DE4030528A1 - Inlet manifold for piston engine - has two inlet valves per cylinder with two inlet ducts per valve to provide max. supercharging - Google Patents
Inlet manifold for piston engine - has two inlet valves per cylinder with two inlet ducts per valve to provide max. superchargingInfo
- Publication number
- DE4030528A1 DE4030528A1 DE4030528A DE4030528A DE4030528A1 DE 4030528 A1 DE4030528 A1 DE 4030528A1 DE 4030528 A DE4030528 A DE 4030528A DE 4030528 A DE4030528 A DE 4030528A DE 4030528 A1 DE4030528 A1 DE 4030528A1
- Authority
- DE
- Germany
- Prior art keywords
- suction
- air intake
- intake system
- cylinders
- suction 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.)
- Withdrawn
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
- F02B27/0247—Plenum chambers; Resonance chambers or resonance pipes
- F02B27/0252—Multiple plenum chambers or plenum chambers having inner separation walls, e.g. comprising valves for the same group of cylinders
-
- 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
- F02B27/0221—Resonance charging combined with oscillating pipe 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
- F02B27/0268—Valves
- F02B27/0273—Flap 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
- F02B27/0294—Actuators or controllers therefor; Diagnosis; Calibration
-
- 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
- F02B2075/1832—Number of cylinders eight
-
- 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
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- 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
- F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Characterised By The Charging Evacuation (AREA)
Abstract
Description
Die Erfindung betrifft eine Luftansauganlage eines Hubkolbenmotors nach dem Oberbegriff des Anspruchs 1.The invention relates to an air intake system of a reciprocating engine according to the Preamble of claim 1.
Eine derartige Luftansauganlage für einen Hubkolbenmotor ist aus DE-A 28 15 701 bekannt. Dieser Motor besitzt zwei Einlaßventile pro Zylinder. Um die Gemischaufbereitung und die Wirtschaftlichkeit des Motors zu verbessern, führen zu jedem Einlaßventil zwei Ansaugkanäle, ein Teillastkanal und eine Vollastkanal. Die Ansaugkanäle vereinigen sich erst unmittelbar vor dem Einlaßventil; beide sind durch Drehklappen verschließbar. Im Teillastbereich ist der im Querschnitt größere Vollastkanal verschlossen, der Teillastkanal ist offen. An der kleinen Innenoberfläche des Teillastkanales erwärmt sich die Ansaugluft bzw. das Gemisch rasch und es gelangt gut aufbereitet in den Zylinder. Im Vollastbereich sind beide Ansaugkanäle offen. Die Hauptmenge der Ansaugluft bzw. des Gemisches gelangt ohne besondere Vorwärmung in den Zylinder.Such an air intake system for a reciprocating piston engine is off DE-A 28 15 701 known. This engine has two intake valves per Cylinder. The mixture preparation and the economy of the engine To improve, two intake ducts lead to each intake valve Partial load channel and a full load channel. The intake channels merge first immediately before the inlet valve; both are by rotary flaps lockable. The cross section is larger in the partial load range Full load channel closed, the partial load channel is open. On the little one The inner surface of the partial load duct heats up the intake air or the Mix quickly and it gets into the cylinder well prepared. in the Both intake ducts are open at full load. The main amount of intake air or the mixture gets into the cylinder without special preheating.
Es ist die Aufgabe der Erfindung eine derartige Luftansauganlage so auszugestalten, daß das vom Motor abgegebene Drehmoment in einem weiten Drehzahlbereich des Motors erhöht wird.It is the object of the invention such an air intake system to design that the torque delivered by the engine in a wide Engine speed range is increased.
