EP0764777B1 - Method and apparatus for controlling an internal combustion engine - Google Patents
Method and apparatus for controlling an internal combustion engine Download PDFInfo
- Publication number
- EP0764777B1 EP0764777B1 EP96110218A EP96110218A EP0764777B1 EP 0764777 B1 EP0764777 B1 EP 0764777B1 EP 96110218 A EP96110218 A EP 96110218A EP 96110218 A EP96110218 A EP 96110218A EP 0764777 B1 EP0764777 B1 EP 0764777B1
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- EP
- European Patent Office
- Prior art keywords
- fuel
- internal combustion
- metered
- combustion engine
- fault
- 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
-
- 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
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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
- F02D41/22—Safety or indicating devices for abnormal conditions
-
- 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
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- 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
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
- F02D2041/223—Diagnosis of fuel pressure sensors
Definitions
- the invention relates to a method and a device for controlling an internal combustion engine according to the generic terms of independent claims.
- Such a method and such a device for control an internal combustion engine are known.
- a safety shut-off valve is provided that in the event of a fault a safety shutdown is guaranteed.
- Such one Safety shutoff valve is used in diesel internal combustion engines referred to as ELAB.
- DE 43 44 190 A1 is a Fuel injector with high pressure accumulator known.
- the memory injection system is with a High pressure fuel pump for continuous filling a high-pressure fuel accumulator.
- downstream of the fuel storage are via lines Injectors on the internal combustion engine with fuel provided.
- Injectors differential pressure and / or flow-controlled check valves upstream.
- the Check valves block the fuel supply safe if an injector fails.
- the invention has for its object in a method and a device for controlling an internal combustion engine a safety shutdown of the type mentioned to ensure the fastest possible shutdown guaranteed. This task is carried out in the Features characterized independent claims solved.
- the procedure according to the invention has the advantage that Fast shutdown even with so-called common rail systems is possible in the event of an error. At the same time, the Pressure in the high pressure section is quickly reduced in the event of a fault. The The usual shut-off valve and its control can be omitted, which means a considerable saving in costs. On Test of the facility is not necessary as this is through normal operation is ensured.
- FIG. 1 shows an injection system according to the invention and Figure 2 different Injection pulses plotted over time.
- the device according to the invention is based on the example a self-igniting internal combustion engine, where the fuel metering by means of a solenoid valve is controlled.
- the embodiment shown in Figure 1 relates to a so-called common rail system.
- the invention Approach is not on these systems limited.
- suction line 105 receives fresh air and emits 110 exhaust gases via an exhaust line.
- the internal combustion engine shown is a four-cylinder internal combustion engine. Every cylinder the Internal combustion engine is an injector 120, 121, 122 and 123 assigned. The injectors are connected via solenoid valves 130, 131, 132 and 133 fuel metered. The fuel arrives from a so-called rail 135 via the injectors 120, 121, 122 and 123 into the cylinders of internal combustion engine 100.
- the fuel in the rail 135 is from a high pressure pump 145 brought to an adjustable pressure.
- the high pressure pump 145 is via a solenoid valve 150 with a fuel delivery pump 155 connected.
- the fuel delivery pump 155 communicates with a fuel tank 160.
- the valve 150 comprises a coil 152.
- the solenoid valves 130, 131, 132 and 133 include coils 140, 141, 142 and 143 that be supplied with current by means of an output stage 175 can.
- the output stage 175 is preferably in a control unit 170 arranged, which corresponds to the coil 152 controls.
- a sensor 177 is provided, which the pressure in Rail 135 detects and a corresponding signal to the control unit 170 directs.
- An error detection 176 evaluates various signals and in the event of a fault, the power amplifier 175 and the valve 152 with a corresponding signal.
- each Flow restrictors 180, 181, 182 and 183 arranged there is between the rail 135 and the injectors 120 to 123 each Flow restrictors 180, 181, 182 and 183 arranged.
- the flow limiter can also between the solenoid valve and the rail or between the solenoid valve and the respective injector his.
- the flow restrictors are designed such that the connection between the Rail 135 and the injectors interrupt if more than one through this line predetermined amount of fuel flows.
