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EP0864042A1 - Tubulure d'admission - Google Patents

Tubulure d'admission

Info

Publication number
EP0864042A1
EP0864042A1 EP96927663A EP96927663A EP0864042A1 EP 0864042 A1 EP0864042 A1 EP 0864042A1 EP 96927663 A EP96927663 A EP 96927663A EP 96927663 A EP96927663 A EP 96927663A EP 0864042 A1 EP0864042 A1 EP 0864042A1
Authority
EP
European Patent Office
Prior art keywords
intake
intake pipe
flow
pipe according
noise
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Withdrawn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
EP96927663A
Other languages
German (de)
English (en)
Inventor
Helmut Spannbauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mann and Hummel GmbH
Original Assignee
Filterwerk Mann and Hummel GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Filterwerk Mann and Hummel GmbH filed Critical Filterwerk Mann and Hummel GmbH
Publication of EP0864042A1 publication Critical patent/EP0864042A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • 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
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1205—Flow throttling or guiding
    • F02M35/1211—Flow throttling or guiding by using inserts in the air intake flow path, e.g. baffles, throttles or orifices; Flow guides
    • 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
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1205—Flow throttling or guiding
    • F02M35/1216—Flow throttling or guiding by using a plurality of holes, slits, protrusions, perforations, ribs or the like; Surface structures; Turbulence generators

