EP1272821A1 - Unite de protection pour detecteur de debit massique place dans un canal d'air d'admission - Google Patents

Unite de protection pour detecteur de debit massique place dans un canal d'air d'admission

Info

Publication number
EP1272821A1
EP1272821A1 EP01931403A EP01931403A EP1272821A1 EP 1272821 A1 EP1272821 A1 EP 1272821A1 EP 01931403 A EP01931403 A EP 01931403A EP 01931403 A EP01931403 A EP 01931403A EP 1272821 A1 EP1272821 A1 EP 1272821A1
Authority
EP
European Patent Office
Prior art keywords
outer ring
measuring
flow
impact body
medium
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.)
Withdrawn
Application number
EP01931403A
Other languages
German (de)
English (en)
Inventor
Thomas Lenzing
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 EP1272821A1 publication Critical patent/EP1272821A1/fr
Withdrawn legal-status Critical Current

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
    • G01F1/68—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 using thermal effects
    • G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
    • G01F1/6842—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow with means for influencing the fluid flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/12—Cleaning arrangements; Filters

Definitions

  • a device (DE-OS 35 15 206) is already known in which a capturing element is provided in the vicinity of a measuring element in a measuring channel of the device in order to have a
  • the measuring element can advantageously be protected against contamination from the line.
  • Intake line 7 through which a medium, in particular the air drawn in by the internal combustion engine, flows.
  • the wall 5 of the suction line 7 delimits a flow cross section, which in the case of the cylindrical suction line 7 is, for example, circular Cross-section, m whose center extends in the direction of the flowing medium, parallel to the wall 5, a central axis 11 which is oriented perpendicular to the plug axis 10.
  • the direction of the flowing medium is indicated in FIGS. 1 and 2 by corresponding arrows 18 and runs there from left to right.
  • the measuring body 17 protrudes into the flowing medium and has a measuring channel 20 with which at least one measuring element 21 for determining at least one parameter of a medium flowing in the suction line 7 is accommodated.
  • a measuring element is used which, for example, determines the volume flow of the flowing medium.
  • Other parameters that can be measured are, for example, pressure, temperature, a concentration of a
  • a baffle 25 is accommodated in the suction line 7, the shape of which is designed in such a way that components which are also transported in the flow 18 of the medium, in particular those in liquid form, essentially extend from the center of the suction line 7, which is identified by the central axis 11 a lower part of the wall 5 shown in FIG. 2 and identified by the reference symbol 8 are deflected.
  • the vertically arranged impact body 25 has, for example, a prismatic shape with an essentially triangular cross-sectional area and a tip opposite to the flow 18.
  • the impact body 25 can also be aerodynamically shaped.
  • An outer ring 30 is arranged from an upstream end 45 of the impact body 25 to, for example, an upstream start 46 of the measuring body 17.
  • the outer ring 30 can by webs (not shown) with the
  • the outer ring 30 forms in the flow direction 18 within the outer ring 30 a tapering section 31, in which there is an increase in the flow rate of the medium or an acceleration.
  • Liquid or solid particles entrained by the gas in line 7 hit the impact body as a result of significantly higher inertia compared to the gas and are deflected radially outwards towards wall 5. Solid particles can rarely get into the gap 38 and thus into the tapering 31 section formed by the outer ring 30, since the outer ring 30 extends from the impact body 25 to the measuring housing 17.
  • the liquid that strikes the baffle 25 then forms a wall film on the baffle due to the much greater dynamic viscosity, the wall film being distributed on the inside 34 and outside 35 of the outer ring 30 and therefore not reaching the channel 20.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Measuring Volume Flow (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measuring Fluid Pressure (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

La précision de mesure des dispositifs connus servant à mesurer la masse d'un fluide en écoulement peut être affectée par des constituants liquides entraînés dans ledit fluide. Le dispositif (1) selon l'invention présente une chicane (25) placée en amont de l'élément de mesure (21) et entourée au moins partiellement d'un anneau extérieur (30) qui forme un étranglement dans la direction d'écoulement (18) pour dévier de l'élément de mesure (21) les constituants liquides entraînés dans l'écoulement (18), au moyen de la chicane (25). Ce dispositif s'utilise pour mesurer la masse d'un fluide en écoulement, notamment la masse d'air d'admission de moteurs à combustion interne.
EP01931403A 2000-04-04 2001-03-31 Unite de protection pour detecteur de debit massique place dans un canal d'air d'admission Withdrawn EP1272821A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10016642 2000-04-04
DE10016642A DE10016642A1 (de) 2000-04-04 2000-04-04 Vorrichtung zur Bestimmung zumindest eines Parameters eines strömenden Mediums
PCT/DE2001/001279 WO2001075402A1 (fr) 2000-04-04 2001-03-31 Unite de protection pour detecteur de debit massique place dans un canal d'air d'admission