- the flow restrictor closes when a particular one Amount of fuel would be metered. That amount is like that chosen that it is larger than the largest in the error-free Operation occurring quantity. It is therefore larger than that Full load quantity or the start quantity.
- the crowd is also like this chosen to be less than the amount at which the Internal combustion engine is damaged.
- the fuel delivery pump 155 delivers the fuel from the reservoir via valve 150 to high pressure pump 145.
- the high pressure pump 145 builds a predefinable pressure in the rail 135 on.
- Pressure values of about 10 to 2000 bar achieved.
- the corresponding Solenoid valves 130 to 133 controlled.
- the procedure according to the invention is now as follows. Recognize that Error monitoring 175 an error, the error monitoring switches 175 to an emergency driving program. This means, that the valve 150 is brought into its closed state becomes. This ensures that no more fuel is provided by the fuel pump 155. As another Measure will be the solenoid valves 140, 141, 142 and 143 controlled so that they the fuel metering release in an angular position of the crankshaft, in the the injection makes no contribution to the torque of the internal combustion engine supplies. It is particularly advantageous if the fuel metering in the area of bottom dead center is released. This means the fuel metering takes place immediately before opening the exhaust valves Internal combustion engine.
- the fuel metering is carried out as large as possible Angular range, so that the injected amount a larger Assumes value as the amount that high pressure pump 145 delivers.
- Figure 2a are the angular ranges at which the fuel metering usually done by crankshaft degrees applied.
- the fuel is usually metered in the area of the top dead center OT of the respective cylinder.
- the duration of the metering is between 0 ° and 40 ° crankshaft.
- FIG. 2b The situation in the event of a fault is plotted in FIG. 2b.
- the injection now takes place in the area of bottom dead center UT, the duration of the injection being essential is longer than in normal operation.
- the duration in the event of an error the injection is chosen so that by the injector flowing fuel takes such a value that address the flow restrictor and thereby the other Cut off the fuel supply to the cylinders.
- the Amount at which the flow limiters respond so too choose that this quantity does not damage the Internal combustion engine occurs.
- the injection for emergency shutdown is preferably carried out outside the compression stroke, that is, between 0 degrees Crankshaft and 270 degree crankshaft. As particularly cheap was the angular range from approx. 100 ° to 200 ° crankshaft recognized after top dead center.
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- Engineering & Computer Science (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)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Steuerung einer Brennkraftmaschine gemäß den Oberbegriffen der unabhängigen Ansprüche.The invention relates to a method and a device for controlling an internal combustion engine according to the generic terms of independent claims.
Ein solches Verfahren und eine solche Vorrichtung zur Steuerung einer Brennkraftmaschine sind bekannt. Üblicherweise ist ein Sicherheitsabschaltventil vorgesehen, daß im Fehlerfall eine Sicherheitsabschaltung gewährleistet. Ein solches Sicherheitsabschaltventil wird bei Dieselbrennkraftmaschinen als ELAB bezeichnet.Such a method and such a device for control an internal combustion engine are known. Usually a safety shut-off valve is provided that in the event of a fault a safety shutdown is guaranteed. Such one Safety shutoff valve is used in diesel internal combustion engines referred to as ELAB.
Bei bestimmten Einspritzsystemen, insbesondere bei sogenannten Common-Rail-Systemen ist die Verwendung eines solchen Sicherheitsabschaltventils problematisch, da ein großes Volumen an Kraftstoff, das sich unter hohem Druck befindet, zwischen dem Sicherheitsventil und den Einspritzdüsen vorhanden ist. Nach der Betätigung des Abschaltventils läuft daher der Motor noch für eine gewisse Zeit weiter, bzw. bei einem Leck tritt eine erhebliche Menge an Kraftstoff unter hohem Druck aus. With certain injection systems, especially with so-called Common rail systems is the use of one Safety shut-off valve problematic because of a large one Volume of fuel that is under high pressure between the safety valve and the injectors is. After actuation of the shut-off valve runs therefore the engine continues for a certain time, or at a significant amount of fuel is leaked high pressure.
