DE102010014599A1 - Air-flow meter for measuring mass flow rate of fluid in air intake manifold of e.g. diesel engine, has transfer element transferring signals processed by linearization element, filter element and conversion element - Google Patents
Air-flow meter for measuring mass flow rate of fluid in air intake manifold of e.g. diesel engine, has transfer element transferring signals processed by linearization element, filter element and conversion element Download PDFInfo
- Publication number
- DE102010014599A1 DE102010014599A1 DE201010014599 DE102010014599A DE102010014599A1 DE 102010014599 A1 DE102010014599 A1 DE 102010014599A1 DE 201010014599 DE201010014599 DE 201010014599 DE 102010014599 A DE102010014599 A DE 102010014599A DE 102010014599 A1 DE102010014599 A1 DE 102010014599A1
- Authority
- DE
- Germany
- Prior art keywords
- air mass
- signal characteristic
- sensor element
- air
- mass flow
- 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.)
- Ceased
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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
- G01F1/696—Circuits therefor, e.g. constant-current flow meters
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- 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
- F02D41/182—Circuit arrangements for generating control signals by measuring intake air flow for the control of a fuel injection device
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- 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
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/1413—Controller structures or design
- F02D2041/1432—Controller structures or design the system including a filter, e.g. a low pass or high pass filter
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measuring Volume Flow (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
Die Erfindung betrifft einen Luftmassenmesser mit einem Sensorelement zur Erfassung eines Luftmassenstroms und zur Erzeugung eins Signals und mit einer elektronischen Schaltung zur Verarbeitung des Signals vom Sensorelement, wobei das Sensorelement eine nichtlineare Signalkennlinie erzeugt. Weiterhin betrifft die Erfindung ein Verfahren zur Verarbeitung von Signalen eines Luftmassenmessers, wobei der Luftmassenmesser ein Sensorelement zur Erfassung eines Luftmassenstroms und zur Erzeugung eines Signals aufweist und eine elektronische Schaltung zur Verarbeitung des Signals vom Sensorelement aufweist, wobei das Sensorelement eine nichtlineare Signalkennlinie erzeugt.The The invention relates to an air mass meter with a sensor element for detecting an air mass flow and for generating a signal and with an electronic circuit for processing the signal from the sensor element, the sensor element having a nonlinear signal characteristic generated. Furthermore, the invention relates to a method for processing of signals of an air mass meter, wherein the air mass meter a sensor element for detecting an air mass flow and for generating a signal and an electronic circuit for processing the signal from the sensor element, wherein the sensor element generates a non-linear signal characteristic.
Luftmassenmesser sind geeignet zum Erfassen eines Massenstroms eines Fluids (Luftmassenstroms) in einem Strömungskanal. Ein derartiger Strömungskanal kann beispielsweise ein Luftansaugrohr einer Brennkraftmaschine sein. Abhängig von dem durch den Luftmassenmesser erfassten Massenstrom können sowohl Diagnosen beispielsweise des Betriebs der Brennkraftmaschine durchgeführt werden als auch eine Steuerung der Brennkraftmaschine erfolgen. Zu diesen Zwecken ist ein auch unter unterschiedlichen Betriebsbedingungen zuverlässiges und möglichst präzises Erfassen des tatsächlichen Massenstroms wichtig.Air flow sensor are suitable for detecting a mass flow of a fluid (air mass flow) in a flow channel. Such a flow channel For example, an air intake pipe of an internal combustion engine be. Depending on the mass flow detected by the air mass meter can diagnose, for example, the operation of the Internal combustion engine are performed as well as a controller the internal combustion engine. For these purposes one is also under different operating conditions reliable and as accurately as possible recording of the actual Mass flow important.
Moderne in zum Beispiel Mikrosystem(MEMS)-Technik gebaute Luftmassenmesser sind sehr schnell und erfassen nahezu jede Änderung im Luftmassenstrom. Zudem können sie zwischen im Luftansaugrohr zur Brennkraftmaschine strömender Luft und von der Brennkraftmaschine zurück strömender Luft unterscheide. Auch Pulsationen im Luftansaugrohr, die durch die zyklische Arbeitsweise von Kolbenbrennkraftmaschinen entstehen, werden von schnellen Luftmassenmessern erfasst und vom Sensorelement in ein Signal umgewandelt. Gerade diese Pulsationen können jedoch zur erheblichen Verfälschung des Messwertes für den mittleren Luftmassenstrom führen.modern in, for example, microsystem (MEMS) technology built air mass meters very fast and detect almost every change in the air mass flow. In addition, they can flow between in the air intake pipe to the internal combustion engine Air and streaming back from the engine Air is different. Also, pulsations in the air intake pipe, by The cyclic operation of reciprocating internal combustion engines arise detected by fast air mass meters and the sensor element in a signal is converted. Just these pulsations can However, the significant distortion of the measured value for lead the average air mass flow.
