EP0853721A1 - Systeme d'admission pour un moteur a combustion interne a plusieurs cylindres - Google Patents

Systeme d'admission pour un moteur a combustion interne a plusieurs cylindres

Info

Publication number
EP0853721A1
EP0853721A1 EP96927679A EP96927679A EP0853721A1 EP 0853721 A1 EP0853721 A1 EP 0853721A1 EP 96927679 A EP96927679 A EP 96927679A EP 96927679 A EP96927679 A EP 96927679A EP 0853721 A1 EP0853721 A1 EP 0853721A1
Authority
EP
European Patent Office
Prior art keywords
individual elements
intake system
intake
elements
individual
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.)
Withdrawn
Application number
EP96927679A
Other languages
German (de)
English (en)
Inventor
Georg Mehne
Lutz Westenberger
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.)
Mann and Hummel GmbH
Original Assignee
Filterwerk Mann and Hummel GmbH
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 Filterwerk Mann and Hummel GmbH filed Critical Filterwerk Mann and Hummel GmbH
Publication of EP0853721A1 publication Critical patent/EP0853721A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
    • F02B27/02—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means
    • F02B27/0226—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means characterised by the means generating the charging effect
    • F02B27/0268—Valves
    • F02B27/0284—Rotary slide valves
    • 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
    • F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
    • F02B27/02—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means
    • F02B27/0205—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means characterised by the charging effect
    • F02B27/0215—Oscillating pipe charging, i.e. variable intake pipe length charging
    • 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
    • F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
    • F02B27/02—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means
    • F02B27/0226—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means characterised by the means generating the charging effect
    • F02B27/0247—Plenum chambers; Resonance chambers or resonance pipes
    • F02B27/0263—Plenum chambers; Resonance chambers or resonance pipes the plenum chamber and at least one of the intake ducts having a common wall, and the intake ducts wrap partially around the plenum chamber, i.e. snail-type
    • 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
    • F02D9/12—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having slidably-mounted valve members; having valve members movable longitudinally of conduit
    • F02D9/16—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having slidably-mounted valve members; having valve members movable longitudinally of conduit the members being rotatable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/08—Thermoplastics
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the invention relates to an intake system for a multi-cylinder internal combustion engine according to the preamble "of claim 1
  • an intake system for an internal combustion engine is known. This consists of several intake manifolds twisted by more than 180 ° and means for controlled changing of the intake manifold length.It also has at least one movable throttle element, the means for changing the Saugrohrlange and the throttle member for air quantity control are structurally combined in a cylindrical rotary roller slide valve This rotary valve is limitedly displaceable in the direction of the cylinder axis and a cylinder axis rotatably
  • Such induction systems are to a greater extent made of plastic ", in particular of thermoplastic material" manufactured This material has considerable advantages posted for weight reduction and manufacturing costs
  • the invention is therefore based on the object of providing an intake system for a multi-cylinder internal combustion engine which has an element for changing the length of the intake manifold or for connecting additional intake manifolds, which ensures low leakage air rates and requires little assembly effort
  • this cylinder-shaped rotatable element is not a rigid structure, but consists of individual, adjacent elements or individual elements that adapt to the inner contour of the bore in the intake system.
  • the individual elements are movable relative to each other, namely in such a way that slight radial displacements or curvatures can be compensated for.
  • the individual elements are coupled to one another in such a way that the actuating movement can be transmitted
  • connection of the individual elements to one another can be carried out with a ball head catch or alternatively with a claw coupling.
  • the initiation of the actuating movement on the elements at one end of the cylindrical element can also be accomplished with a claw coupling.
  • the individual elements can additionally be equipped with sealing lips or other sealing elements. This also contributes to a further reduction of the leakage air or false air
  • an advantageous manufacturing process for an intake system is the so-called melt core technology.
  • the intake system can also be manufactured using half-shell technology or other injection molding processes.
  • the individual elements of the rotary valve or the rotatable element are injection molded plastic parts
  • the intake system can be assembled in the manner of a modular system, depending on the number of cylinders in the engine.
  • the shift drum can be adapted to the number of cylinders in the internal combustion engine
  • connecting elements in the form of pluggable intermediate parts can also be provided between the individual elements. These connecting elements can be snapped, latched or secured in some other way with the individual elements.
  • the connecting elements have the advantage that there is no wear effect because there is no friction between two parts.
