GB1498465A - Gas opacimeter - Google Patents

Gas opacimeter

Info

Publication number
GB1498465A
GB1498465A GB1790375A GB1790375A GB1498465A GB 1498465 A GB1498465 A GB 1498465A GB 1790375 A GB1790375 A GB 1790375A GB 1790375 A GB1790375 A GB 1790375A GB 1498465 A GB1498465 A GB 1498465A
Authority
GB
United Kingdom
Prior art keywords
gas
holes
discs
opacimeter
chamber
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
GB1790375A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1498465A publication Critical patent/GB1498465A/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
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
    • G01N21/534—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke by measuring transmission alone, i.e. determining opacity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/08—Safety, indicating, or supervising devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0085—Materials for constructing engines or their parts
    • F02F2007/0092—Transparent materials

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (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 Analysing Materials By Optical Means (AREA)

Abstract

1498465 Gas opacimeter ROBERT BOSCH GmbH 30 April 1975 [28 May 1974] 17903/75 Heading G1A A gas opacimeter comprises means for passing a light beam through a gas chamber 10 via entrance and exit holes 15 and 16 with shutters 40, 41 displaceable to at least partly open the holes, and notatable discs 21, 22, of which 21 interrupts the light beam. The exhaust pipe of an internal combustion engine is connected to inlet 13. Pump 12 supplies pure air to comparison chamber 11. The discs rotate in a direction corresponding to the gas flow, and are so close to openings 15, 16, 19, 20 that a laminar boundary gas layer appears on their surfaces. A resistance wire for measuring temperature extends the length of chamber 10. Baffles 2 and 4 are for uniform gas distribution, Interference filter 28, focusing lenses 29, 33 polarization filter 30 and apertured diaphragms 34 are arranged in the beams. A filter with a narrow ultraviolet pass range is used with white light source 25. Opaque, 31, and translucent, 32, sectors on disc 21 are respectively oposite openings 15 and 19 simultaneously and vice versa. Light conductors 35, 36 lead to sensor 37 of colour sensitivity corresponding to the human eye. An indication of opacity is derived from the difference of the signals due to chambers 10 and 11. Holes 15, 16 are open only when measuring to avoid dirt deposit on discs 21, 22. Shutters 40, 41, which are displaced perpendicularly to the gas flow by an electromagnet may be set to partly close the holes to simulate specific opacities.
GB1790375A 1974-05-28 1975-04-30 Gas opacimeter Expired GB1498465A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742425875 DE2425875A1 (en) 1974-05-28 1974-05-28 HAIR MONITORING DEVICE

Publications (1)

Publication Number Publication Date
GB1498465A true GB1498465A (en) 1978-01-18

Family

ID=5916723

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1790375A Expired GB1498465A (en) 1974-05-28 1975-04-30 Gas opacimeter

Country Status (3)

Country Link
DE (1) DE2425875A1 (en)
FR (1) FR2273274B3 (en)
GB (1) GB1498465A (en)

Also Published As

Publication number Publication date
DE2425875A1 (en) 1975-12-11
FR2273274A1 (en) 1975-12-26
FR2273274B3 (en) 1978-12-22

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Legal Events

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