DE3247186C2 - Control arrangement for a supercharged internal combustion engine - Google Patents

Control arrangement for a supercharged internal combustion engine

Info

Publication number
DE3247186C2
DE3247186C2 DE3247186A DE3247186A DE3247186C2 DE 3247186 C2 DE3247186 C2 DE 3247186C2 DE 3247186 A DE3247186 A DE 3247186A DE 3247186 A DE3247186 A DE 3247186A DE 3247186 C2 DE3247186 C2 DE 3247186C2
Authority
DE
Germany
Prior art keywords
internal combustion
combustion engine
control arrangement
air
space cam
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
Application number
DE3247186A
Other languages
German (de)
Other versions
DE3247186A1 (en
Inventor
Karl 7000 Stuttgart Maderthaner
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 DE3247186A priority Critical patent/DE3247186C2/en
Publication of DE3247186A1 publication Critical patent/DE3247186A1/en
Application granted granted Critical
Publication of DE3247186C2 publication Critical patent/DE3247186C2/en
Expired 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
    • F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
    • F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
    • F02D1/08—Transmission of control impulse to pump control, e.g. with power drive or power assistance
    • F02D1/10—Transmission of control impulse to pump control, e.g. with power drive or power assistance mechanical
    • 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
    • F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
    • F02D1/06—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered by means dependent on pressure of engine working fluid
    • F02D1/065—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered by means dependent on pressure of engine working fluid of intake of air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D23/00—Controlling engines characterised by their being supercharged
    • F02D23/02—Controlling engines characterised by their being supercharged the engines being of fuel-injection type
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/447—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston means specially adapted to limit fuel delivery or to supply excess of fuel temporarily, e.g. for starting of the engine
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Abstract

Eine Regelanordnung für eine aufgeladene Brennkraftmaschine, insbesondere für eine Dieselbrennkraftmaschine, umfaßt eine einen Drehzahlregler aufweisende Einspritzpumpe, sowie einen brennkraftmaschinendrehzahlabhängig bewegbaren Vollastanschlag zur Begrenzung bzw. Freigabe der Einspritzmenge. Der Vollastanschlag ist z.B. als Raumnocken ausgebildet, der in Richtung seiner zweiten Dimension von der sich analog zum Ladegrad ändernden Luftmasse abhängig ist. Zur optimalen Luftmassenmessung ist die luftmassenabhängige Formgebung der Hüllfläche des Raumnockens in Abhängigkeit der Kenngrößen Brennkraftmaschinendrehzahl, Ladeluftdruck und Ladelufttemperatur beschreibbar.A control arrangement for a supercharged internal combustion engine, in particular for a diesel internal combustion engine, comprises an injection pump having a speed controller and a full-load stop that can be moved as a function of the engine speed to limit or release the injection quantity. The full load stop is designed, for example, as a space cam, which in the direction of its second dimension is dependent on the air mass, which changes in line with the charge level. For optimal air mass measurement, the air-mass-dependent shape of the envelope surface of the space cam can be described as a function of the parameters engine speed, charge air pressure and charge air temperature.

Description

1515th

2020th

Die Erfindung bezieht sich auf eine Regelanordnung für eine aufgeladene Brennkraftmaschine gemäß Oberbegriff des Patentanspruches 1.The invention relates to a control arrangement for a supercharged internal combustion engine according to the preamble of claim 1.

Durch die DE-OS 26 37 520 ist eine solche Regelanordnung für einen aufgeladenen Dieselmotor mit einer Einspritzpumpe bekannt, bei der die maximale Fördermenge in Abhängigkeit von der Motordrehzahl und der dem Motor zugeführten Luftmenge über einen Raumnocken gesteuert wird. Der in zwei Richtungen verstellbare Raumnocken besitzt eine Steuerfläche, deren Formgebung in der einen Betätigungsrichtung abhängig von der Molordrehzahl und in der anderen Betätigungsrichtung abhängig von der zugeführten Lufimenge die zugehörige Kraftstoffmenge bestimmt. Die so die Kraftstoffördermenge in Abhängigkeit von der Drehzahl und der zugeführten Lufimenge bestimmenden Punkte der Steuerfläche werden mittels eines Tastfingers abgegriffen und auf das Regelgestänge übertragen.DE-OS 26 37 520 is such a control arrangement for a supercharged diesel engine with a Injection pump known, in which the maximum delivery rate as a function of the engine speed and the The amount of air supplied to the engine is controlled via a space cam. The one adjustable in two directions The space cam has a control surface, the shape of which is dependent on one actuation direction of the molar speed and in the other direction of actuation depending on the amount of air supplied, the associated amount of fuel is determined. The so the fuel delivery rate depending on the speed and the amount of air supplied, determining points of the Control surfaces are picked up by means of a tactile finger and transferred to the control linkage.

