EP1058782A1 - Intake device for an internal combustion engine - Google Patents

Intake device for an internal combustion engine

Info

Publication number
EP1058782A1
EP1058782A1 EP99908924A EP99908924A EP1058782A1 EP 1058782 A1 EP1058782 A1 EP 1058782A1 EP 99908924 A EP99908924 A EP 99908924A EP 99908924 A EP99908924 A EP 99908924A EP 1058782 A1 EP1058782 A1 EP 1058782A1
Authority
EP
European Patent Office
Prior art keywords
guide tube
air inlet
inlet line
valve
bore
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
EP99908924A
Other languages
German (de)
French (fr)
Other versions
EP1058782B1 (en
Inventor
Martin Von Werder
Reinhard Fischer
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.)
Siemens AG
Original Assignee
Mannesmann VDO AG
Siemens 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 Mannesmann VDO AG, Siemens AG filed Critical Mannesmann VDO AG
Publication of EP1058782A1 publication Critical patent/EP1058782A1/en
Application granted granted Critical
Publication of EP1058782B1 publication Critical patent/EP1058782B1/en
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
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1035—Details of the valve housing
    • 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
    • F02M26/12—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems characterised by means for attaching parts of an EGR system to each other or to engine parts
    • 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
    • F02M26/18—Thermal insulation or heat protection
    • 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
    • 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
    • F02M26/13—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

Definitions

  • the invention relates to an intake device for an internal combustion engine according to the features of the preamble of claim 1.
  • the invention has for its object to provide an intake device for an internal combustion engine, which is characterized by a simple construction and by a very good efficiency.
  • the presence of an opening through which a guide tube protrudes into the air inlet line has the advantage that a simple and therefore inexpensive piece of tube can be used as the guide tube, which is inserted through the opening into the air inlet line and secured captively.
  • the introduction of an opening as a hole represents a simple manufacturing process, this hole already being taken into account when manufacturing the air inlet line and not subsequently must be brought.
  • Characterized in that the guide tube protrudes into the air inlet lines there is the advantage that high wall temperatures of the air inlet line are avoided and the further fluid which is supplied is fed into the main flow which passes through the air inlet line.
  • the further fluid that can be supplied is, for example, recirculated exhaust gas, but also fresh air, a fuel-air mixture or swirled fuel.
  • the air inlet line has a throttle valve connector with a throttle valve, the bore with the guide tube being arranged in the region of the throttle valve connector.
  • this throttle valve assembly which has a drivable throttle valve in a manner known per se in order to change the output of the internal combustion engine, forms a structural unit in which the bore for receiving the guide tube is provided.
  • the throttle valve neck can be preassembled as a unit, to which only the air supply, for example from an air filter, and the connection to the intake area of the internal combustion engine then have to be made.
  • the air inlet line or the throttle valve connector has a flange for attaching a valve for supplying the further fluid, the bore with the guide tube being arranged in the region of the flange.
  • a valve for example an exhaust gas recirculation valve
  • the valve can also be arranged at another location, so that the flange then serves to attach a feed line for the further fluid to it.
  • the air inlet line or the flange can be firmly connected to the guide tube. This ensures that the guide tube is secured captively, since falling into the air inlet line can lead to damage or even destruction of the internal combustion engine.
  • the fixed connection can advantageously be achieved by means of a pressing process, since this can be carried out easily, especially when taking into account the high temperatures which are present in exhaust gas recirculation.
  • Other fastening processes such as welding, gluing or the like, are also conceivable, wherein in addition to non-positive connections, positive connections, which in particular meet the temperature requirements, must also be taken into account.
  • an at least partially circumferential groove is provided in the air inlet line or in the flange in the region of the bore, into which an end region of the guide tube can be pressed.
  • this also ensures a sealing effect and a good, streamlined supply of the additional fluid.
  • Another advantage is that there is no need for complex machining of the guide tube, so that the use of a commercially available tube piece is made possible. Likewise, expensive machining (such as overtightening) of the sealing surface of the flange is advantageously dispensed with.
  • the guide tube can be inserted into the bore and has means, in particular a circumferential collar, by means of which the guide tube can be held in a desired position.
  • This has the advantage that no further processing steps are required in the area of the bore to mount the guide tube. It is simply inserted into the hole until the collar comes to rest on the sealing surface of the flange (or the surface of the air guide tube), so that, in addition to the simple assembly, there is again a high level of security against loss.
  • the use of an assembly tool is not necessary, since after the valve or another supply line has been attached to the flange, the guide tube is fixed in its desired position.
  • the guide tube has a flattened portion in its one end region with which it projects into the air inlet line.
  • This has the advantage that the guide tube can be inserted into the bore more easily and quickly, since there is a positive guide because of the flattening.
  • Such flattening is particularly advantageous when the diameter of the bore and the guide tube are largely the same.
  • such a flattening can be omitted or used anyway if the diameter of the air guide tube is significantly smaller than the diameter of the bore, in which case it must be ensured that the means by means of which the guide tube is stable in its desired position are designed accordingly are chosen (in particular larger in diameter than the diameter of the bore) in order to ensure security.
  • the guide tube has a triangular shape in its other end region, which points in the direction of the valve.
  • This triangular shape in one end area of the guide tube provides an additional Before bias is generated in the holding area, in particular in the area of the circumferential groove, in order to ensure the tight fit of the guide tube.
  • the guide tube is arranged on the valve or is part of the valve.
  • the installation simplicity increases, since in this embodiment the guide tube and the valve form a structural unit and thus only the valve, in particular its housing, has to be fastened to the air inlet line.
  • the further fluid is the exhaust gas of an internal combustion engine, the valve being designed as an exhaust gas recirculation valve, in particular as a controllable valve.
  • Exhaust gas recirculation valves are known per se and serve to increase the efficiency of the internal combustion engine, so that there is no need to refer to their advantages here.
  • the use of the guide tube is particularly advantageous when the exhaust gas from the internal combustion engine is returned as a further fluid, since there are high temperatures here, the inadmissibly high wall temperatures and material fatigue due to high temperature fluctuations in the area of the inlet and on the flange (throttle valve body made of metal , flanged plastic pipes), which can be effectively avoided by using the guide tube that directs the exhaust gases into the central area of the air inlet pipe.
  • FIG. 1 a throttle valve connector
  • Figures 2 to 10 configurations and locations of various guide tubes.
  • FIG. 1 shows a piece of an air inlet line 1 through which combustion air for an internal combustion engine is supplied to a throttle valve connector 3 in the flow direction 2, for example coming from an air filter (not shown).
  • This throttle valve connector 3 forms a structural unit and is firmly connected to the air inlet line, it being also conceivable that the air inlet line 1 is attached to the throttle valve connector 3. is cash.
  • the throttle valve assembly 3 has a throttle valve 4, which is arranged on a throttle valve shaft 5, for adjusting the power of the internal combustion engine, the throttle valve shaft 5 being movable between a closed position and an open position by a drive arranged in a housing 6.
  • the operation of such a throttle valve assembly is known per se, so that it does not need to be discussed further.
  • the throttle valve connector 3 On the output side in the flow direction 2, the throttle valve connector 3 is connected to an intake pipe 7, which likewise leads to the internal combustion engine, in particular the intake tract of the individual cylinders, in a manner known per se.
  • the throttle valve connector 3 (or the air inlet line 1 or the intake pipe 7) has a flange 8, a bore 9 being provided in the region of this flange 8.
  • the flange 8 or the bore 9 can be provided directly when producing the throttle valve connector 3, but alternatively can also be produced by subsequent processing.
  • the flange 8 also has mounting holes 10, which will be discussed later.
  • FIG. 2 it is shown that a guide tube 11 is supported on a shoulder 12.
  • Reference numeral 13 denotes an at least partially shown valve (in particular exhaust gas recirculation valve) which is fastened to the flange 8 with the interposition of a seal, this being done by means of screws which are screwed into the fastening bores 10.
  • This attachment has the advantage that no further processing is necessary within the bore. It is conceivable, particularly if the bore 9 is used to manufacture the throttle valve. Penstutzens 3 is poured, this conical towards the inside of the throttle valve connector 3 to ensure the security against loss.
  • FIG. 3 shows that the guide tube 11 has a collar 14 in its end region, which points in the direction of the valve 13. With this collar 14, the guide tube 11 can be held captively either on the sealing surface of the flange 8 or else on a correspondingly shaped shoulder within the valve 13. This has the advantage that in addition to the introduction of the bore 9 into the air inlet line 1 or the throttle valve connector 3, no further processing of the same is required and simple assembly is provided.
  • Another advantage is that when the guide tube 11 is already inserted in the valve 13, a simple and quick assembly of these two elements is provided.
  • FIG. 4 shows that the guide tube 11 is inserted into the bore 9 again in the throttle valve connector 3.
  • the guide tube 11 is a commercially available piece of tube with a length in which the tube on the one hand does not protrude beyond the sealing surface of the flange 8 and on the other hand a piece into the air inlet line 1 or Throttle body 3 protrudes for the targeted supply of the fluid.
  • the inner diameter of the guide tube 11 is to be selected so that the required volume of additional fluid can be supplied.
  • the guide tube 11 is shown after completion of the pressing process, with the reference numeral 15 denotes a circumferential groove in the throttle valve body 3, in which the widened tube end 16 of the guide tube 11 engages after the pressing process.
  • the pressing process can be carried out in such a way that the widened tube end 16 connects the guide tube 11 sealingly to the throttle valve connector 3, although this is not absolutely necessary since the valve 13 is attached to the flange 8, in particular with the interposition of a seal, for the sealing effect the supplied fluid is ensured.
  • FIG. 6 The actual pressing process is shown in FIG. 6, for which purpose a counter-holder 17 is inserted into the interior of the throttle valve connector 3 (or the air inlet line 1) into an assembly position for the guide tube 11. The guide tube 11 is then inserted from the outside into the bore 9 until it comes to rest on the counter-holder 17 with its one end. The position of the counter-holder 17 and the length of the guide tube 11 are coordinated to the extent that the end of the guide tube 11 facing away from the counter-holder 17 ends at the level of the circumferential groove 15. Then a pressing tool 18 (for example a punch which has a conical flattening at the end, as shown in FIG.
  • a pressing tool 18 for example a punch which has a conical flattening at the end, as shown in FIG.
  • FIGS. 7 and 8 again show a guide tube 11 which has a flattened portion 20 in its one end region with which it projects into the air inlet line 1. This flattened portion 20 can be turned off, for example, whereby it can also be used in the guide tubes shown in the previous figures in order to simplify the assembly.
  • the guide tube 11 In its other end region, which points in the direction of the valve 13, the guide tube 11 has a triangular shape 21 in order to generate an additional prestress in the region of the circumferential groove 15 and to ensure that the guide tube 11 is firmly seated after the pressing operation has been carried out.
  • FIG. 9 shows a guide tube 11 which is fastened in the throttle valve connector 3 in a circumferential groove 22, which is designed in a step-like or largely round manner.
  • FIG. 10 shows a throttle valve connector 3 which has a step-shaped bore 9, the inward diameter of the bore largely corresponding to the diameter of the guide tube 11 and receiving it.
  • the outwardly directed part has a diameter which is larger than the outer diameter of the guide tube 11, which creates a shoulder by means of which the guide tube 11, which was widened at this end before insertion or is expanded after insertion, is shaped and / or is held non-positively and captively.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Lift Valve (AREA)

