EP1035312A2 - Corps de papillon pour commander la puissance d'un moteur à combustion - Google Patents

Corps de papillon pour commander la puissance d'un moteur à combustion Download PDF

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Publication number
EP1035312A2
EP1035312A2 EP99123628A EP99123628A EP1035312A2 EP 1035312 A2 EP1035312 A2 EP 1035312A2 EP 99123628 A EP99123628 A EP 99123628A EP 99123628 A EP99123628 A EP 99123628A EP 1035312 A2 EP1035312 A2 EP 1035312A2
Authority
EP
European Patent Office
Prior art keywords
throttle valve
gas channel
throttle
throttle body
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Withdrawn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
EP99123628A
Other languages
German (de)
English (en)
Other versions
EP1035312A3 (fr
Inventor
Thomas Jakisch
Uwe Hammer
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1035312A2 publication Critical patent/EP1035312A2/fr
Publication of EP1035312A3 publication Critical patent/EP1035312A3/fr
Withdrawn legal-status Critical Current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
    • F02D9/1035—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
    • F02D9/1045—Shaping of the flow path in the vicinity of the flap, e.g. having inserts in the housing for sealing of the flow in closed flap position, e.g. the housing forming a valve seat
    • 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
    • F02D9/101—Special flap shapes, ribs, bores or 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
    • F02D9/1005—Details of the flap
    • F02D9/101—Special flap shapes, ribs, bores or the like
    • F02D9/1015—Details of the edge of the flap, e.g. for lowering flow noise or improving flow sealing in closed flap position

