DE102004005977A1 - Flow parameter measurement device for the flow at the inlet to a combustion engine cylinder has a measurement body mounted on a shaft so that it can only pivot up to 90 degrees in the incoming fluid - Google Patents
Flow parameter measurement device for the flow at the inlet to a combustion engine cylinder has a measurement body mounted on a shaft so that it can only pivot up to 90 degrees in the incoming fluid Download PDFInfo
- Publication number
- DE102004005977A1 DE102004005977A1 DE102004005977A DE102004005977A DE102004005977A1 DE 102004005977 A1 DE102004005977 A1 DE 102004005977A1 DE 102004005977 A DE102004005977 A DE 102004005977A DE 102004005977 A DE102004005977 A DE 102004005977A DE 102004005977 A1 DE102004005977 A1 DE 102004005977A1
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- Germany
- Prior art keywords
- measuring
- flow
- fluid
- shaft
- cylinder
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- 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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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
-
- 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
- F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
- F02B31/04—Modifying induction systems for imparting a rotation to the charge in the cylinder by means within the induction channel, e.g. deflectors
- F02B31/06—Movable means, e.g. butterfly valves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/01—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by using swirlflowmeter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0002—Controlling intake air
- F02D2041/0015—Controlling intake air for engines with means for controlling swirl or tumble flow, e.g. by using swirl valves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zum Messen eines Strömungsparameters einer Wirbelströmung eines Fluids, insbesondere der Impulsenergie einer Tumbleströmung eines in einen Zylinder einer Brennkraftmaschine für ein Kraftfahrzeug einströmenden Fluids, mit einem in einem Einströmraum um eine quer zur Einströmrichtung des Fluids in den Einströmraum verlaufenden Schwenkachse auslenkbar angeordneten, von dem Fluid anströmbaren Messkörper.The The invention relates to a device for measuring a flow parameter a vortex flow a fluid, in particular the pulse energy of a tumble flow of a in a cylinder of an internal combustion engine for a motor vehicle inflowing fluid, with one in an inflow space a transverse to the inflow direction of the fluid in the inflow space extending pivot axis arranged deflectable, from the fluid inflatable measuring body.
Eine
derartige Vorrichtung ist aus
Ein
entsprechend aufgebauter Prüfstand wird
nach
Darüber hinaus
ist aus
Weiterhin
beschreibt
Darüber hinaus ist es bekannt, eine Tumbleströmung zur Gemischaufbereitung in Ottomotoren gezielt einzusetzen, wobei es sich in einem Hubkolbenmotor bei der Tumbleströmung um eine walzenförmige (Luft-)Masseströmung um eine parallel zu einem Kolbenbolzen und senkrecht zu einer Zylinderachse verlaufende Achse handelt. Es werden zielgerecht Strömungsverhältnisse N:/ANMELDUN\Küker2\K12015.DOC für den Homogen-, den Schichtladebetrieb und Übergangsphasen genutzt. Auch beim Dieselbrennverfahren sind Tumbleströmungen von Bedeutung.Furthermore it is known, a tumble flow to selectively use for mixture preparation in gasoline engines, wherein it is in a reciprocating engine at the Tumbleströmung to a roller-shaped (Air) mass flow one parallel to a piston pin and perpendicular to a cylinder axis extending axis acts. There are targeted flow conditions N: / ANMELDUN \ Küker2 \ K12015.DOC for the homogenous, the stratified charge mode and transition phases used. Also in Diesel Burning are Tumbleströmungen of Importance.
Der Erfindung liegt die Aufgabe zugrunde, den zu messenden Strömungsparameter direkt und möglichst exakt zu erfassen.Of the Invention is based on the object, the measured flow parameters directly and as possible to capture exactly.