Abstract

The invention relates to an intake device for an internal combustion engine to which at least combustion air and an additional fluid can be fed via an air intake line (1). The invention is characterized in that the air intake line (1) has an opening, especially a bore hole (9), through which a guide tube (11) projects into said air intake line (1).

Description

Ansaugvorrichtung für eine Brennkraftmaschine Intake device for an internal combustion engine
Beschreibungdescription
Die Erfindung betrifft eine Ansaugvorrichtung für eine Brennkraftmaschine gemäß den Merkmalen des Oberbegriffes des Patentanspruches 1.The invention relates to an intake device for an internal combustion engine according to the features of the preamble of claim 1.
Aus der EP 0 507 996 A2 ist eine Vorrichtung zum dosierten Einspeisen von verbrannten Gasen in den Brennraum einer Verbrennungskraftmaschine bekannt. Von einem Abgasrohr der Brennkraftmaschine zweigt eine Leitung ab, wobei das rückgeführte Abgas über ein Ventil gesteuert einem Ansaugrohr zugeführt wird, um anschließend in der Brennkraftmaschine mitverbrannt zu werden. Angaben über die Anbindung der Zufuhrleitung an das Ansaugrohr sind diesem Stand der Technik nicht zu entnehmen.From EP 0 507 996 A2 a device for the metered feeding of burned gases into the combustion chamber of an internal combustion engine is known. A line branches off from an exhaust pipe of the internal combustion engine, the recirculated exhaust gas being fed to an intake pipe in a controlled manner via a valve, in order to be subsequently burned in the internal combustion engine. Information about the connection of the supply line to the intake pipe cannot be found in this prior art.
Der Erfindung liegt die Aufgabe zugrunde, eine Ansaugvorrichtung für eine Brennkraftmaschine bereitzustellen, die sich durch eine einfache Konstruktion sowie durch einen sehr guten Wirkungsgrad auszeichnet.The invention has for its object to provide an intake device for an internal combustion engine, which is characterized by a simple construction and by a very good efficiency.
Diese Aufgabe ist durch die Merkmale des Patentanspruches 1 gelöst.This object is solved by the features of claim 1.
Das Vorhandensein einer Öffnung, durch die ein Leitrohr in die Lufteinlaßleitung hineinragt, hat den Vorteil, daß als Leitrohr ein einfaches und damit kostengünstiges Stück Rohr verwendet werden kann, welches durch die Öffnung in die Lufteinlaßleitung hineingesteckt und verliersicher befestigt wird. Das Einbringen einer Öffnung als Bohrung stellt einen einfachen Herstellungsvorgang dar, wobei beim Herstellen der Lufteinlaßleitung diese Bohrung schon berücksichtigt und nicht nachträglich einge- bracht werden muß. Dadurch, daß das Leitrohr in die Lufteinlaßleitungen hineinragt, ist der Vorteil gegeben, daß hohe Wandtemperaturen der Lufteinlaßleitung vermieden werden und das weitere Fluid, das zugeführt wird, in die Hauptströmung, die die Lufteinlaßleitung durchsetzt, zugeführt wird. Ebenso wird vermieden, daß zu hohe Temperaturen im Bereich der Zuführung des weiteren Fluids, wenn dieser Bereich aus Metall gefertigt ist, zu einer unzulässigen Erwärmung oder sogar zur Zerstörung von angeflanschten Leitungen führen, insbesondere wenn diese aus Kunststoff gefertigt sind. Starke Temperaturdifferenzen, die zu Materialermüdungen führen, werden somit auch vermieden. Bei dem weiteren Fluid, das zuführbar ist, handelt es sich beispielsweise um rückgeführtes Abgas, aber auch um Frischluft, ein Kraftstoff-Luft-Gemisch oder auch verwirbelten Kraftstoff.The presence of an opening through which a guide tube protrudes into the air inlet line has the advantage that a simple and therefore inexpensive piece of tube can be used as the guide tube, which is inserted through the opening into the air inlet line and secured captively. The introduction of an opening as a hole represents a simple manufacturing process, this hole already being taken into account when manufacturing the air inlet line and not subsequently must be brought. Characterized in that the guide tube protrudes into the air inlet lines, there is the advantage that high wall temperatures of the air inlet line are avoided and the further fluid which is supplied is fed into the main flow which passes through the air inlet line. It is also avoided that excessively high temperatures in the area of the supply of further fluid, if this area is made of metal, lead to inadmissible heating or even to the destruction of flanged lines, especially if they are made of plastic. Strong temperature differences that lead to material fatigue are also avoided. The further fluid that can be supplied is, for example, recirculated exhaust gas, but also fresh air, a fuel-air mixture or swirled fuel.
In Weiterbildung der Erfindung weist die Lufteinlaßleitung einen Drosselklappenstutzen mit einer Drosselklappe auf, wobei die Bohrung mit dem Leitrohr im Bereich des Drosselklappenstutzens angeordnet ist. Somit bildet dieser Drosselklappenstutzen, der in an sich bekannter Weise eine antreibbare Drosselklappe aufweist, um die Leistung der Brennkraftmaschine zu verändern, eine Baueinheit, in der die Bohrung zur Aufnahme des Leitrohres vorgesehen ist. Dies hat den Vorteil, daß der Drosselkiap- penstutzen als Einheit vormontierbar ist, an den dann nur noch die Luftzuführung, beispielsweise von einem Luftfilter, und die Verbindung zum Ansaugbereich der Brennkraftmaschine hergestellt werden muß.In a further development of the invention, the air inlet line has a throttle valve connector with a throttle valve, the bore with the guide tube being arranged in the region of the throttle valve connector. Thus, this throttle valve assembly, which has a drivable throttle valve in a manner known per se in order to change the output of the internal combustion engine, forms a structural unit in which the bore for receiving the guide tube is provided. This has the advantage that the throttle valve neck can be preassembled as a unit, to which only the air supply, for example from an air filter, and the connection to the intake area of the internal combustion engine then have to be made.
In Weiterbildung der Erfindung weist die Lufteinlaßleitung beziehungsweise der Drosselklappenstutzen einen Flansch zur Anbringung eines Venti- les zum Zuführen des weiteren Fluids auf, wobei die Bohrung mit dem Leitrohr im Bereich des Flansches angeordnet ist. Dies hat den Vorteil, daß das Ventil (zum Beispiel ein Abgasrückführventil) direkt an der Lufteinlaßleitung beziehungsweise an dem Drosselklappenstutzen befestigt werden kann, wodurch eine kompakte Bauweise sichergestellt wird. Selbstverständlich kann das Ventil auch an einer anderen Stelle angeordnet sein, so daß dann der Flansch dazu dient, an ihm eine Zuführleitung für das weitere Fluid anzubringen.In a development of the invention, the air inlet line or the throttle valve connector has a flange for attaching a valve for supplying the further fluid, the bore with the guide tube being arranged in the region of the flange. This has the advantage that the valve (for example an exhaust gas recirculation valve) is directly on the Air inlet line or can be attached to the throttle valve assembly, thereby ensuring a compact design. Of course, the valve can also be arranged at another location, so that the flange then serves to attach a feed line for the further fluid to it.