Definitions

  • the invention relates to a throttle body Control the performance of an internal combustion engine according to the Genus of claim 1.
  • the well-known throttle body with the S-shaped design Gas channel wall has the disadvantage that its shape Manufacturing is pretty difficult and if that Throttle valve is in its closed position, the leakage air is not as low as desired and because of so far inevitably occurring tolerances with large series Manufacture of the throttle valve body a pinch between the throttle valve and the gas duct wall more or less occurs frequently.
  • the throttle valve assembly according to the invention for controlling the Performance of an internal combustion engine with the characteristic Features of claim 1 has the advantage that the throttle body can be carried out so that at a Throttle valve adjustment in the closed position the throttle cross section through the gas duct, based on the Adjustment angle of the throttle valve, changes little and therefore a very sensitive control of the performance of the internal combustion engine is possible.
  • the shape as well the size and depth of the recess slightly as needed be adjusted, so that advantageously the ratio of the throttle cross section to the adjustment angle of the Throttle valve very simple and easily adjusted and without great effort can also be changed.
  • the throttle body has the advantage that it is simple A particularly flat air characteristic curve in the idling range is achievable.
  • the throttle body can be designed so that in the closed position the throttle valve an adjustment of the throttle valve only a particularly small change in the amount of air corresponds. This results in a particularly simple and Comfortable idle control of the internal combustion engine.
  • the gas duct wall can be easily provided with an edge can, which can be used in an intermediate position the throttle valve only through the gas a depression flows.
  • the gas channel wall can advantageously be designed so that in the closed position Deepening is out of function.
  • the axis of rotation is outside of the essentially level formed by the flap circumference, then this has the Advantage that the effort required to manufacture Individual parts and the effort involved in assembling the individual parts is further reduced. It is particularly advantageous that despite a low manufacturing effort, a throttle body can be produced with particularly low leakage air is. Another advantage is that components and materials, for those with relatively large dimensional and shape tolerances must be used, and that a small amount of leakage air can also be achieved with it. Of An additional advantage is that the throttle valve is adjustable is that there is no contact between the throttle and the gas channel wall occurs so that increased friction is avoided and advantageously a throttle valve Actuator therefore not dimensioned more powerful have to be. The throttle body can be manufactured in this way be that when the throttle valve is in its closed position stands over the entire circumference of the throttle valve there is a narrow gap that allows little leakage air is. This narrow gap is advantageously not in the Throttle valve shaft area interrupted.
  • FIGs 1 and 2 show a longitudinal section through the throttle valve neck, the figure in FIG Throttle valve in its closed position and in FIG. 2 is slightly pivoted out of the closed position, Figures 3 and 4, the throttle valve as a single part Figures 5 and 6 detailed views of the depression in the Throttle valve, Figure 7 shows a longitudinal section through second embodiment and Figure 8 is a longitudinal section through the throttle body of a third Embodiment.
  • the throttle valve connector designed according to the invention can be used in any internal combustion engine in which the Performance of the internal combustion engine by one of the internal combustion engine supplied gas stream should be controlled.
  • gas is air or an air-fuel mixture.
  • the internal combustion engine is, for example, an Otto engine with a suction channel, in the course of which the throttle valve connector is provided.
  • the Performance with the help of the throttle valve assembly can help the internal combustion engine also other options Give control of performance, for example by optional control directly into the internal combustion engine amount of fuel injected.
  • FIGS 1 and 2 show a longitudinal section through a throttle valve 2 of a preferably selected, particularly advantageous embodiment.
  • the throttle body 2 has a throttle body 4, a throttle valve 6 and a throttle valve shaft 10. Die Throttle valve 6 is firmly connected to the throttle valve shaft 10.
  • Gas channel 16 is limited in scope through a gas duct wall 18.
  • the throttle valve shaft 10 is pivotally mounted in the gas channel wall 18.
  • the throttle valve 6 has a closed position.
  • the closed position the throttle valve 6 is the position of the Throttle valve 6, in which a free cross section of the gas channel 16 is closed or in which the free cross section of the Gas channel 16 at least reached its minimum. In the The closed position cannot be a medium or only a very small one Flow the amount of the medium through the gas channel 16.
  • FIG. 1 shows the throttle valve connector 2, while the throttle valve 6 is in its closed position.
  • the throttle valve 6 is pivoted out of its closed position just so far into an intermediate position that the gas channel 16 leading through the throttle valve neck 2 begins to open.
  • the gas channel 16 or the gas channel wall 18 has one narrowing area 20.
  • the gas channel has 16 below the narrowing area 20 larger area, first area 21, and above the narrowing area 20 there is an area smaller, second area 22.
  • the lower, first area 21 has a larger cross-sectional area than the top, second Area 22.
  • the first area 21 has a diameter D.
  • the second region 22 has a diameter d. Longitudinal of the gas channel 16 is considered, the narrowing Area 20 between the first area 21 and the second area 22 more or less steadily progressively narrower.
  • the throttle valve 6 has a valve circumference 26.
  • the diameter d of the second region 22 is smaller than the diameter the throttle valve 6 in the region of the valve circumference 26, and the diameter D of the first region 21 is larger than the diameter of the throttle valve 6 on the valve circumference 26.
  • the free cross-sectional area of the Suction channel 16 and the cross-sectional area of the throttle valve 6 not necessarily circular, but also, for example can be elliptical or oval.
  • the areas 21 and / or 22 of the gas channel 16 can, for example, be cylindrical (FIG. 1, 2, 7) or conical (Fig. 8).
  • the throttle body 2 does not have to be spatially aligned as shown but it can also be used rotated as desired become.
  • the first area 21 can also are located above the throttle valve 6, as in FIG. 8 shown.
  • the throttle valve 6 has one molded onto one of its end faces Thickening 32.
  • the thickening 32 and the throttle valve 6 are integrally molded from plastic.
  • the thickening 32 is as long as the diameter of the throttle valve 6. Because the thickening accommodating the throttle valve shaft 10 32 is located outside the area where sealed the thickening 32 can also be noticeably shorter than the diameter of the throttle valve 6, without this the leakage rate undesirably worsened. Is the thickening 32 slightly shorter than the diameter of the throttle valve 6, then the risk is advantageously reduced a jam between the throttle valve 6 and the Throttle body 4.
  • a bore 34 extends through the thickening 32.
  • the Throttle valve shaft 10 is fixed in the bore 34 with the Throttle valve 6 connected.
