EP1020635A2 - Intake air duct for diesel engines - Google Patents

Intake air duct for diesel engines Download PDF

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Publication number
EP1020635A2
EP1020635A2 EP99121637A EP99121637A EP1020635A2 EP 1020635 A2 EP1020635 A2 EP 1020635A2 EP 99121637 A EP99121637 A EP 99121637A EP 99121637 A EP99121637 A EP 99121637A EP 1020635 A2 EP1020635 A2 EP 1020635A2
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EP
European Patent Office
Prior art keywords
exhaust gas
intake pipe
pipe section
control valve
section
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
EP99121637A
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German (de)
French (fr)
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EP1020635A3 (en
EP1020635B1 (en
Inventor
Andreas Trawinski
Heinrich Dismon
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Pierburg GmbH
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Pierburg GmbH
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Publication of EP1020635A3 publication Critical patent/EP1020635A3/en
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Publication of EP1020635B1 publication Critical patent/EP1020635B1/en
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Classifications

    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10222—Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/11—Manufacture or assembly of EGR systems; Materials or coatings specially adapted for EGR systems
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/21—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system with EGR valves located at or near the connection to the intake system
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/72—Housings
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1034—Manufacturing and assembling intake systems
    • F02M35/10347—Moulding, casting or the like
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/50—Arrangements or methods for preventing or reducing deposits, corrosion or wear caused by impurities
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/66—Lift valves, e.g. poppet valves
    • F02M26/69—Lift valves, e.g. poppet valves having two or more valve-closing members
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/104—Intake manifolds
    • F02M35/1045—Intake manifolds characterised by the charge distribution between the cylinders/combustion chambers or its homogenisation

Definitions

  • the invention relates to a combustion air intake pipe section for diesel engines according to the preamble of claim 1.
  • the proportion of the excess air sucked in is greater, the lower is the load on the diesel engine, d. H. the higher the load on the diesel engine, the more the excess air is less proportional to the intake air. Furthermore, the takes in the Combustion chambers of the engine discharged excess air when the load of the engine rises.
  • the exhaust gas recirculation ratio decreases (which is indicated by the Return exhaust gas quantity plus the intake air quantity divided return exhaust gas quantity is defined) and vice versa.
  • valves are connected to one another in this way coupled that the amount of exhaust gas decreases as the fresh air throughput increases and vice versa.
  • the choice of different valves allows a mutual mechanical Coupling that enables an extremely compact unit.
  • valve rod has two valve disks that interact with two valve seats, are adjusted simultaneously and open and close the valve seats and thus control the connection between the exhaust gas inlet and outlet, the Exhaust outlet is connected directly to an air intake pipe of the internal combustion engine. Extreme contamination can also occur here, since the valve rod protrudes directly into the air intake pipe.
  • the object of the invention is to create a generic one Combustion air intake pipe section for diesel engines so that a cost-effective structural design in cast design and additionally an improved, protection against dirt can be achieved.
  • FIG. 1 shows a section of a combustion air intake pipe section 1 for diesel internal combustion engines, with an air damper throttling the air flow rate 2 and one downstream thereof
  • Existing exhaust gas recirculation introduction 3 which by an exhaust gas recirculation control valve 4th is checked, air damper 2 and control valve 4 in accordance with control signals can be actuated by electrical or pneumatic actuators 5, 6.
  • the intake pipe section 1 as a cast housing 7 is formed and has receiving recesses 8, 9 into which an exhaust gas recirculation introduction insert 10 and an exhaust gas recirculation control valve insert 11 and used Fit sections 12, 13 are held in the receiving recesses 8, 9.
  • the receiving recesses 8, 9 have a housing opening 14 are connected to each other, the housing opening 14 by a lead-in section collar 15 of the exhaust gas recirculation insert 10 compared to the Combustion air intake pipe section 1 is closed and the introduction section an exhaust gas inlet funnel 16 that forms in the combustion air flow direction into the intake pipe section 1 merging exhaust gas introduction section 17 passes.
  • the receiving recess 9 for the control valve 4 a Has housing opening 18, which in a connection section 19 for one Exhaust gas supply line shown merges and that the housing opening 18 by one Introductory section collar 20 of the control valve insert 11 is closed.
  • the introduction section forms an exhaust gas inlet funnel 21, which enters a valve chamber 22 transforms.
  • the valve chamber 22 is via a double valve arrangement 23 with a collar through the introduction section 15 and 20 and the snug portion 13 of the control valve insert 11 closed recess 9 connected housing chamber 24 connected.
  • the control valve insert 11 has a seal that is sealed off from the housing chamber 24 Actuating chamber 25, which is opposite the actuator 6 Atmosphere is sealed, with actuating rods 26 and 27 of the double valve arrangement 23 and the actuating device 6 each protrude into the actuation chamber 25 and there contact each other.
  • FIG. 1 the receiving recess 9 with the control valve insert 11 is parallel to Combustion air intake pipe section 1 arranged, whereas the exploded view after Fig. 2 shows an arrangement at a right angle to the intake pipe section 1. in the the rest corresponds to that of FIG. 1 and has the same numbering of the components Mistake.
  • the design according to the invention enables improved uniform distribution of the recirculated exhaust gas to the individual cylinders of the internal combustion engine.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