In Weiterbildung der Erfindung ist die Lufteinlaßleitung oder der Flansch mit dem Leitrohr fest verbindbar. Dadurch wird sichergestellt, daß das Leitrohr verliersicher befestigt ist, da ein Hineinfallen in die Lufteinlaßleitung zu Schäden oder sogar zu Zerstörungen an der Brennkraftmaschine führen kann. In vorteilhafter Weise ist die feste Verbindung mittels eines Preßvorganges erzielbar, da dieser, gerade bei Berücksichtigung der hohen Temperaturen, die bei einer Abgasrückführung vorhanden sind, einfach ausführbar ist. Denkbar sind auch andere Befestigungsvorgänge wie zum Beispiel Verschweißen, Verkleben oder dergleichen, wobei neben kraftschlüssige Verbindungen auch formschlüssige Verbindungen, die insbesondere den Temperaturforderungen genügen, zu berücksichtigen sind.In a further development of the invention, the air inlet line or the flange can be firmly connected to the guide tube. This ensures that the guide tube is secured captively, since falling into the air inlet line can lead to damage or even destruction of the internal combustion engine. The fixed connection can advantageously be achieved by means of a pressing process, since this can be carried out easily, especially when taking into account the high temperatures which are present in exhaust gas recirculation. Other fastening processes, such as welding, gluing or the like, are also conceivable, wherein in addition to non-positive connections, positive connections, which in particular meet the temperature requirements, must also be taken into account.
In Weiterbildung der Erfindung ist in der Lufteinlaßleitung oder in dem Flansch im Bereich der Bohrung eine zumindest teilweise umlaufende Nut vorgesehen, in die ein Endbereich des Leitrohres einpreßbar ist. Damit wird neben der Verliersicherheit auch eine Dichtwirkung und eine gute, strömungsgünstige Zuführung des weiteren Fluids gewährleistet. Ein weiterer Vorteil besteht darin, daß eine aufwendige Bearbeitung des Leitrohres entfallen kann, so daß die Verwendung eines handelsüblichen Rohrstückes ermöglicht wird. Ebenso entfällt in vorteilhafter Weise eine aufwendige Bearbeitung (wie zum Beispiel Überdrehen) der Dichtfläche des Flansches. In Weiterbildung der Erfindung ist das Leitrohr in die Bohrung einsetzbar und weist Mittel, insbesondere einen umlaufenden Kragen, auf, mittels derer das Leitrohr in einer Sollposition haltbar ist. Dies hat den Vorteil, daß im Bereich der Bohrung keine weiteren Bearbeitungsschritte erforderlich sind, um das Leitrohr zu montieren. Es wird einfach in die Bohrung eingesteckt, bis der Kragen an der Dichtfläche des Flansches (oder der Oberfläche des Luftleitrohres) zum Anliegen kommt, so daß neben der einfachen Montage wieder die hohe Verliersicherheit gegeben ist. Die Verwendung eines Montagewerkzeuges ist nicht erforderlich, da nach Anbringung des Ventiles oder einer weiteren Zuführleitung an dem Flansch das Leitrohr in seiner Sollposition festgesetzt wird.In a further development of the invention, an at least partially circumferential groove is provided in the air inlet line or in the flange in the region of the bore, into which an end region of the guide tube can be pressed. In addition to the security against loss, this also ensures a sealing effect and a good, streamlined supply of the additional fluid. Another advantage is that there is no need for complex machining of the guide tube, so that the use of a commercially available tube piece is made possible. Likewise, expensive machining (such as overtightening) of the sealing surface of the flange is advantageously dispensed with. In a further development of the invention, the guide tube can be inserted into the bore and has means, in particular a circumferential collar, by means of which the guide tube can be held in a desired position. This has the advantage that no further processing steps are required in the area of the bore to mount the guide tube. It is simply inserted into the hole until the collar comes to rest on the sealing surface of the flange (or the surface of the air guide tube), so that, in addition to the simple assembly, there is again a high level of security against loss. The use of an assembly tool is not necessary, since after the valve or another supply line has been attached to the flange, the guide tube is fixed in its desired position.
In Weiterbildung der Erfindung weist das Leitrohr in seinem einen Endbereich, mit dem es in die Lufteinlaßleitung hineinragt, eine Abflachung auf. Dies hat den Vorteil, daß das Leitrohr einfacher und schneller in die Bohrung eingesetzt werden kann, da wegen der Abflachung eine Zwangsführung gegeben ist. Eine solche Abflachung ist besonders dann von Vorteil, wenn der Durchmesser der Bohrung und des Leitrohres weitestgehend gleich sind. Hingegen kann eine solche Abflachung entfallen oder trotzdem angewendet werden, wenn der Durchmesser des Luftleitrohres deutlich kleiner ist als der Durchmesser der Bohrung, wobei in einem solchen Fall sicherzustellen ist, daß dann die Mittel, mittels derer das Leitrohr in seiner Sollposition haltbar ist, entsprechend ausgebildet sind (insbesondere in ihrem Durchmesser größer gewählt sind als der Durchmesser der Bohrung), um die Veriiersicherheit zu gewährleisten.In a further development of the invention, the guide tube has a flattened portion in its one end region with which it projects into the air inlet line. This has the advantage that the guide tube can be inserted into the bore more easily and quickly, since there is a positive guide because of the flattening. Such flattening is particularly advantageous when the diameter of the bore and the guide tube are largely the same. On the other hand, such a flattening can be omitted or used anyway if the diameter of the air guide tube is significantly smaller than the diameter of the bore, in which case it must be ensured that the means by means of which the guide tube is stable in its desired position are designed accordingly are chosen (in particular larger in diameter than the diameter of the bore) in order to ensure security.
