DE3914264C1 - - Google Patents

Info

Publication number
DE3914264C1
DE3914264C1 DE3914264A DE3914264A DE3914264C1 DE 3914264 C1 DE3914264 C1 DE 3914264C1 DE 3914264 A DE3914264 A DE 3914264A DE 3914264 A DE3914264 A DE 3914264A DE 3914264 C1 DE3914264 C1 DE 3914264C1
Authority
DE
Germany
Prior art keywords
gas temperature
exhaust gas
internal combustion
combustion engine
exhaust
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
Application number
DE3914264A
Other languages
German (de)
Inventor
Karl-Heinz Dipl.-Ing. 7000 Stuttgart De Hoffmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daimler Benz AG filed Critical Daimler Benz AG
Priority to DE3914264A priority Critical patent/DE3914264C1/de
Priority to GB9008501A priority patent/GB2230874A/en
Priority to IT47886A priority patent/IT1241574B/en
Priority to FR9005385A priority patent/FR2646472A1/en
Application granted granted Critical
Publication of DE3914264C1 publication Critical patent/DE3914264C1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F02D41/008—Controlling each cylinder individually
    • F02D41/0085—Balancing of cylinder outputs, e.g. speed, torque or air-fuel ratio
    • 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
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
    • F02D41/1441—Plural sensors
    • F02D41/1443—Plural sensors with one sensor per cylinder or group of cylinders
    • 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
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1446—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being exhaust temperatures

Landscapes

  • 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)

Abstract

To regulate the injection quantity of solenoid-valve-controlled fuel-injection devices each consisting of a pump and nozzle 2, 3, 4, and 5 for respective cylinders of an internal-combustion engine, in order to eliminate the irregular running of the internal combustion engine, the exhaust-gas temperature of each cylinder is measured by sensors 16, 17, 18, 19, the actual value of exhaust 1 as temperature is compared with a desired value, filed in a characteristics store in a control unit 6, and in the event of a deviation the injection quantity is regulated to the desired value by changing the activation time of the solenoid valve, 7, 8, 9 and 10. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren zum Regeln der Ein­ spritzmenge an einer aus Pumpe und Düse bestehenden mag­ netventilgesteuerten Kraftstoffeinspritzvorrichtung für luftverdichtende, selbstzündende mehrzylindrige Brenn­ kraftmaschinen gemäß den im Oberbegriff des Patentan­ spruchs 1 angegebenen Merkmalen.The invention relates to a method for regulating the A amount of spray on a pump and nozzle netventil controlled fuel injector for air-compressing, self-igniting multi-cylinder burner engines according to the preamble of patent pronounced 1 characteristics.

Bei dem aus der DE-OS 19 16 167 bekannten Verfahren ist mit einem Betriebsdaten der Brennkraftmaschine erfassenden elektronischen Steuergerät durch Anpassen der Öffnungs­ zeitpunkte der Steuerventile (Einlaß-, Auslaßventile) und des Einspritzzeitpunktes des Kraftstoffes eine beliebige Regelung durchführbar, wobei als Betätigungseinrichtung für die Kraftstoffeinspritzung ein von dem Steuergerät schaltbares Magnetventil verwendet ist. Mit den von der Brennkraftmaschine abgegriffenen Daten wie Drehzahl, Last, Rauchentwicklung, Temperaturen im Verbrennungsraum und/ oder in der Abgasleitung oder dgl. kann die Güte der Ver­ brennung überwacht und geregelt werden.In the process known from DE-OS 19 16 167 with an operating data of the internal combustion engine electronic control unit by adjusting the opening timing of the control valves (intake, exhaust valves) and any time of fuel injection Regulation feasible, being as an actuator for fuel injection from the control unit switchable solenoid valve is used. With the of the  Data tapped from the internal combustion engine, such as speed, load, Development of smoke, temperatures in the combustion chamber and / or in the exhaust pipe or the like. The quality of the ver combustion can be monitored and regulated.