  • the connecting elements are firmly coupled to the individual elements and due to their geometry, compensate for the radial displacements or curvatures
  • the individual elements in two-component injection molding technology. This means that in a first process step, the individual elements are first produced in a plastic injection mold, then in a second process step cavities are created within the injection mold, which cavities are created by a second Component to be filled and which are suitable as an elastic link between the individual elements.
  • This method has the advantage that the complete component is produced in a single manufacturing process and therefore the assembly effort is significantly reduced
  • the connecting elements or the connecting member are on the one hand flexible to compensate for tolerances, and on the other hand torsionally rigid in order to pass on the initiated rotary movement without angular misalignment
  • Figure 1 shows a cross section through an intake system
  • Figure 2 shows a section through a switching shaft arranged in the intake system
  • Figure 3 shows a section of a switching shaft with connecting element
  • Figure 4 shows a variant of a connecting element
  • the intake system shown in Figure 1 is intended for an internal combustion engine in a V-shaped design for arrangement between the rows of cylinders.It consists of a one-piece plastic component 10, which is made, for example, in the meltdown technique.
  • This plastic component 10 contains a central tubular intake manifold 11, which is contained by a Opening 12 in an outer wall of the plastic component 10 with a not shown Throttle valve part is connected From the intake manifold 11 alternate first individual intake pipes 13 for the cylinders of the right row of cylinders and further individual intake pipes 14 (shown in broken lines) for the cylinders of the second row of cylinders arranged on the left.
  • the first individual intake pipes 13 are arranged next to one another and extend as if from 1, around the intake manifold 11, the first intake pipes 13 in FIG. 1 running clockwise and the first individual intake pipes 14 counterclockwise.
  • the entry openings of the first individual intake pipes are in area 15, the entry openings of the second individual intake pipes are in area 16 arranged
  • the individual intake pipes each end in a flange 17, 18, which is attached to the cylinder head of the respective cylinder bank. With a suitable screw connection, the intake system is connected to the engine via the respective flange, radially within each first individual intake Pipe 13 is a short second single suction pipe 19, which is also supplied by the intake manifold 1 1.
  • the inlet opening 20 connects this single suction pipe to the intake manifold 1 1.
  • the second individual suction pipes 21 run parallel to the associated first individual suction pipes and in the same direction as these and have a common wall 22
  • a switching drum 23 is provided to shut off or open the short individual suction pipes 19, 21, .
  • This is arranged inside the plastic component in a longitudinal bore 24 that cuts the second individual suction pipes 19, 21.
  • the second individual suction pipes 19, 21 are in addition to the first individual suction pipes 13 , 14 open
  • This position produces a higher torque when the engine is under full load below a certain limit speed.
  • the limit speed is, for example, 4,300 revolutions.
  • the shift drum 23 is rotated into the respective position by an actuator, not shown here
  • FIG. 2 shows the shift drum in a cross-sectional view.
  • the plastic component 10 of the intake system is only shown in part here.
  • the shift drum 23 is inserted into an elongated bore 24 of the plastic component.
  • the shift drum 23 consists of individual elements 45, 46, 47, 48 , 50, 51 equipped and locked together on element 45 there is a coupling element 36 for initiating the rotary movement
  • the contour of the bore 24 is shown arched in this figure and is greatly oversubscribed. It can be seen from this that even with such an extreme contour course, an adaptation of the individual elements is possible without any problems. 53, 54 equipped Of course there is also the possibility of providing a different type of coupling of the individual elements. It is essential that the type of coupling is a Allows adaptation to the contour of the bore and also transmits rotary movements without play. This can be achieved, for example, by a simple claw coupling
  • the individual elements 45 to 48 are also provided with grooves 55, 56, 57, 58. These serve to accommodate sealing rings 59-62, as are also known, for example, in the case of pistons (piston rings)
  • FIG. 3 shows a section of a selector shaft with a selector drum 23 and the individual elements 45, 46.
  • a connecting element 63 is inserted between these two elements.
  • This connecting element is shown as an individual part in FIG. 3d and essentially consists of two ring-shaped individual elements that are connected via webs 65, 66 and a central axis 67 are connected to one another. This construction enables good elasticity with regard to the adaptation to a contour profile such as shown in FIG. 2
  • Figure 3b shows a sectional view of the connecting element 63, which is buttoned in a recess 68 of the element 46 or the element 45.
  • the connection is made via a radial snap connection
  • FIG. 4 shows a variant in which the connecting element 63 is connected to the individual elements 46 and 45 via an axial snap connection 69, 70.
  • the connecting element 63 in a two-component injection molding technique with the two elements 46 and 45 to connect
  • the essential property of the connecting element 63 lies in the high torsional rigidity and a good bending elasticity
  • the grooves 71, 72 shown in FIG. 4 and also in FIG. 3 serve to accommodate sealing rings, as are already shown in FIG. 2