Zur Lösung dieser Aufgabe dienen die kennzeichnenden Merkmale des Anspruchs 1. Die Erfindung geht aus von der bekannten Tatsache, daß sich bei einer bestimmten Länge und einem bestimmten Durchflußquerschnitt eines zu dem Einlaßventil führenden Saugrohres durch Schwingaufladung ein optimales Drehmoment ergibt. Diese Schwingaufladung hat ihre Maximalgröße bei einer bestimmten Motordrehzahl, wirkt sich aber auch bei Drehzahlen oberhalb und unterhalb dieser Motordrehzahl noch drehmomenterhöhend aus. Wenn gemäß der Erfindung jedem Einlaßventil eine längere und eine kürzere Saugleitung zugeordnet sind und beide Saugleitungen durch Drosselorgane absperrbar sind, kann man durch drehzahlabhängiges Betätigen der Drosselorgane eine der Motordrehzahl angepaßte Saugleitung an das Einlaßventil schalten.The characteristic features of the claim serve to solve this problem 1. The invention is based on the known fact that a certain length and a certain flow cross section from one to the Intake valve leading intake manifold an optimal by vibrating charging Torque results. This vibrating charge has its maximum size at one certain engine speed, but also affects speeds above and below this engine speed still increasing torque. If according to the Invention each intake valve a longer and a shorter suction line are assigned and both suction lines can be blocked by throttling devices, can one of the speed-dependent actuation of the throttle bodies Connect the adjusted intake line to the intake valve.
In vorteilhafter Ausgestaltung der Erfindung nach Anspruch 3 sind die unterschiedlich langen Saugleitungen als Teilabschnitte an zwei gleich langen zum Einlaßventil führenden Saugrohren ausgebildet. Die Teilabschnitte entstehen dadurch, daß die Saugrohre auf Abstand zueinander zwei oder mehrere durch Absperrorgane verschließbare Einströmöffnungen besitzen, durch die hindurch aus einem Sammelbehälter angesaugt wird; der Abstand der Einströmöffnungen zum Einlaßventil ist gleichbedeutend mit der Länge der Saugleitung.In an advantageous embodiment of the invention according to claim 3 are suction lines of different lengths as sections on two of the same long suction pipes leading to the inlet valve. The sections arise from the fact that the suction pipes are spaced two or have several inflow openings that can be closed by shut-off devices which is sucked through from a collecting container; the distance of the Inlet openings to the inlet valve is synonymous with the length of the Suction line.
Um eine möglichst kurze Saugleitung realisieren zu können, ist die dem Einlaßventil am nächsten gelegene Einströmöffnung durch einen Flachschieber steuerbar. Bei einem V-Motor können mit einem solchen Flachschieber die Saugrohre beider Zylinderreihen gemeinsam geöffnet bzw. geschlossen werden.In order to be able to implement the shortest possible suction line, this is the Inlet valve closest to inlet through a flat slide valve controllable. With a V-engine such a flat slide valve can be used Intake pipes of both cylinder rows are opened or closed together.
Zwei Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden nachfolgend erläutert. Es zeigen:Two embodiments of the invention are shown in the drawing and are explained below. Show it:
Fig. 1 Luftansauganlage an einem 8-Zylinder-V-Motor, Fig. 1 air-intake system of an 8-cylinder V-engine,
Fig. 2 Draufsicht zu Fig. 1, Fig. 2 plan view of Fig. 1,
Fig. 3 abgewandelte Luftansauganlage, Fig. 3 modified air induction system,
Fig. 4 Draufsicht zu Fig. 3, Fig. 4 top view of FIG. 3,
Fig. 5 Drehmoment-Drehzahl-Diagramm. Fig. 5 torque-speed diagram.
