EP0024606A1 - Inlet manifold system for internal-combustion engines with four to six cylinders in line - Google Patents

Inlet manifold system for internal-combustion engines with four to six cylinders in line Download PDF

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Publication number
EP0024606A1
EP0024606A1 EP80104692A EP80104692A EP0024606A1 EP 0024606 A1 EP0024606 A1 EP 0024606A1 EP 80104692 A EP80104692 A EP 80104692A EP 80104692 A EP80104692 A EP 80104692A EP 0024606 A1 EP0024606 A1 EP 0024606A1
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EP
European Patent Office
Prior art keywords
sections
approximately
end sections
manifolds
plane
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Granted
Application number
EP80104692A
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German (de)
French (fr)
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EP0024606B1 (en
Inventor
Wolfgang Kaindl
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Publication of EP0024606A1 publication Critical patent/EP0024606A1/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
    • F02M35/1034—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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/20—Multi-cylinder engines with cylinders all in one line
    • 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
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10072—Intake runners
    • 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
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10111—Substantially V-, C- or U-shaped ducts in direction of the flow path
    • 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
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10118—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements with variable cross-sections of intake ducts along their length; Venturis; Diffusers
    • 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
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10131—Ducts situated in more than one plane; Ducts of one plane crossing ducts of another plane
    • 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
    • F02M35/10216—Fuel injectors; Fuel pipes or rails; Fuel pumps or pressure regulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B2075/1804—Number of cylinders
    • F02B2075/1816—Number of cylinders four
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B2075/1804—Number of cylinders
    • F02B2075/1824—Number of cylinders six

Definitions

  • the invention relates to an intake manifold system of the type described in the preamble of claim 1.
  • the object of the invention is to arrange the curved intermediate sections of the individual intake manifolds in such a way that the total length of the individual intake manifolds can be increased even further without considerable additional space requirement and without mutual spatial overlapping of the individual intake manifolds which hampers the one-piece cast formation, while at the same time having sufficiently large radii of curvature.
  • An intake manifold system 1 for a 6-cylinder injection engine, not shown, as an Otto engine essentially consists of a distribution chamber 2 with an air inlet 2 'and six individual intake pipes 3, 4, 5, 6, 7 and 8.
  • Initial sections 9 of all individual intake pipes of the same length 3 to 8 proceed in a plane 10 parallel and in pairs opposite to each other in two groups 3 to 5 and 6 to 8 from the distribution chamber 2.
  • the individual intake pipes 3 to 8 have curved intermediate sections 11, 12, 13, 14, 15 and 16, which run largely parallel to one another, and end sections 17, 18, 19, 20, 21 and 22, which in turn can be connected to inlet ducts of the internal combustion engine, not shown, with flanges 23 have.
  • the end sections 17 to 22 extend approximately in the same direction parallel to one another and approximately in a plane 24 substantially parallel to the plane 10 of the starting sections 9.
  • the inner cross section of the individual suction pipes 3 to 8 decreases continuously from the distribution chamber 2 to the connection ends 17 to 22 .
  • the distribution chamber 2 is arranged approximately centrally across the row of the end sections 17 to 22.
  • the curved intermediate sections 11 to 16 of the individual intake pipes 3 to 8 are each composed of first bends 25 with a 90 ° bend and each further bend 26, which form an approximately U-shaped connection with the respective end sections 17 to 22 of the individual intake pipes 3 to 8 .
  • the further elbows 26 of the outer individual intake pipes 3 and 8 are designed as flat 180 ° elbows, each lying in a plane 27, which is at the level 10 of the initial sections 9, in which the first elbows 25 are also essentially arranged net, is approximately at right angles.
  • the further elbows 26 of the inner individual intake pipes 4 to 7 strive from their connection point with the first elbows 25 in a fan shape towards the end sections 18 to 21. They each consist of two 90 ° elbows, which are twisted against each other at their connection point. In the area of these connection points, the further elbows 26 also have a flat curvature transverse to the planes determined by their two 90 ° elbows.
  • end sections 17 to 22 In the longitudinal direction of the end sections 17 to 22 are approximately roof-shaped walls 28 towards the distribution chamber 2 between two end sections 17 and 18, 18 and 19, 20 and 21 and 21 and 22 of the two groups 3 to 5 and 6 to 8 of the individual suction pipes 3 to 8 arranged. These also form a stiffener, a molded part separation between two mold parts and in the area of the connecting ends or the flanges 23 of the end sections 17 to 22 at their gable ends each have a fastening point 29 with a nut thread for parts of the fuel system, not shown, such as injection nozzles and fuel rail for which there are 26 favorable space conditions within the U-shaped further manifold.
  • the flanges 23 of all end sections 17 to 22 are connected to each other for further stiffening and each have a receptacle 30 for injection nozzles on their upper sides.
  • the individual intake pipes 3 to 8 are connected to one another both along the first elbows 25 by walls 31 and transversely to the further elbows 26 by ribs 32 in the region of the molded part surfaces.
  • the triangular spaces 33 between the parts of the further elbows 26 which diverge in a fan shape are also closed with walls. This avoids difficult to control transitions and cleaning points between the transitions of the individual mold parts.
  • the arrangement of the individual intake pipes according to the invention results in a smooth transition from the intermediate sections 11 to 16 into the mutually parallel final sections 17 to 22, although the distances between the individual intake pipes 3 to 5 increase from a first maximum value in the area of the first elbows 25 to a minimum value change the connection point between the first manifolds 25 and the further manifolds 26 to a second maximum value over the entire length of the end sections 17 to 22.
  • this course of the individual intake pipes 3 to 8 offers the possibility of realizing particularly large lengths thereof without the space requirement of the entire intake pipe system 1 in one direction, such as e.g. by particularly extending the final sections 17 to 22.
  • this arrangement For installation in the engine compartment of motor vehicles, which is often narrowed by additional units, this arrangement has the advantage that the greatest longitudinal expansion does not go beyond the spacing of the connections to the outer inlet ducts of a machine, while the transverse expansion decreases toward the longitudinal ends, as a result of which favorable conditions for the Space requirements of other additional units in the area of both machine end areas result.
  • this design of the individual suction pipes enables a particularly large length of the same to be realized with a particularly favorable space requirement.

