DE3007337A1 - DEVICE FOR CONTROLLING THE START OF SPRAYING IN AN INTERNAL COMBUSTION ENGINE - Google Patents

DEVICE FOR CONTROLLING THE START OF SPRAYING IN AN INTERNAL COMBUSTION ENGINE

Info

Publication number
DE3007337A1
DE3007337A1 DE19803007337 DE3007337A DE3007337A1 DE 3007337 A1 DE3007337 A1 DE 3007337A1 DE 19803007337 DE19803007337 DE 19803007337 DE 3007337 A DE3007337 A DE 3007337A DE 3007337 A1 DE3007337 A1 DE 3007337A1
Authority
DE
Germany
Prior art keywords
sensor
internal combustion
combustion engine
injection
knocking
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.)
Granted
Application number
DE19803007337
Other languages
German (de)
Other versions
DE3007337C2 (en
Inventor
Jörg Dipl.-Ing. 7130 Mühlacker Bonitz
Robert 7141 Benningen Entenmann
Rochus 7014 Kornwestheim Knab
Siegfried Dr.-Ing. 7141 Schwieberdingen Rohde
Herbert Dr.-Ing. 7000 Stuttgart Schramm
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE19803007337 priority Critical patent/DE3007337A1/en
Priority to JP2439381A priority patent/JPS56132426A/en
Priority to GB8106021A priority patent/GB2070138B/en
Publication of DE3007337A1 publication Critical patent/DE3007337A1/en
Application granted granted Critical
Publication of DE3007337C2 publication Critical patent/DE3007337C2/de
Priority to JP10458788U priority patent/JPS6432444U/ja
Granted 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
    • F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
    • F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
    • F02D35/027—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions using knock sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
    • F02D1/16—Adjustment of injection timing
    • F02D1/18—Adjustment of injection timing with non-mechanical means for transmitting control impulse; with amplification of control impulse

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)
  • Combined Controls Of Internal Combustion Engines (AREA)

Description

κ. 6102κ. 6102

25.1.1980 Mü/KöJanuary 25, 1980 Mü / Kö

ROBERT BOSCH GMBH, 7000 Stuttgart 1ROBERT BOSCH GMBH, 7000 Stuttgart 1

Einrichtung zur Regelung des Spritzbeginns bei einer Brennkraftmaschine mit Selbstzündung Device for regulating the start of injection in an internal combustion engine with compression ignition

Stand der TechnikState of the art

Bei Brennkraftmaschinen mit Selbstzündung kann vornehmlich beim Start und Warmlauf "Klopfen oder Klingeln" und "harter Gang" festgestellt werden. Bei kaltem Motor benötigt das Gemisch bis zur Selbstzündung eine größere Zeit als bei warmem, so daß im Mittel ein größerer Volumenanteil zur Zündung aufbereitet ist. Die dadurch sehr schnellen Verbrennungsabläufe führen zu hohen Druckgradienten im Zylinderraum (harter Gang) oder zu Doppelzündungen (Klopfen).In internal combustion engines with compression ignition, "knocking or ringing" and "hard gear" can be determined. When the engine is cold, the mixture needs a larger one before self-ignition Time than when it is warm, so that on average a larger volume fraction is prepared for ignition. The thereby very fast combustion processes lead to high pressure gradients in the cylinder chamber (hard gear) or to double ignitions (Beat).

Diese Vorgänge sind stark vom Zeitpunkt des Einspritzbeginns abhängig. Durch einen "spaten" Spritzbeginn wird durch die kürzere Aufbereitungszeit für das Gemisch der harte Gang sowie Klopfen vermieden. Dadurch vermindert sich deutlich die mechanische Belastung des Triebwerks und die Geräuschemission.These processes are heavily dependent on the point in time at which injection begins. With a "late" start of injection due to the shorter preparation time for the mixture of hard walking and knocking avoided. This significantly reduces the mechanical load on the engine and the noise emission.

130037/0203130037/0203

Es ist Aufgabe der Erfindung, ausgehend von der serienmäßigen Kennlinie des Spritzverstellers eine Regelung zur "Spätverstellung" des Spritzbeginns zu schaffen, mit der harter Gang und Klopfen weitgehend vermieden wird.It is the object of the invention to provide a control based on the standard characteristic of the injection adjuster to create "late adjustment" of the start of injection, with the hard gait and knocking is largely avoided.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäße Einrichtung verzögert den Einspritzbeginn von Brennkraftmaschinen mit Selbstzündung in der Weise, daß harter Gang und Klopfen weitgehend vermieden und somit die Triebwerksbelastung und Geräuschemission stark herabgesetzt werden.The device according to the invention delays the start of injection of internal combustion engines with compression ignition Way that hard gear and knocking largely avoided and thus the engine load and noise emissions can be greatly reduced.