Mit Maßnahmen dieser Art konnte jedoch in der Praxis eine Unregelmäßigkeit des Motorlaufs in bestimmten Drehzahlbe­ reichen nicht vermieden werden.With measures of this type, however, in practice one could Irregularity of engine running at certain speed not be avoided.

Der Erfindung liegt daher die Aufgabe zugrunde, mit ein­ fachen Mitteln zu ermöglichen, daß im gesamten Drehzahl­ bereich ein gleichmäßiger Lauf der Brennkraftmaschine si­ chergestellt ist.The invention is therefore based on the object fold means to enable that in the entire speed range of smooth running of the internal combustion engine si is created.

Zur Lösung der Aufgabe dienen die im Kennzeichen des Pa­ tentanspruchs 1 angegebenen Merkmale.To solve the problem, use the in the characteristics of Pa Features 1.

Der Vorteil der Erfindung liegt darin, daß die Einspritz­ menge jedes einzelnen Zylinders während des Betriebes der Brennkraftmaschine geändert und somit Mengenstreuungen von Zylinder zu Zylinder ausgeregelt werden können. Eine Re­ gelung der Einspritzmenge am Einzelzylinder ist bis zu hohen Drehzahlen hin möglich. Es kann sogar ein Abgleichen der Pumpe und Düse untereinander am Pumpenprüfstand vor dem Motoreinbau entfallen, da auftretende Ungleichmäßig­ keiten der Einspritzmenge als Ursache von unvermeidlichen Fertigungstoleranzen der Pumpe und Düse untereinander ausgeregelt werden können.The advantage of the invention is that the injection quantity of each individual cylinder during the operation of the Internal combustion engine changed and thus spread of quantities Cylinder to cylinder can be adjusted. A re The injection quantity on the single cylinder is up to possible at high speeds. It can even be a match the pump and nozzle with each other on the pump test bench there is no need to install the motor, as this occurs unevenly of the injection quantity as the cause of inevitable  Manufacturing tolerances of the pump and nozzle with each other can be corrected.

Aus der DE 33 03 617 A1 ist noch ein Verfahren zur Rege­ lung von Betriebsparameter einer selbstzündenden Brenn­ kraftmaschine bekannt, bei dem als Meßgröße zur Charakte­ risierung des Betriebszustandes der Brennkraftmaschine die Abgastemperatur herangezogen wird. Dieses Verfahren reicht aber allein nicht aus, im gesamten Drehzahlbereich einen gleichmäßigen Lauf der Brennkraftmaschine zu gewähr­ leisten. Außerdem kann am Pumpenprüfstand vor dem Motoreneinbau auf ein Abgleichen der Pumpe und Düse nicht verzichtet werden.From DE 33 03 617 A1 is still a method for Rege the operating parameters of a self-igniting burner Engine known, in which as a parameter for the character rization of the operating state of the internal combustion engine Exhaust gas temperature is used. This procedure is enough but not alone, in the entire speed range one to ensure smooth running of the internal combustion engine Afford. In addition, on the pump test bench before Do not install the motor to adjust the pump and nozzle to be dispensed with.

In dem Unteranspruch ist noch eine vorteilhafte Weiter­ bildung beansprucht.An advantageous further is in the subclaim education claimed.

Der Gegenstand der Erfindung ist anhand eines in der Zeichnung schematisch dargestellten Ausführungsbeispieles nachfolgend näher beschrieben.The object of the invention is based on a Drawing schematically illustrated embodiment described in more detail below.

Eine magnetventilgesteuerte Kraftstoffeinspritzvorrichtung für eine mehrzylindrige Brennkraftmaschine 1 besteht im wesentlichen aus der Anzahl der Zylinder entsprechenden Pumpe - Düsen 2, 3, 4, 5, von denen jede mit einem von einem elektronischen Steuergerät 6 ansteuerbaren Magnet­ ventil 7, 8, 9, 10 versehen ist. A solenoid-valve-controlled fuel injection device for a multi-cylinder internal combustion engine 1 is composed essentially of the number of cylinders corresponding pump - nozzles 2, 3, 4, 5, each of which is provided with a controllable by an electronic control unit 6 solenoid valve 7, 8, 9, 10 .

