JPS57108635A - Fixed capacity type exhaust gas collecting device - Google Patents

Fixed capacity type exhaust gas collecting device

Info

Publication number
JPS57108635A
JPS57108635A JP18370280A JP18370280A JPS57108635A JP S57108635 A JPS57108635 A JP S57108635A JP 18370280 A JP18370280 A JP 18370280A JP 18370280 A JP18370280 A JP 18370280A JP S57108635 A JPS57108635 A JP S57108635A
Authority
JP
Japan
Prior art keywords
exhaust gas
pressure
difference
duct
suction pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP18370280A
Other languages
Japanese (ja)
Inventor
Nobuhisa Mori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP18370280A priority Critical patent/JPS57108635A/en
Publication of JPS57108635A publication Critical patent/JPS57108635A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
    • G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
    • G01N2001/222—Other features
    • G01N2001/2223—Other features aerosol sampling devices

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

PURPOSE:To measure accurately the absolute weight of exhaust gas constituents by driving variably a suction pump based on a signal of the difference in pressure between the upstream and downstream sides of an orifice provided in a duct so as for the difference in pressure to take a prescribed value. CONSTITUTION:In the duct between the outlet 5 of an exhaust gas induction pipe 4 and the suction pump 12 is arranged a particle-collecting filter 9 traversing the whole cross-sectional area of the duct. Moreover, the suction pump 12 is driven by a variable-speed motor 14 and further the orifice 31 is arranged in the duct below the filter 9. And, the difference in pressure between the upstream and downstream sides of the orifice 31 is detected by a differential pressure detector 34 and, based on the output signal of this detector 34, the rotational number of the variable-speed motor 14 is controlled so as for the difference in pressure to take a prescribed value. By this constitution, a large amount of particles can be collected in a short time and the absolute weight of the exhaust gas constituents can be measured accurately.
JP18370280A 1980-12-26 1980-12-26 Fixed capacity type exhaust gas collecting device Pending JPS57108635A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18370280A JPS57108635A (en) 1980-12-26 1980-12-26 Fixed capacity type exhaust gas collecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18370280A JPS57108635A (en) 1980-12-26 1980-12-26 Fixed capacity type exhaust gas collecting device

Publications (1)

Publication Number Publication Date
JPS57108635A true JPS57108635A (en) 1982-07-06

Family

ID=16140447

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18370280A Pending JPS57108635A (en) 1980-12-26 1980-12-26 Fixed capacity type exhaust gas collecting device

Country Status (1)

Country Link
JP (1) JPS57108635A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4860692A (en) * 1971-11-15 1973-08-25
JPS5130794A (en) * 1974-09-09 1976-03-16 Soichi Takemoto
JPS5550177A (en) * 1978-10-02 1980-04-11 Du Pont Radiation dosimeter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4860692A (en) * 1971-11-15 1973-08-25
JPS5130794A (en) * 1974-09-09 1976-03-16 Soichi Takemoto
JPS5550177A (en) * 1978-10-02 1980-04-11 Du Pont Radiation dosimeter

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