Der harte Gang sowie Klopfen kann mit einem oder mehreren Sensoren festgestellt werden, die notwendige elektronische Schaltung ist leicht in eine elektronische Schaltung zur Steuerung des Einspritzvorgangs integrierbar.The hard gait as well as knocking can be detected with one or more sensors, the necessary electronic ones The circuit can easily be integrated into an electronic circuit for controlling the injection process.

Die serienmäßige Kennlinie für den Spritzbeginn wird durch die erfindungsgemäße Einrichtung nicht verändert.The standard characteristic curve for the start of injection is not changed by the device according to the invention.

Beschreibung eines AusführungsbeispielsDescription of an exemplary embodiment

In der einzigen Figur der Zeichnung ist grot schematisch ein Ausführungsbeispiel der Erfindung dargestellt. Dabei ist mit 10 eine Brennkraftmaschine mit Selbstzündung bezeichnet, mit 11 deren Einspritzanlage, mit 12 und 13 eine Luftansaug- bzw. Abgasleitung. Ein Spritzversteller, d.h. ein Porderbeginnstellglied, ist mit l4 bezeichnet.In the single figure of the drawing, grot is schematic an embodiment of the invention shown. Here, 10 denotes an internal combustion engine with compression ignition, with 11 their injection system, with 12 and 13 an air intake or exhaust line. An injection adjuster, i.e., a port start actuator, is denoted by l4.

An geeigneten Sielle .der,Brennkraftmaschine ID ist einAt suitable Sielle .der, internal combustion engine ID is a

° (zTB. Druck- oder BeschleunigungssensorΓ Klopfsensor 15/angebracht. Dessen Ausgangssignal wird in einer elektronischen Schaltung 16 in ein Signal umgeformt, ° (e.g. pressure or acceleration sensorΓ knock sensor 15 / attached. Its output signal is converted into a signal in an electronic circuit 16,

130037/0203130037/0203

das mit hartem Gang und Klopfen korreliert. Dieses Signal auf einer Leitung 17 kann elektromechanisch oder elektronisch so umgeformt werden, daß es zur Ansteuerung des Förderbeginnstellglieds 14 verwendet werden kann.that correlates with hard walking and knocking. This signal on a line 17 can be electromechanical or be electronically reshaped so that it can be used to control the delivery start actuator 14.

Es kann zweckmäßig sein, statt einem mehrere Sensoren l8 a-n geeigneter Stelle am Motor 10 anzubringen. Dadurch kann die Erkennungssicherheit erhöht werden. Die Ausgangssignale der Sensoren können beispielsweise addiert oder im Zeitmultiplexverfahren verarbeitet werden. Das gewonnene Signal wird wieder umgeformt in ein mit hartem Gang und Klopfen korrelierendes Signal.It can be expedient to attach several sensors 18 a-n to a suitable location on the motor 10 instead of one. Through this the detection reliability can be increased. The output signals of the sensors can, for example, be added or processed in the time division multiplex method. The signal obtained is converted back into a hard one Signal correlating gear and knocking.

Wird nun durch die Sensoren 15 bzw. 18 und die Umformschaltung 16 harter Gang oder klopfen erkannt, so wird der Einspritzbeginn kontinuierlich oder schrittweise in Richtung spät verstellt. Tritt dann infolge dieser Änderung oder infolge einer Änderung der Motorbetriebsweise kein harter Gang oder Klopfen mehr auf, wird der Einspritzbeginn kontinuierlich oder schrittweise wieder in Richtung Früh bis maximal zur serienmäßigen Kennlinie verstellt. Dadurch wird harter Gang und Klopfen weitgehend vermieden.Is now through the sensors 15 or 18 and the conversion circuit 16 hard gear or knocking is detected, the start of injection is continuously or gradually in Direction adjusted late. Then occurs as a result of this change or as a result of a change in engine operation no more hard gear or knocking, the start of injection is continuous or gradual again in the early direction up to a maximum of the standard characteristic. This will make hard walking and knocking largely avoided.

130037/0203130037/0203

Claims (7)