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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)
  • Characterised By The Charging Evacuation (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

The inlet supply manifold for a combustion engine with four or six cylinders in line comprises a distribution chamber (2) and two symmetrical groups of individual inlet pipes having approximately the same length (3, 4, 5, 6, 7, 8 and 9). The pipes have each a first portion (9) located in the plane of the distribution chamber, followed by a second angled portion (11, 12, 13, 14, 15 and 16) and a third straight portion arranged in parallel to the contiguous portion and provided with a device for connection to the inlet supply piping of the combustion chambers. The third straight portions are arranged at right angles with respect to the first portion and in a plane parallel to the said first portion. The intermediate angled portions are bent so as to form a U connected to the third straight portion. The first portion (26) of the intermediate angled portion is bent at 180` and the second portion is comprised of two elbows at 90`.

Description

Die Erfindung bezieht sich auf eine Saugrohranlage der im Oberbegriff des Anspruches 1 beschriebenen Bauart.The invention relates to an intake manifold system of the type described in the preamble of claim 1.

Bei bekannten Saugrohranlagen dieser und ähnlicher Bauarten (DE-OS 15 26 707, DE-OS 27 11 195 und US-PS 2 862 490) sind stets die an die Anfangsabschnitte anschließenden gekrümmten Zwischenabschnitte aus der Ebene der Anfangsabschnitte heraus in Richtung zur Ebene der Schlußabschnitte hin gekrümmt, wodurch das dabei vorge- sehene enge gegenseitige räumliche Übergreifen der Einzelsaugrohre begünstigt wird. Nachteilig ist dabei jedoch, daß die Saugrohrlänge bei einem bestimmten Raumbedarf der Saugrohranlage und durch die Ausformbedingungen für eine einteilige Gußausbildung an Grenzen stoßen und somit für die Abstimmung auf den jeweiligen Längenbedarf nicht immer voll ausreichen.In known intake manifolds of this and similar types (DE-OS 15 26 707, DE-OS 27 11 195 and US-PS 2 862 490), the curved intermediate sections adjoining the initial sections are always out of the plane of the initial sections in the direction of the plane of the final sections curved towards it, which favors the tight mutual spatial overlap of the individual suction pipes. The disadvantage here, however, is that the intake manifold length reaches its limits when the intake manifold system requires a certain amount of space and due to the molding conditions, and is therefore not always fully adequate for matching the respective length requirement.