  • the throttle valve 6 is pushed so far into the gas channel 16 with a device, until the valve circumference 26 of the throttle valve 6 the narrowing region 20 of the gas duct wall 18 Facility is coming. As a result, the throttle valve 6 is centered horizontal direction so that it is circumferentially even at the narrowing region 20 of the gas duct wall 18 is present.
  • the throttle valve 6 is now in one hereinafter referred to as the alignment position. Starting from the alignment position, the throttle valve 6 slightly raised from the narrowing region 20. The flap circumference 26 lifts only a little from the narrowing Area 20, and the gap 30 is formed Setting the very narrow gap 30 can be very precise a very low, precisely predictable value can be set. Scored in this way The position of the rotary bearing of the throttle valve is determined.
  • the throttle valve 6 is in the region of the valve circumference 26 relatively thin. You can therefore mentally create a level imagine in which the flap circumference 26 lies, or Throttle valve 6 forms in the region of its valve circumference 26 a level.
  • the throttle valve shaft 10 is in the throttle valve housing 4 pivoted. About this storage the throttle valve shaft 10 receives an axis of rotation 40 around which the throttle valve shaft 10 together with the throttle valve 6 can be rotated or pivoted.
  • the axis of rotation 40 has a clear distance to the plane from the flap circumference 26 is formed. The distance between the axis of rotation 40 and the plane formed by the flap circumference 26 is clear greater than the thickness of the throttle valve 6 in the area of Flap circumference 26.
  • the throttle valve shaft 10 has a shaft diameter.
  • a throttle valve shaft 10 in the area of the passage the throttle valve shaft 10 through the gas duct wall 18 To avoid internal leakage air flowing around, it is proposed the distance between the axis of rotation 40 and the To select the level of the flap circumference 26 at least as large as that the flap circumference 26 without the throttle shaft 10 to be interrupted over the entire scope of the Throttle valve 6 can run.
  • the distance between the Axis of rotation 40 and the plane formed by the flap circumference 26 should be at least slightly larger than half Diameter of the throttle valve shaft 10.
  • the throttle valve 6 can be pivoted or rotated without the throttle valve 6 brushes against the gas channel wall 18, despite the particularly narrow Gap 30.
  • the Slope of the narrowing region 20 preferably that Shape of a spherical section.
  • the center of the spherical section is preferably in the middle of the gas duct 16 on the axis of rotation 40 or at the intersection of the Axis of rotation 40 with the longitudinal axis of the gas channel 16.
  • the itself narrowing area 20 is designed so that at the transition from the narrowing area 20 to the first area 21 does not result in a kink, but the narrowing region 20 goes tangentially into the first area 21 of the gas channel wall 18 over. At the transition between the narrowing area 20 and the second area 22 is a kink. Thereby there is an edge 44.
  • the gas channel wall 18 is preferably executed so that the kink all the way over the entire scope arises; edge 44 is thus preferred a peripheral edge 44.
  • edge 44 is thus preferred a peripheral edge 44.
  • the throttle valve 6 can, starting from the one in FIG shown closed position, adjusted in the opening direction become.
  • the opening direction is through in the drawings symbolizes an arrow with reference numeral 46.
  • FIG. 3 the throttle valve 6, for the sake of clarity, is shown again with a changed scale as a single part.
  • the view shown in FIG. 3 is obtained by looking at the throttle valve 6 with the viewing direction marked III in FIG.
  • FIG. 4 shows a sectional plane through the throttle valve 6 marked IV - IV in FIG. 3.
  • FIG. 5 shows an enlarged detail of the detail marked V in FIG. 3.
  • FIG. 6 shows a detail marked VI in FIG. 4 as an enlarged detail.
  • the throttle valve 6 has a first region 21 facing first end face 41 and a second area 22 facing second end face 42.
  • the diameter of the first End face 41 is slightly larger than the diameter of the second end face 42.
  • the flap circumference tapers 26, viewed in the longitudinal direction of the gas channel. With in other words, viewed in the longitudinal direction of the gas channel 16, the diameter of the flap circumference 26 starting from the first end face 41 in the direction of second end face 42.
  • the throttle valve 6 has at the transition between the valve circumference 26 and the first end face 41 a circumferential first Flap edge 51 (Figs. 4, 5 and 6). Between the perimeter of the flap 26 and the second end face 42 has the throttle valve 6 a circumferential second flap edge 52 (Fig. 4 and 6).
  • At least one is on the end face 41 of the throttle valve 6 Indentation 50 is provided.
  • the on the end face 41 of the Throttle valve 6 provided recess 50 extends radially outward and extends into the flap circumference 26 inside.
  • the at least one depression 50 connects not the two end faces 41 and 42 of the throttle valve 6, so that when the throttle valve 6 is in its closed position stands, the narrow gap 30 through the recess 50 does not is interrupted.
  • the depression 50 is on the axis of rotation 40 facing end face 41 attached.
  • the recess 50 In the circumferential direction considered the throttle valve 6 is the recess 50 fairly narrow, for example 0.5 mm to 2 mm, accordingly 0.0005 m (meters) to 0.002 m (meters).
  • the recess 50 in the area of the Flap circumference 26 to attach, the axis of rotation 40 on farthest away and that when swiveling the throttle valve 6 from its closed position in the opening direction 46 first passes over the edge 44.
  • the deepening 50 is preferably on the circumference of the throttle valve 6 attached to the point where one is perpendicular to the axis of rotation 40 imaginary diameter line intersects the valve circumference 26 or at least in this area.
  • the recess 50 has, viewed in cross section, preferably approximately the shape of a triangular notch. Thereby the free throttle cross-section changes with an adjustment the throttle valve 6 in the area of the in FIG shown intermediate position steadily.
  • the notch shape can the recess 50 even with a relatively small cross section be made relatively deep, making them more sensitive to dirt is relatively small.
  • one further depression 50a or further depressions 50a, 50b be provided (Fig. 3).
  • the further depressions 50a, 50b are also on the first end face 41 and also extend into the flap circumference 26. Die further depressions 50a, 50b are on the first flap edge 51 offset for example up to 45 ° to the recess 50 appropriate. Depending on your needs, it is also appropriate to further depressions 50a, 50b immediately next to the first To make recess 50.
  • Throttle valve 6 has a particularly small amount of leakage air and with which the performance of the internal combustion engine in The area of low output is controlled with particular care can be.
  • FIG. 7 shows a further, particularly advantageous, preferably selected exemplary embodiment.
  • a further recess 60 is provided on the end face 42.
  • the Indentation 60 extends diagonally to indentation 50 on the second end face 42 into the flap circumference 26 inside. This ensures that even in this area the throttle valve 6 at a certain pivot position Throttle valve 6 a the controllability when opening the Gas channel 16 improving control possibility is created.
  • FIG. 8 shows a longitudinal section through a further preferred embodiment selected. As this embodiment shows, the throttle valve 6 does not necessarily have to be flat. In addition, the throttle valve 6 is shown in broken lines in FIG. 8 when it is in the fully open position.