Aus der DE 43 44 190 A1 ist eine Kraftstoffeinspritzvorrichtung mit Hochdruckspeicher bekannt. Das Speichereinspritzsystem ist mit einer Hochdruckkraftstoffpumpe zur kontinuierlichen Befüllung eines Hochdruckkraftstoffspeichers ausgerüstet. Stromabwärts des Kraftstoffspeichers werden über Leitungen Einspritzventile an der Brennkraftmaschine mit Kraftstoff versorgt. Zur Begrenzung der maximalen Durchflussmenge zu den Zylindern der Brennkraftmaschinen sind den Einspritzventilen differenzdruck- und/oder durchflussmengengesteuerte Sperrventile vorgeschaltet. Die Sperrventile stellen eine Sperrung der Kraftstoffzuführung bei Versagen eines Einspritzventils sicher. DE 43 44 190 A1 is a Fuel injector with high pressure accumulator known. The memory injection system is with a High pressure fuel pump for continuous filling a high-pressure fuel accumulator. downstream of the fuel storage are via lines Injectors on the internal combustion engine with fuel provided. To limit the maximum flow rate too the cylinders of the internal combustion engines are the Injectors differential pressure and / or flow-controlled check valves upstream. The Check valves block the fuel supply safe if an injector fails.
Der Erfindung liegt die Aufgabe zugrunde, bei einem Verfahren und einer Vorrichtung zur Steuerung einer Brennkraftmaschine der eingangs genannten Art eine Sicherheitsabschaltung zu gewährleisten, die ein möglichst schnelles Abschalten gewährleistet. Diese Aufgabe wird durch die in den unabhängigen Ansprüchen gekennzeichneten Merkmale gelöst.The invention has for its object in a method and a device for controlling an internal combustion engine a safety shutdown of the type mentioned to ensure the fastest possible shutdown guaranteed. This task is carried out in the Features characterized independent claims solved.
Die erfindungsgemäße Vorgehensweise bietet den Vorteil, daß auch bei sogenannten Common-Rail-Systemen eine schnelle Abschaltung im Fehlerfall möglich ist. Gleichzeitig wird der Druck im Hochdruckteil im Fehlerfall schnell abgebaut. Das übliche Abschaltventil sowie dessen Ansteuerung kann entfallen, was eine erhebliche Einsparung an Kosten bedeutet. Ein Test der Einrichtung ist nicht erforderlich, da dieser durch den Normalbetrieb sichergestellt ist.The procedure according to the invention has the advantage that Fast shutdown even with so-called common rail systems is possible in the event of an error. At the same time, the Pressure in the high pressure section is quickly reduced in the event of a fault. The The usual shut-off valve and its control can be omitted, which means a considerable saving in costs. On Test of the facility is not necessary as this is through normal operation is ensured.
Vorteilhafte und zweckmäßige Ausgestaltungen und Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet.Advantageous and expedient refinements and developments of the invention are in the subclaims characterized.
Die Erfindung wird nachstehend anhand der in der Zeichnung dargestellten Ausführungsformen erläutert. Es zeigen Figur 1 ein erfindungsgemäßes Einspritzsystem und Figur 2 verschiedene über der Zeit aufgetragene Einspritzimpulse. The invention is described below with reference to the drawing illustrated embodiments explained. 1 shows an injection system according to the invention and Figure 2 different Injection pulses plotted over time.
Im folgenden wird die erfindungsgemäße Vorrichtung am Beispiel einer selbstzündenden Brennkraftmaschine dargestellt, bei der die Kraftstoffzumessung mittels eines Magnetventils gesteuert wird. Die in Figur 1 dargestellte Ausführungsform betrifft ein sogenanntes Common-Rail-System. Die erfindungsgemäße Vorgehensweise ist aber nicht auf diese Systeme beschränkt.In the following, the device according to the invention is based on the example a self-igniting internal combustion engine, where the fuel metering by means of a solenoid valve is controlled. The embodiment shown in Figure 1 relates to a so-called common rail system. The invention Approach is not on these systems limited.