An einem 8-Zylinder-V-Motor ist eine Luftansauganlage mittig zwischen der rechten Zylinderreihe 1 und der linken Zylinderreihe 2 angebaut. Sie ist symmetrisch zu der durch die V-Mitte gehenden Hochachse 3 des Motors gestaltet. Jeder Zylinder besitzt zwei Einlaßventile 4 und 5 und zwei Auslaßventile, die der Übersichtlichkeit halber nicht gezeichnet wurden. Das eine Einlaßventil 4 der rechten Zylinderreihe 1 ist über ein kurzes, S-förmiges Saugrohr 6, das andere Einlaßventil 5 über ein längeres Saugrohr 7 an einem Sammelbehälter 8 angeschlossen. Die zur rechten Zylinderreihe 1 führenden Saugrohre 6, 7 sind mit dem linken Bereich 9 des Sammelbehälter 8, die zur linken Zylinderreihe 2 führenden Saugrohre 10, 11 mit dem rechten Bereich 12 des Sammelbehälters 8 verbunden. Die Saugrohre 6, 10 und 7, 11 sind jeweils gegenläufig zueinander, symmetrisch zur Hochachse 3 gebogen. Die kurzen Saugrohre 6, 10 sind an ihren Einmündungsstellen zu den Einlaßventilen 4 durch Drehklappen 13 verschließbar. Sind die Drehklappen 13 geöffnet, so wird gleichzeitig über die kurzen 6, 10 und langen Saugrohre 7, 11 angesaugt.On an 8-cylinder V-engine, an air intake system is attached in the middle between the right row of cylinders 1 and the left row of cylinders 2 . It is designed symmetrically to the vertical axis 3 of the engine passing through the V center. Each cylinder has two intake valves 4 and 5 and two exhaust valves, which have not been drawn for the sake of clarity. One inlet valve 4 of the right row of cylinders 1 is connected to a collecting container 8 via a short, S-shaped intake manifold 6 , the other intake valve 5 via a longer intake manifold 7 . The suction pipes 6 , 7 leading to the right row of cylinders 1 are connected to the left area 9 of the collecting container 8 , and the suction pipes 10 , 11 leading to the left row of cylinders 2 are connected to the right area 12 of the collecting container 8 . The suction pipes 6 , 10 and 7 , 11 are each opposite to each other, bent symmetrically to the vertical axis 3 . The short suction pipes 6 , 10 can be closed at their confluence points with the inlet valves 4 by means of rotary flaps 13 . If the rotary flaps 13 are open, suction is simultaneously carried out via the short 6 , 10 and long suction pipes 7 , 11 .
Zusätzlich läßt sich mit einem mittig zur Hochachse 3 angeordneten Flachschieber 14 die Länge des Ansaugweges aller an die beiden Zylinderreihen 1, 2 angebauten Saugrohre 6, 7; 10, 11 verändern. In diesem mittigen Teil sind die Saugrohre in einem gemeinsamen Grundkörper 15 zusammengeführt, der Durchbrüche 16 und 17 aufweist. Die kleineren Durchbrüche 16 sind den kurzen Saugrohren 6 und 10 die größeren Durchbrüche 17 den langen Saugrohren 7 und 11 zugeordnet. Der Flachschieber 14 ist mit gleichartig gestalteten und angeordneten Durchbrüchen 16, 17 versehen. Werden durch Längsverschieben des Flachschiebers seine Durchbrüche 16, 17 mit den Durchbrüchen des Grundkörpers 15 zur Deckung gebracht - diese Lage ist in Fig. 2 gezeichnet -, so kann über sie Luft aus dem mittleren Bereich 18 des Sammelbehälter 8 mit kürzestem Ansaugweg zu den Einlaßventilen 4, 5 strömen. Zum Betätigen des Flachschiebers 14 dient eine Zugstange 19, die durch eine mit Ansaugluft beaufschlagte, durch einen Drehzahlsensor gesteuerte Druckdose 20 längs der Zylinderreihen 1, 2 verschiebbar ist. Mit einer weiteren Druckdose 20 lassen sich über einen Lineartrieb 21, der aus Zugstangen, Zahnstangen, Zahnrädern und Wellen zusammengesetzt ist, alle Drehklappen 13 der Saugrohre 6, 10 gemeinsam betätigen.In addition, the length of the suction passage may be with a centrally arranged to the vertical axis 3 flat slider 14 of all of the two rows of cylinders 1, 2 mounted suction pipes 6, 7; 10 , 11 change. In this central part, the suction pipes are brought together in a common base body 15 which has openings 16 and 17 . The smaller openings 16 are assigned to the short suction pipes 6 and 10, the larger openings 17 to the long suction pipes 7 and 11 . The flat slide valve 14 is provided with openings 16 , 17 of similar design and arrangement. Are longitudinal displacement of the flat slide his openings 16, 17 engaged with the openings of the base body 15 to cover - this situation is drawn in Fig. 2 -, so the tank 8 can they air from the central region 18 having the shortest intake path to the inlet valves 4 , 5 stream. A pull rod 19 is used to actuate the flat slide 14 and can be displaced along the cylinder rows 1 , 2 by means of a pressure can 20 which is acted upon by intake air and controlled by a speed sensor. With a further pressure cell 20 , all rotary flaps 13 of the suction pipes 6 , 10 can be actuated together via a linear drive 21 , which is composed of tie rods, toothed racks, gear wheels and shafts.
