WO2013064498A1 - Inlet section for an internal combustion engine - Google Patents

Inlet section for an internal combustion engine Download PDF

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Publication number
WO2013064498A1
WO2013064498A1 PCT/EP2012/071487 EP2012071487W WO2013064498A1 WO 2013064498 A1 WO2013064498 A1 WO 2013064498A1 EP 2012071487 W EP2012071487 W EP 2012071487W WO 2013064498 A1 WO2013064498 A1 WO 2013064498A1
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WO
WIPO (PCT)
Prior art keywords
inlet
throttle
throttle body
internal combustion
combustion engine
Prior art date
Application number
PCT/EP2012/071487
Other languages
German (de)
French (fr)
Inventor
Christian Hubmann
Markus Schwarzl
Christian Spanner
Paul Kapus
Original Assignee
Avl List 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 Avl List Gmbh filed Critical Avl List Gmbh
Publication of WO2013064498A1 publication Critical patent/WO2013064498A1/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
    • F02M35/10006—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
    • F02M35/10078—Connections of intake systems to the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1005—Details of the flap
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1035—Details of the valve housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • 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
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10255—Arrangements of valves; Multi-way valves
    • 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
    • F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles
    • F02M35/162—Motorcycles; All-terrain vehicles, e.g. quads, snowmobiles; Small vehicles, e.g. forklifts

Definitions

  • the invention relates to an intake manifold for an internal combustion engine, in particular for a motorcycle, with at least one inlet pipe, which is flow-connected via a throttle body with at least one arranged in a cylinder head of the engine inlet passage, wherein both the inlet channel, and the throttle body facing each other in first and second flange portions of the inlet channel and the throttle body respectively have a circular flow cross-section, wherein in the throttle body, a circular throttle valve is rotatably mounted about an axis of rotation.
  • Inlet ducts of cylinder heads generally have an oval inlet opening in the region of the flange surface, for which reason an adapter must be used to connect a throttle body with a circular cross section in order to be able to convert the change in cross section between the oval and the circular cross section.
  • a disadvantage is that by using the intermediate piece, the distance between the axis of rotation of the throttle valve and the inlet opening in the cylinder is formed relatively large, resulting in a relatively large dead volume in the inlet channel. This has an immediate detrimental effect on the consumption and on the combustion stability of the internal combustion engine.
  • valves for influencing the swirl in the inlet channel see, for example, EP 0 234 478 A2, EP 0 173 014 A2, JP 0 150 425 A.
  • EP 0 234 478 A2 EP 0 173 014 A2
  • JP 0 150 425 A For storage and actuation of the flaps of the cylinder head must be designed accordingly, which with additional effort connected is.
  • the object of the invention is to improve consumption and combustion stability in an internal combustion engine.
  • the throttle flap protrudes partially into the inlet channel in at least one open position, wherein preferably the second flange region of the inlet nozzle directly adjoins the first flange region of the inlet channel and the throttle body is connected directly to the cylinder head.
  • the dead volume between the throttle and the inlet opening into the combustion chamber can be reduced to a minimum, whereby the residual gas content in the partial load range can be significantly reduced, which subsequently leads to a significant improvement in fuel consumption and combustion stability.
  • the throttle flap Due to the circular shape of the flow cross sections in the flange regions of the inlet channel and the throttle body, the throttle flap can protrude into the inlet channel in at least one open position, without its movement being hindered by the walls of the inlet channel.
  • the distance between the axis of rotation of the throttle flap to the flange portion of the cylinder head may be smaller than the radius of the flow cross-section of the throttle body in the second flange.
  • the invention can be used advantageously both in single-cylinder as well as multi-cylinder internal combustion engines, wherein preferably one throttle valve nozzle is connected to one inlet channel per cylinder.
  • the internal combustion engine can have one intake valve per cylinder or even a plurality of intake valves, wherein it is particularly advantageous if per cylinder a common intake port splits into at least two branch passages and each branch passage leads to an intake port opening into the cylinder.
  • FIG. 1 shows an inlet strand according to the invention, in a longitudinal section with the throttle valve closed;
  • FIG. 2 shows the intake line with the throttle open; and Fig. 3 shows the inlet strand in a section along the line III-III in FIG. 1.
  • FIG. 1 and FIG. 2 show an intake branch 1 of an internal combustion engine with an inlet channel 3 arranged in a cylinder head 2, which opens via an inlet opening 4a, 4b into the combustion chamber of a cylinder, not shown, of an internal combustion engine.
  • the inlet channel 3 has a first flange region 3 a, to which a second flange region 6 a of a throttle body 6 facing the first flange region 3 a is directly connected.
  • an inlet pipe 9 connects.
  • Reference numeral 5 denotes a common flange plane.
  • a circular throttle valve 7 is arranged rotatably about a rotation axis 8.
  • Both the inlet channel 3 and the throttle body 6 each have a circular flow cross-section in their flange areas 3a, 6a, as can be seen in FIG. 3, for example.
  • the distance y between the axis of rotation 8 of the throttle valve 7 and the first flange portion 3a, in particular the flange plane 5, is smaller than the radius r of the circular flow cross-section of the throttle body 6 in the second flange portion 6a.
  • the inlet channel 3 and the throttle body 6 have corresponding circular flow cross-sections in facing flange portions 3a, 6a and the throttle body 6 is connected directly to the inlet channel 3, the distance between the axis of rotation 8 of the throttle valve 7 and the inlet openings 4a, 4b in the cylinder and thus the dead volume in the inlet channel 3 are kept very small. This has - because of the lower residual gas content at partial load - directly beneficial to the fuel consumption and combustion stability of the engine. By saving a transition piece between the throttle body 6 and the inlet channel 3, moreover, the number of parts can be reduced.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