Das Steuergerät 6 mit seinem Kennfeldspeicher enthält be­ reits ein vorab optimal ermitteltes Spritzmengenkennfeld, dessen unterschiedlich dargestellten Spritzmengenkennli­ nien "Q" in Abhängigkeit von der jeweiligen Abgastempera­ tur "T Abg." und Drehzahl "n" aufgetragen sind.The control unit 6 with its map memory already contains a previously optimally determined injection quantity map, the differently illustrated injection quantity lines " Q " depending on the respective exhaust gas temperature " T Abg. " And speed " n " are plotted.

Jede an der Brennkraftmaschine 1 angeflanschte Einzellei­ tung 11, 12, 13, 14 eines Abgaskrümmers 15 ist mit einem die Abgastemperatur erfassenden Sensor 16, 17, 18, 19 verse­ hen. Die jeweilige Abgastemperatur wird vorteilhafterweise unmittelbar stromab der nicht dargestellten Auslaßventile gemessen und als momentan vorliegende Werte bzw. Ist-Werte ebenso wie die momentan vorliegenden Werte von Drehzahl und Last mit den im Kennfeld abgespeicherten Soll-Werten verglichen und bei Abweichungen als Folge von Unregelmä­ ßigkeiten von Zylinder zu Zylinder durch Änderung der vom Steuergerät ausgehenden Ansteuerzeit des Magnetventils so lange nachgeregelt, bis die Mengenstreuungen abgebaut bzw. beseitigt sind.Each flanged to the internal combustion engine 1 single line device 11 , 12 , 13 , 14 of an exhaust manifold 15 is provided with a sensor 16 , 17 , 18 , 19 which detects the exhaust gas temperature. The respective exhaust gas temperature is advantageously measured immediately downstream of the exhaust valves, not shown, and compared as the current values or actual values as well as the current values of speed and load with the target values stored in the map and, in the event of deviations, as a result of irregularities of Cylinder to cylinder readjusted by changing the triggering time of the solenoid valve from the control unit until the quantity spread is reduced or eliminated.

Da ein weiterer Einfluß auf die Abgastemperatur der Spritzbeginn ist, sollte dieser bei Verwendung der Abgas­ temperatur als Maß für Spritzmengenstreuungen zweckmäßi­ gerweise konstant gehalten werden. Als System bietet sich hierfür an, aus dem Verlauf des Ansteuerstromes des Magnetventiles das Schließen dieses Magnetventiles zu er­ mitteln und als Rückmeldung für den Spritzbeginn zu ver­ wenden. Der Spritzbeginn läßt sich damit exakt einregeln und ein von hier aus störender Einfluß auf die Abgastem­ peratur kann gar nicht erst auftreten.Since another influence on the exhaust gas temperature of the Spraying should start when using the exhaust gas expedient temperature as a measure for spray quantity spread sometimes be kept constant. As a system for this, from the course of the drive current of the Solenoid valve to close this solenoid valve average and to be used as feedback for the start of spraying turn. The start of spraying can thus be precisely regulated  and from here a disturbing influence on the exhaust gas temperature cannot even occur.

Claims (2)