Mit 100 ist eine Brennkraftmaschine bezeichnet, die über
einen Ansaugleitung 105 Frischluft zugeführt bekommt und
über eine Abgasleitung 110 Abgase abgibt.With 100 an internal combustion engine is referred to
a
Bei der dargestellten Brennkraftmaschine handelt es sich um
eine Vierzylinderbrennkraftmaschine. Jedem Zylinder der
Brennkraftmaschine ist ein Injektor 120, 121, 122 und 123
zugeordnet. Den Injektoren wird über Magnetventile 130, 131,
132 und 133 Kraftstoff zugemessen. Der Kraftstoff gelangt
von einem sogenannten Rail 135 über die Injektoren 120, 121,
122 und 123 in die Zylinder der Brennkraftmaschine 100.The internal combustion engine shown is
a four-cylinder internal combustion engine. Every cylinder the
Internal combustion engine is an
Der Kraftstoff in dem Rail 135 wird von einer Hochdruckpumpe
145 auf einen einstellbaren Druck gebracht. Die Hochdruckpumpe
145 ist über ein Magnetventil 150 mit einer Kraftstofförderpumpe
155 verbunden. Die Kraftstofförderpumpe 155
steht mit einem Kraftstoffvorratsbehälter 160 in Verbindung.The fuel in the
Das Ventil 150 umfaßt eine Spule 152. Die Magnetventile 130,
131, 132 und 133 enthalten Spulen 140, 141, 142 und 143, die
mittels einer Endstufe 175 mit Strom beaufschlagt werden
können. Die Endstufe 175 ist vorzugsweise in einem Steuergerät
170 angeordnet, das entsprechend die Spule 152
ansteuert. The
Desweiteren ist ein Sensor 177 vorgesehen, der den Druck im
Rail 135 erfaßt und ein entsprechendes Signal an das Steuergerät
170 leitet.Furthermore, a sensor 177 is provided, which the pressure in
Eine Fehlererkennung 176 wertet verschiedene Signale aus und
beaufschlagt im Fehlerfall die Endstufe 175 sowie das Ventil
152 mit einem entsprechenden Signal.An
Bei einer bevorzugten Ausgestaltung ist zwischen dem Rail
135 und den Injektoren 120 bis 123 jeweils ein
Durchflußbegrenzer 180, 181, 182 und 183 angeordnet.
Vorzugsweise bilden der Injektor und der Durchflußbegrenzer
eine bauliche Einheit. Der Durchflußbegrenzer kann aber auch
jeweils zwischen dem Magnetventil und dem Rail oder zwischen
dem Magnetventil und dem jeweiligen Injektor angeordnet
sein. Die Durchflußbegrenzer sind derart ausgestaltet, daß
sie die Verbindung zwischen dem Rail 135 und dem Injektoren
unterbrechen, wenn durch diese Leitung mehr als eine
vorgegebene Kraftstoffmenge fließt. Je nach Ausgestaltung
schließt der Durchflußbegrenzer, wenn eine bestimmte
Kraftstoffmenge zugemessen würde. Diese Menge ist so
gewählt, daß sie größer ist als die größte beim fehlerfreien
Betrieb auftretende Menge. Sie ist daher größer als die
Vollastmenge bzw. die Startmenge. Die Menge ist ferner so
gewählt, daß sie kleiner ist, als die Menge, bei der die
Brennkraftmaschine beschädigt wird.In a preferred embodiment, there is between the
Diese Einrichtung arbeitet nun wie folgt. Die Kraftstofförderpumpe
155 fördert den Kraftstoff aus dem Vorratsbehälter
über das Ventil 150 zur Hochdruckpumpe 145. Die Hochdruckpumpe
145 baut in dem Rail 135 einen vorgebbaren Druck
auf. Üblicherweise werden im Rail 135 bei Systemen für
fremdgezündete Brennkraftmaschinen Druckwerte von etwa 30
bis 100 bar und bei selbstzündenden Brennkraftmaschinen
Druckwerte von etwa 1000 bis 2000 bar erzielt. This facility now works as follows. The
Durch Bestromen der Spulen 140 bis 143 werden die entsprechenden
Magnetventile 130 bis 133 angesteuert. Die Ansteuersignale
für die Spulen legen dabei den Einspritzbeginn
und das Einspritzende des Kraftstoffs durch die Injektoren
120 bis 123 fest.By energizing the
Tritt bei einem solchen System ein Fehler auf, hierbei kann
es sich beispielsweise um einen Defekt im Bereich der
Steuereinheit 170, des Hochdruckteils und/oder der Einspritzventile
handeln, so muß gewährleistet werden, daß die
Brennkraftmaschine sicher zum Stehen kommt.If an error occurs with such a system, this can
it is, for example, a defect in the area of