The invention relates to an inlet section (1) for an internal combustion engine, in particular for a motorcycle, having at least one inlet pipe (9) which is flow-connected via a throttle-valve housing (6) to at least one inlet duct (3) which is arranged in a cylinder head (2) of the internal combustion engine, wherein both the inlet duct (3) and the throttle-valve housing (6) in each case have a circular flow cross section in first and second flange regions (3a, 6a), facing one another, of the inlet duct (3) and of the throttle-valve housing (6), respectively, wherein a circular throttle valve (7) is mounted in the throttle-valve housing (6) such that it can be rotated about a rotational axis (8). In order to improve the fuel consumption and the combustion stability of the internal combustion engine, it is provided that the throttle valve (7) projects partially into the inlet duct (3) in at least one open position.

Description

Einlassstrang für eine Brennkraftmaschine  Intake manifold for an internal combustion engine
Die Erfindung betrifft einen Einlassstrang für eine Brennkraftmaschine, insbesondere für ein Motorrad, mit zumindest einem Einlassrohr, welches über einen Drosselklappenstutzen mit zumindest einem in einem Zylinderkopf der Brennkraftmaschine angeordneten Einlasskanal strömungsverbunden ist, wobei sowohl der Einlasskanal, als auch der Drosselklappenstutzen in einander zugewandten ersten und zweiten Flanschbereichen des Einlasskanals bzw. des Drosselklappenstutzens jeweils einen kreisrunden Strömungsquerschnitt aufweisen, wobei im Drosselklappenstutzen eine kreisrunde Drosselklappe um eine Drehachse drehbar gelagert ist. The invention relates to an intake manifold for an internal combustion engine, in particular for a motorcycle, with at least one inlet pipe, which is flow-connected via a throttle body with at least one arranged in a cylinder head of the engine inlet passage, wherein both the inlet channel, and the throttle body facing each other in first and second flange portions of the inlet channel and the throttle body respectively have a circular flow cross-section, wherein in the throttle body, a circular throttle valve is rotatably mounted about an axis of rotation.
Einlasskanäle von Zylinderköpfen weisen im allgemeinen eine ovale Eintrittsöffnung im Bereich der Flanschfläche auf, weshalb zum Anschluss eines Drosselklappenstutzens mit kreisrundem Querschnitt ein Zwischenstück verwendet werden muss, um die Querschnittsänderung zwischen dem ovalen und dem kreisrunden Querschnitt umsetzen zu können. Nachteilig ist, dass durch Verwendung des Zwischenstückes der Abstand zwischen der Drehachse der Drosselklappe und der Eintrittsöffnung in den Zylinder relativ groß ausgebildet ist, was zu einem vergleichsweise großen Totvolumen im Einlasskanal führt. Dies wirkt sich unmittelbar nachteilig auf den Verbrauch und auf die Verbrennungsstabilität der Brennkraftmaschine aus. Inlet ducts of cylinder heads generally have an oval inlet opening in the region of the flange surface, for which reason an adapter must be used to connect a throttle body with a circular cross section in order to be able to convert the change in cross section between the oval and the circular cross section. A disadvantage is that by using the intermediate piece, the distance between the axis of rotation of the throttle valve and the inlet opening in the cylinder is formed relatively large, resulting in a relatively large dead volume in the inlet channel. This has an immediate detrimental effect on the consumption and on the combustion stability of the internal combustion engine.
