FR2860550A1 - Intake module for internal combustion engine, has aerodynamic flaps rotating around respective axles that are parallel to each other, and inlet lines with oval section so that flaps present less width and large axial length - Google Patents

Intake module for internal combustion engine, has aerodynamic flaps rotating around respective axles that are parallel to each other, and inlet lines with oval section so that flaps present less width and large axial length Download PDF

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Publication number
FR2860550A1
FR2860550A1 FR0452265A FR0452265A FR2860550A1 FR 2860550 A1 FR2860550 A1 FR 2860550A1 FR 0452265 A FR0452265 A FR 0452265A FR 0452265 A FR0452265 A FR 0452265A FR 2860550 A1 FR2860550 A1 FR 2860550A1
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FR
France
Prior art keywords
flaps
intake
intake module
internal combustion
combustion engine
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Withdrawn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
FR0452265A
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French (fr)
Inventor
Jochen Linhart
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
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 Mann and Hummel GmbH filed Critical Mann and Hummel GmbH
Publication of FR2860550A1 publication Critical patent/FR2860550A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F02D9/109—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps having two or more flaps
    • 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
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/08—Modifying distribution valve timing for charging purposes
    • F02B29/083—Cyclically operated valves disposed upstream of the cylinder intake valve, controlled by external means
    • 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
    • F02D9/104—Shaping of the flow path in the vicinity of the flap, e.g. having inserts in the housing
    • 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
    • F02D9/1065—Mechanical control linkage between an actuator and the flap, e.g. including levers, gears, springs, clutches, limit stops of the like
    • 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
    • F02D9/109—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps having two or more flaps
    • F02D9/1095—Rotating on a common axis, e.g. having a common shaft
    • 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

Abstract

The module has a manifold (11) with four inlet lines (13-16). The lines are equipped with corresponding flaps (18-21) whose opening and closing are controlled by respective actuators (22-25). The flaps are aerodynamic and rotate around their respective axles that are parallel with each other.. The lines have an oval section so that the flaps present less width and large axial length.

Description

Domaine de l'inventionField of the invention

La présente invention concerne un module d'admission, notamment pour des moteurs à combustion interne, comprenant une conduite d'admission avec au moins deux canaux d'admission et chacun un moyen d'obturation pour influencer sa section de passage, chaque moyen d'obturation étant commandé par un moyen d'actionnement. Etat de la technique Un tel module d'admission est par exemple connu selon le document US 4 823 748. Ce document décrit un dispositif d'aspiration ou d'admission d'un moteur à combustion interne ayant au moins deux canaux d'admission équipés chacun d'un moyen d'obturation pour influencer la section de passage. Ces moyens d'obturation sont commandés par un moyen d'actionnement commun par l'intermédiaire d'un moyen de liai-son. La compensation des tolérances entre le moyen d'actionnement et le moyen d'obturation se fait par une zone élastique. L'élasticité résulte de composants ayant une élasticité particulière. L'utilisation de composants élastiques a l'inconvénient d'entraîner des frais de construction et de montage supplémentaires ce qui est au détriment de l'économie de la solution proposée.  The present invention relates to an intake module, in particular for internal combustion engines, comprising an intake duct with at least two intake ducts and each closure means for influencing its passage section, each means of shutter being controlled by an actuating means. State of the art Such an intake module is for example known from document US Pat. No. 4,823,748. This document describes a device for suctioning or admitting an internal combustion engine having at least two intake channels equipped with them. each of a sealing means for influencing the passage section. These shutter means are controlled by a common actuating means via a means of liai-son. The compensation of the tolerances between the actuating means and the sealing means is effected by an elastic zone. The elasticity results from components having a particular elasticity. The use of elastic components has the disadvantage of causing additional construction and assembly costs which is to the detriment of the economy of the proposed solution.