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Characterised By The Charging Evacuation (AREA)

Abstract

La présente invention concerne un moteur à combustion interne à plusieurs cylindres, moteur équipé d'un collecteur d'admission ainsi que de plusieurs tuyaux d'admission. Le système d'admission comporte un élément permettant de modifier la longueur des tuyaux d'admission ou de raccorder des tuyaux d'admission supplémentaires. Cet élément, qui tourne et, est de forme générale cylindrique et est constitué de composants individuels (45-48) disposés côte à côte et qui sont mobiles les uns par rapport aux autres.
EP96927679A 1995-10-04 1996-08-05 Systeme d'admission pour un moteur a combustion interne a plusieurs cylindres Withdrawn EP0853721A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19536947A DE19536947A1 (de) 1995-10-04 1995-10-04 Ansauganlage für eine Mehrzylinderbrennkraftmaschine
DE19536947 1995-10-04
PCT/EP1996/003443 WO1997013060A1 (fr) 1995-10-04 1996-08-05 Systeme d'admission pour un moteur a combustion interne a plusieurs cylindres

Publications (1)

Publication Number Publication Date
EP0853721A1 true EP0853721A1 (fr) 1998-07-22

Family

ID=7773998

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96927679A Withdrawn EP0853721A1 (fr) 1995-10-04 1996-08-05 Systeme d'admission pour un moteur a combustion interne a plusieurs cylindres

Country Status (4)

Country Link
EP (1) EP0853721A1 (fr)
DE (1) DE19536947A1 (fr)
WO (1) WO1997013060A1 (fr)
ZA (1) ZA968257B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19709882B4 (de) * 1997-03-11 2013-08-29 Mann + Hummel Gmbh Schaltwalze
DE19712680A1 (de) * 1997-03-26 1998-10-01 Mann & Hummel Filter Schaltwalze, insbesondere zur Verwendung in einer Saugrohranlage für eine Mehrzylinder-Brennkraftmaschine
CN100458115C (zh) * 2005-12-29 2009-02-04 比亚迪股份有限公司 可变进气管以及包括该可变进气管的进气系统
DE102010045215A1 (de) 2010-09-13 2012-03-15 Audi Ag Schaltwelle sowie Verfahren zur Herstellung einer Schaltwelle

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3807193A1 (de) * 1988-03-04 1989-06-01 Bayerische Motoren Werke Ag Ansaugvorrichtung fuer eine brennkraftmaschine
JP2718482B2 (ja) * 1989-02-06 1998-02-25 ヤマハ発動機株式会社 ２サイクル多気筒エンジンの弁駆動機構
FR2642795B1 (fr) * 1989-02-09 1991-05-17 Peugeot Dispositif d'admission pour moteur a combustion interne
EP0480393B1 (fr) * 1990-10-11 1995-12-27 Wolfram Willeke Moteur à combustion avec une vanne cylindrique
DE4041200C2 (de) * 1990-12-21 1993-11-04 Porsche Ag Luftansauganlage fuer eine brennkraftmaschine
KR100257949B1 (ko) * 1991-07-02 2000-06-01 톰 바스코비치 2 행정 멀티-실린더 내연기관
DE4344504A1 (de) * 1993-12-24 1995-06-29 Audi Ag Saugrohranlage für eine Mehrzylinder-Brennkraftmaschine
DE4423427C2 (de) * 1994-07-05 2000-10-05 Mann & Hummel Filter Ansauganlage für eine Mehrzylinder-Brennkraftmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9713060A1 *

Also Published As

Publication number Publication date
DE19536947A1 (de) 1997-04-10
WO1997013060A1 (fr) 1997-04-10
ZA968257B (en) 1997-05-02

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