Insbesondere bei Systemen, bei denen die Hochdruckpumpe 145
unmittelbar von der Brennkraftmaschine angetrieben wird, und
damit die Hochdruckpumpe 145 bei laufender Brennkraftmaschine
ständig weiterfördert, ist eine Abschaltung der
Hochdruckpumpe 145 nicht möglich. Daher muß durch andere
Maßnahmen gewährleistet werden, daß der Druck im Hochdruckteil
schnell abgebaut und die Kraftstoffzufuhr unterbunden
wird.In particular in systems in which the
Insbesondere ist dies erforderlich, wenn im Hochdruckteil ein Leck auftritt und der Kraftstoff mit hohem Druck in den Motorraum austritt bzw. wenn Kraftstoff durch einen defekten Injektor mit hohem Druck permanent in einen Zylinder gelangt. In diesen Fällen muß der Druck im Hochdruckteil rasch abgebaut werden.This is especially necessary if in the high pressure part a leak occurs and the fuel is under high pressure in the Engine compartment leaks or if fuel is caused by a defective one High pressure injector permanently in a cylinder arrives. In these cases, the pressure in the high pressure part be dismantled quickly.
Erfindungsgemäß wird nun wie folgt vorgegangen. Erkennt die
Fehlerüberwachung 175 einen Fehler, so schaltet die Fehlerüberwachung
175 auf ein Notfahrprogramm um. Dies bedeutet,
daß das Ventil 150 in seinen geschlossenen Zustand gebracht
wird. Damit wird gewährleistet, daß kein weiterer Kraftstoff
von der Kraftstoffpumpe 155 bereitgestellt wird. Als weitere
Maßnahme werden die Magnetventile 140, 141, 142
und 143 derart angesteuert, daß sie die Kraftstoffzumessung
in einer Winkelstellung der Kurbelwelle freigeben, in der
die Einspritzung keinen Beitrag zum Drehmoment der Brennkraftmaschine
liefert. Besonders vorteilhaft ist es, wenn
die Kraftstoffzumessung im Bereich des unteren Totpunktes
freigegeben wird. Dies bedeutet die Kraftstoffzumessung
erfolgt unmittelbar vor dem Öffnen der Auslaßventile der
Brennkraftmaschine.The procedure according to the invention is now as follows. Recognize that
Error monitoring 175 an error, the error monitoring switches
175 to an emergency driving program. This means,
that the
Bei einer Ausgestaltung der Erfindung ist vorgesehen, daß lediglich die zweite Maßnahme durchgeführt wird. Bei dieser Ausführungsform kann das Ventil eingespart werden.In one embodiment of the invention it is provided that only the second measure is carried out. At this Embodiment, the valve can be saved.
Die Kraftstoffzumessung erfolgt in einem möglichst großen
Winkelbereich, damit die eingespritzte Menge einen größeren
Wert annimmt als die Menge, die die Hochdruckpumpe 145 fördert.
Durch diese Maßnahme wird zum einen der Druck im Hochdruckteil,
insbesondere im Rail 135 rasch abgebaut und
gleichzeitig kommt die Brennkraftmaschine zum stehen.The fuel metering is carried out as large as possible
Angular range, so that the injected amount a larger
Assumes value as the amount that
In Figur 2a sind die Winkelbereiche, bei denen die Kraftstoffzumessung üblicherweise erfolgt, über Grad Kurbelwelle aufgetragen. Üblicherweise erfolgt die Kraftstoffzumessung im Bereich des oberen Totpunktes OT des jeweiligen Zylinders. Die Dauer der Zumessung beträgt dabei zwischen 0° und 40° Kurbelwelle.In Figure 2a are the angular ranges at which the fuel metering usually done by crankshaft degrees applied. The fuel is usually metered in the area of the top dead center OT of the respective cylinder. The duration of the metering is between 0 ° and 40 ° crankshaft.
In Figur 2b sind die Verhältnisse im Fehlerfall aufgetragen. Die Einspritzung erfolgt nun im Bereich des unteren Totpunktes UT, wobei die Dauer der Einspritzung wesentlich länger ist als im Normalbetrieb.The situation in the event of a fault is plotted in FIG. 2b. The injection now takes place in the area of bottom dead center UT, the duration of the injection being essential is longer than in normal operation.
