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WO2008028898A3 - Method for measuring air mass and air mass sensor - Google Patents

Method for measuring air mass and air mass sensor Download PDF

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Publication number
WO2008028898A3
WO2008028898A3 PCT/EP2007/059211 EP2007059211W WO2008028898A3 WO 2008028898 A3 WO2008028898 A3 WO 2008028898A3 EP 2007059211 W EP2007059211 W EP 2007059211W WO 2008028898 A3 WO2008028898 A3 WO 2008028898A3
Authority
WO
WIPO (PCT)
Prior art keywords
air mass
tube
manner
transducer
measuring
Prior art date
Application number
PCT/EP2007/059211
Other languages
German (de)
French (fr)
Other versions
WO2008028898A2 (en
Inventor
Rudolf Bierl
Martin Lesser
Andreas Meyer
Frank Steuber
Original Assignee
Siemens Vdo Automotive Ag
Rudolf Bierl
Martin Lesser
Andreas Meyer
Frank Steuber
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 Vdo Automotive Ag, Rudolf Bierl, Martin Lesser, Andreas Meyer, Frank Steuber filed Critical Siemens Vdo Automotive Ag
Publication of WO2008028898A2 publication Critical patent/WO2008028898A2/en
Publication of WO2008028898A3 publication Critical patent/WO2008028898A3/en

Links

Classifications

    • 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)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

The present invention relates to a method for measuring air mass and to an air mass sensor. In order to provide an inexpensive and reliable method as well as a corresponding apparatus for measuring flow, it is proposed to construct an air mass sensor having two ultrasonic transducers 3, 4, which are arranged in a tube 2, in such a manner that the ultrasonic transducers 3, 4 are arranged at a short distance l, L from one another and essentially parallel to one another at an angle α which is oblique with respect to the centre axis of the tube M in the region of the tube wall 5, and a system 6 having at least one mirror or reflector 7, 8 is arranged in such a manner that the ultrasonic wave 9 emitted by the respective transmission transducer 3, 4 is reflected to the second transducer 3, 4 which is used as the reception transducer, wherein a tube 11 is arranged in the region of one of the two sound transducers 3, 4 in such a manner that part of the transmission path of the ultrasonic wave 9 is guided in this tube 11.
PCT/EP2007/059211 2006-09-05 2007-09-04 Method for measuring air mass and air mass sensor WO2008028898A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610041530 DE102006041530B4 (en) 2006-09-05 2006-09-05 Method for air mass measurement and air mass sensor
DE102006041530.2 2006-09-05

Publications (2)

Publication Number Publication Date
WO2008028898A2 WO2008028898A2 (en) 2008-03-13
WO2008028898A3 true WO2008028898A3 (en) 2008-06-05

Family

ID=39078893

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/059211 WO2008028898A2 (en) 2006-09-05 2007-09-04 Method for measuring air mass and air mass sensor

Country Status (2)

Country Link
DE (1) DE102006041530B4 (en)
WO (1) WO2008028898A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009045620A1 (en) 2009-10-13 2011-05-19 Robert Bosch Gmbh Ultrasonic flow sensor for detecting a flow of a fluid medium

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19549162A1 (en) * 1995-01-31 1996-08-01 Danfoss As Ultrasonic flow meter
DE19934212A1 (en) * 1998-07-24 2000-02-17 Inst Francais Du Petrole Method and device for measuring the flow rate of a fluid stream
EP1065474A2 (en) * 1999-07-01 2001-01-03 Hydrometer GmbH Ultrasonic flow counter with sound deviation
EP1096236A2 (en) * 1999-09-06 2001-05-02 Iskrameco, Merjenje in upravljanje energije d.d. Ultrasonic flowmeter for fluids
US6343511B1 (en) * 1995-06-07 2002-02-05 Panametrics, Inc. Ultrasonic path bundle and systems

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1016750B (en) * 1974-08-01 1977-06-20 Fiat Spa DEVICE FOR MEASURING THE MASS AIR FLOW IN THE INTAKE DUCT OF INTERNAL COMBUSTION ENGINES USING ULTRASOUND
JPS587523A (en) * 1981-07-07 1983-01-17 Honda Motor Co Ltd Ultrasonic wave type air flowmeter for vehicle
DE3312092A1 (en) * 1983-04-02 1984-10-04 Volkswagenwerk Ag, 3180 Wolfsburg Arrangement for determining the flow rate of a medium, in particular the air flow rate, through an air inlet line of an internal combustion engine
DE3331519A1 (en) * 1983-09-01 1985-03-21 Elster AG, Meß- und Regeltechnik, 6700 Ludwigshafen Method and device for correcting the measurement of the flow velocity of fluids by means of ultrasound
US6098466A (en) * 1998-06-09 2000-08-08 Transonic Systems, Inc. Ultrasonic flow sensor incorporating full flow illumination
DE10344895A1 (en) * 2003-09-26 2005-04-21 Bosch Gmbh Robert Ultrasonic flow sensor with transducer array

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19549162A1 (en) * 1995-01-31 1996-08-01 Danfoss As Ultrasonic flow meter
US6343511B1 (en) * 1995-06-07 2002-02-05 Panametrics, Inc. Ultrasonic path bundle and systems
DE19934212A1 (en) * 1998-07-24 2000-02-17 Inst Francais Du Petrole Method and device for measuring the flow rate of a fluid stream
EP1065474A2 (en) * 1999-07-01 2001-01-03 Hydrometer GmbH Ultrasonic flow counter with sound deviation
EP1096236A2 (en) * 1999-09-06 2001-05-02 Iskrameco, Merjenje in upravljanje energije d.d. Ultrasonic flowmeter for fluids

Also Published As

Publication number Publication date
DE102006041530B4 (en) 2008-10-30
WO2008028898A2 (en) 2008-03-13
DE102006041530A1 (en) 2008-03-20

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