GB1518943A - Device for monitoring the composition of the exhaust emission of a combustion process - Google Patents

Device for monitoring the composition of the exhaust emission of a combustion process

Info

Publication number
GB1518943A
GB1518943A GB3935774A GB3935774A GB1518943A GB 1518943 A GB1518943 A GB 1518943A GB 3935774 A GB3935774 A GB 3935774A GB 3935774 A GB3935774 A GB 3935774A GB 1518943 A GB1518943 A GB 1518943A
Authority
GB
United Kingdom
Prior art keywords
exhaust emission
sensing element
tile
printed
heater
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.)
Expired
Application number
GB3935774A
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.)
Lucas Electrical Co Ltd
Original Assignee
Lucas Electrical Co Ltd
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 Lucas Electrical Co Ltd filed Critical Lucas Electrical Co Ltd
Priority to GB3935774A priority Critical patent/GB1518943A/en
Priority to AU84167/75A priority patent/AU497674B2/en
Priority to IT5122975A priority patent/IT1047054B/en
Priority to FR7527632A priority patent/FR2284880A1/en
Priority to DE19752540030 priority patent/DE2540030C2/en
Priority to JP10906675A priority patent/JPS5156291A/en
Publication of GB1518943A publication Critical patent/GB1518943A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Lubricants (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

1518943 Gas sensors LUCAS ELECTRICAL Ltd 18 Aug 1975 [10 Sept 1974] 39357/74 Heading GIN A device, for monitoring the composition of the gaseous exhaust emission of a combustion process, includes an insulating substrate, in the form of a ceramic tile 32, which is inert to the gaseous exhaust emission being sensed at the elevated operating temperature (700-1000‹C) of the device, a metal oxide sensing element 31 being printed on and adhered to one major surface of the tile adjacent one end of the tile to be exposed, in use, to the exhaust emission. The metal oxide is chosen so that at the operating temperature its electrical conductivity varies with the concentration of oxidizing or reducing constituents in the exhaust emission, and a heater in the form of a heating wire 42 of platinum is wound around the substrate. The ceramic tile sensing element and heater are surrounded by a hollow, heat resistant body defining a shroud which extends around the sensing element to prevent the exhaust emission flowing directly over it in use. A pair of elongated conductors 33a provide electrical connections 33b to the sensing element. The conductors being printed on and adhering to the one major surface of the tile and extending from the sensing element towards the other end of the tile. Alternatively Fig. 2 (not shown) the heater (55) is a printed resistive area on the opposite surface of the substrate from the sensing element. Or, Fig. 3 (not shown) the resistive heater area (62) and the sensing element (63) are printed spaced apart on the same side of the tile. The metal oxide may be titanium dioxide, zinc oxide, nickel oxide or gallic oxide. A preferred application of the device is in an internal combustion engine to control the fuel/air mixture in dependence on the composition of engine exhaust emission. The element 31 may be heated to a constant temperature using thermocouples adjacent the element for accurate sensing.
GB3935774A 1974-09-10 1974-09-10 Device for monitoring the composition of the exhaust emission of a combustion process Expired GB1518943A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB3935774A GB1518943A (en) 1974-09-10 1974-09-10 Device for monitoring the composition of the exhaust emission of a combustion process
AU84167/75A AU497674B2 (en) 1974-09-10 1975-08-21 Monitoring exhaust emissions
IT5122975A IT1047054B (en) 1974-09-10 1975-09-08 DETECTOR DEVICE OF THE COMPOSITION OF THE EXHAUST GAS IN COMBUSTION PROCESSES
FR7527632A FR2284880A1 (en) 1974-09-10 1975-09-09 INDICATOR DEVICE FOR THE COMPOSITION OF THE EXHAUST GASES FROM A COMBUSTION PROCESS
DE19752540030 DE2540030C2 (en) 1974-09-10 1975-09-09 Device for monitoring the composition of the exhaust gas emissions of an internal combustion engine
JP10906675A JPS5156291A (en) 1974-09-10 1975-09-10 Nenshokoteiniokeru hoshutsuhaikiseibunomonitasurusochi