In Weiterbildung der Erfindung weist das Leitrohr in seinem anderen Endbereich, der in Richtung des Ventiles zeigt, eine Dreiecksform auf. Durch diese Dreikantform im einen Endbereich des Leitrohres wird eine zusätzli- ehe Vorspannung in dem Haltebereich, insbesondere im Bereich der umlaufenden Nut, erzeugt, um den Festsitz des Leitrohres zu gewährleisten.In a further development of the invention, the guide tube has a triangular shape in its other end region, which points in the direction of the valve. This triangular shape in one end area of the guide tube provides an additional Before bias is generated in the holding area, in particular in the area of the circumferential groove, in order to ensure the tight fit of the guide tube.
In Weiterbildung der Erfindung ist das Leitrohr an dem Ventil angeordnet oder Bestandteil des Ventiles. In dieser alternativen Ausgestaltungsform ist es möglich, wieder die Verliersicherheit mit der zielgenauen Zuführung des weiteren Fluides in die Lufteinlaßleitung zu verbinden, um unzulässig hohe Wandtemperaturen der Lufteinlaßleitung im Bereich der Einleitung zu vermeiden. Darüber hinaus erhöht sich die Montageeinfachheit, da in dieser Ausgestaltung das Leitrohr und das Ventil eine Baueinheit bilden und somit nur das Ventil, insbesondere dessen Gehäuse, an der Lufteinlaßleitung befestigt werden muß.In a further development of the invention, the guide tube is arranged on the valve or is part of the valve. In this alternative embodiment, it is possible to combine the security against loss with the precise supply of further fluid into the air inlet line in order to avoid impermissibly high wall temperatures of the air inlet line in the area of the inlet. In addition, the installation simplicity increases, since in this embodiment the guide tube and the valve form a structural unit and thus only the valve, in particular its housing, has to be fastened to the air inlet line.
In Weiterbildung der Erfindung ist das weitere Fluid das Abgas einer Brennkraftmaschine, wobei das Ventil als Abgasrückführventil, insbesondere als steuerbares Ventil, ausgebildet ist. Abgasrückführventile sind an sich bekannt und dienen der Erhöhung des Wirkungsgrades der Brennkraftmaschine, so daß auf deren Vorteile hier nicht weiter hingewiesen werden muß. Der Einsatz des Leitrohres ist dann, wenn als weiteres Fluid das Abgas der Brennkraftmaschine rückgeführt wird, von besonderem Vorteil, da hier hohe Temperaturen vorliegen, die zu unzulässig hohen Wandtemperaturen sowie zu Materialermüdungen aufgrund hoher Temperaturschwankungen im Bereich der Einleitung und am Flansch (Drosselklappenstutzen aus Metall, angeflanschte Leitungen aus Kunststoff) führen können, die durch den Einsatz des Leitrohres, das die Abgase in den Mittelbereich der Lufteinlaßleitung lenkt, wirksam vermieden werden.In a further development of the invention, the further fluid is the exhaust gas of an internal combustion engine, the valve being designed as an exhaust gas recirculation valve, in particular as a controllable valve. Exhaust gas recirculation valves are known per se and serve to increase the efficiency of the internal combustion engine, so that there is no need to refer to their advantages here. The use of the guide tube is particularly advantageous when the exhaust gas from the internal combustion engine is returned as a further fluid, since there are high temperatures here, the inadmissibly high wall temperatures and material fatigue due to high temperature fluctuations in the area of the inlet and on the flange (throttle valve body made of metal , flanged plastic pipes), which can be effectively avoided by using the guide tube that directs the exhaust gases into the central area of the air inlet pipe.
Aufgrund der Ausgestaltung der Lufteinlaßleitung bietet es sich an, die Lufteinlaßleitung mit einer Öffnung, insbesondere der schon genannten Bohrung, nachträglich zu versehen, und in diese das Leitrohr einzuführen. 6Due to the design of the air inlet line, it is advisable to provide the air inlet line with an opening, in particular the bore already mentioned, and to insert the guide tube into this. 6
Daneben sind denkbar auch solche Herstellungsverfahren, bei denen zumindest ein in die Lufteinlaßleitung ragendes Leitrohr ("Stummel") vorgesehen wird. Gleiches gilt für zum Beispiel Aluminium-Druckgußverfahren zur Herstellung von Drosselklappenstutzen. Ergänzend dazu kann auch schon bei der Herstellung der Lufteinlaßleitung, insbesondere wenn diese gegossen wird, der Flansch für das Ventil vorgesehen werden.In addition, such manufacturing processes are also conceivable in which at least one guide tube (“stub”) protruding into the air inlet line is provided. The same applies to, for example, aluminum die casting processes for the production of throttle valve bodies. In addition to this, the flange for the valve can also be provided during the manufacture of the air inlet line, especially when it is cast.
Neben der beschriebenen Zuführung von Abgas als weiterem Fluid ist selbstverständlich auch die Zuführung von anderen Gasen (beispielsweise Frischluft oder ein Kraftstoff-Luft-Gemisch) oder auch die gezielte Zuführung von Kraftstoff möglich. Einsatzgebiet sind vorzugsweise Ottooder Diesel-Brennkraftmaschinen.In addition to the described supply of exhaust gas as a further fluid, the supply of other gases (for example fresh air or a fuel-air mixture) or the targeted supply of fuel are of course also possible. Fields of application are preferably petrol or diesel engines.
Ein Ausführungsbeispiel einer Ansaugvorrichtung und mehrere Ausgestaltungen eines Leitrohres sind im folgenden beschrieben und anhand der Figuren erläutert.An embodiment of a suction device and several configurations of a guide tube are described below and explained with reference to the figures.
Es zeigen:Show it:
Figur 1 : einen Drosselklappenstutzen,FIG. 1: a throttle valve connector,
Figuren 2 bis 10: Ausgestaltungen und Einbauorte verschiedener Leitrohre.Figures 2 to 10: configurations and locations of various guide tubes.
Figur 1 zeigt ein Stück einer Lufteinlaßleitung 1 , durch die in Strömungsrichtung 2, von einem nicht gezeigten Luftfilter beispielsweise kommend, Verbrennungsluft für eine Brennkraftmaschine einem Drosselklappenstutzen 3 zugeführt wird. Dieser Drosselklappenstutzen 3 bildet eine Baueinheit und ist fest mit der Lufteinlaßleitung verbunden, wobei auch denkbar ist, daß die Lufteinlaßleitung 1 an den Drosselklappenstutzen 3 befestig- bar ist. Der Drosselklappenstutzen 3 weist zur Einstellung der Leistung der Brennkraftmaschine eine Drosselklappe 4 auf, die auf einer Drosselklappenwelle 5 angeordnet ist, wobei die Drosselklappenwelle 5 von einem in einem Gehäuse 6 angeordneten Antrieb zwischen einer Schließstellung und einer Öffnungsstellung bewegbar ist. Die Funktionsweise eines solchen Drosselklappenstutzens ist an sich bekannt, so daß auf diese nicht weiter eingegangen werden muß. Ausgangsseitig in Strömungsrichtung 2 schließt sich dem Drosselklappenstutzen 3 ein Ansaugrohr 7 an, das in ebenfalls an sich bekannter Weise zu der Brennkraftmaschine, insbesondere dem Ansaugtrakt der einzelnen Zylinder, führt. Der Drosselklappenstutzen 3 (oder