Besonders vorteilhaft ist es, wenn im Fehlerfall die Dauer der Einspritzung so gewählt wird, daß die durch den Injektor strömende Kraftstoffmenge einen solchen Wert annimmt, daß die Durchflußbegrenzer ansprechen und dadurch die weitere Kraftstoffzufuhr zu den Zylindern unterbinden. Dabei ist die Menge, bei der die Durchflußbegrenzer ansprechen so zu wählen, daß bei dieser Menge keine Beschädigung der Brennkraftmaschine auftritt.It is particularly advantageous if the duration in the event of an error the injection is chosen so that by the injector flowing fuel takes such a value that address the flow restrictor and thereby the other Cut off the fuel supply to the cylinders. Here is the Amount at which the flow limiters respond so too choose that this quantity does not damage the Internal combustion engine occurs.
Besonders vorteilhaft ist es, daß wenn lediglich ein Injektor als defekt erkannt wurde, nur dieser Injektor derart angesteuert wird, das der diesem Injektor zugeordnete Durchflußbegrenzer den Kraftstofffluß unterbindet.It is particularly advantageous that if only one Only the injector was recognized as defective is controlled in such a way that that assigned to this injector Flow limiter prevents fuel flow.
Die Einspritzung zur Notabschaltung erfolgt vorzugsweise außerhalb des Verdichtungstaktes, das heißt, zwischen 0 Grad Kurbelwelle und 270 Grad Kurbelwelle. Als besonders günstig wurde der Winkelbereich von ca. 100° bis 200° Kurbelwelle nach dem oberen Totpunkt erkannt.The injection for emergency shutdown is preferably carried out outside the compression stroke, that is, between 0 degrees Crankshaft and 270 degree crankshaft. As particularly cheap was the angular range from approx. 100 ° to 200 ° crankshaft recognized after top dead center.
Claims (8)
- Method for controlling an internal combustion engine (100), in which fuel is fed by a pump (145) into a high-pressure part (135), and the metering of fuel into the individual cylinders can be controlled by means of solenoid valves (130, 131, 132 and 133), characterized in that in the event of a fault fuel is metered in within an angular range of the crankshaft in which the amount of fuel metered in does not make any contribution to the torque.
- Method according to Claim 1, characterized in that in the event of a fault the metering takes place in the region of the bottom dead centre (UT) of the respective cylinder.
- Method according to Claim 1 or 2, characterized in that a quantity of fuel which leads to a pressure drop in the high-pressure part (135) is metered in.
- Method according to Claim 1 or 2, characterized in that a quantity of fuel at which a flow limiter (180, 181, 182 and 183) suppresses the flow of fuel in the high-pressure part is metered in.
- Method according to Claim 4, characterized in that a quantity of fuel at which the flow limiter (180, 181, 182 and 183) suppresses the flow of fuel is metered only to the cylinder to which a fault has been assigned.
- Method according to one of the preceding claims, characterized in that in the event of a fault a longer actuation time of the injectors than in normal operation is selected.
- Method according to one of the preceding claims, characterized in that the fuel is metered in in an angular range between 100° and 200° crankshaft after the top dead centre of the respective cylinder.