25.1.1980 Mü/KöJanuary 25, 1980 Mü / Kö ROBERT BOSCH GMBH, 7OOO Stuttgart 1ROBERT BOSCH GMBH, 7OOO Stuttgart 1 AnsprücheExpectations ( l.y Einrichtung zur Regelung des Spritzbeginns bei einer Brennkraftmaschine mit Selbstzündung abhängig von wenigstens der Drehzahl als Betriebskenngröße, dadurch gekennzeichnet, daß als weiteres Regelkriterium wenigstens ein Signal eines Klopfsensors (15, 18) dient.(l.y device for regulating the start of injection for a Internal combustion engine with compression ignition as a function of at least the speed as an operating parameter, characterized in that that at least one signal from a knock sensor (15, 18) is used as a further control criterion. 2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß als Sensor ein Drucksensor am Zylinderraum verwendet wird.2. Device according to claim 1, characterized in that a pressure sensor on the cylinder chamber is used as the sensor will. 3. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß als Sensor ein Beschleunigungssensor an der Brennkraftmaschine verwendet wird.3. Device according to claim 1, characterized in that an acceleration sensor on the internal combustion engine is used as the sensor is used. 4. Einrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß Druck- und Beschleunigungssensoren vorgesehen sind. *4. Device according to claim 2 or 3, characterized in that pressure and acceleration sensors are provided are. * 130037/0203130037/0203 5. Einrichtung nach wenigstens einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß bei aus dem Sensorsignal erkanntem harten Gang und/oder Klopfen der Spritzbeginn ausgehend vom Normalwert, in Richtung Spät verschiebbar ist,5. Device according to at least one of claims 1 to 4, characterized in that when from the sensor signal recognized hard gait and / or knocking, starting from the normal value, the start of injection can be shifted in the direction of late, 6. Einrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Spätverstellung und die nachfolgende Rücknahme dieser Verstellung in Stufen oder kontinuierlich erfolgt.6. Device according to claim 5, characterized in that the late adjustment and the subsequent withdrawal of this adjustment takes place in stages or continuously. 7. Einrichtung nach wenigstens einem der Ansprüche 1 bis 63 dadurch gekennzeichnet, daß die Signale mehrerer Sensoren nacheinander oder als Summe verarbeitet werden.7. Device according to at least one of claims 1 to 6 3, characterized in that the signals of several sensors are processed one after the other or as a sum. 130037/0203130037/0203
DE19803007337 1980-02-27 1980-02-27 DEVICE FOR CONTROLLING THE START OF SPRAYING IN AN INTERNAL COMBUSTION ENGINE Granted DE3007337A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE19803007337 DE3007337A1 (en) 1980-02-27 1980-02-27 DEVICE FOR CONTROLLING THE START OF SPRAYING IN AN INTERNAL COMBUSTION ENGINE
JP2439381A JPS56132426A (en) 1980-02-27 1981-02-23 Injection start controller for self-igniting internal combustion engine
GB8106021A GB2070138B (en) 1980-02-27 1981-02-26 Control means for regulating injection start times in a compression ignition engine
JP10458788U JPS6432444U (en) 1980-02-27 1988-08-09

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19803007337 DE3007337A1 (en) 1980-02-27 1980-02-27 DEVICE FOR CONTROLLING THE START OF SPRAYING IN AN INTERNAL COMBUSTION ENGINE

Publications (2)

Publication Number Publication Date
DE3007337A1 true DE3007337A1 (en) 1981-09-10
DE3007337C2 DE3007337C2 (en) 1988-04-21

Family

ID=6095682

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19803007337 Granted DE3007337A1 (en) 1980-02-27 1980-02-27 DEVICE FOR CONTROLLING THE START OF SPRAYING IN AN INTERNAL COMBUSTION ENGINE

Country Status (3)

Country Link
JP (2) JPS56132426A (en)
DE (1) DE3007337A1 (en)
GB (1) GB2070138B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3540813A1 (en) * 1985-11-16 1987-05-21 Daimler Benz Ag Method for adjustment of the start of delivery on an injection timing device of an injection pump of an air-compressing internal combustion engine
DE4002228A1 (en) * 1990-01-26 1991-08-01 Bosch Gmbh Robert METHOD FOR RECOGNIZING WORKING TIMES IN A FOUR-STOCK ENGINE

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56138427A (en) * 1980-03-28 1981-10-29 Nissan Motor Co Ltd Knocking controlled diesel engine
JPS58186135U (en) * 1982-06-04 1983-12-10 マツダ株式会社 Diesel engine fuel injection timing control device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2470709A (en) * 1946-05-23 1949-05-17 Charles W Macmillan Engine combustion controlling device
DE2210400B2 (en) * 1971-03-06 1974-03-07 Nippondenso Co., Ltd., Kariya, Aichi (Japan) Control device of a fuel injection device for internal combustion engines

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54113728A (en) * 1978-02-24 1979-09-05 Sanwa Seiki Mfg Co Ltd Automatic fuel injection timing control system for engine fuel injection pump
JPS5620763A (en) * 1979-07-31 1981-02-26 Nissan Motor Co Ltd Controller for internal combustion engine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2470709A (en) * 1946-05-23 1949-05-17 Charles W Macmillan Engine combustion controlling device
DE2210400B2 (en) * 1971-03-06 1974-03-07 Nippondenso Co., Ltd., Kariya, Aichi (Japan) Control device of a fuel injection device for internal combustion engines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3540813A1 (en) * 1985-11-16 1987-05-21 Daimler Benz Ag Method for adjustment of the start of delivery on an injection timing device of an injection pump of an air-compressing internal combustion engine
DE4002228A1 (en) * 1990-01-26 1991-08-01 Bosch Gmbh Robert METHOD FOR RECOGNIZING WORKING TIMES IN A FOUR-STOCK ENGINE

Also Published As

Publication number Publication date
JPS6432444U (en) 1989-03-01
DE3007337C2 (en) 1988-04-21
JPS56132426A (en) 1981-10-16
GB2070138B (en) 1983-09-07
GB2070138A (en) 1981-09-03

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