Aufgabe der Erfindung ist es, die gekrümmten Zwischenabschnitte der Einzelsaugrohre in ihrem Verlauf so anzuordnen, daß die Gesamtlänge der Einzelsaugrohre ohne erheblichen zusätzlichen Raumbedarf und ohne ein die einteilige Gußausbildung behinderndes gegenseitiges räumliches Übergreifen der Einzelsaugrohre bei zugleich ausreichend großen Krümmungsradien noch weiter vergrößert werden kann.The object of the invention is to arrange the curved intermediate sections of the individual intake manifolds in such a way that the total length of the individual intake manifolds can be increased even further without considerable additional space requirement and without mutual spatial overlapping of the individual intake manifolds which hampers the one-piece cast formation, while at the same time having sufficiently large radii of curvature.

Von der Erfindung wird diese Aufgabe durch die kennzeichnenden Merkmale des Anspruches 1 gelöst. Auf diese Weise verlaufen die Einzelsaugrohre über ihre gesamte Länge innerhalb jeder Gruppe weitgehend parallel zueinander, wobei lediglich deren Abstände voneinander über die Länge gesehen, zunächst ab- und dann wieder zunehmen. Für den Raumbedarf der Saugrohranlage ist es hierbei vorteilhaft, daß die Einzelsaugrohre der in der Reihe außenliegenden Schlußabschnitte die größte Längsausdehnung der Saugrohranlage bestimmen, während diese außenliegenden Einzelsaugrohre mit ihren gekrümmten Zwischenabschnitten eine geringere Querausdehnung aufweisen als die Einzelsaugrohre für die in der Reihe dazwischenliegenden Anschlußenden. Dadurch ergibt sich ein für den Maschineneinbau in Kraftfahrzeuge günstiger Raumbedarf, weil an beiden Enden der Saugrohranlage Raum für andere Zusatzaggregate geschaffen ist.This object is achieved by the invention with the characterizing features of claim 1. To this The individual intake pipes run largely parallel to one another over their entire length within each group, only their distances from one another seen over the length, first decreasing and then increasing again. For the space requirement of the intake manifold system, it is advantageous here that the individual intake pipes of the end sections lying in the row determine the greatest longitudinal extent of the intake manifold system, while these external single intake pipes with their curved intermediate sections have a smaller transverse expansion than the individual intake pipes for the ends of the connection between them. This results in a space requirement which is favorable for machine installation in motor vehicles, because space is created at both ends of the intake manifold system for other additional units.

Bei den bekannten Ausbildungen nach der DE-OS 15 26 707 und US-PS 2 862 490 sind zwar ebenfalls die vorgenannten räumlichen Vorteile gegeben, jedoch sind dort sowohl die gußtechnisch nachteiligen räumlichen Überschneidungen der Einzelsaugrohre als auch die für die Maschinenabstimmung ungünstigen geringen Längen der Einzelsaugrohre vorhanden.In the known designs according to DE-OS 15 26 707 and US-PS 2 862 490, the aforementioned spatial advantages are also given, but there are both the casting overlaps, which are disadvantageous in terms of casting technology, and the small lengths of the individual suction pipes, which are disadvantageous for machine tuning available.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigen:

  • Fig. 1 die Stirnansicht einer Saugrohranlage für eine 6-Zylinder-Reihen-Brennkraftmaschine,
  • Fig. 2 die Draufsicht der Saugrohranlage nach Fig. 1,
  • Fig. 3 die Seitenansicht der Saugrohranlage nach Fig. 1 und 2,
  • Fig. 4 den Schnitt nach der Linie IV-IV in Fig. 1 und
  • Fig. 5 den Schnitt nach der Linie V-V in Fig. 4.
In the drawing, an embodiment of the invention is shown. Show it:
  • 1 is a front view of an intake manifold system for a 6-cylinder in-line internal combustion engine,
  • 2 shows the top view of the intake manifold system according to FIG. 1,
  • 3 shows the side view of the intake manifold system according to FIGS. 1 and 2,
  • Fig. 4 shows the section along the line IV-IV in Fig. 1 and
  • 5 shows the section along the line VV in Fig. 4th

