WO1991008843A3 - Transducteur ultrasonique pour la mesure de courants d'air, notamment pour la mesure de la quantite d'air dans des moteurs a combustion interne - Google Patents

Transducteur ultrasonique pour la mesure de courants d'air, notamment pour la mesure de la quantite d'air dans des moteurs a combustion interne

Info

Publication number
WO1991008843A3
WO1991008843A3 PCT/DE1990/000973 DE9000973W WO9108843A3 WO 1991008843 A3 WO1991008843 A3 WO 1991008843A3 DE 9000973 W DE9000973 W DE 9000973W WO 9108843 A3 WO9108843 A3 WO 9108843A3
Authority
WO
WIPO (PCT)
Prior art keywords
measuring
ultrasonic transducer
internal combustion
combustion engines
air flow
Prior art date
Application number
PCT/DE1990/000973
Other languages
German (de)
English (en)
Other versions
WO1991008843A2 (fr
Inventor
Jena Alexander Von
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of WO1991008843A2 publication Critical patent/WO1991008843A2/fr
Publication of WO1991008843A3 publication Critical patent/WO1991008843A3/fr

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/30—Sound-focusing or directing, e.g. scanning using refraction, e.g. acoustic lenses
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/662—Constructional details

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

Un transducteur ultrasonique (1) comprend une face frontale (4) à vibrations en phase congrue et un lobe de rayonnement sans symétrie de révolution.
PCT/DE1990/000973 1989-12-19 1990-12-18 Transducteur ultrasonique pour la mesure de courants d'air, notamment pour la mesure de la quantite d'air dans des moteurs a combustion interne WO1991008843A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3941933.9 1989-12-19
DE19893941933 DE3941933C2 (de) 1989-12-19 1989-12-19 Ultraschallwandler für Luftströmungsmessung, insbesondere zur Luftmengenmessung bei Verbrennungsmotoren

Publications (2)

Publication Number Publication Date
WO1991008843A2 WO1991008843A2 (fr) 1991-06-27
WO1991008843A3 true WO1991008843A3 (fr) 1991-07-25

Family

ID=6395808

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1990/000973 WO1991008843A2 (fr) 1989-12-19 1990-12-18 Transducteur ultrasonique pour la mesure de courants d'air, notamment pour la mesure de la quantite d'air dans des moteurs a combustion interne

Country Status (2)

Country Link
DE (1) DE3941933C2 (fr)
WO (1) WO1991008843A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4330745C1 (de) * 1993-09-10 1995-04-27 Siemens Ag Ultraschallwandler mit Anpaßkörper
DE4413894C2 (de) * 1994-04-21 2002-12-12 Teves Gmbh Alfred Biegewandler in Topfform
DE19723488A1 (de) * 1997-06-05 1998-12-10 Elster Produktion Gmbh Einrichtung zum Befestigen eines Ultraschallwandlers an einem Meßgerät
DE19727877A1 (de) † 1997-06-30 1999-01-07 Bosch Gmbh Robert Ultraschallwandler
DE19811982C5 (de) * 1998-03-19 2011-02-03 Microsonic Gesellschaft für Mikroelektronik und Ultraschalltechnik mbH Ultraschall-Luftfederanordnung
DE10356114A1 (de) * 2003-11-27 2005-06-23 Endress + Hauser Flowtec Ag, Reinach Vorrichtung zur Bestimmung und/oder Überwachung des Volumen- und/oder Massendurchflusses eines Messmediums

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2704333A (en) * 1951-03-15 1955-03-15 Raytheon Mfg Co Ultrasonic vibratory devices

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3013482C2 (de) * 1980-04-08 1985-12-12 König, Beate, Dr., 8000 München Ultraschallkopf
JPS6061622U (ja) * 1983-10-04 1985-04-30 富士電機株式会社 超音波流量計
DE3832947C2 (de) * 1988-09-28 1996-04-11 Siemens Ag Ultraschall-Wandler

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2704333A (en) * 1951-03-15 1955-03-15 Raytheon Mfg Co Ultrasonic vibratory devices

Also Published As

Publication number Publication date
DE3941933A1 (de) 1991-06-20
DE3941933C2 (de) 1997-01-30
WO1991008843A2 (fr) 1991-06-27

Similar Documents

Publication Publication Date Title
FR2691912B1 (fr) Dispositif de filtrage, notamment pour filtrer l'air aspiré par un moteur à combustion interne.
DE68900207D1 (de) Abblasventil eines triebwerkverdichters.
GB2234591B (en) Mass flowmeters working on the coriolis principle
DE69017376D1 (de) Ultraschallgasmessvorrichtung.
EP0660090A3 (fr) Débitmètre d'air un type à fil chaud pour moteurs à combustion interne.
DE58901046D1 (de) Luftverdichtende, ventilgesteuerte brennkraftmaschine.
AU7957591A (en) Mass air flow meter
FR2665926B1 (fr) Dispositif d'actionnement pour soupape notamment dans un moteur a combustion interne.
WO1991008843A3 (fr) Transducteur ultrasonique pour la mesure de courants d'air, notamment pour la mesure de la quantite d'air dans des moteurs a combustion interne
FR2645935B1 (fr) Soupape d'arret a detection de debit
DE3062801D1 (en) Surface acoustic wave pressure sensor, its use in the ignition system of an internal-combustion engine and in a flowmeter
CA2178635A1 (fr) Titrage par immunofluorescence concernant la detection d'anticorps et utilisant des antigenes recombines sous forme non soluble
DE69003033D1 (de) Gasflusswinkelgeschwindigkeitsmesser.
FR2654783B1 (fr) Dispositif d'accouplement d'arbres elastique, notamment pour entrainements de moteurs diesel.
DE68901768D1 (de) Kompressorgehaeuse mit regelbarem innendurchmesser fuer eine turbomaschine.
DE69006868D1 (de) Gasturbinenluftstrahltriebwerk.
USD308871S (en) Internal combustion engine
AU2697188A (en) Internal combustion engine air cleaner inlet diffuser
USD320915S (en) Exhaust manifold alignment tool
AU3439984A (en) Combustion process for i.c. engine using a resonating air chamber in a reciprocating piston to induce closed organ pipe resonance in the combustion chamber
CA2080408A1 (fr) Norme artificielle et serums de controle, methodes de preparation et utilisation
EP0636864A3 (fr) Débitmètre à piston à déplacement positif pour la mesure de l'écoulement de l'air.
DE69006074D1 (de) Wirbelkammer-Dieselmotor.
USD335090S (en) I-beam measuring device
USD318840S (en) Marine engine exhaust unit

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): JP US

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FR GB GR IT LU NL SE

AK Designated states

Kind code of ref document: A3

Designated state(s): JP US

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FR GB GR IT LU NL SE