Title:
EXHAUST GAS SAMPLING METHOD
Document Type and Number:
Japanese Patent JP2000221123
Kind Code:
A
Abstract:
To improve the analysis accuracy of an exhaust gas components.
A CVS(constant-volume dilution sampling device) flow rate is changed, for example, in four steps, namely 0.6, 1.0, 1.8, and 2.4 m3 per minute corresponding to a driving pattern or an exhaust gas flow rate. The sampling flow rate of a dilution gas is changed, for example, in four steps, namely 3, 5, 9, and 12 liter per minute along with the modification of the CVS flow rate. The CVS flow rate is changed within the phase of a measurement mode, so that the CVS flow rate does not exceed and exhaust gas flow rate and a dew point in a sampling bag is leveled.
Inventors:
HANASHIRO NORIYUKI
SHIBATA JUNJI
YANAGIHARA SHIGERU
YAMAWAKI HIDETA
SHIBATA JUNJI
YANAGIHARA SHIGERU
YAMAWAKI HIDETA
Application Number:
JP2342299A
Publication Date:
August 11, 2000
Filing Date:
February 01, 1999
Export Citation:
Assignee:
HONDA MOTOR CO LTD
TSUKASA SOKKEN KK
TSUKASA SOKKEN KK
International Classes:
G01N1/22; (IPC1-7): G01N1/22
Attorney, Agent or Firm:
Yu Oyama (2 outside)
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