Diese Aufgabe wird gelöst mit einer eingangs genannten Vorrichtung, bei der der Messkörper an einer auf der Schwenkachse angeordneten Messwelle von dem anströmenden Fluid um maximal 90° verschwenkbar befestigt ist. Damit wird der Einfluss einer Lagerung des Messkörpers auf das Messergebnis vorteilhaft verringert. Der Messkörper wird bei der Erfindung nur geringstmöglich, das heißt regelmäßig nur um wenige Winkelgrade, ausgelenkt. Empfindliche Lagerungen einer drehbaren Welle können mit der erfindungsgemäßen Vorrichtung entfallen; sie kann aufgrund ihres robusten Aufbaus auch als Qualitätssicherungswerkzeug in einer Serienfertigung eingesetzt werden. Von Vorteil ist außerdem, dass mit der Erfindung die kinetische Energie der Wirbelströmung direkt ermittelt werden kann, und zwar vorzugsweise zum Beispiel in einer Brennkraftmaschine die Impulsenergie einer Tumbleströmung von in den Einströmraum einströmender Luft oder einströmenden Luft-Kraftstoff-Gemisches in Höhe der Mittelachse einer theoretischen Tumblewalze, wobei die Messwelle mit dem Messkörper vorzugsweise zylindermittig angebracht sein kann. Der Einströmraum bildet dabei einen Brennraum der Brennkraftmaschine.These Task is solved with an aforementioned device in which the measuring body to a measuring shaft arranged on the pivot axis of the inflowing fluid swiveled by a maximum of 90 ° is attached. Thus, the influence of storage of the measuring body on the measurement result is advantageously reduced. The measuring body becomes minimal in the invention, this means regularly only by a few degrees, deflected. Sensitive storages one rotatable shaft can with the device according to the invention accounts; Due to its robust construction, it can also be used as a quality assurance tool be used in a series production. It is also advantageous that with the invention, the kinetic energy of the vortex flow directly can be determined, preferably in one example Internal combustion engine the pulse energy of a tumble flow of in the inflow space inflowing Air or inflowing Air-fuel mixture in height the central axis of a theoretical tumble roll, wherein the measuring shaft with the measuring body may preferably be mounted cylinder-centered. The inflow space forms while a combustion chamber of the internal combustion engine.
Ein besonders exaktes Messergebnis bei gleichzeitig einfachem Aufbau der Vorrichtung lässt sich gemäß einer vorteilhaften Weiterbildung der Erfindung erzielen, wenn der Messkörper eine Lochblende oder eine Messwabe aufweist.One particularly accurate measurement result with a simple design at the same time the device can be according to a achieve advantageous development of the invention, when the measuring body a Aperture or a measuring honeycomb has.
Man könnte sich beispielsweise vorstellen, dass die Auslenkung des auf der Messwelle angeordneten Messkörpers optisch durch Fernabtastung erfasst wird. Von besonderem Vorteil ist es hingegen, wenn gemäß einer Weiterbildung der Erfindung die Messwelle mit einem eine Torsion der Messwelle erfassenden Momentengeber verbunden ist. Damit können kostengünstige und übliche Messgeber in der Erfindung verwendet werden.you could For example, imagine that the deflection of the on the Measuring shaft arranged measuring body is optically detected by remote sensing. Of particular advantage it is, however, if, according to a Development of the invention, the measuring shaft with a torsion the measuring shaft detecting torque sensor is connected. This can cost-effective and conventional encoders used in the invention.
Gemäß einer anderen vorteilhaften Weiterbildung der Erfindung ist der Einströmraum ein Hohlzylinder. Auf diese Weise kann die erfindungsgemäße Vorrichtung zum Messen der Strömungsverhältnisse in Brennräumen von Hubkolbenmotoren, wie sie zum Beispiel in Kraftfahrzeugen in sehr großer Zahl eingesetzt werden, verwendet werden.According to one Another advantageous embodiment of the invention, the inflow is a Hollow cylinder. In this way, the device according to the invention for measuring the flow conditions in combustion chambers of reciprocating engines, as used in motor vehicles, for example very large number can be used.
Dabei lässt sich insbesondere eine Tumbleströmung sehr exakt messen, wenn die Messwelle vorteilhaft senkrecht zur Zylinderachse des Hohlzylinders angeordnet ist.there let yourself especially a tumble flow Measure very accurately when the measuring wave is advantageous perpendicular to Cylinder axis of the hollow cylinder is arranged.