Eine Saugrohranlage 1 für eine nicht dargestellte 6-Zylinder-Einspritz-Reihen-Brennkraftmaschine als OttoMotor besteht im wesentlichen aus einer Verteilkammer 2 mit einem Lufteinlaß 2' und sechs Einzelsaugrohren 3, 4, 5, 6, 7 und 8. Anfangsabschnitte 9 aller gleichlangen Einzelsaugrohre 3 bis 8 gehen in einer Ebene 10 parallel und paarweise einander entgegengesetzt in zwei Gruppen 3 bis 5 und 6 bis 8 von der Verteilkammer 2 aus. Die Einzelsaugrohre 3 bis 8 weisen gekrümmte weitgehend parallel zueinander verlaufende Zwischenabschnitte 11, 12, 13, 14, 15 und 16 sowie Schlußabschnitte 17, 18. 19, 20, 21 und 22 auf, die ihrerseits mit Einlaßkanälen der nicht dargestellten Brennkraftmaschine verbindbare Anschlußenden mit Flanschen 23 haben. Die Schlußabschnitte 17 bis 22 erstrecken sich etwa gleichgerichtet parallel zueinander und etwa in einer zur Ebene 10 der Anfangsabschnitte 9 im wesentlichen parallelen Ebene 24. Der Innenquerschnitt der Einzelsaugrohre 3 bis 8 nimmt von der Verteilkammer 2 ausgehend bis zu den Anschlußenden 17 bis 22 hin stetig ab. Die Verteilkammer 2 ist etwa mittig querab von der Reihe der Schlußabschnitte 17 bis 22 angeordnet. Die gekrümmten Zwischenabschnitte 11 bis 16 der Einzelsaugrohre 3 bis 8 setzen sich aus jeweils ersten Krümmern 25 mit 90°-Krümmung und jeweils weiteren Krümmern 26 zusammen, die eine etwa U-förmige Verbindung mit den jeweiligen Schlußabschnitten 17 bis 22 der Einzelsaugrohre 3 bis 8 bilden. Die weiteren Krümmer 26 der äußeren Einzelsaugrohre 3 und 8 sind als ebene 180°-Krümmer ausgebildet, die jeweils in einer Ebene 27 liegen, die zur Ebene 10 der Anfangsabschnitte 9, in der auch die ersten Krümmer 25 im wesentlichen angeordnet sind, etwa rechtwinkelig verläuft. Die weiteren Krümmer 26 der inneren Einzelsaugrohre 4 bis 7 streben von ihrer Verbindungsstelle mit den ersten Krümmern 25 an fächerförmig zu den Schlußabschnitten 18 bis 21 hin auseinander. Sie setzen sich jeweils aus zwei 90°-Krümmern zusammen, die an ihrer Verbindungsstelle gegeneinander verdreht sind. Im Bereich dieser Verbindungsstellenweisen die weiteren Krümmer 26 zugleich eine flache Krümmung quer zu den von ihren beiden 90°-Krümmern bestimmten Ebenen auf. In Längsrichtung der Schlußabschnitte 17 bis 22 sind zur Verteilkammer 2 hin gerichtete etwa dachförmige Wände 28 zwischen jeweils zwei Schlußabschnitten 17 und 18, 18 und 19, 20 und 21 sowie 21 und 22 der beiden Gruppen 3 bis 5 und 6 bis 8 der Einzelsaugrohre 3 bis 8 angeordnet. Diese bilden zugleich eine Versteifung, eine Formteiltrennung zwischen zwei Gußformteilen und im Bereich der Anschlußenden bzw. der Flanschen 23 der Schlußabschnitte 17 bis 22 an ihren Giebelenden jeweils eine Befestigungsstelle 29 mit einer einem Muttergewinde für Teile nicht dargestellten Kraftstoffanlage, wie Einspritzdüsen und Kraftstoffverteilerleitung, für die innerhalb der U-förmigen weiteren Krümmer 26 günstige Platzverhältnisse bestehen. Die Flansche 23 aller Schlußabschnitte 17 bis 22 sind zur weiteren Versteifung miteinander verbunden und weisen an ihren Oberseiten je eine Aufnahme 30 für Einspritzdüsen auf. Die Einzelsaugrohre 3 bis 8 sind sowohl längs der ersten Krümmer 25 durch Wände 31 als auch quer zu den weiteren Krümmern 26 durch Rippen 32 im Bereich von Formteilflächen miteinander verbunden. Auch die dreieckigen Zwischenräume 33 zwischen den fächerförmig auseinanderstrebenden Teilen der weiteren Krümmer 26 sind Mit Wän= den verschlossen. Dadurch werden schwierig beherrschbare Übergänge sowie Putzstellen zwischen