Weiters ist es bekannt, Klappen zur Drallbeeinflussung im Einlasskanal einzuordnen, siehe beispielsweise EP 0 234 478 A2, EP 0 173 014 A2, JP 0 150 425 A. Zur Lagerung und zur Betätigung der Klappen muss der Zylinderkopf entsprechend konzipiert sein, was mit zusätzlichem Aufwand verbunden ist. Furthermore, it is known to classify valves for influencing the swirl in the inlet channel, see, for example, EP 0 234 478 A2, EP 0 173 014 A2, JP 0 150 425 A. For storage and actuation of the flaps of the cylinder head must be designed accordingly, which with additional effort connected is.
Weiters ist es aus der DE 10 2008/013934 AI bekannt, in einem kreisrunden Saugrohr eine ovale Drehklappe anzuordnen. Furthermore, it is known from DE 10 2008/013934 AI to arrange an oval rotary flap in a circular intake manifold.
Aus der DE 10 207/914 AI ist es bekannt, eine rechteckige Drallklappe in einem ovalen Einlassquerschnitt nahe dem Ansaugkanal im Bereich des Einlassflansches anzuordnen. From DE 10 207/914 AI it is known to arrange a rectangular swirl flap in an oval inlet cross section near the intake passage in the region of the inlet flange.
Die DE 10 119 280 AI offenbart einen in einen Luftsammler eingesetzten Einsatz zur Aufnahme einer Klappe. DE 10 119 280 AI discloses an insert used in an air collector for receiving a flap.
Die US 2005/0 247 287 AI offenbart eine Brennkraftmaschine mit einem an einem Zylinderkopf angeschlossenen Drosselklappenstutzen, in welchem zwei Drosselklappen in Kanälen mit kreisrundem Querschnitt drehbar gelagert sind . Eine ähnliche Anordnung ist aus der US 6, 196, 186 Bl geoffenbart. The US 2005/0 247 287 AI discloses an internal combustion engine having a throttle body connected to a cylinder head, in which two Throttle valves are rotatably mounted in channels with a circular cross-section. A similar arrangement is disclosed in US 6, 196, 186 Bl.
Aufgabe der Erfindung ist es, den Verbrauch und die Verbrennungsstabilität bei einer Brennkraftmaschine zu verbessern. The object of the invention is to improve consumption and combustion stability in an internal combustion engine.
Erfindungsgemäß wird dies dadurch erreicht, dass die Drosselklappe in zumindest einer Öffnungsstellung teilweise in den Einlasskanal hineinragt, wobei vorzugsweise der zweite Flanschbereich des Einlassstutzens unmittelbar an den ersten Flanschbereich des Einlasskanals grenzt und der Drosselklappenstutzen direkt mit dem Zylinderkopf verbunden ist. According to the invention, this is achieved in that the throttle flap protrudes partially into the inlet channel in at least one open position, wherein preferably the second flange region of the inlet nozzle directly adjoins the first flange region of the inlet channel and the throttle body is connected directly to the cylinder head.
Dadurch, dass der Drosselklappenstutzen ohne Zwischenstück am Zylinderkopf angeflanscht ist, kann das Totvolumen zwischen der Drosselklappe und der Einlassöffnung in den Brennraum auf ein Minimum reduziert werden, wodurch der Restgasgehalt im Teillastbereich wesentlich verringert werden kann, was in weiterer Folge zu einer deutlichen Verbesserung des Kraftstoffverbrauches und der Verbrennungsstabilität führt. Characterized in that the throttle body is flanged without adapter on the cylinder head, the dead volume between the throttle and the inlet opening into the combustion chamber can be reduced to a minimum, whereby the residual gas content in the partial load range can be significantly reduced, which subsequently leads to a significant improvement in fuel consumption and combustion stability.
