DE19732368B4 - Method for controlling a throttle body on an internal combustion engine - Google Patents
Method for controlling a throttle body on an internal combustion engine Download PDFInfo
- Publication number
- DE19732368B4 DE19732368B4 DE19732368A DE19732368A DE19732368B4 DE 19732368 B4 DE19732368 B4 DE 19732368B4 DE 19732368 A DE19732368 A DE 19732368A DE 19732368 A DE19732368 A DE 19732368A DE 19732368 B4 DE19732368 B4 DE 19732368B4
- Authority
- DE
- Germany
- Prior art keywords
- pressure
- line
- control unit
- internal combustion
- throttle element
- 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.)
- Expired - Lifetime
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Classifications
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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
- F02D17/00—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling
- F02D17/04—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling rendering engines inoperative or idling, e.g. caused by abnormal conditions
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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
- F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
- F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
- F02D11/08—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the pneumatic type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/52—Systems for actuating EGR valves
- F02M26/59—Systems for actuating EGR valves using positive pressure actuators; Check valves therefor
- F02M26/60—Systems for actuating EGR valves using positive pressure actuators; Check valves therefor in response to air intake pressure
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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
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
- F02D2009/0201—Arrangements; Control features; Details thereof
- F02D2009/0245—Shutting down engine, e.g. working together with fuel cut-off
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/45—Sensors specially adapted for EGR systems
- F02M26/46—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition
- F02M26/47—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition the characteristics being temperatures, pressures or flow rates
Abstract
Verfahren zum Steuern eines Drosselorganes (9) in einer Verbrennungsluft zuführenden Leitung (3) an einer Brennkraftmaschine (1), mit einem in dieser Leitung (3) angeordneten Drucksensor (8) zur Erfassung eines Luftdruckes, einem Steuergerät (10), welches die Sensorsignale des Drucksensors (8) verarbeitet und welches u. a. Stellsignale zur Betätigung des Drosselorganes (9) abgibt, dadurch gekennzeichnet, dass zum Abstellen der Brennkraftmaschine (1) zunächst vom Steuergerät (10) die Kraftstoffzufuhr unterbrochen und anschließend das Drosselorgan (9) in eine die Leitung (3) sperrende Stellung bewegt wird, wobei das Steuergerät (10) die Druckdifferenz zwischen einem von dem der Leitung (3) zugeleiteten Drucksensor (8) erfaßten Luftdruck und wahlweise einem Atmosphärendruck oder einem Umgebungsluftdruck ermittelt und bei Unterschreiten einer vorgebbaren Grenzdruckdifferenz an das Drosselorgan (9) ein dieses in Schließ-Stellung bewegendes Stellsignal abgibt und dass das Drosselorgan (9) in vorbestimmten Kennfeldbereichen von dem Steuergerät (10) derartig bewegt wird, dass sich über dem Drosselorgan (9) eine bestimmte Druckdifferenz zur Förderung einer...Method for controlling a throttle element (9) in a line (3) supplying combustion air to an internal combustion engine (1), with a pressure sensor (8) arranged in this line (3) for detecting an air pressure, a control unit (10) which generates the sensor signals of the pressure sensor (8) processed and which u. a. Emits control signals for actuating the throttle element (9), characterized in that, to switch off the internal combustion engine (1), the fuel supply is first interrupted by the control unit (10) and then the throttle element (9) is moved into a position blocking the line (3), whereby the control unit (10) determines the pressure difference between an air pressure measured by the pressure sensor (8) fed to the line (3) and either an atmospheric pressure or an ambient air pressure and, if the pressure drops below a predeterminable limit pressure difference, the throttle element (9) moves it into the closed position Outputs control signal and that the throttle element (9) is moved in predetermined map areas by the control unit (10) in such a way that a certain pressure difference is created across the throttle element (9) to deliver a ...
Description
Die Erfindung betrifft ein Verfahren zum Steuern eines Drosselorganes in einer verbrennungsluftführenden Leitung an einer Brennkraftmaschine gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a method for controlling a throttle element in a combustion-air-carrying line to an internal combustion engine according to the preamble of claim 1.