Definitions

  • the invention relates to an intake manifold, particularly in the intake tract of internal combustion engines.
  • Suction pipes of this type are known, for example in internal combustion engines that are used in racing. If you want to use such suction pipes, for example for noise-reduced use, it is disadvantageous that, for example, the opposite effect arises due to the short suction pipe length
  • the characteristic data of the flow such as flow rate, distribution of the flow rate in and perpendicular to the jet direction, length and shape, are essentially a function of the pressure ratio between the two volumes and the geometric shape of the nozzle contour.
  • the intake manifold in the intake cross-section has an element that reduces its intake noise.
  • This component in the intake cross-section enables the flow conditions in the intake manifold to be adapted to the respective operating state of the internal combustion engine. This effectively reduces the flow velocity in cross-section restricted and the dissipation of the current energy required
  • the element is a flow rectifier.
  • This flow rectifier prevents the flow in the intake manifold from becoming detached, which proves to be advantageous in terms of noise.
  • this flow rectifier causes an inevitable pressure loss to equalize different flow velocities in the pipe
  • the element is perforated. This has the effect that the throughput is reduced by the flow resistance and thus the jet speed decreases, which is accompanied by a reduction in noise
  • the element is hemispherical.
  • the advantage with this dome-shaped element lies in the enlargement of the effective area, in particular the exit area.
  • the jet velocity is simultaneously reduced via the flow resistance, which both leads to a reduction in noise
  • the element is designed as a sudden expansion, so that a sudden change in the clear cross-section takes place in the course of the channel guidance. Reflections and higher modes occur in this jump plane, which leads to a reduction in noise
  • the element is a porous ceramic element. By using this porous ceramic element, the effective outlet area is increased, which results in a reduction in noise
  • the element is a grille or a sieve.
  • the use of a grille or a sieve leads to a loss of pressure and to an increase in the outlet area, which leads to a reduction in noise
  • the element is made of metal and / or plastic.
  • the advantage of this variant is that the element can be adapted to the suction pipe material surrounding it. In the case of disposal, it is then a pure suction pipe.
  • Another advantage of the element made of metal is that it can take on additional insulation properties due to the higher mass, the element made of plastic is light and cheap
  • the mesh size of the element is in the range from 1 to 4 mm.
  • the area responsible for the noise-reducing effect is just between 1 and 4 mm mesh size
  • the screen or grid wire diameter is in the range between 0.2 and 1.5 mm.
  • the element is attached after at least one flow stopping point.
  • Storing points are the cause of flowing currents, which leads to noise developments. It is sensible to install such noise-reducing element after such stopping points.
  • Such stopping points are essentially curvatures, throttle valves and others parts protruding into the pipe cross-section
  • FIG. 1 shows a complete suction pipe
  • FIG. 2 shows an embodiment of an element
  • FIG. 4 shows a section through the intake manifold, the dome-shaped element arranged after the throttle valve being arranged
  • FIG. 5 shows an element designed as a sudden expansion
  • Figure 6 shows a disc-shaped element in section
  • the intake manifold 1 shown consists of a body made using half-shell technology, which essentially comprises the elements shown in FIG. 1.
  • these were the motor-side flange 5, by means of which the intake manifold 1 is fastened directly to the intake side of an internal combustion engine (not shown) by means of fastening sockets 17
  • the idle control housing 10 Above the flange 5 is the idle control housing 10, in which the idle control is also not described in more detail.
  • individual pipes 9 run in a common collecting space 6, which has a vacuum connection 19 for control purposes, unite
  • the element 2 In or above the plenum 6, the element 2 is located perpendicular to the main flow.
  • the throttle valve 7 which is located in the throttle valve housing 14.
  • the throttle valve housing 14 is connected to the plenum chamber by means of connecting screws 15 Intake manifold attached
  • a mounting bracket 16 Also in this area around the throttle valve housing is a mounting bracket 16, with the aid of which the entire device is fastened in the engine compartment of the internal combustion engine, not shown.
  • a temperature sensor 12 Above the throttle valve housing is a temperature sensor 12, which communicates with a control device, not described in more detail
  • the element 2 could also be attached directly after another point of the flow, e.g. a curvature.
  • the throttle valve is actuated via the throttle valve control 4.
  • the connecting element 8 does not follow the flow direction described and illustrated air filter.
  • the connecting element 8 has a crankcase connection 11, which communicates with the Kurbeigehause by means of a connecting element not described in detail
  • a dome-shaped element 2 which can also be called a sieve, is integrated between the throttle valve and the collecting space of the engine intake manifold 1.
  • the grid-like structure of the sieve reduces turbulence occurring after the throttle valve, it acts as a flow straightener
  • element 2 could also be attached to another location in the flow pattern. If the geometry of the intake manifold allows it, the noise-reducing element is preferably attached after all the locations in the flow pattern
  • the element 2 ensures a noticeable reduction in noise.
  • the element 2 is installed in the intake manifold 1, perpendicular to the direction of flow.
  • the element made of metal wire, whose diameter range is between 0.2 and 1.5 mm, has a mesh area that is expediently between 1 and 4 mm hegen.
  • the representation in Figure 3 a, b shows the seal 3 applied to the circumference of the element 2, which preferably consists of an elastomer.
  • the screen mesh 20 used which in this exemplary embodiment consists of steel mesh
  • FIGS. 3 a and 3 b show different configurations of the seal 3 on the element 2, the variant in FIG. 3 a being higher and more bulky than the somewhat flatter design in FIG. 3 b
  • FIG. 4 shows a special exemplary embodiment in which the element 2 is attached directly after the throttle valve 7, both elements being accommodated in the throttle valve housing 14. Another embodiment of the element 2 is shown in FIG. 5.
  • element 2 is designed as a sudden expansion, the walls of element 2 shown hatched in FIG. 5 being able to be provided with additional, sound-absorbing materials.
  • Figure 6 shows a disc-shaped element 2, which can be designed as a grid.
  • the element 2 could consist of, for example, sintered material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Characterised By The Charging Evacuation (AREA)
  • Exhaust Silencers (AREA)

Abstract

Tubulure d'admission, en particulier dans le tronçon d'admission de moteurs à combustion interne, ladite tubulure d'admission (1) présentant, dans sa section transversale d'aspiration, un élément (2) atténuant les bruits d'aspiration.
EP96927663A 1995-10-06 1996-08-02 Tubulure d'admission Withdrawn EP0864042A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19537269 1995-10-06
DE1995137269 DE19537269B4 (de) 1995-10-06 1995-10-06 Saugrohr
PCT/EP1996/003414 WO1997013976A1 (fr) 1995-10-06 1996-08-02 Tubulure d'admission