die Lufteinlaßleitung 1 oder das Ansaugrohr 7) weist einen Flansch 8 auf, wobei im Bereich dieses Flansches 8 eine Bohrung 9 vorhanden ist. Der Flansch 8 beziehungsweise die Bohrung 9 können direkt bei Herstellung des Drosselklappenstutzens 3 vorgesehen werden, alternativ dazu aber auch durch nachträgliche Bearbeitung hergestellt werden. Der Flansch 8 weist weiterhin Befestigungsbohrungen 10 auf, auf die später noch eingegangen wird.FIG. 1 shows a piece of an air inlet line 1 through which combustion air for an internal combustion engine is supplied to a throttle valve connector 3 in the flow direction 2, for example coming from an air filter (not shown). This throttle valve connector 3 forms a structural unit and is firmly connected to the air inlet line, it being also conceivable that the air inlet line 1 is attached to the throttle valve connector 3. is cash. The throttle valve assembly 3 has a throttle valve 4, which is arranged on a throttle valve shaft 5, for adjusting the power of the internal combustion engine, the throttle valve shaft 5 being movable between a closed position and an open position by a drive arranged in a housing 6. The operation of such a throttle valve assembly is known per se, so that it does not need to be discussed further. On the output side in the flow direction 2, the throttle valve connector 3 is connected to an intake pipe 7, which likewise leads to the internal combustion engine, in particular the intake tract of the individual cylinders, in a manner known per se. The throttle valve connector 3 (or the air inlet line 1 or the intake pipe 7) has a flange 8, a bore 9 being provided in the region of this flange 8. The flange 8 or the bore 9 can be provided directly when producing the throttle valve connector 3, but alternatively can also be produced by subsequent processing. The flange 8 also has mounting holes 10, which will be discussed later.
Unter Bezugnahme auf die Figur 1 werden im folgenden verschiedene Ausgestaltungen und Befestigungen eines erfindungsgemäßen Leitrohres beschreiben.Various configurations and attachments of a guide tube according to the invention are described below with reference to FIG. 1.
In Figur 2 ist gezeigt, daß sich ein Leitrohr 11 auf einem Absatz 12 abstützt. Mit der Bezugsziffer 13 ist ein zumindest teilweise dargestelltes Ventil (insbesondere Abgasrückführventil) bezeichnet, welches an dem Flansch 8 unter Zwischenschaltung einer Dichtung befestigt wird, wobei dies durch Schrauben, die in die Befestigungsbohrungen 10 eingeschraubt werden, erfolgt. Diese Befestigung hat den Vorteil, daß innerhalb der Bohrung keine weiteren Bearbeitungen nötig sind. Es ist denkbar, insbesondere dann, wenn die Bohrung 9 beim Herstellen des Drosselklap- penstutzens 3 eingegossen wird, diese in Richtung des Inneren des Drosselklappenstutzens 3 konisch auszuführen, um die Verliersicherheit zu gewährleisten.In Figure 2 it is shown that a guide tube 11 is supported on a shoulder 12. Reference numeral 13 denotes an at least partially shown valve (in particular exhaust gas recirculation valve) which is fastened to the flange 8 with the interposition of a seal, this being done by means of screws which are screwed into the fastening bores 10. This attachment has the advantage that no further processing is necessary within the bore. It is conceivable, particularly if the bore 9 is used to manufacture the throttle valve. Penstutzens 3 is poured, this conical towards the inside of the throttle valve connector 3 to ensure the security against loss.
In Figur 3 ist gezeigt, daß das Leitrohr 11 in seinem Endbereich, der in Richtung des Ventiles 13 zeigt, einen Kragen 14 aufweist. Mit diesem Kragen 14 kann das Leitrohr 11 entweder an der Dichtfläche des Flansches 8 oder aber auch an einem entsprechend geformten Absatz innerhalb des Ventiles 13 verliersicher gehalten werden. Dies hat den Vorteil, daß neben der Einbringung der Bohrung 9 in die Lufteinlaßleitung 1 oder den Drosselklappenstutzen 3 keine weitere Bearbeitung derselben erforderlich ist und eine einfache Montage gegeben ist.FIG. 3 shows that the guide tube 11 has a collar 14 in its end region, which points in the direction of the valve 13. With this collar 14, the guide tube 11 can be held captively either on the sealing surface of the flange 8 or else on a correspondingly shaped shoulder within the valve 13. This has the advantage that in addition to the introduction of the bore 9 into the air inlet line 1 or the throttle valve connector 3, no further processing of the same is required and simple assembly is provided.
Ein weiterer Vorteil besteht darin, daß dann, wenn das Leitrohr 11 schon in dem Ventil 13 eingesetzt ist, eine einfache und schnelle Montage dieser beiden Elemente gegeben ist.Another advantage is that when the guide tube 11 is already inserted in the valve 13, a simple and quick assembly of these two elements is provided.
In den Figuren 4 bis 6 ist gezeigt, daß das Leitrohr 11 fest mit dem Drosselklappenstutzen 3 (alternativ mit der Lufteinlaßleitung 1 ) verbunden ist, wobei in Figur 6 auch der Preßvorgang dargestellt ist.In Figures 4 to 6 it is shown that the guide tube 11 is firmly connected to the throttle valve connector 3 (alternatively with the air inlet line 1), the pressing process being shown in Figure 6.
In Figur 4 ist gezeigt, daß in dem Drosselklappenstutzen 3 wieder das Leitrohr 11 in die Bohrung 9 eingesetzt wird. Bei dieser Ausgestaltung ist es besonders von Vorteil, wenn es sich bei dem Leitrohr 11 um ein handelsübliches Stück Rohr mit einer solchen Länge handelt, bei der das Rohr einerseits nicht über die Dichtfläche des Flansches 8 hinausragt und andererseits ein Stück in die Lufteinlaßleitung 1 beziehungsweise den Drosselklappenstutzen 3 zur gezielten Zuführung des Fluides hineinragt. Der Innendurchmesser des Leitrohres 11 ist dabei so zu wählen, daß das erforderliche Volumen an weiterem Fluid zugeführt werden kann. In Figur 5 ist das eingesetzte Leitrohr 11 nach Abschluß des Preßvorganges gezeigt, wobei mit der Bezugsziffer 15 eine umlaufende Nut in dem Drosselklappenstutzen 3 bezeichnet ist, in die nach Abschluß des Preßvorganges das aufgeweitete Rohrende 16 des Leitrohres 11 eingreift. Dadurch ist zum einen die Verliersicherheit sichergestellt; der Preßvorgang kann dabei derart ausgeführt werden, daß das aufgeweitete Rohrende 16 das Leitrohr 11 dichtend mit dem Drosselklappenstutzen 3 verbindet, wobei dies nicht unbedingt erforderlich ist, da durch Befestigung des Ventiles 13 an dem Flansch 8, insbesondere unter Zwischenschaltung einer Dichtung, die Dichtwirkung für das zugeführte Fluid sichergestellt wird.FIG. 4 shows that the guide tube 11 is inserted into the bore 9 again in the throttle valve connector 3. In this embodiment, it is particularly advantageous if the guide tube 11 is a commercially available piece of tube with a length in which the tube on the one hand does not protrude beyond the sealing surface of the flange 8 and on the other hand a piece into the air inlet line 1 or Throttle body 3 protrudes for the targeted supply of the fluid. The inner diameter of the guide tube 11 is to be selected so that the required volume of additional fluid can be supplied. In Figure 5, the guide tube 11 is shown after completion of the pressing process, with the reference numeral 15 denotes a circumferential groove in the throttle valve body 3, in which the widened tube end 16 of the guide tube 11 engages after the pressing process. On the one hand, this ensures security against loss; the pressing process can be carried out in such a way that the widened tube end 16 connects the guide tube 11 sealingly to the throttle valve connector 3, although this is not absolutely necessary since the valve 13 is attached to the flange 8, in particular with the interposition of a seal, for the sealing effect the supplied fluid is ensured.