1. Verfahren zum Regeln der Einspritzmenge an einer aus Pumpe und Düse bestehenden magnetventilgesteuerten Kraft­ stoffeinspritzvorrichtung für luftverdichtende, selbst­ zündende mehrzylindrige Brennkraftmaschinen, bei dem von Sensoren ermittelte Werte von Drehzahl, Last und Abgas­ temperatur gewonnen und in einem elektronischen Steuerge­ rät zu Ausgangssignalen für die Ansteuerung eines mit der Einspritzdüse in Wirkverbindung stehenden Magnetventiles verarbeitet werden, dadurch gekennzeichnet, daß die Abgastemperatur jedes Zylinders der Brennkraftma­ schine gemessen, der jeweilige Ist-Wert dieser Abgastem­ peratur mit dem in einem Kennfeldspeicher abgelegten Sollwert der vorab ermittelten Abgastemperatur verglichen und bei Abweichung die Einspritzmenge durch Änderung der Ansteuerzeit des Magnetventiles auf den Sollwert nachge­ regelt wird.1.Procedure for regulating the injection quantity on a solenoid valve-controlled fuel injection device consisting of a pump and nozzle for air-compressing, self-igniting multi-cylinder internal combustion engines, in which values of speed, load and exhaust gas temperature determined by sensors are obtained and in an electronic control unit advises on output signals for the control one of the solenoid valves in operative connection with the injection nozzle are processed, characterized in that the exhaust gas temperature of each cylinder of the internal combustion engine is measured, the respective actual value of this exhaust gas temperature is compared with the setpoint value of the previously determined exhaust gas temperature stored in a map memory and, in the event of a deviation, the injection quantity Change of the control time of the solenoid valve is adjusted to the setpoint. 2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, daß die Abgastemperatur unmittelbar stromab der den ein­ zelnen Zylindern zugeordneten Auslaßventilen gemessen wird.2. The method according to claim 1, characterized,  that the exhaust gas temperature immediately downstream of the one exhaust cylinders assigned to individual cylinders becomes.
DE3914264A 1989-04-29 1989-04-29 Expired - Lifetime DE3914264C1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE3914264A DE3914264C1 (en) 1989-04-29 1989-04-29
GB9008501A GB2230874A (en) 1989-04-29 1990-04-17 Regulating the injection quantity of a fuel-injection device
IT47886A IT1241574B (en) 1989-04-29 1990-04-24 PROCEDURE FOR THE QUANTITATIVE ADJUSTMENT OF A FUEL INJECTION DEVICE IN AN INTERNAL COMBUSTION ENGINE
FR9005385A FR2646472A1 (en) 1989-04-29 1990-04-27 METHOD FOR ADJUSTING THE INJECTION QUANTITY IN A FUEL INJECTION DEVICE CONSISTING OF A PUMP AND INJECTORS AND CONTROL BY ELECTROMAGNETIC VALVES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3914264A DE3914264C1 (en) 1989-04-29 1989-04-29

Publications (1)

Publication Number Publication Date
DE3914264C1 true DE3914264C1 (en) 1990-09-13

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ID=6379793

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3914264A Expired - Lifetime DE3914264C1 (en) 1989-04-29 1989-04-29

Country Status (4)

Country Link
DE (1) DE3914264C1 (en)
FR (1) FR2646472A1 (en)
GB (1) GB2230874A (en)
IT (1) IT1241574B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0785343A1 (en) * 1996-01-17 1997-07-23 Yamaha Hatsudoki Kabushiki Kaisha Internal combustion engine
EP1422407A1 (en) * 2001-08-29 2004-05-26 Niigata Power Systems Co., Ltd. ENGINE&comma; ENGINE EXHAUST TEMPERATURE CONTROLLING DEVICE AND CONTROLLING METHOD
FR2851615A1 (en) * 2003-02-21 2004-08-27 Renault Sa Diesel engine fuel injection capacity regulating device, has exhaust gas temperature sensor at inlet of compressor turbine, and temperature feedback system with regulator to supply corrected value of fuel injected capacity to engine
EP1574694A1 (en) * 2004-02-24 2005-09-14 Renault s.a.s. Apparatus and method controlling metering of injected fuel in a diesel engine
EP1818529A1 (en) * 2004-11-25 2007-08-15 Hitachi Construction Machinery Co., Ltd. Device and method for protecting engine of construction machine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6002252A (en) 1991-05-22 1999-12-14 Wolff Controls Corporation Compact sensing apparatus having transducer and signal conditioner with a plurality of mounting pins
US6000384A (en) * 1998-03-06 1999-12-14 Caterpillar Inc. Method for balancing the air/fuel ratio to each cylinder of an engine
US20020152985A1 (en) * 2001-04-20 2002-10-24 Wolff Peter U. System, apparatus including on-board diagnostics, and methods for improving operating efficiency and durability of compression ignition engines
GB2491592A (en) * 2011-06-07 2012-12-12 Gm Global Tech Operations Inc Method of diagnosing and recovering an injector failure in an internal combustion engine.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1916167A1 (en) * 1969-03-28 1970-10-15 Daimler Benz Ag Device for controlling an internal combustion engine
DE3303617A1 (en) * 1983-02-03 1984-08-09 Robert Bosch Gmbh, 7000 Stuttgart Method and device for the control of operating parameters of a compression-ignition internal combustion engine