Durch die kreisrunde Form der Strömungsquerschnitte in den Flanschbereichen des Einlasskanales und des Drosselklappenstutzens kann die Drosselklappe in zumindest einer Öffnungsstellung in den Einlasskanal hineinragen, ohne dass ihre Bewegung durch die Wände des Einlasskanales behindert werden würde. Der Abstand zwischen der Drehachse der Drosselklappe zum Flanschbereich des Zylinderkopfes kann dabei kleiner als der Radius des Strömungsquerschnittes des Drosselklappenstutzens im zweiten Flanschbereich sein. Due to the circular shape of the flow cross sections in the flange regions of the inlet channel and the throttle body, the throttle flap can protrude into the inlet channel in at least one open position, without its movement being hindered by the walls of the inlet channel. The distance between the axis of rotation of the throttle flap to the flange portion of the cylinder head may be smaller than the radius of the flow cross-section of the throttle body in the second flange.
Die Erfindung lässt sich sowohl bei Ein- als auch bei Mehrzylinder - Brennkraftmaschinen vorteilhaft einsetzen, wobei vorzugsweise pro Zylinder ein Drosselklappenstutzen mit jeweils einem Einlasskanal verbunden ist. The invention can be used advantageously both in single-cylinder as well as multi-cylinder internal combustion engines, wherein preferably one throttle valve nozzle is connected to one inlet channel per cylinder.
Die Brennkraftmaschine kann pro Zylinder ein Einlassventil oder aber auch mehrere Einlassventile aufweisen, wobei es besonders vorteilhaft ist, wenn pro Zylinder ein gemeinsamer Einlasskanal sich in zumindest zwei Zweigkanäle aufteilt und jeder Zweigkanal zu einer in den Zylinder mündenden Einlassöffnung führt. The internal combustion engine can have one intake valve per cylinder or even a plurality of intake valves, wherein it is particularly advantageous if per cylinder a common intake port splits into at least two branch passages and each branch passage leads to an intake port opening into the cylinder.
Die Erfindung wird im Folgenden anhand der Figuren näher erläutert. Es zeigen : The invention will be explained in more detail below with reference to FIGS. Show it :
Fig. 1 einen erfindungsgemäßen Einlassstrang, in einem Längsschnitt bei geschlossener Drosselklappe; 1 shows an inlet strand according to the invention, in a longitudinal section with the throttle valve closed;
Fig. 2 den Einlassstrang bei geöffneter Drosselklappe; und Fig. 3 den Einlassstrang in einen Schnitt gemäß der Linie III-III in Fig . 1. 2 shows the intake line with the throttle open; and Fig. 3 shows the inlet strand in a section along the line III-III in FIG. 1.
Die Fig . 1 und Fig. 2 zeigen einen Einlassstrang 1 einer Brennkraftmaschine mit einem in einem Zylinderkopf 2 angeordneten Einlasskanal 3, welcher über eine Einlassöffnungen 4a, 4b in den Brennraum eines nicht weiter dargestellten Zylinders einer Brennkraftmaschine einmündet. Der Einlasskanal 3 weist einen ersten Flanschbereich 3a auf, an welchen direkt ein dem ersten Flanschbereich 3a zugewandter zweiter Flanschbereich 6a eines Drosselklappenstutzens 6 angeschlossen ist. An den Drosselklappenstutzen 6 schließt ein Einlassrohr 9 an. Mit Bezugszeichen 5 ist eine gemeinsame Flanschebene bezeichnet. Im Drosselklappenstutzen 6 ist eine kreisrunde Drosselklappe 7 um eine Drehachse 8 drehbar angeordnet. Sowohl der Einlasskanal 3, als auch der Drosselklappenstutzen 6 weisen in ihren Flanschbereichen 3a, 6a jeweils einen kreisrunden Strömungsquerschnitt auf, wie etwa in Fig. 3 erkennbar ist. Der Abstand y zwischen der Drehachse 8 der Drosselklappe 7 und dem ersten Flanschbereich 3a, insbesondere der Flanschebene 5, ist kleiner als der Radius r des kreisrunden Strömungsquerschnittes des Drosselklappenstutzens 6 im zweiten Flanschbereich 6a . Dadurch kann die Drosselklappe 7 in der in Fig . 