DE102007027252A1 - Gaseous media's mass flow rate determining device for motor vehicle, has sensors formed so that openings are positioned at same position between front side of radiator and/or channels inlet side and rear side and/or channels outlet side - Google Patents
Gaseous media's mass flow rate determining device for motor vehicle, has sensors formed so that openings are positioned at same position between front side of radiator and/or channels inlet side and rear side and/or channels outlet side Download PDFInfo
- Publication number
- DE102007027252A1 DE102007027252A1 DE102007027252A DE102007027252A DE102007027252A1 DE 102007027252 A1 DE102007027252 A1 DE 102007027252A1 DE 102007027252 A DE102007027252 A DE 102007027252A DE 102007027252 A DE102007027252 A DE 102007027252A DE 102007027252 A1 DE102007027252 A1 DE 102007027252A1
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- DE
- Germany
- Prior art keywords
- flow
- gaseous medium
- radiator
- measuring
- channels
- 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.)
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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
- G01F1/05—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 mechanical effects
- G01F1/34—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 mechanical effects by measuring pressure or differential pressure
- G01F1/36—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 mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
-
- 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
- G01F1/05—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 mechanical effects
- G01F1/34—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 mechanical effects by measuring pressure or differential pressure
- G01F1/36—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 mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
- G01F1/40—Details of construction of the flow constriction devices
-
- 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
- G01F1/05—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 mechanical effects
- G01F1/34—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 mechanical effects by measuring pressure or differential pressure
- G01F1/36—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 mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
- G01F1/40—Details of construction of the flow constriction devices
- G01F1/42—Orifices or nozzles
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
- Measuring Volume Flow (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zur Bestimmung von Massenströmen gasförmiger Medien des Patentanspruchs 1.The The invention relates to a device for determining mass flows gaseous media of claim 1.
Aus
der
Aus
dem Artikel „
Da nach diesem Stand der Technik die stirnseitigen Messöffnungen der Messsonden entweder bündig mit den Strömungseintrittsseiten oder den Strömungsaustrittsseiten der Strömungskanäle abschließen, besteht eine Empfindlichkeit gegen Schräganströmung der Messöffnungen. Weiterhin wird durch die gewählte Positionierung der Messöffnungen der Messsonden eine Druckdifferenz über die gesamte Blocktiefe des Kühlers ermittelt, die dem Totaldruckverlust des Kühlers entspricht. Insgesamt wird hierdurch die erzielbare Messgenauigkeit begrenzt.There According to this prior art, the frontal measuring openings the probes either flush with the flow inlet sides or the flow exit sides of the flow channels terminate, there is a sensitivity to oblique flow the measuring openings. Furthermore, by the selected Positioning the measuring openings of the measuring probes a pressure difference over the total block depth of the cooler determined that the total pressure loss corresponds to the radiator. Overall, this is the achievable Measurement accuracy limited.
Hiervon ausgehend liegt der vorliegenden Erfindung das Problem zu Grunde eine neuartige Vorrichtung zur Bestimmung von Massenströmen gasförmiger Medien durch einen Kühler eines Kraftfahrzeugs zu schaffen.Of these, Based on the present invention, the problem is based a novel device for determining mass flows of gaseous Creating media through a radiator of a motor vehicle.
Dieses Problem wird dadurch gelöst, dass die eingangs genannte Vorrichtung zur Bestimmung von Massenströmen gasförmiger Medien durch einen Kühler eines Kraftfahrzeugs durch die Merkmale des kennzeichnenden Teils des Patentanspruchs 1 weitergebildet ist. Erfindungsgemäß sind die oder jede erste Messsonde und die oder jede zweite Messsonde derart ausgebildet, dass stirnseitige Messöffnungen der Messsonden jeweils in etwa an der gleichen Position zwischen einer Vorderseite des Kühlers bzw. einer Strömungseintrittsseite der Strömungskanäle des gasförmigen Mediums und einer Rückseite des Kühlers bzw. einer Strömungsaustrittsseite der Strömungskanäle des gasförmigen Mediums positioniert sind.This Problem is solved by the aforementioned Apparatus for determining mass flows of gaseous Media through a radiator of a motor vehicle through the Characteristics of the characterizing part of patent claim 1 further developed is. According to the invention, the or each first Measuring probe and the or each second measuring probe designed such that frontal measuring openings of the measuring probes respectively at about the same position between a front of the radiator or a flow inlet side of the flow channels of the gaseous medium and a back of the Cooler or a flow outlet side of the Flow channels of the gaseous medium are positioned.