A diesel engine with exhaust gas recycling has the cast inlet manifold provided with connecting flanges to clamp onto corresponding flanges of the exhaust gas feed. The exhaust gas recycling valve is built into the return feed and the system has no opening for ingress of dirt etc. The recycling fitting and the inlet manifold are fastened to the cylinder head by the same fasteners.

Description

Die Erfindung betrifft einen Brennluftansaugrohrabschnitt für Dieselbrennkraftmaschinen nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a combustion air intake pipe section for diesel engines according to the preamble of claim 1.

Das Prinzip eines solchen Brennluftansaugrohrabschnitts ist beispielsweise in der DE 30 23 652 C2 beschrieben. Es heißt dort: Ein Dieselmotor wird gewöhnlich im sog. Luftüberschußbetrieb betrieben, bei dem in die Verbrennungskammern des Motors mehr Luft eingesaugt wird, als tatsächlich für die Verbrennung des in die Kammern eingespritzten Kraftstoffs notwendig ist. Demtentsprechend beruht die Abgasrückführung bei einem Dieselmotor grundsätzlich darauf, zumindest einen Teil dieser überschüssigen Luft durch zurückgeführte Abgase zu ersetzen, um damit die Qualität der aus dem Motor abgegebenen Abgase zu verbessern und in den Abgasen den Anteil schädlicher Verschmutzungsstoffe zu verringern. Demnach sollte eine Rückführungsabgasmenge geliefert werden, die von der Menge der bei den bestehenden Betriebszuständen des Motors angesaugten überschüssigen Luft abhängt.The principle of such a combustion air intake pipe section is, for example, in DE 30 23 652 C2. It says there: A diesel engine is usually used in the so-called Excess air operation operated in the combustion chambers of the engine more air is sucked in than actually for the combustion of the injected into the chambers Fuel is necessary. The exhaust gas recirculation is based accordingly in the case of a diesel engine, in principle, at least a part of this excess Replace air with recirculated exhaust gases to ensure the quality of the engine emitted exhaust gases and improve the proportion of harmful pollutants in the exhaust gases to reduce. Accordingly, a return exhaust gas quantity should be delivered be determined by the amount of the existing engine operating conditions suctioned excess air depends.

Allgemein ist der Anteil der angesaugten überschüssigen Luft um so größer, je geringer die Belastung des Dieselmotors ist, d. h. je höher die Belastung des Dieselmotors, um so geringer ist proportional zur Ansaugluft der Luftüberschuß. Ferner nimmt die in die Brennkammern des Motors eingeleitete Überschußluftmenge ab, wenn die Belastung des Motors ansteigt. Zur Abgasrückführung, bei der sich die Rückführungsabgasmenge entsprechend der Überschußluftmenge verändert, ist es daher notwendig, die Rückführungsabgasmenge in der Weise zu steuern bzw. zu regeln, daß entsprechend einer Steigerung der Motorbelastung das Abgasrückführungsverhältnis abnimmt (das als durch die Rückführungsabgasmenge zuzüglich der Ansaugluftmenge geteilte Rückführungsabgasmenge definiert ist) und umgekehrt. In general, the proportion of the excess air sucked in is greater, the lower is the load on the diesel engine, d. H. the higher the load on the diesel engine, the more the excess air is less proportional to the intake air. Furthermore, the takes in the Combustion chambers of the engine discharged excess air when the load of the engine rises. For exhaust gas recirculation, in which the recirculation exhaust gas quantity changed according to the amount of excess air, it is therefore necessary to reduce the amount of recirculated exhaust gas to control or regulate in such a way that according to an increase the engine load, the exhaust gas recirculation ratio decreases (which is indicated by the Return exhaust gas quantity plus the intake air quantity divided return exhaust gas quantity is defined) and vice versa.

