Title:
CONTINUOUS PARTICULATE MEASURING APPARATUS
Document Type and Number:
Japanese Patent JP3523354
Kind Code:
B2
Abstract:
PURPOSE: To obtain a continuous particulate measuring apparatus in which the quantity of HC compounds (SOF) and the quantity of carbon particlulates (SOOT) in particulats can be measured automatically with sufficiently high response and the quantity of particulate matter (PM) can also be measured continuously and accurately.
CONSTITUTION: The continuous particulate measuring apparatus comprises a first gas line 2 into which the exhaust gas of a diesel engine containing the PM composed of SOOT and the prestage substance thereof, i.e., HC compound (SOF), is introduced, and second and third gas lines 3, 4 arranged in parallel in which exhaust gas, i.e., the SOF in the PM evaporated through heating, is introduced. Quantity of the SOF is measured based on the difference of measurements (b) and (a) of the quantity of gaseous HC measured for the first and second gas lines 2, 3. Quantity of the SOOT is measured for the third gas line 4 using infrared light having such wavelength as not absorbed by the gas but absorbed by the SOOT. Quantity of the PM is measured based on the quantities of the SOF and the SOOT.
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Inventors:
Nakamura, Shigeo
Application Number:
JP2119695A
Publication Date:
April 26, 2004
Filing Date:
January 14, 1995
Export Citation:
Assignee:
HORIBA LTD
International Classes:
G01N1/22; G01N21/35; G01N21/3504; G01N27/00; F02B3/06; (IPC1-7): G01N21/35; G01N1/22; G01N27/00
Attorney, Agent or Firm:
藤本 英夫
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