Im Sinne der hier vorliegenden Erfindung erfolgt die Bestimmung des Massenstroms des gasförmigen Mediums durch einen Kühler eines Kraftfahrzeugs wiederum unter Verwendung mindestens einer Messsonde zur Bestimmung des statischen Drucks und mindestens einer Messsonde zur Bestimmung des Totaldrucks, wobei die Messsonden derart ausgebildet sind, dass stirnseitige Messöffnungen derselben in etwa an der gleichen Position zwischen der Strömungseintrittsseite und der Strömungsaustrittsseite der Strömungskanäle des gasförmigen Mediums positioniert sind. Hierdurch ist die erfindungsgemäße Vorrichtung unempfindlich gegenüber Schräganströmungen. Weiterhin wird im Unterschied zum Stand der Technik bei der erfindungsgemäßen Vorrichtung nicht der Totaldruckverlust des Kühlers ermittelt. Mit der erfindungsgemäßen Vorrichtung ist eine wesentlich genauere Ermittlung von Massenströmen gasförmiger Medien durch einen Kühler eines Kraftfahrzeugs möglich.in the For the purposes of the present invention, the determination of the Mass flow of the gaseous medium through a cooler of a motor vehicle in turn using at least one measuring probe for determining the static pressure and at least one measuring probe for determining the total pressure, wherein the measuring probes are designed in this way are that frontal measuring openings of the same in about at the same position between the flow inlet side and the flow exit side of the flow channels the gaseous medium are positioned. This is the device according to the invention insensitive opposite oblique flows. Farther is in contrast to the prior art in the inventive device not the total pressure loss of the cooler determined. With the device according to the invention is essential more accurate determination of mass flows gaseous Media through a radiator of a motor vehicle possible.
Vorzugsweise ist jede Messsonde in einer rohrförmigen Hülse positioniert, wobei die Hülsen derart bemessen sind, dass die Außenkontur derselben an die Innenkontur der Strömungskanäle des gasförmigen Mediums angepasst sind, nämlich derart, dass die Hülsen bündig mit der Vorderseite des Kühlers bzw. der Strömungseintrittsseite der Strömungskanäle des gasförmigen Mediums und der Rückseite des Kühlers bzw. der Strömungsaustrittsseite der Strömungskanäle des gasförmigen Mediums abschließen.Preferably, each measuring probe is positioned in a tubular sleeve, wherein the sleeves are dimensioned such that the outer contour thereof are adapted to the inner contour of the flow channels of the gaseous medium, namely such that the sleeves are flush with the front side of the radiator or the flow inlet side of the flow channels the gaseous medium and the back of the radiator or the flow outlet complete the side of the flow channels of the gaseous medium.
Durch die Verwendung der die Messsonden umgebenden Hülsen kann die Messgenauigkeit der erfindungsgemäßen Vorrichtung weiter gesteigert werden. Die Hülsen bewirken eine gleichmäßige Zuströmung des gasförmigen Mediums zu den Messsonden und eine Verstärkung der Messdrücke. Hierdurch kann selbst bei geringen Massenströmen mit der erfindungsgemäßen Vorrichtung eine genaue Messung realisiert werden.By the use of the sleeves surrounding the probes can the measurement accuracy of the device according to the invention be further increased. The sleeves cause a uniform Inflow of the gaseous medium to the measuring probes and an amplification of the measuring pressures. hereby can even with low mass flows with the inventive Device an accurate measurement can be realized.
Bevorzugte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung. Ausführungsbeispiele der Erfindung werden, ohne hierauf beschränkt zu sein, an Hand der Zeichnung näher erläutert. Dabei zeigt:preferred Further developments of the invention will become apparent from the dependent claims and the description below. Embodiments of the Invention are provided without being limited thereto explained in detail the drawing. Showing:
Bevor
nachfolgend unter Bezugnahme auf
So
zeigt
So
zeigt
Gemäß
Daher
ist bei der aus dem Stand der Technik gemäß
Im
Sinne der hier vorliegenden Erfindung sind die in
Vorzugsweise
sind die Messsonden
Gemäß
Gemäß
Insgesamt ist die mit der erfindungsgemäßen Vorrichtung realisierbare Messung deutlich genauer als die mit den aus dem Stand der Technik bekannten Vorrichtung realisierbaren Messungen. Die erfindungsgemäße Vorrichtung erlaubt demnach eine hochpräzise Bestimmung von Massenströmen gasförmiger Medien durch einen Kühler eines Kraftfahrzeugs.All in all is the with the device according to the invention realizable measurement much more accurate than with the standstill Technically known device feasible measurements. The inventive Device thus allows a high-precision determination of mass flows of gaseous media through a Radiator of a motor vehicle.
Wie bereits erwähnt, wird einerseits aus einem gemessenen statischen Druck und andererseits aus einem gemessenen Totaldruck des gasförmigen Mediums die Massenströmung desselben abgeleitet. Die Messung beruht daher auf dem Bernoulli- Prinzip, nach welchem die Differenz zwischen dem Totaldruck und dem statischen Druck dem so genannten Staudruck entspricht, der proportional zu dem Produkt aus der Dichte des Strömungsmediums und dem Quadrat der Strömungsgeschwindigkeit ist. Bei einer bekannten Dichte des Strömungsmediums und bei einer bekannten Durchströmungsfläche kann dann auf den Massenstrom geschlossen werden.As already mentioned, on the one hand from a measured static Pressure and on the other hand from a measured total pressure of the gaseous medium derived the mass flow of the same. The measurement is based Hence, on the Bernoulli principle, according to which the difference between the total pressure and the static pressure the so-called dynamic pressure which is proportional to the product of the density of the flow medium and the square of the flow velocity. At a known density of the flow medium and in a known Flow area can then affect the mass flow getting closed.