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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)
  • Lift Valve (AREA)
EP99123628A 1999-03-06 1999-11-27 Corps de papillon pour commander la puissance d'un moteur à combustion Withdrawn EP1035312A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1999109982 DE19909982A1 (de) 1999-03-06 1999-03-06 Drosselklappenstutzen zum Steuern der Leistung einer Brennkraftmaschine
DE19909982 1999-03-06

Publications (2)

Publication Number Publication Date
EP1035312A2 true EP1035312A2 (fr) 2000-09-13
EP1035312A3 EP1035312A3 (fr) 2001-03-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP99123628A Withdrawn EP1035312A3 (fr) 1999-03-06 1999-11-27 Corps de papillon pour commander la puissance d'un moteur à combustion

Country Status (3)

Country Link
EP (1) EP1035312A3 (fr)
JP (1) JP2000265860A (fr)
DE (1) DE19909982A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004022304A1 (fr) * 2002-09-03 2004-03-18 Siemens Aktiengesellschaft Procede de separation d'une tubulure a papillon
WO2006056789A2 (fr) * 2004-11-26 2006-06-01 Ricardo Uk Limited Carburateur
DE102007025177A1 (de) * 2007-05-29 2008-12-04 Mahle International Gmbh Schaltventil
EP1764492B2 (fr) † 2005-09-20 2016-01-27 Mahle International GmbH Système d'alimentation d'air frais pour un moteur à combustion interne

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10157963A1 (de) 2001-11-26 2003-06-05 Siemens Ag Drosselklappenstutzen
DE102006045420A1 (de) * 2006-09-26 2008-04-10 Pierburg Gmbh Drosselklappenvorrichtung für eine Verbrennungskraftmaschine
JP5823791B2 (ja) * 2011-09-16 2015-11-25 株式会社ミクニ スロットルバルブ

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3298677A (en) * 1964-04-20 1967-01-17 Champion Spark Plug Co Throttle valve for internal combustion engines
DE2045639A1 (de) * 1969-09-22 1971-04-22 Serck Industries Ltd Drosselklappensteuerventil
US3945398A (en) * 1973-06-29 1976-03-23 Henry Masheder Check valves
GB2035516A (en) * 1978-11-03 1980-06-18 Goriziane Spa Off Mec Valve for brake retarder of diesel engines
US4243000A (en) * 1978-03-15 1981-01-06 Yamaha Hatsukoki Kabushiki Kaisha Induction system of multi-cylinder engine
EP0052534A1 (fr) * 1980-11-19 1982-05-26 Omnibrev Holding Ag Vanne papillon
US4491106A (en) * 1982-11-29 1985-01-01 Morris George Q Throttle configuration achieving high velocity channel at partial opening
JPS62127576A (ja) * 1985-11-28 1987-06-09 Canon Inc 制御バルブ
GB2249348A (en) * 1990-10-31 1992-05-06 Weber Srl I.C. engine throttle valve body
DE19615438A1 (de) * 1995-07-17 1997-01-23 Mann & Hummel Filter Ventil
EP0780608A1 (fr) * 1995-12-19 1997-06-25 Miyairi, Kazuhiro Vanne papillon
EP0845585A1 (fr) * 1996-12-02 1998-06-03 MAGNETI MARELLI S.p.A. Corps de papillon avec papillon motorisé
EP0869266A1 (fr) * 1995-12-19 1998-10-07 Hitachi, Ltd. Dispositif de commande d'un obturateur d'etranglement pour moteur a combustion interne

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DE1120807B (de) * 1959-03-25 1961-12-28 Maschf Augsburg Nuernberg Ag Brennkraftmaschine mit starker Drehbewegung der Luft um die Zylinderlaengsachse
DE2157629A1 (de) * 1971-11-20 1973-05-24 Paul August Vergaser mit drosselklappe
US4356801A (en) * 1981-02-02 1982-11-02 Chrysler Corporation Throttle body fuel injection
US4827884A (en) * 1987-10-02 1989-05-09 Bendix Electronics Limited Throttle assembly
DE3800087A1 (de) * 1988-01-05 1989-07-13 Vdo Schindling Vorrichtung mit einem kanal fuer einen kraftstoff-luftgemischstrom oder einen luftstrom und mit einer im kanal angeordneten drosselklappe
DE4104010A1 (de) * 1991-02-09 1992-08-13 Bosch Gmbh Robert Drosselklappe
DE4240127C2 (de) * 1992-11-28 1997-04-24 Bosch Gmbh Robert Drosselvorrichtung für eine Brennkraftmaschine und Verfahren zur Herstellung von Dosierwandungen in der Drosselvorrichtung

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3298677A (en) * 1964-04-20 1967-01-17 Champion Spark Plug Co Throttle valve for internal combustion engines
DE2045639A1 (de) * 1969-09-22 1971-04-22 Serck Industries Ltd Drosselklappensteuerventil
US3945398A (en) * 1973-06-29 1976-03-23 Henry Masheder Check valves
US4243000A (en) * 1978-03-15 1981-01-06 Yamaha Hatsukoki Kabushiki Kaisha Induction system of multi-cylinder engine
GB2035516A (en) * 1978-11-03 1980-06-18 Goriziane Spa Off Mec Valve for brake retarder of diesel engines
EP0052534A1 (fr) * 1980-11-19 1982-05-26 Omnibrev Holding Ag Vanne papillon
US4491106A (en) * 1982-11-29 1985-01-01 Morris George Q Throttle configuration achieving high velocity channel at partial opening
JPS62127576A (ja) * 1985-11-28 1987-06-09 Canon Inc 制御バルブ
GB2249348A (en) * 1990-10-31 1992-05-06 Weber Srl I.C. engine throttle valve body
DE19615438A1 (de) * 1995-07-17 1997-01-23 Mann & Hummel Filter Ventil
EP0780608A1 (fr) * 1995-12-19 1997-06-25 Miyairi, Kazuhiro Vanne papillon
EP0869266A1 (fr) * 1995-12-19 1998-10-07 Hitachi, Ltd. Dispositif de commande d'un obturateur d'etranglement pour moteur a combustion interne
EP0845585A1 (fr) * 1996-12-02 1998-06-03 MAGNETI MARELLI S.p.A. Corps de papillon avec papillon motorisé

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
FRIESE: "Der neue 2,0-l-Digifant Einspritzmotor im VW Passat" MTZ MOTORTECHNISCHE ZEITSCHRIFT, Bd. 53, Nr. 3, 1. M{rz 1991 (1991-03-01), Seiten 106-110, XP000207774 -stuttgart *
PATENT ABSTRACTS OF JAPAN vol. 011, no. 348 (M-642), 14. November 1987 (1987-11-14) & JP 62 127576 A (CANON INC), 9. Juni 1987 (1987-06-09) *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004022304A1 (fr) * 2002-09-03 2004-03-18 Siemens Aktiengesellschaft Procede de separation d'une tubulure a papillon
US7416691B2 (en) 2002-09-03 2008-08-26 Siemens Aktiengesellschaft Method for closing off a throttle valve assembly
WO2006056789A2 (fr) * 2004-11-26 2006-06-01 Ricardo Uk Limited Carburateur
WO2006056789A3 (fr) * 2004-11-26 2006-08-03 Ricardo Uk Ltd Carburateur
US7819391B2 (en) 2004-11-26 2010-10-26 Ricardo UK Limted Carburettor
EP1764492B2 (fr) † 2005-09-20 2016-01-27 Mahle International GmbH Système d'alimentation d'air frais pour un moteur à combustion interne
DE102007025177A1 (de) * 2007-05-29 2008-12-04 Mahle International Gmbh Schaltventil

Also Published As

Publication number Publication date
EP1035312A3 (fr) 2001-03-07
DE19909982A1 (de) 2000-09-07
JP2000265860A (ja) 2000-09-26

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