2 dargestellten Öffnungsstellung in den Einlasskanal 3 hineinragen. The Fig. 1 and FIG. 2 show an intake branch 1 of an internal combustion engine with an inlet channel 3 arranged in a cylinder head 2, which opens via an inlet opening 4a, 4b into the combustion chamber of a cylinder, not shown, of an internal combustion engine. The inlet channel 3 has a first flange region 3 a, to which a second flange region 6 a of a throttle body 6 facing the first flange region 3 a is directly connected. At the throttle body 6, an inlet pipe 9 connects. Reference numeral 5 denotes a common flange plane. In the throttle body 6, a circular throttle valve 7 is arranged rotatably about a rotation axis 8. Both the inlet channel 3 and the throttle body 6 each have a circular flow cross-section in their flange areas 3a, 6a, as can be seen in FIG. 3, for example. The distance y between the axis of rotation 8 of the throttle valve 7 and the first flange portion 3a, in particular the flange plane 5, is smaller than the radius r of the circular flow cross-section of the throttle body 6 in the second flange portion 6a. As a result, the throttle valve 7 in the in Fig. 2 open position project into the inlet channel 3.
Wie in Fig . 3 ersichtlich ist, verzweigt sich im Ausführungsbeispiel der Einlasskanal 3 pro Zylinder in zwei Zweigkanäle 3', 3", welche jeweils zu einer in den Zylinder mündenden Einlassöffnung 4a, 4b führen. As shown in FIG. 3, branches in the embodiment of the intake port 3 per cylinder in two branch channels 3 ', 3 ", which each lead to an opening into the cylinder inlet opening 4a, 4b.
Dadurch, dass der Einlasskanal 3 und der Drosselklappenstutzen 6 korrespondierende kreisrunde Strömungsquerschnitte in einander zugewandten Flanschbereichen 3a, 6a aufweisen und der Drosselklappenstutzen 6 direkt an den Einlasskanal 3 angeschlossen ist, kann der Abstand zwischen der Drehachse 8 der Drosselklappe 7 und den Einlassöffnungen 4a, 4b in den Zylinder und somit das Totvolumen im Einlasskanal 3 sehr klein gehalten werden. Dies wirkt sich - wegen des geringeren Restgasgehaltes bei Teillast - unmittelbar vorteilhaft auf den Kraftstoffverbrauch und die Verbrennungsstabilität der Brennkraftmaschine aus. Durch die Einsparung eines Übergangstückes zwischen dem Drosselklappenstutzen 6 und dem Einlasskanal 3 kann darüber hinaus die Anzahl an Teilen reduziert werden. Characterized in that the inlet channel 3 and the throttle body 6 have corresponding circular flow cross-sections in facing flange portions 3a, 6a and the throttle body 6 is connected directly to the inlet channel 3, the distance between the axis of rotation 8 of the throttle valve 7 and the inlet openings 4a, 4b in the cylinder and thus the dead volume in the inlet channel 3 are kept very small. This has - because of the lower residual gas content at partial load - directly beneficial to the fuel consumption and combustion stability of the engine. By saving a transition piece between the throttle body 6 and the inlet channel 3, moreover, the number of parts can be reduced.