Im unteren Drehzahlbereich des Motors, bis 3700 l/min., sind die kurzen Saugrohre mit einem Durchmesser von 27 mm und einer Länge von 440 mm verschlossen. Es wird über die langen Saugrohre mit 600 mm Länge und 33 mm Durchmesser angesaugt. Nach Öffnen der Drehklappen sind die kurzen Saugrohre zugeschaltet. Werden zusätzlich die Durchbrüche 16, 17 des Grundkörpers 15 durch Betätigen des Flachschiebers 14 bei einer Drehzahl von 5700 l/min geöffnet, so beträgt die Ansauglänge aller Saugrohre 280 mm.In the lower speed range of the engine, up to 3700 l / min., The short intake pipes with a diameter of 27 mm and a length of 440 mm are closed. It is sucked in via the long suction pipes with a length of 600 mm and a diameter of 33 mm. After opening the rotary flaps, the short suction pipes are switched on. If the openings 16 , 17 of the base body 15 are additionally opened by actuating the flat slide valve 14 at a speed of 5700 l / min, the suction length of all suction pipes is 280 mm.
In einer weiteren Ausführungsform der Erfindung nach Fig. 3 und 4 haben die im Durchmesser kleineren Saugrohre 22, 23 die gleiche Länge von 600 mm wie die im Durchmesser größeren Saugrohre 7, 11. Die Saugrohre 22, 23 sind durch Drehklappen 13, die Saugrohre 7, 11 durch Drehklappen 24 verschließbar.In a further embodiment of the invention according to FIGS. 3 and 4, the smaller diameter suction pipes 22 , 23 have the same length of 600 mm as the larger diameter suction pipes 7 , 11 . The suction pipes 22 , 23 can be closed by rotary flaps 13 , the suction pipes 7 , 11 by rotary flaps 24 .
Alle Drehklappen 13 werden durch einen Lineartrieb 25, die Drehklappen 24 durch einen Lineartrieb 26 betätigt.All rotary flaps 13 are actuated by a linear drive 25 , the rotary flaps 24 by a linear drive 26 .
Radiale Einströmöffnungen an den Saugrohren 22, 23 sind mit Drehklappen 27 durch Betätigen eines Lineartriebes 28 steuerbar. Mit einem weiteren Lineartrieb 29 sind die im Durchmesser größeren Drehklappen 30 der langen Saugrohre 7, 11 betätigbar.Radial inflow openings on the suction pipes 22 , 23 can be controlled with rotary flaps 27 by actuating a linear drive 28 . With a further linear drive 29, the larger-diameter rotary flaps 30 of the long suction pipes 7, 11 are actuated.
Wie Fig. 5 zeigt, läßt sich mit einer solchen Luftansauganlage ein Drehmoment Md erzeugen - Kurve a -, das bei Motordrehzahlen von 1000 l/min bis 6000 l/min deutlich höher liegt als das Drehmoment eines herkömmlichen Motors - Kurve b -.As shown in FIG. 5, with such an air intake system, a torque Md can be generated - curve a -, which at engine speeds of 1000 l / min to 6000 l / min is significantly higher than the torque of a conventional engine - curve b -.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4030528A DE4030528A1 (en) | 1990-09-27 | 1990-09-27 | Inlet manifold for piston engine - has two inlet valves per cylinder with two inlet ducts per valve to provide max. supercharging |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4030528A DE4030528A1 (en) | 1990-09-27 | 1990-09-27 | Inlet manifold for piston engine - has two inlet valves per cylinder with two inlet ducts per valve to provide max. supercharging |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4030528A1 true DE4030528A1 (en) | 1992-04-02 |
Family
ID=6415062
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4030528A Withdrawn DE4030528A1 (en) | 1990-09-27 | 1990-09-27 | Inlet manifold for piston engine - has two inlet valves per cylinder with two inlet ducts per valve to provide max. supercharging |
Country Status (1)
Country | Link |
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DE (1) | DE4030528A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4228334A1 (en) * | 1992-08-26 | 1994-03-03 | Audi Ag | Intake manifold system for a multi-cylinder internal combustion engine |
-
1990
- 1990-09-27 DE DE4030528A patent/DE4030528A1/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4228334A1 (en) * | 1992-08-26 | 1994-03-03 | Audi Ag | Intake manifold system for a multi-cylinder internal combustion engine |
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