In Figur 6 ist der eigentliche Preßvorgang dargestellt, wozu ein Gegenhalter 17 in das Innere des Drosselklappenstutzens 3 (oder der Lufteinlaßleitung 1) in eine Montageposition für das Leitrohr 11 eingeführt wird. Das Leitrohr 11 wird dann von außen in die Bohrung 9 eingeführt, bis es mit seinem einen Ende an dem Gegenhalter 17 zum Anliegen kommt. Die Position des Gegenhalters 17 sowie die Länge des Leitrohres 11 sind insofern aufeinander abgestimmt, daß das dem Gegenhalter 17 abgewandte Ende des Leitrohres 11 auf Höhe der umlaufenden Nut 15 endet. Danach wird ein Preßwerkzeug 18 (beispielsweise ein Stempel, der end- seitig eine konische Abflachung, wie in Figur 6 gezeigt ist, aufweist) in Preßrichtung 19 bewegt, so daß das Rohrende im Bereich der umlaufenden Nut 15 aufgeweitet wird und je nach Preßdruck beziehungsweise Ausgestaltung des Endes des Preßwerkzeuges 18 dichtend in der umlaufenden Nut 15 zum Anliegen kommt. Somit ist mit einem einfachen und kostengünstigen Leitrohr 11 eine große Dichtfläche realisierbar und die erforderliche Verliersicherheit gegeben. Darüber hinaus kann der Einsatz des Gegenhalters 17 und des Preßwerkzeuges 18 sowie der gesamte Preßvorgang für die Serienproduktion automatisiert werden. In den Figuren 7 und 8 ist wiederum ein Leitrohr 11 gezeigt, das in seinem einen Endbereich, mit dem es in die Lufteinlaßleitung 1 hineinragt, eine Abflachung 20 aufweist. Diese Abflachung 20 kann beispielsweise abgedreht werden, wobei diese auch bei den in den vorangegangenen Figuren gezeigten Leitrohren zum Einsatz kommen kann, um die Montage zu vereinfachen. In seinem anderen Endbereich, der in Richtung des Ventiles 13 zeigt, weist das Leitrohr 11 eine Dreiecksform 21 auf, um eine zusätzliche Vorspannung in dem Bereich der umlaufenden Nut 15 zu erzeugen, und um nach Ausführung des Preßvorganges den Festsitz des Leitrohres 11 zu gewährleisten.The actual pressing process is shown in FIG. 6, for which purpose a counter-holder 17 is inserted into the interior of the throttle valve connector 3 (or the air inlet line 1) into an assembly position for the guide tube 11. The guide tube 11 is then inserted from the outside into the bore 9 until it comes to rest on the counter-holder 17 with its one end. The position of the counter-holder 17 and the length of the guide tube 11 are coordinated to the extent that the end of the guide tube 11 facing away from the counter-holder 17 ends at the level of the circumferential groove 15. Then a pressing tool 18 (for example a punch which has a conical flattening at the end, as shown in FIG. 6) is moved in the pressing direction 19, so that the pipe end is widened in the region of the circumferential groove 15 and depending on the pressing pressure or design of the end of the pressing tool 18 comes to rest sealingly in the circumferential groove 15. A large sealing surface can thus be realized with a simple and inexpensive guide tube 11 and the required security against loss is provided. In addition, the use of the counter-holder 17 and the pressing tool 18 and the entire pressing process for series production can be automated. FIGS. 7 and 8 again show a guide tube 11 which has a flattened portion 20 in its one end region with which it projects into the air inlet line 1. This flattened portion 20 can be turned off, for example, whereby it can also be used in the guide tubes shown in the previous figures in order to simplify the assembly. In its other end region, which points in the direction of the valve 13, the guide tube 11 has a triangular shape 21 in order to generate an additional prestress in the region of the circumferential groove 15 and to ensure that the guide tube 11 is firmly seated after the pressing operation has been carried out.
In der Figur 9 ist ein Leitrohr 11 gezeigt, welches in dem Drosselklappenstutzen 3 in einer umlaufenden Nut 22 befestigt, die stufenförmig oder weitestgehend rund ausgeführt ist.FIG. 9 shows a guide tube 11 which is fastened in the throttle valve connector 3 in a circumferential groove 22, which is designed in a step-like or largely round manner.
In der Figur 10 ist ein Drosselklappenstutzen 3 gezeigt, der eine stufenförmige Bohrung 9 aufweist, wobei der nach innen gerichtete Durchmesser der Bohrung weitestgehend dem Durchmesser des Leitrohres 11 entspricht und dieses aufnimmt. Der nach außen gerichtete Teil hat einen Durchmesser, der größer ist als der Außendurchmesser des Leitrohres 11 , wodurch ein Absatz entsteht, mittels dem das Leitrohr 11 , das an diesem Ende vor dem Einsetzen aufgeweitet wurde oder nach dem Einsetzen aufgeweitet wird, form- und/oder kraftschlüssig und verliersicher gehalten wird. BezugszeichenlisteFIG. 10 shows a throttle valve connector 3 which has a step-shaped bore 9, the inward diameter of the bore largely corresponding to the diameter of the guide tube 11 and receiving it. The outwardly directed part has a diameter which is larger than the outer diameter of the guide tube 11, which creates a shoulder by means of which the guide tube 11, which was widened at this end before insertion or is expanded after insertion, is shaped and / or is held non-positively and captively. Reference list
1. Lufteinlaßleitung1. Air intake line
2. Strömungsrichtung2. Flow direction
3. Drosselklappenstutzen3. Throttle body
4. Drosselklappe4. Throttle valve
5. Drosselklappenwelle5. Throttle valve shaft
6. Gehäuse (dahinter: Antrieb)6. Housing (behind: drive)
7. Ansaugrohr7. Intake pipe
8. Flansch8. Flange
9. Bohrung9. Hole
10. Befestigungsbohrungen10. Mounting holes
11. Leitrohr11. Guide tube
12. Absatz12th paragraph
13. Ventil13. Valve
14. Kragen14. Collar
15. umlaufende Nut15. circumferential groove
16. aufgeweitetes Rohrende16. widened pipe end
17. Gegenhalter17. Counterhold
18. Preßwerkzeug18. Press tool
19. Preßrichtung19. Press direction
20. Abflachung20. Flattening
21. Dreiecksform 22. Nut 21. Triangular shape 22. Groove