Claims

P A T E N T A N S P R Ü C H E  P A T E N T A N S P R E C H E
Einlassstrang (1) für eine Brennkraftmaschine, insbesondere für ein Motorrad, mit zumindest einem Einlassrohr (9), welches über einen Drosselklappenstutzen (6) mit zumindest einem in einem Zylinderkopf (2) der Brennkraftmaschine angeordneten Einlasskanal (3) strömungsverbunden ist, wobei sowohl der Einlasskanal (3), als auch der Drosselklappenstutzen (6) in einander zugewandten ersten und zweiten Flanschbereichen (3a, 6a) des Einlasskanals (3) bzw. des Drosselklappenstutzens (6) jeweils einen kreisrunden Strömungsquerschnitt aufweisen, wobei im Drosselklappenstutzen (6) eine kreisrunde Drosselklappe (7) um eine Drehachse (8) drehbar gelagert ist, dadurch gekennzeichnet, dass die Drosselklappe (7) in zumindest einer Öffnungsstellung teilweise in den Einlasskanal (3) hineinragt. An intake manifold (1) for an internal combustion engine, in particular for a motorcycle, having at least one inlet pipe (9) which is flow-connected via a throttle body (6) to at least one inlet duct (3) arranged in a cylinder head (2) of the internal combustion engine, both of which Inlet channel (3), and the throttle body (6) in each facing first and second flange portions (3a, 6a) of the inlet channel (3) and the throttle body (6) each have a circular flow cross-section, wherein in the throttle body (6) has a circular Throttle valve (7) is rotatably mounted about an axis of rotation (8), characterized in that the throttle flap (7) projects in at least one open position partially into the inlet channel (3).
Einlassstrang (1) nach Anspruch 1, dadurch gekennzeichnet, dass der zweite Flanschbereich (6a) des Einlassstutzens (6) unmittelbar an den ersten Flanschbereich (3a) des Einlasskanals (3) grenzt und der Drosselklappenstutzen (6) direkt mit dem Zylinderkopf (2) verbunden ist. An intake manifold (1) according to claim 1, characterized in that the second flange portion (6a) of the inlet stub (6) directly adjoins the first flange portion (3a) of the intake passage (3) and the throttle body (6) directly adjoins the cylinder head (2). connected is.
Einlassstrang (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Abstand (y) der Drehachse (8) der Drosselklappe (7) vom ersten Flanschbereich (3a) des Einlasskanals (3) kleiner ist als der Radius (r) des Strömungsquerschnittes im zweiten Flanschbereich (6a) des Drosselklappenstutzens (6). Inlet line (1) according to claim 1 or 2, characterized in that the distance (y) of the axis of rotation (8) of the throttle valve (7) from the first flange portion (3a) of the inlet channel (3) is smaller than the radius (r) of the flow cross-section in the second flange portion (6a) of the throttle body (6).
Einlassstrang (1) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass pro Zylinder ein Drosselklappenstutzen (6) mit jeweils einem Einlasskanal (3) verbunden ist. Inlet line (1) according to one of claims 1 to 3, characterized in that per cylinder, a throttle body (6) is connected to a respective inlet channel (3).
Einlassstrang (1) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass pro Zylinder ein gemeinsamer Einlasskanal (3) sich in zumindest zwei Zweigkanäle (3', 3") aufteilt, wobei jeder Zweigkanal (3', 3") zu einer in den Zylinder mündenden Einlassöffnung (4a, 4b) führt. Inlet line (1) according to one of claims 1 to 4, characterized in that per cylinder, a common inlet channel (3) is divided into at least two branch channels (3 ', 3 "), each branch channel (3', 3") to a leading into the cylinder inlet opening (4a, 4b) leads.
PCT/EP2012/071487 2011-11-03 2012-10-30 Inlet section for an internal combustion engine WO2013064498A1 (en)

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AT16202011A AT511721B1 (en) 2011-11-03 2011-11-03 INTAKE TRACK FOR AN INTERNAL COMBUSTION ENGINE
ATA1620/2011 2011-11-03

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