateAug 25, 2013

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01N33/004
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

Emission gasses from an engine exhaust pipe are collected through an inlet of a dilution tunnel which is an elongated, hollow tube. The inlet is spaced from the exhaust pipe to also admit surrounding air. The air and emissions are mixed in the tunnel by a screen in the tunnel. A probe in the tunnel diverts a portion of the mixture to gas analyzers. Prior to analysis the mixture may be condensed, filtered or otherwise processed.

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