Selon le document EP 968 360 on connaît un module d'admission dont au moins deux moyens d'obturation sont actionnés par des moyens d'actionnement communs par l'intermédiaire de moyens de couplage; ces moyens de couplage ont au moins une zone élastique pour compenser les tolérances entre le moyen d'actionnement et les moyens d'obturation. La zone élastique correspond par exemple à un affaiblisse-ment de la matière et notamment une réduction d'épaisseur de la matière. Ces moyens permettent de compenser les tolérances entre les différents moyens d'actionnement mais pour cela il faut une tringlerie.  According to EP 968 360 there is known an intake module of which at least two closure means are actuated by common actuating means via coupling means; these coupling means have at least one elastic zone to compensate for the tolerances between the actuating means and the sealing means. The elastic zone corresponds for example to a weakening-ment of the material and in particular a reduction in thickness of the material. These means make it possible to compensate the tolerances between the different actuating means but for this it is necessary a linkage.

But de l'invention La présente invention a pour but de développer un module d'admission comportant un moyen d'obturation dans chaque canal d'admission, et les moyens d'obturation pouvant étre commandés indépendamment les uns des autres et même ainsi de façon tolérante vis-àvis de leur position.  OBJECT OF THE INVENTION The present invention aims to develop an intake module comprising a closure means in each intake channel, and the closure means can be controlled independently of each other and even so tolerant of their position.

Exposé de l'invention A cet effet, l'invention concerne un module d'admission du type défini ci- dessus, caractérisé en ce que les moyens d'obturation peu- vent tourner chacun autour d'un axe et au moins deux axes de rotation des moyens d'obturation étant parallèles.  DESCRIPTION OF THE INVENTION To this end, the invention relates to an intake module of the type defined above, characterized in that the closure means can rotate each about an axis and at least two axes of rotation. rotation of the shutter means being parallel.

L'avantage essentiel de l'invention est de pouvoir commander indépendamment les uns des autres les moyens d'obturation et d'installer les axes de rotation pour que les moyens d'actionnement ne se gênent pas réciproquement notamment si l'installation se fait dans des conditions d'encombrement réduit, mais au contraire pour qu'ils puissent être prévus au-dessus de chaque canal d'admission.  The essential advantage of the invention is to be able to control the shutter means independently of one another and to install the axes of rotation so that the actuating means do not interfere with one another, particularly if the installation is done in a different manner. conditions of reduced size, but on the contrary that they can be provided above each intake channel.

Selon un développement avantageux de l'invention, chaque moyen d'actionnement comporte son propre actionneur qui peut être un moteur électrique, un moteur pas à pas, un moyen d'entraînement pneumatique ou hydraulique. Or, précisément, lors de la commutation d'un volet ou d'un moyen d'obturation, les moteurs pas à pas à commutation rapide se sont avérés comme particulièrement intéressants.  According to an advantageous development of the invention, each actuating means comprises its own actuator which can be an electric motor, a stepping motor, a pneumatic or hydraulic drive means. However, precisely when switching a shutter or a shutter means, fast switching stepper motors have proved to be particularly interesting.

Selon un développement de l'invention, on donne à la section du canal d'admission une forme particulièrement étroite au niveau du moyen d'obturation de façon que ce moyen d'obturation possède un faible moment d'inertie. Pour cela, on définit une section par exemple ovale et on place l'axe de rotation du moyen d'obturation dans la direction de cette section ovale. Mais il est également possible de choisir une section rectangulaire avec l'axe de rotation le long du grand côté du rectangle ou de façon centrée. Cette construction possède également un faible moment d'inertie. Dans le cas d'un module d'admission d'un moteur à combustion interne habituellement on ferme ou on ouvre en parallèle les canaux et c'est pourquoi il est intéressant et avantageux que les moyens d'obturation prennent essentiellement la même position, les canaux étant de préférence ouverts ou fermés. Mais il est également possible que les canaux se trouvent dans des positions intermédiaires.  According to a development of the invention, the intake channel section is given a particularly narrow shape at the closure means so that the closure means has a low moment of inertia. For this, define a section for example oval and place the axis of rotation of the closure means in the direction of this oval section. But it is also possible to choose a rectangular section with the axis of rotation along the long side of the rectangle or centrally. This construction also has a low moment of inertia. In the case of an intake module of an internal combustion engine, the channels are closed or opened in parallel, and it is therefore advantageous and advantageous for the closure means to take essentially the same position, channels preferably being open or closed. But it is also possible that the channels are in intermediate positions.