Publications (1)

Publication Number Publication Date
EP0864042A1 true EP0864042A1 (fr) 1998-09-16

Family

ID=7774203

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96927663A Withdrawn EP0864042A1 (fr) 1995-10-06 1996-08-02 Tubulure d'admission

Country Status (3)

Country Link
EP (1) EP0864042A1 (fr)
DE (1) DE19537269B4 (fr)
WO (1) WO1997013976A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19721427A1 (de) * 1997-05-22 1998-11-26 Mann & Hummel Filter Siebelement
DE19750102A1 (de) 1997-11-12 1999-06-02 Stankiewicz Gmbh Gasdurchströmte Leitung mit Schallabsorptionswirkung
DE102009015814B4 (de) 2009-04-01 2011-02-10 Actech Gmbh Vorrichtung zur Luftführung in einem Saugsystem
WO2015005007A1 (fr) * 2013-07-09 2015-01-15 Nok株式会社 Dispositif de scellage

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3374673A (en) * 1965-10-01 1968-03-26 Technology Inc Mass flowmeter structure
DE2205688A1 (de) * 1972-02-07 1973-08-16 Daimler Benz Ag Ansaugsystem fuer brennkraftmaschinen
DE2263956C2 (de) * 1972-12-29 1982-09-09 Gulde-Regelarmaturen-Kg, 6700 Ludwigshafen Vorrichtung zur Verminderung des Schalles einer mit einem Drosselgerät versehenen, von Gasen durchströmten Leitung
DE2650364A1 (de) * 1976-11-03 1978-05-11 Leistritz Hans Karl Keramikplatte mit partieller feinstkanalzone als einsatzteil fuer luftdurchsatzgruppen
SE7806350L (sv) * 1977-06-03 1978-12-04 Carecon Int Ltd Brensleekonomianordning
EP0013185A1 (fr) * 1978-12-29 1980-07-09 Edward E. Johnson Dispositif d'homogénéisation du mélange air-carburant alimentant les chambres de combustion d'un moteur à explosion
DE3226453C2 (de) * 1982-07-15 1987-04-23 Arca Regler GmbH, 4154 Tönisvorst Drosselklappenventil
FR2536792B1 (fr) * 1982-11-29 1987-03-20 Peugeot Circuit d'admission pour moteur a combustion interne equipe d'un dispositif d'attenuation du bruit d'admission
JPS6050265A (ja) * 1983-08-31 1985-03-19 Nissan Motor Co Ltd 自動車の吸気騒音低減装置
JPS6093123A (ja) * 1983-10-27 1985-05-24 Nissan Motor Co Ltd 内燃機関の吸気装置
FI71983C (fi) * 1985-01-09 1987-03-09 Neles Oy Ventil.
IT8521303U1 (it) * 1985-04-02 1986-10-02 Alfa Romeo Spa Assorbitore di pulsazioni per il collettore di alimentazione di un motore a c.i.
JPS63263215A (ja) * 1987-04-21 1988-10-31 Yanmar Diesel Engine Co Ltd 内燃機関の吸気消音装置
DE4402048A1 (de) * 1994-01-25 1995-07-27 Mann & Hummel Filter Integriertes Ansaugsystem
GB2287752A (en) * 1994-03-19 1995-09-27 Ford Motor Co Gas flow silencer
DE29511979U1 (de) * 1995-07-25 1995-09-28 Fa. Andreas Stihl, 71336 Waiblingen Schalldämpfer in einem Rohr

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9713976A1 *

Also Published As

Publication number Publication date
WO1997013976A1 (fr) 1997-04-17
DE19537269B4 (de) 2006-10-26
DE19537269A1 (de) 1997-04-10

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Legal Events

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