Der Erfindung liegt die Aufgabe zugrunde, einen schnellen Luftmassenmesser anzugeben, der einen möglichst geringen Fehler bei der Verarbeitung des Signals aufweist. Darüber hinaus liegt der Erfindung die Aufgabe zugrunde ein Verfahren zur Verarbeitung von Signalen eines Luftmassenmessers anzugeben, bei dem ein möglichst geringer Verarbeitungsfehler auftritt.Of the Invention is based on the object, a fast air mass meter indicate the lowest possible error in the Processing the signal has. In addition lies The invention is based on the object of a method for processing indicate signals of an air mass meter, in which a possible low processing error occurs.
Die Aufgaben werden durch die Merkmale der unabhängigen Ansprüche gelöstThe Tasks are characterized by the features of the independent claims solved
Da die elektronische Schaltung zunächst ein Linearisierungselement zur Umwandlung der nichtlinearen Signalkennlinie vom Sensorelement in eine lineare Signalkennlinie aufweist, werden Fehler bei der Bildung des Mittelwertes für den Luftmassenstrom in dem Filterelemente wesentlich reduziert. Das Filterelement führt die Integration zur Mittelwertbildung im Luftmassenraum aus und nicht im Signalraum, der durch die nichtlineare Signalkennlinie zu einer fehlerhaften Mittelwertbildung führt. Durch ein Umwandlungselement zur Umwandlung der linearen Signalkennlinie in eine nichtlineare Signalkennlinie aufweist, lassen sich fehlerhafte Signalweiterverarbeitungen, die besonders bei geringen Massenströmen auftreten, effektiv vermeiden. Die vom Weitergabeelement zur Weitergabe der vom Sensorelement erfassten und durch das Linearisierungselement, das Filterelement und das Umwandlungselement verarbeiteten Signale, stellen damit besonders genaues Signale dar, die den Luftmassenstrom im Luftmassenmesser abbilden. Diese hochgenauen Signale werden an die Motorsteuerung gesendet. Damit ist ein besonders genauer Luftmassenmesser offenbart, mit dessen Hilfe die Verbrennung von Kraftstoff in den Zylindern einer Brennkraftmaschine optimal eingestellt werden kann. Dies ist ein Beitrag zur Schonung von fossilen Brennstoffreserven und der Umwelt. Auch für das Verfahren zur Verarbeitung von Signalen eines Luftmassenmessers gelten die soeben genannten Vorteile.There the electronic circuit initially a linearization element for converting the nonlinear signal characteristic from the sensor element in a linear signal characteristic, errors in the Forming the mean value for the air mass flow in the Filter elements significantly reduced. The filter element leads the integration for averaging in the air mass area from and not in signal space, due to the non-linear signal characteristic leads to a faulty averaging. Through a conversion element for converting the linear signal characteristic to a nonlinear one Signal characteristic, can be faulty signal processing, which occur especially at low mass flows, effectively avoid. The of the relay element for passing the detected by the sensor element and by the linearization element, the filter element and the Transform element processed signals, so special accurate signals that represent the air mass flow in the air mass meter. These highly accurate signals are sent to the engine controller. This is a particularly accurate air mass meter disclosed with whose help is the combustion of fuel in the cylinders of a Internal combustion engine can be optimally adjusted. This is a Contribute to the conservation of fossil fuel reserves and the environment. Also for the method for processing signals of a Air mass meter apply the benefits just mentioned.