den Übergängen der einzelnen Gußformteile vermieden.An intake manifold system 1 for a 6-cylinder injection engine, not shown, as an Otto engine essentially consists of a distribution chamber 2 with an air inlet 2 'and six individual intake pipes 3, 4, 5, 6, 7 and 8. Initial sections 9 of all individual intake pipes of the same length 3 to 8 proceed in a plane 10 parallel and in pairs opposite to each other in two groups 3 to 5 and 6 to 8 from the distribution chamber 2. The individual intake pipes 3 to 8 have curved intermediate sections 11, 12, 13, 14, 15 and 16, which run largely parallel to one another, and end sections 17, 18, 19, 20, 21 and 22, which in turn can be connected to inlet ducts of the internal combustion engine, not shown, with flanges 23 have. The end sections 17 to 22 extend approximately in the same direction parallel to one another and approximately in a plane 24 substantially parallel to the plane 10 of the starting sections 9. The inner cross section of the individual suction pipes 3 to 8 decreases continuously from the distribution chamber 2 to the connection ends 17 to 22 . The distribution chamber 2 is arranged approximately centrally across the row of the end sections 17 to 22. The curved intermediate sections 11 to 16 of the individual intake pipes 3 to 8 are each composed of first bends 25 with a 90 ° bend and each further bend 26, which form an approximately U-shaped connection with the respective end sections 17 to 22 of the individual intake pipes 3 to 8 . The further elbows 26 of the outer individual intake pipes 3 and 8 are designed as flat 180 ° elbows, each lying in a plane 27, which is at the level 10 of the initial sections 9, in which the first elbows 25 are also essentially arranged net, is approximately at right angles. The further elbows 26 of the inner individual intake pipes 4 to 7 strive from their connection point with the first elbows 25 in a fan shape towards the end sections 18 to 21. They each consist of two 90 ° elbows, which are twisted against each other at their connection point. In the area of these connection points, the further elbows 26 also have a flat curvature transverse to the planes determined by their two 90 ° elbows. In the longitudinal direction of the end sections 17 to 22 are approximately roof-shaped walls 28 towards the distribution chamber 2 between two end sections 17 and 18, 18 and 19, 20 and 21 and 21 and 22 of the two groups 3 to 5 and 6 to 8 of the individual suction pipes 3 to 8 arranged. These also form a stiffener, a molded part separation between two mold parts and in the area of the connecting ends or the flanges 23 of the end sections 17 to 22 at their gable ends each have a fastening point 29 with a nut thread for parts of the fuel system, not shown, such as injection nozzles and fuel rail for which there are 26 favorable space conditions within the U-shaped further manifold. The flanges 23 of all end sections 17 to 22 are connected to each other for further stiffening and each have a receptacle 30 for injection nozzles on their upper sides. The individual intake pipes 3 to 8 are connected to one another both along the first elbows 25 by walls 31 and transversely to the further elbows 26 by ribs 32 in the region of the molded part surfaces. The triangular spaces 33 between the parts of the further elbows 26 which diverge in a fan shape are also closed with walls. This avoids difficult to control transitions and cleaning points between the transitions of the individual mold parts.