Dessins La présente invention sera décrite ci-après de manière plus détaillée à l'aide des dessins annexés dans lesquels: la figure 1 est une vue schématique en perspective d'un module d'admission d'un moteur à combustion interne, la figure 2 est une vue de détail d'une conduite d'admission, la figure 3 est une autre vue de détail d'une conduite d'admission, la figure 4 est une vue intérieure de la conduite d'admission de la figure 3, le volet de commutation étant ouvert.  Drawings The present invention will be described below in more detail with the aid of the accompanying drawings, in which: FIG. 1 is a schematic perspective view of an intake module of an internal combustion engine, FIG. is a detail view of an intake pipe, FIG. 3 is another detail view of an intake pipe, FIG. 4 is an inside view of the intake pipe of FIG. switching being open.

Description de modes de réalisation  Description of embodiments

Selon la figure 1, le module d'admission 10 correspond schématiquement aux conduites d'admission d'un moteur à combustion interne à. plusieurs cylindres; ces conduites d'admission sont équipées de volets pour régler le débit d'air. Il s'agit de volets à commutation rapide pour une suralimentation impulsionnelle. Ce module d'admission 10 se compose d'un collecteur 11 muni d'un orifice 12 et de quatre conduites d'admission 13, 14, 15, 16 aboutissant à une culasse 17 également représentée de manière seulement schématique d'un moteur à combustion in- terne. Les conduites d'admission 13-16 sont pour l'essentiel parallèles; chaque conduite est équipée d'un volet de commutation 18, 19, 20, 21 et ces volets de commutation 18-21 sont commandés à l'ouverture et à la fermeture chacun par un actionneur 22, 23, 24, 25. Chaque actionneur forme un module avec le volet de commutation et l'axe du volet; ce mo- dule se fixe par bride sur chaque conduite d'admission. L'air aspiré entrant par l'orifice 12 se répartit dans le collecteur 11 et alimente à la demande, les différents cylindres du moteur à combustion interne en passant par les conduites d'admission 13-16. Pour la suralimentation impulsionnelle du moteur à combustion interne on ferme ou ouvre les volets de commutation 18, 21 de façon cyclique et en synchronisme avec la vitesse de rotation du moteur à combustion interne. Le niveau de la vitesse de commutation est défini par les actionneurs correspondants. Dans la me-sure où on utilise un moteur électrique comme actionneur, la commande se fait par la centrale de gestion du moteur à combustion interne. La structure présentée est particulièrement avantageuse si les conduites d'admission sont très étroitement rapprochées et si les actionneurs des volets ne peuvent être installés dans l'intervalle des différentes conduites d'admission. Dans la figure, les actionneurs sont installés au-dessus de chaque conduite d'admission. Mais il est également possible d'installer les actionneurs sous chaque conduite d'admission.  According to Figure 1, the intake module 10 schematically corresponds to the intake ducts of an internal combustion engine. several cylinders; these intake ducts are equipped with shutters to adjust the air flow. These are fast-switching shutters for impulse boosting. This intake module 10 consists of a manifold 11 provided with an orifice 12 and four intake ducts 13, 14, 15, 16 terminating in a cylinder head 17 also shown in a schematic manner only of a combustion engine internal. The intake ducts 13-16 are essentially parallel; each pipe is equipped with a switching flap 18, 19, 20, 21 and these switching flaps 18-21 are controlled at the opening and closing each by an actuator 22, 23, 24, 25. Each actuator forms a module with the switching flap and the flap axis; this module is fixed flange on each intake pipe. The intake air entering through the orifice 12 is distributed in the manifold 11 and feeds, on demand, the various cylinders of the internal combustion engine via the intake ducts 13-16. For the pulse boost of the internal combustion engine is closed or opens the switching flaps 18, 21 cyclically and in synchronism with the speed of rotation of the internal combustion engine. The level of the switching speed is defined by the corresponding actuators. In the case where an electric motor is used as an actuator, the control is done by the internal combustion engine management unit. The structure presented is particularly advantageous if the intake pipes are very closely spaced and if the flap actuators can not be installed in the range of the various intake ducts. In the figure, the actuators are installed above each intake line. But it is also possible to install the actuators under each intake line.