Für eine optimale Versorgung eines Dieselmotors ist, wie eingangs bereits dargelegt, die Abgasrückführung so zu wählen, daß der rückgeführte Abgasanteil im Vergleich zur Frischluftmenge abnimmt, wobei unter dem Gesichtspunkt einer einfachen Steuerung sich der Abgasanteil annähernd direkt proportional zur Änderung des Stellglieds verhalten sollte. Eine solche Proportionalität ist jedoch mit Rücksicht auf die insbesondere bei niedriger Motorbelastung sehr geringen Druckunterschiede unmöglich. Aus diesem Grunde ist es bei geringer Belastung schwierig, eine ausreichende Abgasrückführung zu gewährleisten.For an optimal supply of a diesel engine, as already explained at the beginning, the Select exhaust gas recirculation so that the recirculated exhaust gas fraction compared to Fresh air volume decreases, taking into account a simple control the proportion of exhaust gas is almost directly proportional to the change in the actuator should. Such a proportionality, however, is due to the particular in low engine load very small pressure differences impossible. For this Basically, it is difficult to ensure adequate exhaust gas recirculation at low loads guarantee.

Bei der in der DE 30 23 652 C2 gewählten Maßnahme werden zwei Ventile so miteinander gekoppelt, daß bei Zunahme des Frischluftdurchsatzes die Abgasmenge abnimmt und umgekehrt. Die Wahl unterschiedlicher Ventile erlaubt eine gegenseitige mechanische Kopplung, die eine außerordentlich kompakte Einheit ermöglicht.In the measure chosen in DE 30 23 652 C2, two valves are connected to one another in this way coupled that the amount of exhaust gas decreases as the fresh air throughput increases and vice versa. The choice of different valves allows a mutual mechanical Coupling that enables an extremely compact unit.

Aus der DE 29 46 557 A1 hingegen ist ein anderer Lösungsweg bekannt, bei dem eine Drosselklappe im Luftansaugrohr angeordnet ist und ein Abgasrückführsteuerventil eine Abgasrückführeinleitung in das Luftansaugrohr steuert, wobei Drosselklappe und Steuerventils von jeweils einer pneumatischen Stelleinrichtung betätigt werden sollen. Hierbei liegen Stelleinrichtungen und Steuerventil direkt im Ansaugrohr, d. h. sind extrem der Verschmutzung durch Brennluft- und Brennstoffschmutzpartikel sowie durch Blow-by Gase und Schmieröldämpfe, die durch die Kurbelgehäuseentlüftung in das Ansaugrohr eintreten, ausgesetzt.Another solution is known from DE 29 46 557 A1, in which one Throttle valve is arranged in the air intake pipe and an exhaust gas recirculation control valve Exhaust gas recirculation in the air intake pipe controls, throttle valve and control valve to be actuated by a pneumatic actuator. Here are actuators and control valve directly in the intake pipe, d. H. are extremely the Pollution from combustion air and fuel dirt particles as well as blow-by Gases and lubricating oil vapors that enter the intake manifold through the crankcase ventilation enter, exposed.

Aus der DE 43 38 192 A1 ist ein Steuerventil für Abgasrückführung bekannt, bei dem die Ventilstange zwei Ventilteller aufweist, die mit zwei Ventilsitzen zusammenwirken, gleichzeitig verstellt werden und die Ventilsitze öffnen und schließen und so die Verbindung zwischen Abgaseinlaß und -auslaß steuern, wobei der Abgasauslaß direkt mit einem Luftansaugrohr der Brennkraftmaschine verbunden ist.
Auch hier kann eine extreme Verschmutzung auftreten, da die Ventilstange direkt in das Luftansaugrohr hineinragt.From DE 43 38 192 A1 a control valve for exhaust gas recirculation is known, in which the valve rod has two valve disks that interact with two valve seats, are adjusted simultaneously and open and close the valve seats and thus control the connection between the exhaust gas inlet and outlet, the Exhaust outlet is connected directly to an air intake pipe of the internal combustion engine.
Extreme contamination can also occur here, since the valve rod protrudes directly into the air intake pipe.

Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, einen gattungsgemäßen Brennluftansaugrohrabschnitt für Dieselbrennkraftmaschinen derart zu gestalten, daß ein kostengünstiger konstruktiver Aufbau in Gußausführung und zusätzlich eine verbesserte, gegen Schmutz geschützte Ausführung erreicht werden.Proceeding from this, the object of the invention is to create a generic one Combustion air intake pipe section for diesel engines so that a cost-effective structural design in cast design and additionally an improved, protection against dirt can be achieved.

Diese Aufgabe ist durch die im Kennzeichen des Patentanspruchs 1 genannten Merkmale gelöst. Vorteilhafte Weiterbildungen sind mit den Unteransprüchen angegeben.This object is achieved by the features mentioned in the characterizing part of patent claim 1 solved. Advantageous further developments are specified in the subclaims.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend beschrieben.An embodiment of the invention is shown in the drawing and is below described.

Die Zeichnung zeigt:

  • Fig. 1 eine schematische, geschnittene Darstellung eines Brennluftansaugrohrabschnitts und
  • Fig. 2 eine Explosionsdarstellung.
    • The drawing shows:
  • Fig. 1 is a schematic, sectional view of a combustion air intake pipe section and
  • Fig. 2 is an exploded view.

    • Fig. 1 zeigt einen Schnitt eines Brennluftansaugrohrabschnitts 1 für Dieselbrennkraftmaschinen, mit einer den Luftdurchsatz drosselnden Luftklappe 2 und einer stromab davon bestehenden Abgasrückführeinleitung 3, die von einem Abgasrückführsteuerventil 4 kontrolliert wird, wobei Luftklappe 2 und Steuerventil 4 nach Maßgabe von Steuersignalen durch elektrische oder pneumatische Stelleinrichtungen 5, 6 betätigt werden.1 shows a section of a combustion air intake pipe section 1 for diesel internal combustion engines, with an air damper throttling the air flow rate 2 and one downstream thereof Existing exhaust gas recirculation introduction 3, which by an exhaust gas recirculation control valve 4th is checked, air damper 2 and control valve 4 in accordance with control signals can be actuated by electrical or pneumatic actuators 5, 6.

    Erfindungsgemäß ist nun vorgesehen, daß der Ansaugrohrabschnitt 1 als Gußgehäuse 7 ausgebildet ist und Aufnahmeausnehmungen 8, 9 aufweist, in die ein Abgasrückführeinleitungseinsatz 10 und ein Abgasrückführsteuerventileinsatz 11 eingesetzt und mittels Paßsitzabschnitten 12, 13 in den Aufnahmeausnehmungen 8, 9 gehalten sind.According to the invention, it is now provided that the intake pipe section 1 as a cast housing 7 is formed and has receiving recesses 8, 9 into which an exhaust gas recirculation introduction insert 10 and an exhaust gas recirculation control valve insert 11 and used Fit sections 12, 13 are held in the receiving recesses 8, 9.

    Es ist ersichtlich, daß die Aufnahmeausnehmungen 8, 9 über einen Gehäusedurchbruch 14 miteinander verbunden sind, wobei der Gehäusedurchbruch 14 durch einen Einleitungsabschnittskragen 15 des Abgasrückführeinleitungseinsatzes 10 gegenüber dem Brennluftansaugrohrabschnitt 1 verschlossen ist und der Einleitungsabschnitt einen Abgaseinlauftrichter 16 bildet, der in einen in Brennluftströmungsrichtung in den Ansaugrohrabschnitt 1 ausmündenden Abgaseinleitungsabschnitt 17 übergeht.It can be seen that the receiving recesses 8, 9 have a housing opening 14 are connected to each other, the housing opening 14 by a lead-in section collar 15 of the exhaust gas recirculation insert 10 compared to the Combustion air intake pipe section 1 is closed and the introduction section an exhaust gas inlet funnel 16 that forms in the combustion air flow direction into the intake pipe section 1 merging exhaust gas introduction section 17 passes.

    Desweiteren ist vorgesehen, daß die Aufnahmeausnehmung 9 für das Steuerventil 4 einen Gehäusedurchbruch 18 aufweist, der in einen Anschlußabschnitt 19 für eine nicht dargestellte Abgaszuführleitung übergeht und daß der Gehäusedurchbruch 18 von einem Einleitungsabschnittskragen 20 des Steuerventileinsatzes 11 verschlossen ist. Der Einleitungsabschnitt bildet einen Abgaseinlauftrichter 21, der in eine Ventilkammer 22 übergeht.Furthermore, it is provided that the receiving recess 9 for the control valve 4 a Has housing opening 18, which in a connection section 19 for one Exhaust gas supply line shown merges and that the housing opening 18 by one Introductory section collar 20 of the control valve insert 11 is closed. The The introduction section forms an exhaust gas inlet funnel 21, which enters a valve chamber 22 transforms.