Publications (1)

Publication Number Publication Date
EP1272821A1 true EP1272821A1 (fr) 2003-01-08

Family

ID=7637499

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01931403A Withdrawn EP1272821A1 (fr) 2000-04-04 2001-03-31 Unite de protection pour detecteur de debit massique place dans un canal d'air d'admission

Country Status (9)

Country Link
US (1) US6705159B2 (fr)
EP (1) EP1272821A1 (fr)
JP (1) JP2003529757A (fr)
KR (1) KR20020023226A (fr)
CN (1) CN1217159C (fr)
BR (1) BR0105569A (fr)
DE (1) DE10016642A1 (fr)
PL (1) PL351077A1 (fr)
WO (1) WO2001075402A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10027830B4 (de) * 2000-06-05 2006-03-09 Siemens Ag Massenstrommesser
DE10144327C1 (de) * 2001-09-10 2002-12-12 Siemens Ag Luftmassendurchflussmesser mit Strömungselementen
DE10154253B4 (de) * 2001-11-05 2006-06-22 Siemens Ag Vorrichtung mit einem Luftansaugrohr und einer darin eingesteckten Luftmassensensoranordnung
DE10230430B4 (de) * 2002-07-06 2005-10-20 Daimler Chrysler Ag Ansaugluftführung einer Brennkraftmaschine
US20050070819A1 (en) * 2003-03-31 2005-03-31 Rosedale Medical, Inc. Body fluid sampling constructions and techniques
JP4826140B2 (ja) * 2005-05-30 2011-11-30 株式会社デンソー 流量測定装置
DE102006024745A1 (de) * 2006-05-26 2007-12-06 Siemens Ag Massenstromsensorvorrichtung
DE102009054082A1 (de) * 2009-11-20 2011-05-26 Mahle International Gmbh Messvorrichtung, Frischluftkanal, Frischluftanlage und Strömungsführungselement
US9032815B2 (en) 2011-10-05 2015-05-19 Saudi Arabian Oil Company Pulsating flow meter having a bluff body and an orifice plate to produce a pulsating flow
DE102013009347A1 (de) 2013-06-04 2014-12-04 Hydrometer Gmbh Durchflussmesser
JP6690899B2 (ja) * 2015-06-29 2020-04-28 株式会社デンソー 空気流量測定装置
AT520416B1 (de) 2017-08-24 2019-07-15 Avl List Gmbh Messvorrichtung zum Detektieren einer Messgröße eines partikelbeladenen Fluids
DE102017129031A1 (de) * 2017-12-06 2019-06-06 Truma Gerätetechnik GmbH & Co. KG Heizmodul für eine Heizanlage eines bewohnbaren Fahrzeugs
CN112014589B (zh) * 2020-10-19 2021-01-12 德阳旌卫环保工程有限公司 一种智能流速测量装置及河流流量测量方法
DE102021120883A1 (de) 2021-08-11 2023-02-16 Sick Ag Bestimmung des Durchflusses eines strömenden Fluids

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4449401A (en) * 1981-05-19 1984-05-22 Eaton Corporation Hot film/swirl fluid flowmeter
DE3124960A1 (de) * 1981-06-25 1983-01-20 Robert Bosch Gmbh, 7000 Stuttgart "vorrichtung zur messung der masse eines stroemenden mediums"
JPS6165053A (ja) * 1984-09-07 1986-04-03 Hitachi Ltd 空気流量計
DE19632198C1 (de) * 1996-08-09 1998-03-12 Bosch Gmbh Robert Vorrichtung zur Messung der Masse eines strömenden Mediums
JPH11166719A (ja) * 1997-12-04 1999-06-22 Gastar Corp ダストトラップ装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0175402A1 *

Also Published As

Publication number Publication date
CN1217159C (zh) 2005-08-31
DE10016642A1 (de) 2001-10-18
KR20020023226A (ko) 2002-03-28
US6705159B2 (en) 2004-03-16
US20020170363A1 (en) 2002-11-21
PL351077A1 (en) 2003-03-10
WO2001075402A1 (fr) 2001-10-11
CN1366602A (zh) 2002-08-28
JP2003529757A (ja) 2003-10-07
BR0105569A (pt) 2002-03-19

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