Bei einer Weiterbildung sind das Sensorelement und die elektronische Schaltung auf einem einzigen Halbleiterelement ausgebildet. Dies hat den Vorteil, dass das Bauteil kostengünstig und besonders fehlerfrei aufgebaut werden kann. Dazu kann das Sensorelement und die elektronische Schaltung in Mikrosystem-Technologie hergestellt sein.at a development are the sensor element and the electronic Circuit formed on a single semiconductor element. This has the advantage that the component cost-effective and special can be established error-free. For this purpose, the sensor element and the electronic circuit manufactured in microsystem technology be.
Die Erfindung wird anhand der folgenden Figuren näher erläutert. Es zeigen:The The invention will be explained in more detail with reference to the following figures. Show it:
Da
die bekannten Verbrennungsmotoren
Sowohl
die Pulsation im Luftmassenstrom Q als auch die Übertragung
des Zeitsignals ΔS an die Motorsteuerung
Um
dieser Problematik zu begegnen zeigt
Die
in
Der
in
Das
schnelle Sensorelement
In
der Figurenfolge
In
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 19724659 A1 [0003] DE 19724659 A1 [0003]
Claims (4)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010014599 DE102010014599A1 (en) | 2010-04-09 | 2010-04-09 | Air-flow meter for measuring mass flow rate of fluid in air intake manifold of e.g. diesel engine, has transfer element transferring signals processed by linearization element, filter element and conversion element |
PCT/EP2011/055352 WO2011124609A1 (en) | 2010-04-09 | 2011-04-06 | Air mass flow sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010014599 DE102010014599A1 (en) | 2010-04-09 | 2010-04-09 | Air-flow meter for measuring mass flow rate of fluid in air intake manifold of e.g. diesel engine, has transfer element transferring signals processed by linearization element, filter element and conversion element |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102010014599A1 true DE102010014599A1 (en) | 2010-11-18 |
Family
ID=42979279
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE201010014599 Ceased DE102010014599A1 (en) | 2010-04-09 | 2010-04-09 | Air-flow meter for measuring mass flow rate of fluid in air intake manifold of e.g. diesel engine, has transfer element transferring signals processed by linearization element, filter element and conversion element |
Country Status (2)
Country | Link |
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DE (1) | DE102010014599A1 (en) |
WO (1) | WO2011124609A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015022156A1 (en) * | 2013-08-12 | 2015-02-19 | Continental Automotive Gmbh | Air mass flow meter |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017125544A1 (en) | 2016-01-22 | 2017-07-27 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for mdct m/s stereo with global ild with improved mid/side decision |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19724659A1 (en) | 1996-06-12 | 1997-12-18 | Unisia Jecs Corp | Device for measurement of gas flow rate at inlet to vehicle engine |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3421245B2 (en) * | 1998-05-27 | 2003-06-30 | 株式会社日立製作所 | Heating resistor type air flow measurement device |
JP4130877B2 (en) * | 2002-06-19 | 2008-08-06 | 株式会社日立製作所 | Flow meter and flow meter system |
-
2010
- 2010-04-09 DE DE201010014599 patent/DE102010014599A1/en not_active Ceased
-
2011
- 2011-04-06 WO PCT/EP2011/055352 patent/WO2011124609A1/en active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19724659A1 (en) | 1996-06-12 | 1997-12-18 | Unisia Jecs Corp | Device for measurement of gas flow rate at inlet to vehicle engine |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015022156A1 (en) * | 2013-08-12 | 2015-02-19 | Continental Automotive Gmbh | Air mass flow meter |
DE102013215921A1 (en) * | 2013-08-12 | 2015-03-05 | Continental Automotive Gmbh | Air flow sensor |
CN105431716A (en) * | 2013-08-12 | 2016-03-23 | 大陆汽车有限公司 | Air mass flow meter |
US20160202099A1 (en) * | 2013-08-12 | 2016-07-14 | Continental Automotive Gmbh | Air Mass Flow Meter |
KR101778904B1 (en) * | 2013-08-12 | 2017-09-15 | 콘티넨탈 오토모티브 게엠베하 | Air mass flow meter |
US9885594B2 (en) * | 2013-08-12 | 2018-02-06 | Continental Automotive Gmbh | Air mass flow meter |
Also Published As
Publication number | Publication date |
---|---|
WO2011124609A1 (en) | 2011-10-13 |
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OAV | Applicant agreed to the publication of the unexamined application as to paragraph 31 lit. 2 z1 | ||
OP8 | Request for examination as to paragraph 44 patent law | ||
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Effective date: 20130716 |