Die am Raumnocken einzustellende Luftmenge wird über einen in der Ansaugleitung angeordneten Absolutdruckmesser ermittelt, dessen Druckwerte in Stellwege umgesetzt werden, die nach Korrektur in einer die Ansaugluftlemperatur erfassenden Korrektureinheit den Raumnocken in eine der ermittelten Luftmenge entsprechenden Lage verstellen.The amount of air to be set on the room cam is measured by an absolute pressure meter located in the suction line determined, the pressure values of which are converted into travel ranges, which after correction in a, the intake air temperature Detecting correction unit converts the room cam into a corresponding to the determined air volume Adjust position.

Die bekannte Regelanordnung arbeitet insofern ungenau, als durch die Verwendung der Ansauglufttemperatur die vom Lader geförderte tatsächliche Ladeluftmasse nicht mit der von der Regelanordnung gemessenen Ladeluftmenge übereinstimmt. Hinzu kommt, daß die bekannte Regelanordnung zur Berücksichtigung der Ansaugtemperatur eine besondere Korrektureinrichtung erfordert, durch welche der Bauaufwand der Regelanordnung erhöht wird.The known control arrangement works inaccurately as a result of the use of the intake air temperature the actual charge air mass conveyed by the supercharger does not match that measured by the control arrangement Charge air volume matches. In addition, the known control arrangement to take into account the Intake temperature requires a special correction device, through which the construction effort of the control arrangement is increased.

Auch aus der DE-OS 26 59 498 geht eine ähnliche Regelanordnung mit als Raumnocken ausgebildeten Vollastanschlag für einen aufgeladenen Dieselmotor hervor.Also from DE-OS 26 59 498 is a similar control arrangement with designed as a space cam Full load stop for a supercharged diesel engine.

Der Erfindung liegt daher die Aufgabe zugrunde, die aus der DE-OS 26 37 520 bekannte Regelanordnung derart zu verbessern, daß die am Raumnocken abgegriffene Luftmasse der vom Lader tatsächlich geförderten Luftmasse entspricht.The invention is therefore based on the object of the control arrangement known from DE-OS 26 37 520 to be improved in such a way that the air mass tapped at the space cam is that actually promoted by the loader Corresponds to air mass.

Erfindungsgemäß wird diese Aufgabe durch die Merkmale im kennzeichnenden Teil des PatentanspruAccording to the invention, this object is achieved by the features in the characterizing part of the patent claim

ches 1 gelöst.ches 1 solved.

Mit der erfindungsgemäßen Regelanordnung kann durch Berücksichtigung der Kenngrößen »Brennkraftmaschinendrehzahl«, »Ladeluftdiuck« und »Ladelufttemperatur« der einer aufgeladenen Brennkraftmaschine zugeführte Kraftstoff auf die jeweils in den Zylindern vorhandene Luftmasse so exakt abgestimmt werden, daß die an die Brennkraftmaschine gestellten Forderungen hinsichtlich der Verbrennungsrückstände, der Abgastemperatur, der Rauchemission mit größerer Sicherheit eingehalten werden könnenWith the control arrangement according to the invention, by taking into account the parameters »internal combustion engine speed«, "Charge air pressure" and "charge air temperature" are those of a charged internal combustion engine the fuel supplied can be precisely matched to the air mass in each cylinder, that the requirements placed on the internal combustion engine with regard to combustion residues, the exhaust gas temperature, smoke emissions can be complied with with greater certainty

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestelltIn the drawing is an embodiment of the invention shown

Die Regelanordnung für eine nicht gezeichnete aufgeladene Dieselbrennkraftmaschine besteht aus einer Einspritzpumpe 1 mit einer Regelstange 2, die federnd abgestützt ist. Mit der P.egelstange 2 steht ein Abtaststift 6 in Verbindung, welcher mit einem Raumnocken 7 als Vollastanschlag zusammenwirkt. Der Raumnocken 7 weist dabei eine Hüllfläche 8 auf, die aus den Kenngrößen »Brennkraftmaschinendrehzahl«, »Ladeluftdruck« und »Temperatur der Ladeluft« unmittelbar stromab des Laders gebildet ist und insgesamt die vom Lader tatsächlich geförderte Luftmasse darstellt.The control arrangement for a supercharged diesel internal combustion engine (not shown) consists of one Injection pump 1 with a control rod 2 which is resiliently supported. There is a follower pin with the control rod 2 6 in connection, which cooperates with a space cam 7 as a full load stop. The space cam 7 has an envelope surface 8, which is derived from the parameters "engine speed", "charge air pressure" and "temperature of the charge air" is formed immediately downstream of the charger and that of the charger as a whole represents actually transported air mass.