Ferner ist es für die Messung insbesondere einer Tumbleströmung in einem Hohlzylinder von Vorteil, wenn die Messwelle die Zylinderachse des Hohlzylinders schneidet.Further is it for the measurement in particular of a Tumbleströmung in a hollow cylinder advantageous if the measuring shaft, the cylinder axis of the hollow cylinder cuts.
Eine besonders gute Anpassung an die Ausbildung des Einströmraumes und damit ein weiter verbessertes Messergebnis wird ermöglicht, wenn gemäß einer anderen vorteilhaften Weiterbildung der Erfindung der Messkörper in dem Einströmraum höhenverstellbar angeordnet ist. Beispielsweise ist so eine Anpassung des Messkörpers an die Mittelachse einer theoretischen Tumblewalze unterschiedlicher Brennraumgestaltungen möglich.A particularly good adaptation to the formation of the inflow space and thus a further improved measurement result is made possible if according to one Another advantageous embodiment of the invention, the measuring body in the inflow space height adjustable is arranged. For example, such an adaptation of the measuring body the central axis of a theoretical tumble roll of different combustion chamber designs possible.
Die Erfindung eignet sich grundsätzlich zur Messung von Strömungsparametern beliebiger Wirbelströmungen. Gemäß einer anderen Weiterbildung der Erfindung ist es jedoch von besonderem Vorteil, wenn die Wirbelströmung eine Tumbleströmung ist.The Invention is basically for measuring flow parameters any vortex flows. According to one However, other development of the invention, it is of particular Advantage, if the vortex flow a tumble flow is.
Dabei wird vorteilhaft ein besonders starkes Messsignal und eine sehr exakte Messung erreicht, wenn gemäß einer Weiterbildung der Erfindung die Messwelle mit der Mittelachse einer Tumblewalze der Tumbleströmung übereinstimmend in dem Einströmraum angeordnet ist. Vorteilhaft kann mit einer Weiterbildung die gesamte Strömungsquerschnittsfläche messtechnisch erfasst werden, wenn der Messkörper geeignet ist, die gesamte Strömungsquerschnittsfläche der Tumbleströmung zu überdecken. Auch bei ungünstiger Lage eines Strömungskanals wird damit die Gefahr ausgeschlossen, dass der Messkörper Signale erzeugt, ohne dass sich in der gesamten Strömungsquerschnittsfläche eine Wirbelströmung, insbesondere eine Tumbleströmung, ausgebildet hat.there is advantageous a particularly strong measurement signal and a very exact measurement achieved when according to a development of the invention the measuring shaft coincides with the center axis of a tumbling roller of the tumble flow in the inflow space is arranged. Advantageously, with a training the entire Flow cross-sectional area metrologically be detected when the measuring body is suitable, the entire flow cross-sectional area of the tumble to cover. Even with unfavorable Location of a flow channel This eliminates the risk that the measuring body signals produced without a whirling flow, in particular in the entire flow cross-sectional area a tumble flow, has trained.
Grundsätzlich können mit der erfindungsgemäßen Vorrichtung Wirbelströmungen beliebiger Masseströme gemessen werden. Besonders vorteilhaft ist es hingegen, wenn gemäß einer anderen Weiterbildung der Erfindung das Fluid Luft oder ein Luft-Kraftstoff-Gemisch ist.Basically you can with the device according to the invention eddy currents any mass flows be measured. It is particularly advantageous, however, if, according to a Another embodiment of the invention, the fluid air or an air-fuel mixture is.