- Device for controlling an internal combustion engine (100), in which a pump (145) feeds fuel into a high-pressure part (135) and solenoid valves (130, 131, 132 and 133) control the metering of fuel into the individual cylinders, characterized in that there are means (170) which, in the event of a fault, meter in fuel within an angular range of the crankshaft in which the fuel which is metered in does not make any contribution to the torque.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19535418 | 1995-09-23 | ||
| DE19535418 | 1995-09-23 | ||
| DE19605417 | 1996-02-14 | ||
| DE19605417 | 1996-02-14 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0764777A2 EP0764777A2 (en) | 1997-03-26 |
| EP0764777A3 EP0764777A3 (en) | 1998-12-23 |
| EP0764777B1 true EP0764777B1 (en) | 2003-03-19 |
Family
ID=26018872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96110218A Expired - Lifetime EP0764777B1 (en) | 1995-09-23 | 1996-06-25 | Method and apparatus for controlling an internal combustion engine |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0764777B1 (en) |
| JP (1) | JP4071838B2 (en) |
| KR (1) | KR100413711B1 (en) |
| DE (2) | DE59610232D1 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2762358B1 (en) * | 1997-04-16 | 1999-07-09 | Peugeot | DEVICE FOR MONITORING THE OPERATION OF A DIESEL ENGINE, ESPECIALLY A MOTOR VEHICLE |
| JP3713918B2 (en) * | 1997-08-29 | 2005-11-09 | いすゞ自動車株式会社 | Engine fuel injection method and apparatus |
| DE19945375A1 (en) * | 1999-09-22 | 2001-03-29 | Opel Adam Ag | Method for controlling the fuel injection in a direct injection diesel engine |
| JP4343762B2 (en) * | 2004-05-12 | 2009-10-14 | 三菱電機株式会社 | Fuel injection control device for internal combustion engine |
| JP4221332B2 (en) * | 2004-05-12 | 2009-02-12 | 三菱電機株式会社 | Fuel injection control device for internal combustion engine |
| CN100422526C (en) * | 2005-06-23 | 2008-10-01 | 通用汽车环球科技运作公司 | Dynamic engine pumping work estimation algorithm |
| JP4922906B2 (en) | 2007-12-10 | 2012-04-25 | 日立オートモティブシステムズ株式会社 | High pressure fuel supply device and control device for internal combustion engine |
| DE102008001444A1 (en) | 2008-04-29 | 2009-11-05 | Robert Bosch Gmbh | Method for determining an overpressure in a fuel accumulator of an injection system of an internal combustion engine |
| EP2123890A1 (en) | 2008-05-21 | 2009-11-25 | GM Global Technology Operations, Inc. | A method and system for controlling operating pressure in a common-rail fuel injection system, particularly for a diesel engine |
| JP4909973B2 (en) * | 2008-11-14 | 2012-04-04 | 日立オートモティブシステムズ株式会社 | Control device for internal combustion engine |
| US9121364B2 (en) * | 2011-05-13 | 2015-09-01 | Toyota Jidosha Kabushiki Kaisha | Control apparatus for internal combustion engine |
| WO2014008936A1 (en) * | 2012-07-12 | 2014-01-16 | Wärtsilä Switzerland Ltd. | Method for controlling a defective injector |
| JP6303944B2 (en) * | 2014-09-16 | 2018-04-04 | 株式会社デンソー | Fuel injection control device |
| DE102019208018A1 (en) * | 2019-05-31 | 2020-12-03 | Robert Bosch Gmbh | Method for detecting a leaked fuel injector |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3033214B2 (en) * | 1991-02-27 | 2000-04-17 | 株式会社デンソー | Accumulation type fuel supply method and apparatus by a plurality of fuel pumping means, and abnormality determination apparatus in equipment having a plurality of fluid pumping means |
| DE4229409C2 (en) * | 1992-09-03 | 2003-06-18 | Bayerische Motoren Werke Ag | Safety device for automatically switching off a fuel pump of an internal combustion engine |
| DE4344190A1 (en) * | 1993-12-23 | 1995-06-29 | Orange Gmbh | Fuel injector with high pressure fuel accumulator |
-
1996
- 1996-06-25 EP EP96110218A patent/EP0764777B1/en not_active Expired - Lifetime
- 1996-06-25 DE DE59610232T patent/DE59610232D1/en not_active Expired - Lifetime
- 1996-08-08 JP JP21013796A patent/JP4071838B2/en not_active Expired - Fee Related
- 1996-09-07 DE DE19636397A patent/DE19636397A1/en not_active Withdrawn
- 1996-09-20 KR KR1019960041020A patent/KR100413711B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09112319A (en) | 1997-04-28 |
| DE59610232D1 (en) | 2003-04-24 |
| JP4071838B2 (en) | 2008-04-02 |
| KR100413711B1 (en) | 2004-03-30 |
| EP0764777A3 (en) | 1998-12-23 |
| KR970016070A (en) | 1997-04-28 |
| EP0764777A2 (en) | 1997-03-26 |
| DE19636397A1 (en) | 1997-03-27 |
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