La figure 2 est une vue de détail d'une conduite d'admission 13 ayant une section ovale en partant du collecteur 11 non représenté ; cette section ovale est ainsi définie dans la zone de la culasse. Au niveau du volet de commutation 18 fixé par son axe 27 dans la conduite d'admission 13, la section est telle que le volet présente une faible largeur et en même temps une grande longueur axiale. Cette solution a l'avantage de donner au volet de commutation 18 un faible moment d'inertie. La surface de la section disponible pour le passage de l'air reste inchangée entre l'entrée 26 dans la conduite d'admission et sa sortie.  Figure 2 is a detail view of an intake pipe 13 having an oval section from the manifold 11 not shown; this oval section is thus defined in the area of the cylinder head. At the switching flap 18 fixed by its axis 27 in the intake duct 13, the section is such that the flap has a small width and at the same time a great axial length. This solution has the advantage of giving the switching flap 18 a low moment of inertia. The area of the section available for the passage of air remains unchanged between the inlet 26 in the intake duct and its outlet.

La figure 3 montre l'évolution de la section d'une conduite d'admission 13, le volet de commutation 18 étant fermé (comme cela est présenté à la figure 2). Cette figure 3 montre clairement la variation de section avantageuse pour le cintrage de la conduite d'admission respective. La figure 4 est une vue du volet de commutation 18 à partir de l'orifice 28 de la conduite d'admission 13 dans la culasse. Le volet de commutation est en position d'ouverture, porté par son axe 27 qui reçoit un actionneur. Le volet de commutation 18 est aérodynamique comme toute la conduite d'admission pour éviter dans une très large mesure les pertes de charge en position d'ouverture.  Figure 3 shows the evolution of the section of an intake pipe 13, the switching flap 18 being closed (as shown in Figure 2). This Figure 3 clearly shows the advantageous section variation for the bending of the respective intake pipe. Figure 4 is a view of the switch flap 18 from the port 28 of the intake duct 13 in the cylinder head. The switching flap is in the open position, carried by its axis 27 which receives an actuator. The switching flap 18 is aerodynamic like the entire intake duct to avoid to a very large extent the pressure drop in the open position.

Il est également possible d'installer les axes de rotation des moyens de fermeture qui sont pratiquement parallèles dans les dessins de façon que chaque fois deux axes de rotation soient parallèles et que les deux autres axes font un certain angle par rapport aux deux autres axes ou aux différents autres axes. Certaines conditions d'installation peuvent en effet nécessiter un tel décalage angulaire.  It is also possible to install the axes of rotation of the closure means which are substantially parallel in the drawings so that each time two axes of rotation are parallel and the other two axes are at a certain angle with respect to the other two axes or to the different other axes. Certain installation conditions may indeed require such an angular offset.

2860550 s2860550 s

Claims (5)

REVENDICATIONS 1 ) Module d'admission (10), notamment pour des moteurs à combustion interne, comprenant une conduite d'admission (11) avec au moins deux canaux d'admission (13, 14, 15, 16) et chacun un moyen d'obturation (18, 19, 20, 21) pour influencer sa section de passage, chaque moyen d'obturation étant commandé par un moyen d'actionnement (22, 23, 24, 25), caractérisé en ce que les moyens d'obturation (18-21) peuvent tourner chacun autour d'un axe 10 (27) et au moins deux axes de rotation des moyens d'obturation étant parallèles.  1) Intake module (10), in particular for internal combustion engines, comprising an intake duct (11) with at least two intake ducts (13, 14, 15, 16) and each a means for shutter (18, 19, 20, 21) for influencing its passage section, each shut-off means being controlled by an actuating means (22, 23, 24, 25), characterized in that the shut-off means ( 18-21) can rotate each about an axis (27) and at least two axes of rotation of the shutter means being parallel. 2 ) Module d'admission selon la revendication 1, caractérisé en ce que chaque moyen d'actionnement (22-25) est un actionneur indépendant installé directement sur l'axe de rotation (27).  2) intake module according to claim 1, characterized in that each actuating means (22-25) is an independent actuator installed directly on the axis of rotation (27). 3 ) Module d'admission selon la revendication 1, caractérisé en ce que la section du canal d'admission (13-16) est formée au niveau du moyen d'obturation (18-21) pour que ce moyen possède un faible moment d'inertie.  3) intake module according to claim 1, characterized in that the section of the inlet channel (13-16) is formed at the closure means (18-21) so that this means has a low moment of 'inertia. 4 ) Module d'admission selon la revendication 3, caractérisé en ce que la section au niveau du moyen d'obturation est ovale et l'axe de rotation du moyen d'obturation est dirigé suivant l'alignement de la forme ovale.  4) intake module according to claim 3, characterized in that the section at the closure means is oval and the axis of rotation of the closure means is directed along the alignment of the oval shape. 5 ) Module d'admission selon la revendication 1, caractérisé en ce que tous les moyens d'obturation (18-21) prennent en principe la même position, et en particulier deux positions, notamment une position d'ouverture et une position de fermeture, sont définies chacune par une butée.  5) Intake module according to claim 1, characterized in that all the closure means (18-21) take in principle the same position, and in particular two positions, in particular an open position and a closed position are each defined by a stop.
FR0452265A 2003-10-06 2004-10-05 Intake module for internal combustion engine, has aerodynamic flaps rotating around respective axles that are parallel to each other, and inlet lines with oval section so that flaps present less width and large axial length Withdrawn FR2860550A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10346763A DE10346763A1 (en) 2003-10-06 2003-10-06 Suction module, in particular for internal combustion engines