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3935774A GB1518943A (en) 1974-09-10 1974-09-10 Device for monitoring the composition of the exhaust emission of a combustion process

Publications (1)

Publication Number Publication Date
GB1518943A true GB1518943A (en) 1978-07-26

Family

ID=10409117

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3935774A Expired GB1518943A (en) 1974-09-10 1974-09-10 Device for monitoring the composition of the exhaust emission of a combustion process

Country Status (6)

Country Link
JP (1) JPS5156291A (en)
AU (1) AU497674B2 (en)
DE (1) DE2540030C2 (en)
FR (1) FR2284880A1 (en)
GB (1) GB1518943A (en)
IT (1) IT1047054B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4307373A (en) 1977-06-22 1981-12-22 Rosemont Engineering Company Limited Solid state sensor element
GB2135462A (en) * 1983-02-22 1984-08-30 Autotech Developments Limited Monitoring gas composition
GB2151796A (en) * 1983-12-21 1985-07-24 Westinghouse Electric Corp A semiconductor oxide gas combustibles sensor
US5073247A (en) * 1990-03-28 1991-12-17 Robert Bosch Gmbh Measuring sensor of oxygen content of hot gas with specially shaped protective tube

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1595421A (en) * 1977-04-12 1981-08-12 Lucas Industries Ltd Device for minitoring the composition of the exhaust emission of a combustion process
JPS5937779B2 (en) * 1977-04-20 1984-09-12 株式会社豊田中央研究所 Oxygen concentration detection element
JPS5465099A (en) * 1977-10-05 1979-05-25 Ford Motor Co Thermistor temperature compensation type titania exhaust gas sensor
US4151503A (en) * 1977-10-05 1979-04-24 Ford Motor Company Temperature compensated resistive exhaust gas sensor construction
JPS5553451U (en) * 1978-10-05 1980-04-10
DE2913866C2 (en) * 1979-04-06 1987-03-12 Robert Bosch Gmbh, 7000 Stuttgart Sensor for the determination of components in flowing gases
JPS57124761U (en) * 1981-01-29 1982-08-03
JPH0542372Y2 (en) * 1987-06-05 1993-10-26
WO1994012432A1 (en) * 1992-12-02 1994-06-09 Commonwealth Scientific And Industrial Research Organisation Gas purification
DE4243732A1 (en) * 1992-12-23 1994-06-30 Bosch Gmbh Robert Sensor arrangement for determining gas components and / or gas concentrations of gas mixtures

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3479257A (en) * 1966-11-25 1969-11-18 Gen Electric Methods and apparatus for measuring the content of hydrogen or reducing gases in an atmosphere
FR1545296A (en) * 1966-11-25 1968-11-08 Gen Electric Method and device for measuring the content of hydrogen or reducing gases in an atmosphere
GB1376769A (en) * 1971-11-15 1974-12-11 Ford Motor Co Air-fuel ration sensing system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4307373A (en) 1977-06-22 1981-12-22 Rosemont Engineering Company Limited Solid state sensor element
GB2135462A (en) * 1983-02-22 1984-08-30 Autotech Developments Limited Monitoring gas composition
GB2151796A (en) * 1983-12-21 1985-07-24 Westinghouse Electric Corp A semiconductor oxide gas combustibles sensor
US5073247A (en) * 1990-03-28 1991-12-17 Robert Bosch Gmbh Measuring sensor of oxygen content of hot gas with specially shaped protective tube

Also Published As

Publication number Publication date
AU497674B2 (en) 1978-12-21
IT1047054B (en) 1980-09-10
AU8416775A (en) 1977-02-24
DE2540030C2 (en) 1985-09-26
JPS5156291A (en) 1976-05-17
DE2540030A1 (en) 1976-03-25
FR2284880A1 (en) 1976-04-09
FR2284880B1 (en) 1978-04-07

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930818