In der DE-Z „MTZ” Motortechnische Zeitschrift, 56/1995, Nr. 718, Seiten 402–410 ist, insbesondere auf der Seite 408, ein Abgasreinigungs- und Aufladesystem einer turboaufgeladenen, direkteinspritzenden Diesel-Brennkraftmaschine beschrieben, welches ein Drosselorgan in einer Verbrennungsluft zuführenden Leitung sowie einen Drucksensor zur Erfassung des Luftdruckes in dieser Leitung und ein elektronisches Steuergerät aufweist. Dieses Steuergerät verarbeitet u. a. die Sensorsignale dieses Drucksensors und gibt u. a. Stellsignale zur Betätigung des Drosselorganes derart ab, dass sich unter allen Betriebsbedingungen jeweils eine optimale Abgasrückführrate durch Erzeugen eines geeigneten Unterdruckes mittels des Drosselorganes einstellen lässt. In Kennfeldbereichen ohne Abgasrückführung befindet sich das Drosselorgan in einer die Luftströmung möglichst, wenig störenden Offen-Stellung, während es zur Erzeugung einer gezielten Druckdifferenz um bestimmte Winkel in Richtung auf eine Geschlossen-Stellung geschwenkt wird, ohne diese zu erreichen.In DE-Z "MTZ" Motortechnische Zeitschrift, 56/1995, No. 718, pages 402-410, in particular on page 408, an exhaust gas purification and charging system of a turbocharged, direct injection diesel engine is described, which is a throttle body in a Comprises combustion air feeding line and a pressure sensor for detecting the air pressure in this line and an electronic control unit. This control unit processes u. a. the sensor signals of this pressure sensor and are u. a. Control signals for actuating the throttle body from such that under any operating conditions in each case an optimal exhaust gas recirculation rate can be adjusted by generating a suitable negative pressure by means of the throttle body. In map areas without exhaust gas recirculation, the throttle body is in an air flow as possible, little disturbing open position, while it is pivoted to produce a targeted pressure difference by certain angle in the direction of a closed position without reaching them.
Aus der
Aus der
Aus der
Aus
Es ist bei Dieselbrennkraftmaschinen ein allgemein bekanntes Problem, dass sich diese nicht in der gleichen komfortablen Weise abstellen lassen, wie etwa Otto-Brennkraftmschinen. Zu beobachten ist aufgrund der hohen Verdichtungsenddrücke ein starkes Rückstellmoment, welches sich als unangenehmes Schütteln in einem mit einer solchen Brennkraftmaschine. ausgestatteten Kraftfahrzeug bemerkbar macht.It is a common problem with diesel engines that they can not be turned off in the same convenient manner as gasoline engines. Due to the high compression end pressures, it is possible to observe a strong restoring moment, which turns out to be unpleasant shaking in one with such an internal combustion engine. equipped motor vehicle makes noticeable.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum Steuern eines Drosselorganes in einer Verbrennungsluft zuführenden Leitung an einer Brennkraftmaschine anzugeben, welches beim Abstellen dieser Brennkraftmaschine zu einem komfortablen, weichen Auslaufen der Brennkraftmaschine führt.The invention has for its object to provide a method for controlling a throttle body in a combustion air supplying line to an internal combustion engine, which leads to a comfortable, smooth leakage of the internal combustion engine when turning off this engine.
Die Lösung dieser Aufgabe gelingt mit einem Verfahren gemäß Patentanspruch 1. Erfindungsgemäß ist vorgesehen, dass bei einem Befehl zum Abstellen der Brennkraftmaschine zunächst vom Steuergerät die Kraftstoffzufuhr unterbrochen und anschließend das Drosselorgan in eine die Leitung vollständig sperrende Stellung bewegt wird. Hierdurch wird das an sich nur zur Erzeugung einer Druckdifferenz zwecks Abgasrückführung benutzte Drosselorgan zusätzlich zum vollständigen Absperren der luftzuführenden Leitung benutzt. Hierdurch wird keine zu verdichtende Luft mehr nachgeführt und die Brennkraftmaschine läuft weich aus.The solution to this problem is achieved by a method according to claim 1. The invention provides that when a command to stop the engine first interrupted by the control unit, the fuel supply and then the throttle body is moved to a line completely blocking position. As a result, the throttle element used in itself only for generating a pressure difference for the purpose of exhaust gas recirculation is used in addition to completely shut off the air supply line. As a result, no air to be compressed is tracked more and the engine runs smoothly.
Aufgrund des zuvor gesagten findet das Verfahren bevorzugt bei selbstzündenden Dieselbrennkraftmaschinen, insbesondere bei direkteinspritzenden Dieselbrennkraftmaschinen Anwendung.Due to the above, the method is preferably used in self-igniting diesel internal combustion engines, in particular direct injection diesel engine application.