    Die Ventilkammer 22 ist über eine Doppelventilanordnung 23 mit einer durch die Einleitungsabschnittskragen 15 und 20 und den Paßsitzabschnitt 13 des Steuerventileinsatzes 11 abgeschlossenen Ausnahmeausnehmung 9 gebildeten Gehäusekammer 24 verbunden. Der Steuerventileinsatz 11 weist eine gegenüber der Gehäusekammer 24 abgeschlossene Betätigungskammer 25 auf, die von der Stelleinrichtung 6 gegenüber der Atmosphäre abgedichtet ist, wobei Stellstangen 26 und 27 der Doppelventilanordnung 23 und der Stelleinrichtung 6 jeweils in die Betätigungskammer 25 hineinragen und dort miteinander kontaktieren.The valve chamber 22 is via a double valve arrangement 23 with a collar through the introduction section 15 and 20 and the snug portion 13 of the control valve insert 11 closed recess 9 connected housing chamber 24 connected. The control valve insert 11 has a seal that is sealed off from the housing chamber 24 Actuating chamber 25, which is opposite the actuator 6 Atmosphere is sealed, with actuating rods 26 and 27 of the double valve arrangement 23 and the actuating device 6 each protrude into the actuation chamber 25 and there contact each other.

    In der Fig. 1 ist die Aufnahmeausnehmung 9 mit dem Steuerventileinsatz 11 parallel zum Brennluftansaugrohrabschnitt 1 angeordnet, wohingegen die Explosionsdarstellung nach Fig. 2 eine Anordnung unter einem rechten Winkel zum Ansaugrohrabschnitt 1 zeigt. Im übrigen entspricht die Ausführung der der Fig. 1 und ist mit gleicher Bezifferung der Bauteile versehen.In Fig. 1, the receiving recess 9 with the control valve insert 11 is parallel to Combustion air intake pipe section 1 arranged, whereas the exploded view after Fig. 2 shows an arrangement at a right angle to the intake pipe section 1. in the the rest corresponds to that of FIG. 1 and has the same numbering of the components Mistake.

    Mit der erfindungsgemäßen Ausführung liegt ein als kostengünstige Gußkonstruktion mit vorteilhaft herstellbaren Einsätzen zusammensetzbarer Brennluftansaugrohrabschnitt 1 vor, bei dem Verschmutzung der Ventileinrichtung 23 weitestgehend ausgeschlossen ist, da diese durch die nachgeschaltete Gehäusekammer 24 und den in Strömungsrichtung austretenden Abgasstrom nicht mit der frischen Brennluft in Berührung kommen kann und somit auch nicht mit den Schutzpartikeln bzw. Öl- bzw. Verbrennungsrückständen. With the embodiment according to the invention is an inexpensive cast construction Combusable air intake pipe section 1 that can be advantageously assembled before contamination of the valve device 23 is largely excluded, since this through the downstream housing chamber 24 and in the flow direction escaping exhaust gas flow cannot come into contact with the fresh combustion air and therefore not with the protective particles or oil or combustion residues.

    Darüber hinaus ermöglicht die erfindungsgemäße Ausführung eine verbesserte Gleichverteilung des rückgeführten Abgases auf die einzelnen Zylinder Brennkraftmaschine.In addition, the design according to the invention enables improved uniform distribution of the recirculated exhaust gas to the individual cylinders of the internal combustion engine.