Die Verstellung der Regelstange 2 erfolgt von einem Gaspedal 10 aus. Bei Vollast legt sich der Abtaststift 6 gegen die Hüllfläche 8 des Raumnockens 7 an, wodurch die Versteilbewegung der Regelstange unterbrochen und damit die Kraftstoffördermenge begrenzt wird.The adjustment of the control rod 2 takes place from an accelerator pedal 10. At full load, the follower pin 6 lies down against the envelope surface 8 of the space cam 7, whereby the adjustment movement of the control rod is interrupted and thus the fuel delivery rate is limited.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (1)

Patentanspruch:Claim: Regelanordnung für eine aufgeladene Brennkraftmaschine, insbesondere für eine Dieselbrennkraftmaschine, mit einer einen Drehzahlregler aufweisenden Einspritzpumpe und mit einem Vollastanschlag zur Begrenzung der Einspritzmenge, wobei der Volllastanschlag als Raumnocken ausgebildet ist, dessen Hüllfläche in Richtung einer seiner Dimensionen in Abhängigkeit von den Kenngrößen »Brennkraftmaschinendrehzahl«, »Ladeluftdruck« und »Verbrennungslufttemperatur« beschreibbar ist, wobei die betreffende Dimension des Raumnockens durch das Zusammenwirken dieser Kenngrößen unmittelbar luftmassenabhängig verstellt wird, dadurch gekennzeichnet, daß die verbrennungslufttemperaturabhängige Kenngröße Jie Temperatur der Ladeluft unmittelbar stromab des Laders ist.Control arrangement for a supercharged internal combustion engine, in particular for a diesel internal combustion engine, with a speed controller Injection pump and with a full load stop to limit the injection quantity, the full load stop is designed as a space cam, the envelope surface in the direction of one of its dimensions in Dependence on the parameters "engine speed", "charge air pressure" and "combustion air temperature" can be described, whereby the relevant dimension of the space cam is represented by the The interaction of these parameters is adjusted directly depending on the air mass, characterized in that that the combustion air temperature dependent parameter Jie temperature of Charge air is immediately downstream of the charger. 1010
DE3247186A 1982-12-21 1982-12-21 Control arrangement for a supercharged internal combustion engine Expired DE3247186C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3247186A DE3247186C2 (en) 1982-12-21 1982-12-21 Control arrangement for a supercharged internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3247186A DE3247186C2 (en) 1982-12-21 1982-12-21 Control arrangement for a supercharged internal combustion engine

Publications (2)

Publication Number Publication Date
DE3247186A1 DE3247186A1 (en) 1984-02-16
DE3247186C2 true DE3247186C2 (en) 1985-06-13

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ID=6181228

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3247186A Expired DE3247186C2 (en) 1982-12-21 1982-12-21 Control arrangement for a supercharged internal combustion engine

Country Status (1)

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DE (1) DE3247186C2 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2637520A1 (en) * 1976-08-20 1978-02-23 Bosch Gmbh Robert CONTROL DEVICE FOR CHARGED DIESEL FUEL INJECTION ENGINES
DE2650247A1 (en) * 1976-11-02 1978-05-11 Bosch Gmbh Robert PROCESS AND DEVICE FOR LIMITING THE MAXIMUM FUEL FLOW RATE OF THE FUEL INJECTION PUMP OF A DIESEL ENGINE
DE2659498A1 (en) * 1976-12-30 1978-07-06 Daimler Benz Ag REGULATORY ARRANGEMENT FOR A CHARGED DIESEL ENGINE

Also Published As

Publication number Publication date
DE3247186A1 (en) 1984-02-16

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Legal Events

Date Code Title Description
OAV Applicant agreed to the publication of the unexamined application as to paragraph 31 lit. 2 z1
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8330 Complete disclaimer