Bevorzugt kann vorgesehen sein, dass die Brennkraftmaschine aufgeladen ist und weiterhin bevorzugt ist es, dass der zur Erfassung des Luftdruckes in der Verbrennungsluft zuführenden Leitung angeordnete Drucksensor zusätzlich zur Vermeidung von evtl. auftretenden Betriebsstörungen genutzt wird. Hierzu kann es bevorzugt vorgesehen sein, dass dessen Signal mit dem Signal eines dem Steuergerät zugeordneten Atmosphärendruck-Sensors verglichen wird und bei Unterschreiten einer vorgebbaren Grenzdruckdifferenz zwischen dem Atmosphärendruck und dem innerhalb der Verbrennungsluft zuführenden Leitung vorliegenden Druckes das Absperrorgan in seine Schließstellung bewegt wird.Preferably, it can be provided that the internal combustion engine is charged and furthermore it is preferred that the pressure sensor arranged to detect the air pressure in the combustion air line additionally be used to avoid possible malfunctions occurring. For this purpose, it may preferably be provided that its signal is compared with the signal of an atmospheric pressure sensor assigned to the control unit and the shut-off element is moved into its closed position when the pressure drops below a predefinable limit pressure difference between the atmospheric pressure and the line supplying combustion air.
Weitere Vorteile und Merkmale der Erfindung ergeben sich aus den abhängigen Ansprüchen und dem nachfolgend anhand einer einzigen Figur erläuterten Ausführungsbeispiel. Einer insgesamt mit
Die über die Leitung
Das Drosselorgan
Im Betrieb der Brennkraftmaschine
Soll die Brennkraftmaschine
Das Steuergerät
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19732368A DE19732368B4 (en) | 1997-07-28 | 1997-07-28 | Method for controlling a throttle body on an internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19732368A DE19732368B4 (en) | 1997-07-28 | 1997-07-28 | Method for controlling a throttle body on an internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19732368A1 DE19732368A1 (en) | 1999-02-04 |
DE19732368B4 true DE19732368B4 (en) | 2012-06-06 |
Family
ID=7837091
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19732368A Expired - Lifetime DE19732368B4 (en) | 1997-07-28 | 1997-07-28 | Method for controlling a throttle body on an internal combustion engine |
Country Status (1)
Country | Link |
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DE (1) | DE19732368B4 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4058965B2 (en) * | 2002-03-06 | 2008-03-12 | トヨタ自動車株式会社 | Stop control device for internal combustion engine |
FR2873753B1 (en) * | 2004-07-30 | 2009-02-13 | Peugeot Citroen Automobiles Sa | METHOD FOR STOPPING AN INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE AND AN ASSOCIATED MOTOR |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3426791A1 (en) * | 1984-07-20 | 1986-02-06 | Voest-Alpine Friedmann GmbH, Linz | Emergency shut-off device for internal combustion engines |
DE4010940A1 (en) * | 1989-04-11 | 1990-10-18 | Volkswagen Ag | Switch=off method for IC engine - closing throttle valve but delaying closure for fuel valve |
DE4135143A1 (en) * | 1990-11-06 | 1992-05-07 | Mitsubishi Electric Corp | FUEL CONTROL UNIT FOR AN ENGINE |
DE4104872A1 (en) * | 1991-02-18 | 1992-08-20 | Wolfgang Schieck | Throttle-free load control for Otto engine - using two inlet valves per cylinder operated by two cam shafts |
DE19527030A1 (en) * | 1994-07-25 | 1996-02-08 | Mitsubishi Electric Corp | Exhaust gas recycling control for IC engine with abnormality detection |
DE69204813T2 (en) * | 1991-12-26 | 1996-04-18 | Fuji Heavy Ind Ltd | Switch-off device for a diesel engine. |
-
1997
- 1997-07-28 DE DE19732368A patent/DE19732368B4/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3426791A1 (en) * | 1984-07-20 | 1986-02-06 | Voest-Alpine Friedmann GmbH, Linz | Emergency shut-off device for internal combustion engines |
DE4010940A1 (en) * | 1989-04-11 | 1990-10-18 | Volkswagen Ag | Switch=off method for IC engine - closing throttle valve but delaying closure for fuel valve |
DE4135143A1 (en) * | 1990-11-06 | 1992-05-07 | Mitsubishi Electric Corp | FUEL CONTROL UNIT FOR AN ENGINE |
DE4104872A1 (en) * | 1991-02-18 | 1992-08-20 | Wolfgang Schieck | Throttle-free load control for Otto engine - using two inlet valves per cylinder operated by two cam shafts |
DE69204813T2 (en) * | 1991-12-26 | 1996-04-18 | Fuji Heavy Ind Ltd | Switch-off device for a diesel engine. |
DE19527030A1 (en) * | 1994-07-25 | 1996-02-08 | Mitsubishi Electric Corp | Exhaust gas recycling control for IC engine with abnormality detection |
Non-Patent Citations (1)
Title |
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"MTZ Motortechnische Zeitschrift, 56/1995, Nr.7/8, S. 402-410 * |
Also Published As
Publication number | Publication date |
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DE19732368A1 (en) | 1999-02-04 |
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8110 | Request for examination paragraph 44 | ||
8120 | Willingness to grant licences paragraph 23 | ||
R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final |
Effective date: 20120907 |
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R071 | Expiry of right |