Durch die erfindungsgemäße Anordnung der Einzelsaugrohre ergibt sich ein fließender Übergang von den Zwischenabschnitten 11 bis 16 in die zueinander parallelen Schlußabschnitte 17 bis 22, obwohl sich die Abstände zwischen den Einzelsaugrohren 3 bis 5 von einem ersten Höchstwert im Bereich der ersten Krümmer 25 zu einem Minimalwert an der Verbindungsstelle zwischen den ersten Krümmern 25 und den weiteren Krümmern 26 zu einem zweiten Höchstwert über die gesamte Länge der Schlußabschnitte 17 bis 22 verändern. Ferner ergibt sich durch diesen Verlauf der Einzelsaugrohre 3 bis 8 die Möglichkeit,besonders große Längen derselben zu verwirklichen, ohne den Raumbedarf der gesamten Saugrohranlage 1 nach einer Richtung, wie z.B. durch alleinige Verlängerung der Schlußabschnitte 17 bis 22, besonders stark auszudehnen. Für den Einbau in oftmals durch Zusatzaggregate verengten Motorraum von Kraftfahrzeugen ergibt diese Anordnung den Vorteil, daß die größte Längsausdehnung nicht über den Abstand der Anschlüsse an die äußeren Einlaßkanäle einer Maschine hinausgeht, während die Querausdehnung zu den Längsenden hin abnimmt, wodurch sich günstige Verhältnisse für den Raumbedarf anderer Zusatzaggregate im Bereich beider Maschinenendbereiche ergeben. Insgesamt läßt sich durch diese Ausbildung der Einzelsaug-rohre eine besonders große Länge derselben mit besonders günstigem Raumbedarf verwirklichen.The arrangement of the individual intake pipes according to the invention results in a smooth transition from the intermediate sections 11 to 16 into the mutually parallel final sections 17 to 22, although the distances between the individual intake pipes 3 to 5 increase from a first maximum value in the area of the first elbows 25 to a minimum value change the connection point between the first manifolds 25 and the further manifolds 26 to a second maximum value over the entire length of the end sections 17 to 22. Furthermore, this course of the individual intake pipes 3 to 8 offers the possibility of realizing particularly large lengths thereof without the space requirement of the entire intake pipe system 1 in one direction, such as e.g. by particularly extending the final sections 17 to 22. For installation in the engine compartment of motor vehicles, which is often narrowed by additional units, this arrangement has the advantage that the greatest longitudinal expansion does not go beyond the spacing of the connections to the outer inlet ducts of a machine, while the transverse expansion decreases toward the longitudinal ends, as a result of which favorable conditions for the Space requirements of other additional units in the area of both machine end areas result. Overall, this design of the individual suction pipes enables a particularly large length of the same to be realized with a particularly favorable space requirement.

Claims (4)

1. Saugrohranlage für 4- bis 6-Zylinder-Reihenbrennkraftmaschinen, - mit einer Verteilkammer und - mit im wesentlichen gleichlangen, zwei etwa symmetrisch zueinander angeordnete Gruppen bildenden Einzelsaugrohren, - die mit Anfangsabschnitten etwa in einer Ebene paarweise einander entgegengesetzt von der Verteilkammer ausgehen und - die durchgehend gekrümmte Zwischenabschnitte sowie gleichgerichtete zueinander parallele Schlußabschnitte mit Anschlußenden für Einlaßkanäle der Maschine aufweisen, - wobei sich die Schlußabschnitte etwa rechtwinkelig zu den Anfangsabschnitten und im wesentlichen in einer zu derjenigen der Anfangsabschnitte annähernd parallelen Ebene erstrecken,
dadurch gekennzeichnet, - daß die Zwischenabschnitte (11, 12, 13, 14, 15 und 16) aller Einzelsaugrohre (3, 4, 5, 6, 7 und 8) von den Anfangsabschnitten (9) ausgehend mittels innerhalb deren gemeinsamer Ebene (10) angeordneter erster Krümmer (25) in zu den Schlußabschnitten (17, 18, 19, 20, 21 und 22) im wesentlichen entgegengesetzte Richtungen übergehen und - daß sich daran weitere Krümmer (26) anschließen, - die eine etwa U-förmige Verbindung mit den Schlußabschnitten (17, 18, 19, 20, 21 und 22) bilden. 1. Intake manifold system for 4- to 6-cylinder in-line internal combustion engines, - with a distribution chamber and with individual suction tubes of essentially the same length, forming two groups approximately symmetrically arranged to one another, - Which start with pairs of opposite sections of the distribution chamber and start in approximately one plane which have continuously curved intermediate sections and rectilinear mutually parallel end sections with connecting ends for inlet ducts of the machine, the final sections extending approximately at right angles to the initial sections and essentially in a plane approximately parallel to that of the initial sections,
characterized, - That the intermediate sections (11, 12, 13, 14, 15 and 16) of all individual suction pipes (3, 4, 5, 6, 7 and 8) starting from the starting sections (9) by means of the first manifold arranged within their common plane (10) (25) merge in substantially opposite directions to the end sections (17, 18, 19, 20, 21 and 22) and - That there are further manifolds (26) connected, - Which form an approximately U-shaped connection with the end sections (17, 18, 19, 20, 21 and 22). 2. Saugrohranlage nach Anspruch 1, dadurch gekennzeichnet, - daß die äußeren weiteren Krümmer (26) als ebene 180°-Krümmer und - die inneren weiteren Krümmer (26) als jeweils zwei aneinander anschließende. 90°-Krümmer ausgebildet sind, - die an ihrer Verbindungsstelle gegeneinander verdreht sind und/oder eine flache Krümmung quer zu ihren jeweiligen Ebenen aufweisen. 2. Intake pipe system according to claim 1, characterized in - That the outer further elbow (26) as a flat 180 ° elbow and - The inner further manifolds (26) as two adjoining each other. 90 ° elbow are formed - Which are twisted at their junction and / or have a flat curvature transverse to their respective planes. 3. Saugrohranlage nach Anspruch 1, dadurch gekennzeichnet, - daß sich die Zwischenabschnitte (11 bis 16) jeweils einer Gruppe (3 bis 5 bzw. 6 bis 8) der Einzelsaugrohre (3 bis 8) an den Übergangsstellen zwischen den ersten Krümmern (25) und den weiteren Krümmern (26) eng nähern und - daß anschließend die weiteren Krümmer (26) jeder Gruppe (3 bis 5 bzw. 6 bis 8) der Einzelsaugrohre (3 bis 8) zu ihren in Abständen angeordneten Schlußabschnitten (17 bis 22) hin fächerförmig auseinander streben. 3. intake manifold according to claim 1, characterized in - That the intermediate sections (11 to 16) each a group (3 to 5 or 6 to 8) of the individual suction pipes (3 to 8) at the transition points between the first manifolds (25) and the further manifolds (26) closely approach and - That then the further elbows (26) of each group (3 to 5 or 6 to 8) of the individual suction pipes (3 to 8) towards their spaced-apart end sections (17 to 22) strive towards each other in a fan shape. 4. Saugrohranlage nach Anspruch 1, dadurch gekennzeichnet, - daß sich in Längsrichtung der Schlußabschnitte (17 bis 22) etwa dachförmige Wände (28) zwischen jeweils zwei Schlußabschnitten (17 und 18, 18 und 19, 20 und 21 bzw. 21 und 22) erstrecken und - daß im Bereich der Anschlußenden (Flansche 23) der Schlußabschnitte (17 bis 22) am Giebelende der Wände jeweils Befestigungsstellen (29) fur Teile einer Kraftstoffanlage, wie Einspritzdüsen und Kraftstoffverteilerleitung, angeordnet sind. 4. intake manifold according to claim 1, characterized in - That extend in the longitudinal direction of the end sections (17 to 22) approximately roof-shaped walls (28) between each two end sections (17 and 18, 18 and 19, 20 and 21 or 21 and 22) and - That in the area of the connection ends (flanges 23) of the end sections (17 to 22) at the gable end of the walls each have fastening points (29) for parts of a fuel system, such as injection nozzles and fuel rail.
EP80104692A 1979-08-17 1980-08-09 Inlet manifold system for internal-combustion engines with four to six cylinders in line Expired EP0024606B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792933331 DE2933331A1 (en) 1979-08-17 1979-08-17 INTAKE MANIFOLD FOR 4- TO 6-CYLINDER IN-LINE COMBUSTION MACHINES
DE2933331 1979-08-17

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EP0024606A1 true EP0024606A1 (en) 1981-03-11
EP0024606B1 EP0024606B1 (en) 1982-11-24

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EP80104692A Expired EP0024606B1 (en) 1979-08-17 1980-08-09 Inlet manifold system for internal-combustion engines with four to six cylinders in line

Country Status (4)

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US (1) US4409934A (en)
EP (1) EP0024606B1 (en)
DE (2) DE2933331A1 (en)
WO (1) WO1981000594A1 (en)

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EP0114618A2 (en) * 1983-01-14 1984-08-01 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Cast air admission device for combustion engines, particularly pressure die-cast device
EP0319685A2 (en) * 1987-12-11 1989-06-14 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Intake device for a multicylinder internal-combustion engine
KR101275632B1 (en) * 2011-07-29 2013-06-17 전자부품연구원 Medical apparatus using circuit for protecting system from high voltage

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US4501235A (en) * 1983-04-04 1985-02-26 Ford Motor Company Tuned engine intake manifold
EP0158008B1 (en) * 1984-03-10 1988-03-16 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Air inlet pipe arrangement for a multicylinder internal combustion engine
US4719879A (en) * 1984-10-23 1988-01-19 Honda Giken Kogyo Kabushiki Kaisha Intake manifold
US4819588A (en) * 1986-03-08 1989-04-11 Mazda Motor Corporation Intake apparatus for an engine
US4848280A (en) * 1987-01-09 1989-07-18 Mazda Motor Corporation Intake apparatus for internal combustion engine
GB2256675A (en) * 1991-06-11 1992-12-16 Ford Motor Co Tuned i.c.engine intake system.
JPH0783132A (en) * 1993-09-17 1995-03-28 Hitachi Ltd Intake device for internal combustion engine
US5660154A (en) * 1994-08-09 1997-08-26 Fields; Martin C. Crankangle dedicated sequential induction for multi-cylinder engines
US6089202A (en) * 1997-08-21 2000-07-18 Denso Corporation Air-supply module for internal combustion engine
JP4020058B2 (en) * 2003-10-10 2007-12-12 日産自動車株式会社 Intake device for internal combustion engine
US7462007B2 (en) * 2004-07-14 2008-12-09 Paul Sullivan Reactive biasing fasteners
US7857566B2 (en) 2005-07-14 2010-12-28 Reactive Spring Fasteners, Llc Reactive fasteners

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FR2384120A1 (en) * 1977-03-15 1978-10-13 Bayerische Motoren Werke Ag INLET PIPING DEVICE FOR INTERNAL COMBUSTION ENGINES WITH IN-LINE CYLINDERS

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US2862490A (en) * 1954-10-20 1958-12-02 Gen Motors Corp Engine
FR1132643A (en) * 1955-09-19 1957-03-13 Improvements to intake manifold devices for internal combustion engines
DE1526707A1 (en) * 1964-05-09 1969-10-30 Luigi Massarotti Collector for feeding the mixture into the cylinders of explosion engines with four or more cylinders and with one or more carburetors
FR2384120A1 (en) * 1977-03-15 1978-10-13 Bayerische Motoren Werke Ag INLET PIPING DEVICE FOR INTERNAL COMBUSTION ENGINES WITH IN-LINE CYLINDERS

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0114618A2 (en) * 1983-01-14 1984-08-01 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Cast air admission device for combustion engines, particularly pressure die-cast device
EP0114618A3 (en) * 1983-01-14 1985-05-22 Bayerische Motoren Werke Aktiengesellschaft Cast air admission device for combustion engines, particularly pressure die-cast device
EP0319685A2 (en) * 1987-12-11 1989-06-14 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Intake device for a multicylinder internal-combustion engine
EP0319685A3 (en) * 1987-12-11 1990-03-28 Dr.Ing.H.C. F. Porsche Aktiengesellschaft Intake device for a multicylinder internal-combustion engine
KR101275632B1 (en) * 2011-07-29 2013-06-17 전자부품연구원 Medical apparatus using circuit for protecting system from high voltage

Also Published As

Publication number Publication date
DE2933331A1 (en) 1981-02-26
US4409934A (en) 1983-10-18
EP0024606B1 (en) 1982-11-24
DE3061155D1 (en) 1982-12-30
WO1981000594A1 (en) 1981-03-05

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