Claims

12Ansaugvorrichtung für eine BrennkraftmaschinePatentansprüche 12 Suction device for an internal combustion engine
1. Ansaugvorrichtung für eine Brennkraftmaschine, der über eine Lufteinlaßleitung (1 ) zumindest Verbrennungsluft sowie ein weiteres Fluid zuführbar ist, dadurch gekennzeichnet, daß die Lufteinlaßleitung (1 ) eine Öffnung, insbesondere eine Bohrung (9) aufweist, durch die ein Leitrohr (11 ) in die Lufteinlaßleitung (1 ) hineinragt.1. Intake device for an internal combustion engine, at least combustion air and a further fluid can be supplied via an air inlet line (1), characterized in that the air inlet line (1) has an opening, in particular a bore (9), through which a guide tube (11) protrudes into the air inlet line (1).
2. Ansaugvorrichtung nach Anspruch 1 , dadurch gekennzeichnet, daß die Lufteinlaßleitung (1 ) einen Drosselklappenstutzen (3) mit einer Drosselklappe (4) aufweist, wobei die Bohrung (9) mit dem Leitrohr (11 ) im Bereich des Drosselklappenstutzens (3) angeordnet ist.2. Suction device according to claim 1, characterized in that the air inlet line (1) has a throttle body (3) with a throttle valve (4), the bore (9) with the guide tube (11) being arranged in the region of the throttle body (3) .
3. Ansaugvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Lufteinlaßleitung (1) einen Flansch (8) zur Anbringung eines Ventiles (13) zum Zuführen des weiteren Fluids aufweist, wobei die Bohrung (9) mit dem Leitrohr (11 ) im Bereich des Flansches (8) angeordnet ist.3. Suction device according to claim 1 or 2, characterized in that the air inlet line (1) has a flange (8) for attaching a valve (13) for supplying the further fluid, the bore (9) with the guide tube (11) in Area of the flange (8) is arranged.
4. Ansaugvorrichtung nach Anspruch 1 , 2 oder 3, dadurch gekennzeichnet, daß die Lufteinlaßleitung (1 ) oder der Flansch (8) mit dem Leitrohr (11 ) fest verbindbar ist.4. Suction device according to claim 1, 2 or 3, characterized in that the air inlet line (1) or the flange (8) with the guide tube (11) is firmly connectable.
5. Ansaugvorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die feste Verbindung mittels eines Preßvorganges erzielbar ist. 135. Suction device according to claim 4, characterized in that the fixed connection can be achieved by means of a pressing process. 13
6. Ansaugvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß in der Lufteinlaßleitung (1 ) oder in dem Flansch (8) im Bereich der Bohrung (9) eine zumindest teilweise umlaufende Nut (15) vorgesehen ist, in die ein Endbereich des Leitrohres (11 ) einpreßbar ist.6. Suction device according to one of the preceding claims, characterized in that in the air inlet line (1) or in the flange (8) in the region of the bore (9) an at least partially circumferential groove (15) is provided, in which an end region of the guide tube (11) can be pressed.
7. Ansaugvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Leitrohr (11 ) in die Bohrung (9) einsetzbar ist und Mittel, insbesondere einen Kragen (14), aufweist, mittels derer das Leitrohr (11 ) in einer Sollposition haltbar ist.7. Suction device according to one of the preceding claims, characterized in that the guide tube (11) can be inserted into the bore (9) and has means, in particular a collar (14), by means of which the guide tube (11) can be held in a desired position .
8. Ansaugvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Leitrohr (11 ) in seinem einen Endbereich, mit dem es in die Lufteinlaßleitung (1 ) hineinragt, eine Abflachung (20) aufweist.8. Suction device according to one of the preceding claims, characterized in that the guide tube (11) has a flattened portion (20) in its one end region with which it projects into the air inlet line (1).
9. Ansaug Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Leitrohr (11) in seinem anderen Endbereich, der in Richtung des Ventiles (13) zeigt, eine Dreiecksform (21) aufweist.9. Intake device according to one of the preceding claims, characterized in that the guide tube (11) has a triangular shape (21) in its other end region which points in the direction of the valve (13).
10. Ansaugvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Leitrohr (11) an dem Ventil (13) angeordnet oder Bestandteil des Ventiles (13) ist.10. Suction device according to one of the preceding claims, characterized in that the guide tube (11) on the valve (13) is arranged or is part of the valve (13).
11. Ansaugvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das weitere Fluid Abgas einer Brennkraftmaschine und das Ventil (13) ein Abgasrückführventil ist. 11. Intake device according to one of the preceding claims, characterized in that the further fluid exhaust gas from an internal combustion engine and the valve (13) is an exhaust gas recirculation valve.
EP99908924A 1998-02-24 1999-02-18 Intake device for an internal combustion engine Expired - Lifetime EP1058782B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19807463 1998-02-24
DE19807463A DE19807463A1 (en) 1998-02-24 1998-02-24 Intake device for IC engine
PCT/EP1999/001060 WO1999043946A1 (en) 1998-02-24 1999-02-18 Intake device for an internal combustion engine

Publications (2)

Publication Number Publication Date
EP1058782A1 true EP1058782A1 (en) 2000-12-13
EP1058782B1 EP1058782B1 (en) 2002-10-02

Family

ID=7858585

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99908924A Expired - Lifetime EP1058782B1 (en) 1998-02-24 1999-02-18 Intake device for an internal combustion engine

Country Status (6)

Country Link
US (1) US6443134B1 (en)
EP (1) EP1058782B1 (en)
KR (1) KR20010041274A (en)
BR (1) BR9908180A (en)
DE (2) DE19807463A1 (en)
WO (1) WO1999043946A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10011933A1 (en) * 2000-03-11 2001-09-27 Daimler Chrysler Ag Air induction device for direct fuel injection engine has second induction sector not connected to first one or to exhaust gas feedback device
DE10054264A1 (en) * 2000-11-02 2002-05-08 Opel Adam Ag Intake pipe unit for feeding air into combustion chambers in a multi-cylinder internal combustion engine has an air-collection chamber, a throttle valve connection piece with an adjustable throttle valve and gas exchange valves.
AU2003273298B2 (en) * 2002-09-08 2008-03-06 Applera Corporation Methods, compositions and libraries pertaining PNA dimer and PNA oligomer synthesis
JP4657250B2 (en) * 2007-05-29 2011-03-23 株式会社デンソー Intake device

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4741295A (en) * 1985-09-09 1988-05-03 Honda Giken Kogyo Kabushiki Kaisha Intake manifold system for V-type multiple cylinder internal combustion engine
JPS63164554A (en) * 1986-12-25 1988-07-07 Fujitsu Ltd Automatic recognizing system for data speed
JPH07691Y2 (en) * 1988-07-12 1995-01-11 日産自動車株式会社 EGR valve mounting structure for internal combustion engine
DE3932300C2 (en) * 1989-09-28 2003-03-06 Siemens Ag throttle body
FR2669078B1 (en) * 1990-11-14 1994-11-25 Peugeot DEVICE FOR RECIRCULATION OF EXHAUST GASES FROM AN INTERNAL COMBUSTION ENGINE.
JP2548036Y2 (en) * 1991-01-25 1997-09-17 アイシン精機株式会社 Exhaust gas recirculation device
DE4111240C1 (en) * 1991-04-08 1992-06-04 Fa. Carl Freudenberg, 6940 Weinheim, De
WO1994004815A1 (en) * 1992-08-22 1994-03-03 Dr. Ing. H.C.F. Porsche Aktiengesellschaft Air-aspiration system for an internal-combustion engine
FR2710952B1 (en) * 1993-10-08 1995-11-17 Renault Exhaust gas recirculation device for an internal combustion engine.
DE4338194C2 (en) * 1993-11-09 2003-04-03 Pierburg Gmbh Air intake duct system for internal combustion engines
US5492104A (en) * 1994-11-03 1996-02-20 General Motors Corporation Exhaust gas recirculation for an internal combustion engine
JP3095665B2 (en) * 1995-10-16 2000-10-10 株式会社日本自動車部品総合研究所 Evaporative fuel control system for internal combustion engine
DE19627035C2 (en) * 1996-07-05 1998-07-16 Elringklinger Gmbh Exhaust gas recirculation device
US5970960A (en) * 1996-09-18 1999-10-26 Nissan Motor Co., Ltd. Exhaust gas recirculation system of internal combustion engine
DE19649713A1 (en) * 1996-11-30 1998-06-04 Daimler Benz Ag Intake for multi=cylinder combustion engine with exhaust gas re=circulation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9943946A1 *

Also Published As

Publication number Publication date
BR9908180A (en) 2000-10-24
EP1058782B1 (en) 2002-10-02
DE19807463A1 (en) 1999-08-26
DE59902927D1 (en) 2002-11-07
WO1999043946A1 (en) 1999-09-02
US6443134B1 (en) 2002-09-03
KR20010041274A (en) 2001-05-15

Similar Documents

Publication Publication Date Title
EP1394380B1 (en) Supercharging system for an internal combustion engine
DE102011101506B4 (en) Motor assembly and method of manufacture
DE102006008511B4 (en) intake manifold
DE102006000348A1 (en) Gas recirculation device
DE10129916A1 (en) Device for fastening an exhaust gas turbocharger to an exhaust manifold of an internal combustion engine
DE69928331T2 (en) Turbocharger with blow-off valve actuator
DE102015200053B4 (en) Exhaust gas turbocharger for a low-pressure EGR system and method for its operation
DE102006008783A1 (en) Fresh gas supplying device for omni bus turbocharged piston internal combustion engine, has pipe line units that are designed as separate module, at whose housing pipeline connections are fitted as supporting unit for module
DE102015223740A1 (en) Wastegate assembly for a turbocharger
DE10216773B4 (en) Cooler for an exhaust gas taken from the main exhaust gas stream of an internal combustion engine
EP1260697B1 (en) Turbocharged internal combustion engine
DE102005049309A1 (en) Device for returning and cooling exhaust gas of an internal combustion engine
EP0607505B1 (en) Arrangement of a valve for exhaust gas recirculation in an internal combustion engine
EP1058782B1 (en) Intake device for an internal combustion engine
EP0886063A2 (en) Intake air manifold
DE102010005163A1 (en) Secondary air system
WO1999034110A1 (en) Suction device for an internal combustion engine
EP1508684B1 (en) Exhaust intake device for an internal combustion engine
DE102014220511A1 (en) TURBOCHARGER
DE102014116974A1 (en) EGR control valve device
DE19838588A1 (en) Connecting clamp for pipe connection between manifold of road vehicle heat exchangere and pipe conduit feeding heat exchange fluid to manifold or pipe conduit leading fluid away from manifold
EP1182344B1 (en) Device to recirculate gas for an internal combustion engine
DE102009048713A1 (en) Ventilation unit for internal combustion engine for motor vehicle, has compressor of exhaust turbocharger, where compressor is arranged in intake section and has compressor wheel
DE10050158A1 (en) Connection between the exhaust manifold and turbo-charger, in a vehicle motor, has the exhaust manifold pushed into the turbo-charger housing with a weld at the overlap to secure the joint
EP3268599B1 (en) Intake module of a fresh air system

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20000720

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB

17Q First examination report despatched

Effective date: 20010629

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SIEMENS AKTIENGESELLSCHAFT

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 59902927

Country of ref document: DE

Date of ref document: 20021107

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20030130

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20030703

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20050208

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20050224

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060218

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20060218

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20061031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060228

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090219

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100901