    Claims (7)

    Brennluftansaugrohrabschnitt für Dieselbrennkraftmaschinen, mit einer den Luftdurchsatz drosselnden Luftklappe und einer stromab davon bestehenden Abgasrückführeinleitung, die von einem Abgasrückführsteuerventil kontrolliert wird, wobei Luftklappe und Steuerventil nach Maßgabe von Steuersignalen durch elektrische oder pneumatische Stelleinrichtungen betätigt werden, dadurch gekennzeichnet, daß der Ansaugrohrabschnitt (1) als Gußgehäuse (7) ausgebildet ist und Aufnahmeausnehmungen (8, 9) aufweist, in die ein Abgasrückführeinleitungseinsatz (10) und ein Abgasrückführsteuerventileinsatz (11) eingesetzt und mittels Paßsitzabschnitten (12, 13) in den Aufnahmeausnehmungen (8, 9) gehalten sind.Combustion air intake pipe section for diesel engines, with an air flap throttling the air flow rate and an exhaust gas recirculation introduction downstream thereof, which is controlled by an exhaust gas recirculation control valve, the air flap and control valve being actuated according to control signals by electrical or pneumatic actuating devices, characterized in that the intake pipe section (1) as Cast housing (7) is formed and has receiving recesses (8, 9) into which an exhaust gas recirculation insert (10) and an exhaust gas recirculation control valve insert (11) are inserted and held in the receiving recesses (8, 9) by means of snug fit sections (12, 13). Ansaugrohrabschnitt nach Anspruch 1, dadurch gekennzeichnet, daß die Aufnahmeausnehmungen (8, 9) über einen Gehäusedurchbruch (14) miteinander verbunden sind.Intake pipe section according to claim 1, characterized in that the receiving recesses (8, 9) are connected to one another via a housing opening (14). Ansaugrohrabschnitt nach Anspruch 2, dadurch gekennzeichnet, daß der Gehäusedurchbruch (14) durch einen Einleitungsabschnittskragen (15) des Abgasrückführeinleitungseinsatzes (10) gegenüber dem Brennluftansaugrohrabschnitt (1) verschlossen ist und der Einleitungsabschnitt einen Abgaseinlauftrichter (16) bildet, der in einen in Brennluftströmungsrichtung in den Ansaugrohrabschnitt (1) ausmündenden Abgaseinleitungsabschnitt (17) übergeht.Intake pipe section according to claim 2, characterized in that the housing opening (14) is closed off from the combustion air intake pipe section (1) by an introduction section collar (15) of the exhaust gas recirculation introduction insert (10) and the introduction section forms an exhaust gas inlet funnel (16) which in the combustion air flow direction in the Intake pipe section (1) merging exhaust gas introduction section (17) passes. Ansaugrohrabschntt nach Anspruch 3, dadurch gekennzeichnet, daß die Aufnahmeausnehmung (9) für das Steuerventil (4) einen Gehäusedurchbruch (18) aufweist, der in einen Anschlußabschnitt (19) für eine Abgaszuführleitung übergeht. Intake pipe section according to claim 3, characterized in that the receiving recess (9) for the control valve (4) has a housing opening (18) which merges into a connecting section (19) for an exhaust gas supply line. Ansaugrohrabschntt nach Anspruch 4, dadurch gekennzeichnet, daß der Gehäusedurchbruch (18) von einem Einleitungsabschnittskragen (20) des Steuerventileinsatzes (11) verschlossen ist, wobei der Einleitungsabschnitt einen Abgaseinlauftrichter (21) bildet, der in eine Ventilkammer (22) übergeht.Intake pipe section according to claim 4, characterized in that the housing opening (18) is closed by an inlet section collar (20) of the control valve insert (11), the inlet section forming an exhaust gas inlet funnel (21) which merges into a valve chamber (22). Ansaugrohrabschnitt nach Anspruch 5, dadurch gekennzeichnet, daß die Ventilkammer (22) über eine Doppelventilanordnung (23) mit einer durch die Einleitungsabschnittskragen (15 und 20) und den Paßsitzabschnitt (13) des Steuerventileinsatzes (11) abgeschlossenen Ausnahmeausnehmung (9) gebildeten Gehäusekammer (24) verbunden ist.Intake pipe section according to claim 5, characterized in that the valve chamber (22) is formed by a double valve arrangement (23) with a housing chamber (24) formed by the inlet section collar (15 and 20) and the fitting section (13) of the control valve insert (11) ) connected is. Ansaugrohrabschnitt nach Anspruch 6, dadurch gekennzeichnet, daß der Steuerventileinsatz (11) eine gegenüber der Gehäusekammer (24) abgeschlossene Betätigungskammer (25) aufweist, die von der Stelleinrichtung (6) gegenüber der Atmosphäre abgedichtet ist, wobei Stellstangen (26, 27) der Doppelventilanordnung (23) und der Stelleinrichtung (6) jeweils in die Betätigungskammer (25) hineinragen und dort miteinander kontaktieren.Intake pipe section according to Claim 6, characterized in that the control valve insert (11) has an actuating chamber (25) which is closed off from the housing chamber (24) and is sealed from the atmosphere by the actuating device (6), with adjusting rods (26, 27) of the double valve arrangement (23) and the actuating device (6) each protrude into the actuating chamber (25) and contact them there.
    EP99121637A 1999-01-15 1999-10-30 Intake air duct for diesel engines Expired - Lifetime EP1020635B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19901318 1999-01-15
    DE19901318A DE19901318A1 (en) 1999-01-15 1999-01-15 Combustion air intake pipe section for diesel engines