Im
gezeigten Ausführungsbeispiel der
- 1010
- Kühlercooler
- 1111
- Strömungskanalflow channel
- 1212
- Messsondeprobe
- 1313
- Messsondeprobe
- 1414
- Messöffnungmeasurement opening
- 1515
- Messöffnungmeasurement opening
- 1616
- Strömungsrichtungflow direction
- 2020
- Kühlercooler
- 2121
- Strömungskanalflow channel
- 2222
- Messsondeprobe
- 2323
- Messsondeprobe
- 2424
- Messöffnungmeasurement opening
- 2525
- Messöffnungmeasurement opening
- 2626
- Hülseshell
- 2727
- Strömungsrichtungflow direction
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 8916259 U1 [0002] - DE 8916259 U1 [0002]
Zitierte Nicht-PatentliteraturCited non-patent literature
- - New Pressure-based methods for quantifying radiator airflow, E Y Ng, S Watkins and P W Johnson, Proc. Instn Mech. Engrs Vol. 218, Part D: J. Automobile Engineering, Seiten 361 bis 372, Jahr 2004 [0003] - New Pressure-based Methods for Quantifying Radiator Airflow, EY Ng, S. Watkins and PW Johnson, Proc. Instn Mech. Engrs Vol. 218, Part D: J. Automobile Engineering, pp. 361-372, year 2004 [0003]
- - New Pressure-based methods for quantifying radiator airflow, E Y ng, S Watkins and P W Johnson, Proc. Instn Mech. Engrs Vol 218, Part D: J. Automobile Engineering, Seiten 361 bis 372, Jahr 2004 [0014] - New Pressure-based Methods for Quantifying Radiator Airflow, EYng, S Watkins and PW Johnson, Proc. Instn Mech. Engrs Vol 218, Part D: J. Automobile Engineering, pp. 361-372, year 2004 [0014]
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007027252.0A DE102007027252B4 (en) | 2007-06-13 | 2007-06-13 | Device for determining mass flows of gaseous media through a radiator of a motor vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007027252.0A DE102007027252B4 (en) | 2007-06-13 | 2007-06-13 | Device for determining mass flows of gaseous media through a radiator of a motor vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE102007027252A1 true DE102007027252A1 (en) | 2008-12-18 |
| DE102007027252B4 DE102007027252B4 (en) | 2022-05-12 |
Family
ID=39986087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE102007027252.0A Expired - Fee Related DE102007027252B4 (en) | 2007-06-13 | 2007-06-13 | Device for determining mass flows of gaseous media through a radiator of a motor vehicle |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE102007027252B4 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017129446A1 (en) | 2017-12-11 | 2019-06-13 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Device for determining a total pressure loss of a radiator of a motor vehicle |
| CN112665871A (en) * | 2020-12-10 | 2021-04-16 | 奇瑞汽车股份有限公司 | System and method for testing air quantity of automobile front end cooling module |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102024001847A1 (en) | 2024-06-07 | 2024-08-29 | Mercedes-Benz Group AG | Method for determining a cooling air mass flow for a cooling system of a vehicle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8916259U1 (en) | 1989-05-20 | 1996-07-11 | Dr.Ing.H.C. F. Porsche Ag, 70435 Stuttgart | Device for determining mass flows of gaseous media through heat exchangers |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1531146A (en) | 1976-09-21 | 1978-11-01 | Cambridge Filter Corp | Fluid pressure sensing apparatus |
-
2007
- 2007-06-13 DE DE102007027252.0A patent/DE102007027252B4/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8916259U1 (en) | 1989-05-20 | 1996-07-11 | Dr.Ing.H.C. F. Porsche Ag, 70435 Stuttgart | Device for determining mass flows of gaseous media through heat exchangers |
Non-Patent Citations (1)
| Title |
|---|
| New Pressure-based methods for quantifying radiator airflow, E Y Ng, S Watkins and P W Johnson, Proc. Instn Mech. Engrs Vol. 218, Part D: J. Automobile Engineering, Seiten 361 bis 372, Jahr 2004 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017129446A1 (en) | 2017-12-11 | 2019-06-13 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Device for determining a total pressure loss of a radiator of a motor vehicle |
| CN112665871A (en) * | 2020-12-10 | 2021-04-16 | 奇瑞汽车股份有限公司 | System and method for testing air quantity of automobile front end cooling module |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102007027252B4 (en) | 2022-05-12 |
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Owner name: DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT, 7, DE |
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| R005 | Application deemed withdrawn due to failure to request examination | ||
| R409 | Internal rectification of the legal status completed | ||
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Effective date: 20140224 |
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| R016 | Response to examination communication | ||
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| R018 | Grant decision by examination section/examining division | ||
| R020 | Patent grant now final | ||
| R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |