DE19735561B4 - Method and device for controlling an internal combustion engine - Google Patents
Method and device for controlling an internal combustion engine Download PDFInfo
- Publication number
- DE19735561B4 DE19735561B4 DE19735561A DE19735561A DE19735561B4 DE 19735561 B4 DE19735561 B4 DE 19735561B4 DE 19735561 A DE19735561 A DE 19735561A DE 19735561 A DE19735561 A DE 19735561A DE 19735561 B4 DE19735561 B4 DE 19735561B4
- Authority
- DE
- Germany
- Prior art keywords
- pressure
- detected
- fuel
- pressure values
- internal combustion
- 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 - Fee Related
Links
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
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/3809—Common rail control systems
- F02D41/3836—Controlling the fuel pressure
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
- G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
- G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2250/00—Engine control related to specific problems or objectives
- F02D2250/12—Timing of calculation, i.e. specific timing aspects when calculation or updating of engine parameter is performed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2250/00—Engine control related to specific problems or objectives
- F02D2250/14—Timing of measurement, e.g. synchronisation of measurements to the engine cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2250/00—Engine control related to specific problems or objectives
- F02D2250/31—Control of the fuel pressure
-
- 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
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/3809—Common rail control systems
- F02D41/3836—Controlling the fuel pressure
- F02D41/3863—Controlling the fuel pressure by controlling the flow out of the common rail, e.g. using pressure relief valves
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Fuel-Injection Apparatus (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Verfahren zur Steuerung einer Brennkraftmaschine, insbesondere für eine Brennkraftmaschine mit einem Common-Rail-System, wobei wenigstens eine Pumpe den Kraftstoff von einem Niederdruckbereich in einen Druckspeicher fördert, daß Druckwerte, die den Kraftstoffdruck im Druckspeicher kennzeichnen, mit einem Drucksensor erfaßt werden, wobei ausgehend von den erfaßten Druckwerten und einem Sollwert ein Ansteuersignal für ein Druckregelmittel vorgebbar ist, dadurch gekennzeichnet, daß die Druckwerte in vorgegebenen Zeitabständen erfaßt werden, wobei während einer Einspritzung von Kraftstoff keine Druckwerte erfaßt werden.method for controlling an internal combustion engine, in particular for an internal combustion engine with a common rail system, wherein at least one pump the fuel from a low pressure area into an accumulator, promotes pressure values, which characterize the fuel pressure in the accumulator, with a pressure sensor detected be based on the detected pressure values and a Setpoint a control signal for a pressure control means can be predetermined, characterized in that the pressure values at predetermined intervals detected being while being an injection of fuel no pressure values are detected.
Description
Stand der TechnikState of the art
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Steuern einer Brennkraftmaschine gemäß den Oberbegriffen der unabhängigen Ansprüche.The The invention relates to a method and a device for controlling an internal combustion engine according to the preambles the independent one Claims.
Ein
Verfahren und eine Vorrichtung zur Steuerung einer Brennkraftmaschine
sind aus der
Aufgabe der ErfindungObject of the invention
Der Erfindung liegt die Aufgabe zugrunde, bei einem Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine der eingangs genannten Art die Totzeit im Druckregelkreis zu minimieren. Diese Aufgabe wird durch die in den unabhängigen Ansprüchen gekennzeichneten Merkmale gelöst.Of the Invention is based on the object in a method and apparatus for controlling an internal combustion engine of the type mentioned to minimize the dead time in the pressure control loop. This task will by those in the independent claims marked features solved.
Vorteile der ErfindungAdvantages of the invention
Mit der erfindungsgemäßen Vorgehensweise kann die Totzeit beim Druckregelkreis wesentlich verringert werden. Vorteilhafte und zweckmäßige Ausgestaltungen und Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet.With the procedure of the invention can the dead time in the pressure control loop are significantly reduced. advantageous and appropriate embodiments and further developments of the invention are characterized in the subclaims.
Zeichnungdrawing
Die
Erfindung wird nachstehend anhand der in der Zeichnung dargestellten
Ausführungsformen erläutert. Es
zeigen
Beschreibung der AusführungsbeispieleDescription of the embodiments
In
Mit
Die
Leitungen zwischen dem Ausgang der Hochdruckpumpe
Mit
Die
Steuerung
Diese
Einrichtung arbeitet wie folgt: Der Kraftstoff, der sich im Vorratsbehälter befindet,
wird von der Vorförderpumpe
Steigt
der Druck im Niederdruckbereich auf unzulässig hohe Werte an, so öffnet das
Niederdruckbegrenzungsventil
Die
Hochdruckpumpe
Mittels
des Sensors
Zur
Regelung des Druckes P im Hochdruckbereich können auch weitere Stellglieder
eingesetzt werden. Dies ist sind eine in der Fördermenge verstellbare elektrische
Vorförderpumpe
Die
Druckerfassung
Die
Sollwertvorgabe
Die
Berechnung der Ansteuersignale abhängig vom Druck P erfolgt vor
jeder Einspritzung. Diese Berechnung erfolgt also drehzahlabhängig mit
variablem Zeitabstand. Der Abstand zwischen diesen Berechnungen
hängt stark
von der Drehzahl ab. Die Berechnung des Ansteuersignals für das Druckregelventil
im Druckregler
Erfindungsgemäß wird der
Druck zur Istwerterfassung zeitsychron mit einem sehr kleinen Zeittakt
von ca. vorzugsweise 10 ms erfaßt.
Die Druckwerte werden in einem vorgebenen, vorzugsweisen festen
Zeitabständen
erfaßt.
Parallel hierzu erfolgt die winkelsynchrone oder drehzahlsynchrone
Auswertung des Drucks zur Berechnung des Ansteuersignals A. Problematisch
hierbei ist nun, daß wie
in
In
Die Schwankungen des Drucks während der Einspritzung können von der Druckregelung nicht ohne weiteres ausgeglichen werden. Werden diese Schwankungen bei der Istwerterfassung berücksichtigt, so führt dies dazu, daß das Ausgangssignal des Druckreglers unerwünschten starken Schwankungen unterliegt. Erfindungsgemäß ist daher vorgesehen, daß während der Einspritzung, das heißt, zwischen den Zeiträumen t1 und t1', sowie t2 und t2' sowie t3 und t3' keine Druckwerte für die Druckregelung erfaßt werden.The Fluctuations in pressure during the injection can be compensated by the pressure control not readily. Become these fluctuations in the actual value detection taken into account, this leads that the Output signal of the pressure regulator is subject to undesirable strong fluctuations. Therefore, according to the invention provided that during the Injection, that is, between the periods t1 and t1 ', as well t2 and t2 'as well t3 and t3 'none Pressure values for the pressure control are detected.
Die
Zeitpunkte der zeitsynchronen Druckerfassung, bei denen die Druckerfassung
zur Druckregelung erfolgt, sind in der
Bei dem dargestellten Beispiel wird bei der Druckerfassung unmittelbar vor er Einspritzung der Wert sowohl zur Druckregelung als auch zur Steuerung der Injektoren A verwendet.at the illustrated example becomes immediate at the pressure detection before injecting it the value for both pressure control and to Control of injectors A used.
In
Das
Schaltmittel
Liefert
die Mengensteuerung
In
Besonders
vorteilhaft ist es, wenn jeweils noch eine gleitende Mittelwertbildung über wenigstens
zwei zeitsynchron erfaßte
Druckwerte erfolgt. Dies bedeutet, daß neben dem in Schritt
Zur
Erfassung des Drucks zur Bereitstellung an die Mengenberechnung
wird wie folgt vorgegangen: In einem ersten Schritt
Claims (6)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19735561A DE19735561B4 (en) | 1997-08-16 | 1997-08-16 | Method and device for controlling an internal combustion engine |
GB9817300A GB2328295B (en) | 1997-08-16 | 1998-08-07 | Method of and control means for controlling an internal combustion engine |
FR9810202A FR2767358B1 (en) | 1997-08-16 | 1998-08-07 | METHOD AND DEVICE FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE |
JP10229698A JPH11153054A (en) | 1997-08-16 | 1998-08-14 | Control method and device of internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19735561A DE19735561B4 (en) | 1997-08-16 | 1997-08-16 | Method and device for controlling an internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19735561A1 DE19735561A1 (en) | 1999-02-18 |
DE19735561B4 true DE19735561B4 (en) | 2007-12-20 |
Family
ID=7839176
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19735561A Expired - Fee Related DE19735561B4 (en) | 1997-08-16 | 1997-08-16 | Method and device for controlling an internal combustion engine |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPH11153054A (en) |
DE (1) | DE19735561B4 (en) |
FR (1) | FR2767358B1 (en) |
GB (1) | GB2328295B (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19857971A1 (en) * | 1998-12-16 | 2000-06-21 | Bosch Gmbh Robert | Controlling an IC engine esp. for IC engine with common rail fuel injection system so that at least one pump delivers fuel in storage |
DE19857972B4 (en) * | 1998-12-16 | 2009-03-12 | Robert Bosch Gmbh | Method and device for controlling an internal combustion engine |
FR2799544B1 (en) * | 1999-10-08 | 2002-01-04 | Siemens Automotive Sa | METHOD FOR MEASURING THE FUEL PRESSURE OF AN ELECTROMAGNETIC FUEL INJECTOR IN ONE OF THE CYLINDERS OF A DIRECT INJECTION INTERNAL COMBUSTION ENGINE |
DE19948971A1 (en) | 1999-10-12 | 2001-04-19 | Bosch Gmbh Robert | Method and device for controlling an internal combustion engine |
JP3511492B2 (en) * | 1999-12-14 | 2004-03-29 | 三菱電機株式会社 | Fuel injection control device for in-cylinder injection engine |
JP4374695B2 (en) * | 2000-02-23 | 2009-12-02 | マツダ株式会社 | Engine control device |
DE10016900C2 (en) * | 2000-04-05 | 2003-06-05 | Bosch Gmbh Robert | Method for controlling a direct injection internal combustion engine |
JP4900287B2 (en) | 2008-03-05 | 2012-03-21 | 株式会社デンソー | Fuel supply control device and fuel supply system using the same |
DE102010043374A1 (en) | 2010-11-04 | 2012-05-10 | Robert Bosch Gmbh | Fuel injection system of an internal combustion engine, and method for controlling the selbigen |
DE102019206482A1 (en) * | 2019-05-06 | 2020-11-12 | Robert Bosch Gmbh | Method for determining a fuel pressure in a high-pressure accumulator for equidistant crankshaft angle positions |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2727094A1 (en) * | 1976-06-15 | 1978-01-05 | Rca Corp | ARRANGEMENT FOR REQUESTING SIGNALS |
US5445019A (en) * | 1993-04-19 | 1995-08-29 | Ford Motor Company | Internal combustion engine with on-board diagnostic system for detecting impaired fuel injectors |
DE19548278A1 (en) * | 1995-12-22 | 1997-06-26 | Bosch Gmbh Robert | Method of managing IC engine with high pressure fuel injection esp engine with common-rail system |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3077298B2 (en) * | 1991-08-30 | 2000-08-14 | 株式会社デンソー | Accumulation type fuel injection device for internal combustion engine |
IT1266892B1 (en) * | 1994-07-22 | 1997-01-21 | Fiat Ricerche | ELECTRONIC SYSTEM FOR DYNAMIC CONTROL OF THE INJECTION PRESSURE IN A COMMON MANIFOLD INJECTION SYSTEM. |
-
1997
- 1997-08-16 DE DE19735561A patent/DE19735561B4/en not_active Expired - Fee Related
-
1998
- 1998-08-07 GB GB9817300A patent/GB2328295B/en not_active Expired - Fee Related
- 1998-08-07 FR FR9810202A patent/FR2767358B1/en not_active Expired - Fee Related
- 1998-08-14 JP JP10229698A patent/JPH11153054A/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2727094A1 (en) * | 1976-06-15 | 1978-01-05 | Rca Corp | ARRANGEMENT FOR REQUESTING SIGNALS |
US5445019A (en) * | 1993-04-19 | 1995-08-29 | Ford Motor Company | Internal combustion engine with on-board diagnostic system for detecting impaired fuel injectors |
DE19548278A1 (en) * | 1995-12-22 | 1997-06-26 | Bosch Gmbh Robert | Method of managing IC engine with high pressure fuel injection esp engine with common-rail system |
Also Published As
Publication number | Publication date |
---|---|
JPH11153054A (en) | 1999-06-08 |
FR2767358B1 (en) | 2001-05-25 |
GB2328295A (en) | 1999-02-17 |
DE19735561A1 (en) | 1999-02-18 |
GB2328295B (en) | 2000-03-22 |
FR2767358A1 (en) | 1999-02-19 |
GB9817300D0 (en) | 1998-10-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |