EP0024606B1 - 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

Info

Publication number
EP0024606B1
EP0024606B1 EP80104692A EP80104692A EP0024606B1 EP 0024606 B1 EP0024606 B1 EP 0024606B1 EP 80104692 A EP80104692 A EP 80104692A EP 80104692 A EP80104692 A EP 80104692A EP 0024606 B1 EP0024606 B1 EP 0024606B1
Authority
EP
European Patent Office
Prior art keywords
end portions
portions
bends
individual
intake pipes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP80104692A
Other languages
German (de)
French (fr)
Other versions
EP0024606A1 (en
Inventor
Wolfgang Kaindl
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0024606A1 publication Critical patent/EP0024606A1/en
Application granted granted Critical
Publication of EP0024606B1 publication Critical patent/EP0024606B1/en
Expired legal-status Critical Current

Links

Images

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 requirements and without a tight mutual spatial overlap of the individual intake manifolds, which at the same time has sufficiently large radii of curvature.
  • An intake manifold 1 for a 6-cylinder injection engine, not shown, as an Otto engine consists essentially 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 Single suction pipes 3 to 8 of equal length start from the distribution chamber 2 in a plane 10 parallel and in pairs opposite to each other in two groups 3 to 5 and 6 to 8.
  • 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 to 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 is arranged approximately in the center transverse to the row of 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 approximately at right angles to the plane 10 of the initial sections 9, in which the first elbows 25 are also essentially arranged .
  • 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.
  • roof-shaped walls 28 are arranged 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. These also form a stiffener, a part separation between two mold parts and in the area of the An closing or the flanges 23 of the closing sections 17 to 22 at their gable ends each have a fastening point 29 with a female thread for parts of a fuel system, not shown, such as injection nozzles and fuel rail, for which there are favorable space conditions within the U-shaped further elbow.
  • 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 fan-shaped parts of the other elbows 26 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 distance between the connections to the outer inlet ducts of a machine, while the transverse extension decreases in the direction Q towards the longitudinal ends, which is advantageous Conditions for the space requirements of other additional units in the area of both machine end areas.
  • this design of the individual suction pipes makes it possible to achieve a particularly large length of the same with a particularly favorable space requirement.

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-A 1526707, DE-A 2711 195 und US-PA 2862490) sind stets die an die Anfangsabschnitte anschließenden gekrümmten Zwischenabschnitte aus der Ebene der Anfangsabchnitte heraus in Richtung zur Ebene der Schlußabschnitte hin gekrümmt, wodurch das dabei vorgesehene 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 suction pipe systems of this and similar types (DE-A 1526707, DE-A 2711 195 and US-PA 2862490), the curved intermediate sections adjoining the initial sections are always curved out of the plane of the initial sections in the direction of the plane of the final sections, as a result of which the narrow mutual spatial overlap of the individual intake pipes that is provided is favored. 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 enges 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 requirements and without a tight mutual spatial overlap of the individual intake manifolds, which at the same time has 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 Schlussabschnitte der in der Reihe außenliegenden Einzelsaugrohre die Längsausdehnung der Saugrohranlage bestimmen können, während diese außenliegenden Einzelsaugrohre mit ihren gekrümmten Zwischenabschnitten eine geringere Quererstreckung 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. In this way, 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 end sections of the individual intake manifolds located in the row can determine the longitudinal extent of the intake manifold system, while these external single intake manifolds with their curved intermediate sections have a smaller transverse extent than the individual intake manifolds for the connecting ends in between in the row. 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-A 1526707 und US-A 2862490 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-A 1526707 and US-A 2862490, 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 unfavorable for machine tuning.

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

  • Figur 1 die Ansicht einer Saugrohranlage für eine 6-Zylinder-Reihen-Brennkraftmaschine von der Seite betrachtet,
  • Figur 2 die Draufsicht der Saugrohranlage nach Fig. 1,
  • Figur 3 die Ansicht der Saugrohranlage nach Fig. 1 und 2 von vorne,
  • Figur 4 den Schnitt nach der Linie IV-IV in Fig.1 und
  • Figur 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 side view of an intake manifold system for a 6-cylinder in-line internal combustion engine,
  • FIG. 2 shows the top view of the intake manifold system according to FIG. 1,
  • 3 shows the view of the intake manifold according to FIGS. 1 and 2 from the front,
  • Figure 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 Otto-Motor 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 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 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 einem Muttergewinde für Teile einer 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 Wänden verschlossen. Dadurch werden schwierig beherrschbare Übergänge sowie Putzstellen zwischen den Übergängen der einzelnen Gußformteile vermieden.An intake manifold 1 for a 6-cylinder injection engine, not shown, as an Otto engine consists essentially 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 Single suction pipes 3 to 8 of equal length start from the distribution chamber 2 in a plane 10 parallel and in pairs opposite to each other in two groups 3 to 5 and 6 to 8. 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 to 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 is arranged approximately in the center transverse to the row of 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 approximately at right angles to the plane 10 of the initial sections 9, in which the first elbows 25 are also essentially arranged . 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, approximately roof-shaped walls 28 are arranged 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. These also form a stiffener, a part separation between two mold parts and in the area of the An closing or the flanges 23 of the closing sections 17 to 22 at their gable ends each have a fastening point 29 with a female thread for parts of a fuel system, not shown, such as injection nozzles and fuel rail, for which there are favorable space conditions within the U-shaped further elbow. 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 fan-shaped parts of the other elbows 26 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 Quererstreckung in Richtung Q 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 Einzelsaugrohre 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 distance between the connections to the outer inlet ducts of a machine, while the transverse extension decreases in the direction Q towards the longitudinal ends, which is advantageous Conditions for the space requirements of other additional units in the area of both machine end areas. Overall, this design of the individual suction pipes makes it possible to achieve a particularly large length of the same with a particularly favorable space requirement.

Claims (4)

1. An intake pipe manifold for a 4- to 6-cylinder in-line internal combustion engine,
-with a distributor chamber (2) and
- individual intake pipes (3, 4, 5; 6, 7, 8) of approximately the same length and forming two groups arranged substantially symmetrically in relation to each other, and
-which extend from the distributor chamber (2) by initial portions (9) and opposite to each other in pairs and in roughly the same plane, and
- which have intermediate portions which are curved throughout, as well as end portions (17 to 22) with connection ends for inlet ducts of the engine, which end portions extend in the same direction and are parallel with each other,
-the end portions (17 to 22) extending substantially at right angles to the initial portions (9) and approximately in a plane which is roughly parallel with that of the initial portions, characterised in
- that starting from the initial portions (9), the intermediate portions (11 to 16) of all the individual intake pipes (3, 4, 5, 6, 7 and 8) change to directions, substantially opposite to the end portions (17 to 22), by way of first bends (25) arranged within their common plane (10), and
-that further bends (26) are connected thereto,
-which form a substantially U-shaped connection with the end portions (17 to 22).
2. An intake pipe manifold according to claim 1, characterised in
- that the outer further bends (26) are formed as planar 180° bends, and
-the inner further bends (26) are formed in each case as two interconnecting 90° bends,
-which, at their point of connection, are turned relatively to each other and/or have a flat bend transversely of their respective planes.
3. An intake pipe manifold according to claim 1, characterised in
-that the intermediate portions (11 to 16) of each group (3 to 5; 6 to 8) of individual intake pipes (3 to 8) are close to each other at the change-over points between the first bends (25) and the further bends (26), and
-that the further bends (26) of each group (3 to 5; 6 to 8) of individual intake pipes (3 to 8) then spread out fanwise towards their spaced end portions (17 to 22).
4. An intake pipe manifold according to claim 1, characterised in
-that walls (28), roughly in the shape of an inverted letter V, extend in the longitudinal direction of the end portions (17 to 22) between each two end portions (17 and 22) between each two end portions (17 and 18, 18 and 19,20 and 21 and 21 and 22) respectively, and
-that, in the zone of the connection ends (flanges 23) of the end portions (17 to 22), attachment points (29) for parts of a fuel unit, such as injection nozzles and a fuel-distributor pipe, are arranged at the gable end of the walls in each case.
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

Publications (2)

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

Family

ID=6078666

Family Applications (1)

Application Number Title Priority Date Filing Date
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)

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

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3463288D1 (en) * 1983-01-14 1987-05-27 Bayerische Motoren Werke Ag Cast air admission device for combustion engines, particularly pressure die-cast device
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
DE3742057C1 (en) * 1987-12-11 1988-09-22 Porsche Ag Intake system for a multi-cylinder 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
KR101275632B1 (en) * 2011-07-29 2013-06-17 전자부품연구원 Medical apparatus using circuit for protecting system from high voltage

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4175504A (en) * 1975-01-15 1979-11-27 Bayerische Motoren Werke Ag Air induction system for an internal combustion engine
FR2384120A1 (en) * 1977-03-15 1978-10-13 Bayerische Motoren Werke Ag INLET PIPING DEVICE FOR INTERNAL COMBUSTION ENGINES WITH IN-LINE CYLINDERS

Also Published As

Publication number Publication date
DE2933331A1 (en) 1981-02-26
DE3061155D1 (en) 1982-12-30
WO1981000594A1 (en) 1981-03-05
EP0024606A1 (en) 1981-03-11
US4409934A (en) 1983-10-18

Similar Documents

Publication Publication Date Title
EP0024606B1 (en) Inlet manifold system for internal-combustion engines with four to six cylinders in line
EP0080603B1 (en) Fuel injection apparatus for internal-combustion engines
EP0158008B1 (en) Air inlet pipe arrangement for a multicylinder internal combustion engine
DE3200603C2 (en) Intake device for an internal combustion engine with a register carburetor
DE3433011C2 (en)
EP0444423A1 (en) Plastic header box for heat exchanger
DE2527774A1 (en) Inlet manifold for IC engines - is two part die casting joined at dividing plane
DE2625788B1 (en) EXHAUST PIPE FOR TURBOCHARGED COMBUSTION MACHINES
DE2711195C3 (en) Intake manifold for 4- to 6-cylinder in-line internal combustion engines
DE3820674A1 (en) Air intake system for a multi-cylinder internal combustion engine
DE2930697C2 (en)
EP0373639B1 (en) Exhaust gas conduit system for a supercharged combustion engine
DE102004030555B4 (en) Intake passage of a lean burn engine and core for making same
DE3537744A1 (en) INTAKE DISTRIBUTION PIPE
DE2736466C3 (en) Intake manifold for internal combustion engines
DE2750586C2 (en) Intake manifold for in-line internal combustion engines
EP0113441B1 (en) Air inlet arrangement for internal-combustion engines, particularly fuel injection combustion engines
DE1933271A1 (en) Intake manifold for internal combustion engines
EP0114618B1 (en) Cast air admission device for combustion engines, particularly pressure die-cast device
DE2753751C2 (en) Intake manifold for in-line internal combustion engines
DE3240196A1 (en) Cast air-intake system for internal combustion engines
DE2759571C2 (en) Cast core for manufacturing an intake manifold for internal combustion engines.
DE19801204B4 (en) Intake system for a combustion air supply of an internal combustion engine
DE19857607B4 (en) Internal combustion engine with two V-shaped cylinder banks
DE2403090A1 (en) Air intake manifold for IC engines - is die cast in two sections, which join trough shaped manifold half

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

AK Designated contracting states

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19810404

ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): DE FR GB IT

REF Corresponds to:

Ref document number: 3061155

Country of ref document: DE

Date of ref document: 19821230

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

Ref country code: DE

Payment date: 19900727

Year of fee payment: 11

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

Ref country code: GB

Payment date: 19900807

Year of fee payment: 11

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

Ref country code: FR

Payment date: 19900828

Year of fee payment: 11

ITTA It: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19910809

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19920430

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

Ref country code: DE

Effective date: 19920501

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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