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NL236024A (en) * 1959-02-11 1900-01-01
DE2144395A1 (en) * 1971-06-11 1973-03-08 Volkswagenwerk Ag COMBUSTION MACHINE WITH AT LEAST ONE EXHAUST GAS PURIFICATION ARRANGEMENT
US4128998A (en) * 1972-06-26 1978-12-12 Nippon Soken, Inc. Overheat preventing system for exhaust gas purifier of vehicles
DE2330258A1 (en) * 1973-06-14 1975-01-09 Bosch Gmbh Robert DEVICE FOR EXHAUST GAS DETOXIFICATION FROM COMBUSTION MACHINERY
DE3022427A1 (en) * 1980-06-14 1982-01-07 Robert Bosch Gmbh, 7000 Stuttgart CONTROL DEVICE FOR FUEL-AIR MIXTURE TREATMENT IN INTERNAL COMBUSTION ENGINES
JPS60195349A (en) * 1984-03-17 1985-10-03 Toyota Motor Corp Fuel supply control device in internal-combustion engine
JPH01253543A (en) * 1988-04-01 1989-10-09 Fuji Heavy Ind Ltd Air-fuel ratio control device for engine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1916167A1 (en) * 1969-03-28 1970-10-15 Daimler Benz Ag Device for controlling an internal combustion engine
DE3303617A1 (en) * 1983-02-03 1984-08-09 Robert Bosch Gmbh, 7000 Stuttgart Method and device for the control of operating parameters of a compression-ignition internal combustion engine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0785343A1 (en) * 1996-01-17 1997-07-23 Yamaha Hatsudoki Kabushiki Kaisha Internal combustion engine
EP1422407A1 (en) * 2001-08-29 2004-05-26 Niigata Power Systems Co., Ltd. ENGINE&comma; ENGINE EXHAUST TEMPERATURE CONTROLLING DEVICE AND CONTROLLING METHOD
EP1422407A4 (en) * 2001-08-29 2009-10-28 Niigata Power Systems Co Ltd Engine, engine exhaust temperature controlling device and controlling method
FR2851615A1 (en) * 2003-02-21 2004-08-27 Renault Sa Diesel engine fuel injection capacity regulating device, has exhaust gas temperature sensor at inlet of compressor turbine, and temperature feedback system with regulator to supply corrected value of fuel injected capacity to engine
EP1574694A1 (en) * 2004-02-24 2005-09-14 Renault s.a.s. Apparatus and method controlling metering of injected fuel in a diesel engine
EP1818529A1 (en) * 2004-11-25 2007-08-15 Hitachi Construction Machinery Co., Ltd. Device and method for protecting engine of construction machine
EP1818529A4 (en) * 2004-11-25 2011-04-13 Hitachi Construction Machinery Device and method for protecting engine of construction machine

Also Published As

Publication number Publication date
GB9008501D0 (en) 1990-06-13
IT9047886A0 (en) 1990-04-24
GB2230874A (en) 1990-10-31
FR2646472A1 (en) 1990-11-02
IT1241574B (en) 1994-01-18
IT9047886A1 (en) 1991-10-24

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