Publications (1)

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FR2860550A1 true FR2860550A1 (en) 2005-04-08

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FR0452265A Withdrawn FR2860550A1 (en) 2003-10-06 2004-10-05 Intake module for internal combustion engine, has aerodynamic flaps rotating around respective axles that are parallel to each other, and inlet lines with oval section so that flaps present less width and large axial length

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DE (1) DE10346763A1 (en)
FR (1) FR2860550A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008017919A1 (en) * 2006-08-07 2008-02-14 Toyota Jidosha Kabushiki Kaisha Variable intake apparatus for v-type internal combustion engine
CN103527358A (en) * 2013-09-27 2014-01-22 潍柴动力股份有限公司 Engine and air inlet elbow of engine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5228069B2 (en) 2011-01-21 2013-07-03 株式会社小松製作所 Air pipe and supercharger
JP5867322B2 (en) * 2012-07-04 2016-02-24 アイシン精機株式会社 Airflow control device
CN103867322B (en) 2012-12-13 2019-07-05 周氏（北京）汽车技术有限公司 A kind of control method of automobile and internal combustion engine
BR112022015162A2 (en) * 2020-02-01 2022-10-11 Tvs Motor Co Ltd MOTOR VEHICLE WITH A CI ENGINE

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19800207A1 (en) * 1997-03-20 1998-09-24 Mann & Hummel Filter Suction module for IC engine
DE10008296A1 (en) * 2000-02-23 2001-02-22 Daimler Chrysler Ag Throttle flap element actuating device for combustion engine intake manifold system, uses electrically driven rotary magnet as drive element with rotor joined torsionally tight to throttle flap element shaft
EP1296042A2 (en) * 2001-09-20 2003-03-26 Hitachi Ltd. Air flow control valve operating apparatus for internal combustion engine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19800207A1 (en) * 1997-03-20 1998-09-24 Mann & Hummel Filter Suction module for IC engine
EP0968360A1 (en) 1997-03-20 2000-01-05 FILTERWERK MANN + HUMMEL GmbH Intake module
DE10008296A1 (en) * 2000-02-23 2001-02-22 Daimler Chrysler Ag Throttle flap element actuating device for combustion engine intake manifold system, uses electrically driven rotary magnet as drive element with rotor joined torsionally tight to throttle flap element shaft
EP1296042A2 (en) * 2001-09-20 2003-03-26 Hitachi Ltd. Air flow control valve operating apparatus for internal combustion engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008017919A1 (en) * 2006-08-07 2008-02-14 Toyota Jidosha Kabushiki Kaisha Variable intake apparatus for v-type internal combustion engine
US8065982B2 (en) 2006-08-07 2011-11-29 Toyota Jidosha Kabushiki Kaisha Variable intake apparatus for V-type internal combustion engine
CN103527358A (en) * 2013-09-27 2014-01-22 潍柴动力股份有限公司 Engine and air inlet elbow of engine
CN103527358B (en) * 2013-09-27 2016-05-11 潍柴动力股份有限公司 A kind of engine and intake elbow thereof

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DE10346763A1 (en) 2005-05-19
JP2005113912A (en) 2005-04-28

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