Die Erfindung lässt zahlreiche Ausführungsformen zu. Zur weiteren Verdeutlichung ihres Grundprinzips ist ein Ausführungsbeispiel davon in der Zeichnung dargestellt und wird nachfolgend beschrieben. In der Zeichnung zeigtThe Invention leaves numerous embodiments to. To further clarify its basic principle is an embodiment thereof shown in the drawing and will be described below. In the drawing shows
Insbesondere
aus der rechten Darstellung in
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004005977A DE102004005977A1 (en) | 2004-02-06 | 2004-02-06 | Flow parameter measurement device for the flow at the inlet to a combustion engine cylinder has a measurement body mounted on a shaft so that it can only pivot up to 90 degrees in the incoming fluid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004005977A DE102004005977A1 (en) | 2004-02-06 | 2004-02-06 | Flow parameter measurement device for the flow at the inlet to a combustion engine cylinder has a measurement body mounted on a shaft so that it can only pivot up to 90 degrees in the incoming fluid |
Publications (1)
Publication Number | Publication Date |
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DE102004005977A1 true DE102004005977A1 (en) | 2005-08-25 |
Family
ID=34801694
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102004005977A Withdrawn DE102004005977A1 (en) | 2004-02-06 | 2004-02-06 | Flow parameter measurement device for the flow at the inlet to a combustion engine cylinder has a measurement body mounted on a shaft so that it can only pivot up to 90 degrees in the incoming fluid |
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DE (1) | DE102004005977A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005012776A1 (en) * | 2005-03-19 | 2006-09-21 | Bayerische Motoren Werke Ag | Motor vehicles petrol engine`s combustion chamber gas dynamic effects identifying method, involves identifying effects based on parameter at existence of effects, where parameter correlates with coil voltage and current |
DE102022200846A1 (en) | 2022-01-26 | 2023-07-27 | Avl Tippelmann Gmbh | MEASURING DEVICE FOR MEASURING THE ROTATIONAL COMPONENTS OF A MEASURING FLOW IN A CYLINDER-SHAPED COMBUSTION CHAMBER OF AN ENGINE |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2613275C2 (en) * | 1976-03-27 | 1985-01-31 | Götz Dipl.-Ing. 7106 Neuenstadt Tippelmann | Twist measuring device |
DE4041076A1 (en) * | 1990-12-21 | 1992-06-25 | Goetz Dipl Ing Tippelmann | METHOD AND DEVICE FOR MEASURING FLOWS |
DE4133277A1 (en) * | 1991-10-08 | 1993-04-15 | Fev Motorentech Gmbh & Co Kg | DEVICE FOR THE EXAMINATION OF FLOW MOVEMENT IN CYLINDRICAL COMPONENTS |
DE68921872T2 (en) * | 1989-02-17 | 1995-07-27 | Tomoe Tech Res Co | Throttle valve for flow measurement and associated method. |
-
2004
- 2004-02-06 DE DE102004005977A patent/DE102004005977A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2613275C2 (en) * | 1976-03-27 | 1985-01-31 | Götz Dipl.-Ing. 7106 Neuenstadt Tippelmann | Twist measuring device |
DE68921872T2 (en) * | 1989-02-17 | 1995-07-27 | Tomoe Tech Res Co | Throttle valve for flow measurement and associated method. |
DE4041076A1 (en) * | 1990-12-21 | 1992-06-25 | Goetz Dipl Ing Tippelmann | METHOD AND DEVICE FOR MEASURING FLOWS |
DE4133277A1 (en) * | 1991-10-08 | 1993-04-15 | Fev Motorentech Gmbh & Co Kg | DEVICE FOR THE EXAMINATION OF FLOW MOVEMENT IN CYLINDRICAL COMPONENTS |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005012776A1 (en) * | 2005-03-19 | 2006-09-21 | Bayerische Motoren Werke Ag | Motor vehicles petrol engine`s combustion chamber gas dynamic effects identifying method, involves identifying effects based on parameter at existence of effects, where parameter correlates with coil voltage and current |
DE102005012776B4 (en) * | 2005-03-19 | 2020-07-02 | Bayerische Motoren Werke Aktiengesellschaft | Method and device for identifying gas dynamic effects |
DE102022200846A1 (en) | 2022-01-26 | 2023-07-27 | Avl Tippelmann Gmbh | MEASURING DEVICE FOR MEASURING THE ROTATIONAL COMPONENTS OF A MEASURING FLOW IN A CYLINDER-SHAPED COMBUSTION CHAMBER OF AN ENGINE |
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Legal Events
Date | Code | Title | Description |
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8141 | Disposal/no request for examination | ||
R005 | Application deemed withdrawn due to failure to request examination |
Effective date: 20110208 |