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    EP1020635A2 true EP1020635A2 (en) 2000-07-19
    EP1020635A3 EP1020635A3 (en) 2000-10-18
    EP1020635B1 EP1020635B1 (en) 2006-02-01

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    DE (2) DE19901318A1 (en)

    Cited By (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR2813345A1 (en) * 2000-08-29 2002-03-01 Bosch Gmbh Robert System, for re-injection of exhaust gas into internal combustion engine, has control valve protruding into inlet flow channel, with obstruction placed downstream to create dynamic pressure and to induce radial flow
    FR2837243A1 (en) * 2002-03-13 2003-09-19 Daimler Chrysler Ag Exhaust gas recirculation device comprises suction channel containing exhaust gas recirculation channel which has diversion device in its outlet causing exhaust gases to be delivered in fresh air flow direction
    EP1529952A2 (en) * 2003-11-07 2005-05-11 Hitachi, Ltd. Electronic EGR gas control system
    EP2243947A1 (en) * 2009-04-18 2010-10-27 Mahle International GmbH Intake module with integrated exhaust gas recirculation

    Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US4329965A (en) * 1979-10-09 1982-05-18 Toyota Jidosha Kogyo Kabushiki Kaisha Diesel engine exhaust gas recirculation and intake air flow control system
    DE4338192A1 (en) * 1993-11-09 1995-05-11 Pierburg Gmbh Electromagnetic control valve for recycling exhaust gases
    EP0753656A1 (en) * 1995-07-13 1997-01-15 Aisan Kogyo Kabushiki Kaisha Exhaust gas recirculation
    EP0780565A2 (en) * 1995-12-21 1997-06-25 Denso Corporation EGR system using a control valve arranged perpendicularly to the axis of an air intake passage

    Patent Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US4329965A (en) * 1979-10-09 1982-05-18 Toyota Jidosha Kogyo Kabushiki Kaisha Diesel engine exhaust gas recirculation and intake air flow control system
    DE4338192A1 (en) * 1993-11-09 1995-05-11 Pierburg Gmbh Electromagnetic control valve for recycling exhaust gases
    EP0753656A1 (en) * 1995-07-13 1997-01-15 Aisan Kogyo Kabushiki Kaisha Exhaust gas recirculation
    EP0780565A2 (en) * 1995-12-21 1997-06-25 Denso Corporation EGR system using a control valve arranged perpendicularly to the axis of an air intake passage

    Cited By (7)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR2813345A1 (en) * 2000-08-29 2002-03-01 Bosch Gmbh Robert System, for re-injection of exhaust gas into internal combustion engine, has control valve protruding into inlet flow channel, with obstruction placed downstream to create dynamic pressure and to induce radial flow
    FR2837243A1 (en) * 2002-03-13 2003-09-19 Daimler Chrysler Ag Exhaust gas recirculation device comprises suction channel containing exhaust gas recirculation channel which has diversion device in its outlet causing exhaust gases to be delivered in fresh air flow direction
    EP1529952A2 (en) * 2003-11-07 2005-05-11 Hitachi, Ltd. Electronic EGR gas control system
    EP1529952A3 (en) * 2003-11-07 2005-07-13 Hitachi, Ltd. Electronic EGR gas control system
    US7121268B2 (en) 2003-11-07 2006-10-17 Hitachi, Ltd. Electronic EGR gas control system
    EP2243947A1 (en) * 2009-04-18 2010-10-27 Mahle International GmbH Intake module with integrated exhaust gas recirculation
    US8925530B2 (en) 2009-04-18 2015-01-06 Mahle International Gmbh Intake module with integrated exhaust gas recirculation

    Also Published As

    Publication number Publication date
    DE19901318A1 (en) 2000-07-20
    DE59913094D1 (en) 2006-04-13
    EP1020635A3 (en) 2000-10-18
    EP1020635B1 (en) 2006-02-01

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