EP1137874B1 - Luftleitung, insbesondere im ansaugtrakt einer brennkraftmaschine - Google Patents
Luftleitung, insbesondere im ansaugtrakt einer brennkraftmaschine Download PDFInfo
- Publication number
- EP1137874B1 EP1137874B1 EP99947393A EP99947393A EP1137874B1 EP 1137874 B1 EP1137874 B1 EP 1137874B1 EP 99947393 A EP99947393 A EP 99947393A EP 99947393 A EP99947393 A EP 99947393A EP 1137874 B1 EP1137874 B1 EP 1137874B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flow
- flow obstacles
- obstacles
- duct
- internal combustion
- 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.)
- Expired - Lifetime
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000005534 acoustic noise Effects 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000011265 semifinished product Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000002730 additional effect Effects 0.000 description 1
- 230000001914 calming effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
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
- F02M29/00—Apparatus for re-atomising condensed fuel or homogenising fuel-air mixture
- F02M29/04—Apparatus for re-atomising condensed fuel or homogenising fuel-air mixture having screens, gratings, baffles 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
- F02D9/1035—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
- 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
-
- 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
- F02M35/1283—Manufacturing or assembly; Connectors; Fixations
-
- 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
- F02D9/107—Manufacturing or mounting details
Definitions
- the invention relates to an air line, particularly suitable for the intake tract an internal combustion engine, which has a device for calming the flow in the Has line cross-section.
- Such devices are e.g. B. from EP 0 863 303 and are in the first Line used to improve the acoustics of intake manifolds.
- the principle of operation of the device is based on the fact that there is turbulence in the flow be smoothed, and in this way in particular a separation of the flow from the pipe walls is avoided. In this way, e.g. B. the whistling sound reduced or avoided that occurs when throttle valves are opened, if they only release a small gap to the pipe wall.
- the Facilities consist, for example, of pipe inserts that go into the interior of the Reach in the suction pipe.
- the acoustic advantage of the inserted pipe inserts is due to the Buy disadvantage that this opposes the flow a resistance, which leads to loss of performance of the engine.
- the power losses contribute to one undesirable increase in the fuel consumption of the internal combustion engine.
- the pipe inserts must be inside the pipe, i.e. on a heavy one accessible place are attached, which takes the manufacturing and assembly effort explained. Casting production is also caused by a complicated one Shaping unwanted additional costs for the acoustic Measure.
- the object of the invention is therefore a device for acoustic optimization In particular to create suction pipes in which the occurring Flow losses are reduced to a minimum, with the manufacturing and assembly costs for the introduction of this device within limits to be held.
- This task is characterized by the characteristics of the Claim 1 solved.
- the air duct according to the invention which in particular in the intake tract Internal combustion engine can be installed, has to calm the flow in the Line cross-section on flow obstacles. However, these are not about the entire cable cross section, but are only on the walls attached to the pipeline. It has been shown that, in particular, to a acoustic optimization of suction pipes only the flow in the Pipe wall area must be calmed.
- the introduction z. B. a wire mesh, which extends over the entire cross-section of the line represents the flow forming inside the pipe cross-section is an unnecessary additional flow obstacle.
- the manufacturing outlay can be kept within limits.
- the the Component forming a flow obstacle can e.g. B. simply in a recording be inserted into the mold intended for the manufacture of the pipe section is integrated. Another possibility is to fix the component in place Flange area of two pipe sections during assembly.
- the flow obstacles can on the entire circumference of the tube wall certain cross-section may be attached or only to parts thereof. Should z. B the Flow separation on the inside of a pipe bend can be reduced, is sufficient it to accommodate the flow obstacles in the corresponding wall part.
- the flow obstacles consist of a strand-like material, e.g. B. wire.
- B. wire This is a cheap semi-finished product too cover and easy to process. He can advantageously in the wall of the Air line are poured.
- other materials are also conceivable z. B. porous materials. Ribs pointing radially into the inside of the pipe can also be used Mold of the tube can be provided. This is especially for Plastic suction pipes conceivable.
- the use of wire-shaped semi-finished products or Comparable materials also have the additional advantage that they become lattices Braids or similar geometries can be processed.
- massive flow obstacles set these in relation to the flow Partial area of the flow cross-section, which they cover, an essential lower flow resistance.
- the flow obstacles are on flows through and not flows around this way, which has an additional effect of Smoothing the flow in the pipe wall area behind the flow obstacles.
- the Flow obstacles poured into a sealing ring, the z. B. in a Flange connection of the raw air line can be introduced. It is Z. B. that Pouring a wire mesh ring conceivable in the spanned by the sealing ring Surface protrudes.
- Throttle valve It is particularly advantageous to avoid the flow obstacles in the outflow area Throttle valve to accommodate. It has been shown that an essential acoustic improvement with low pressure loss can be achieved can, if the flow obstacles only in the crescent-shaped opening areas the switching flap are arranged. This can be done with small opening gaps Prevent whistling noise on the throttle valve. It goes without saying this measure can also be used for throttle valves that do not round Seal cross section. The opening gaps are then not sickle-shaped, but rather have a different geometry.
- a favorable embodiment of the invention provides for the flow obstacles can be integrated directly into the throttle valve module.
- the throttle valve module can be inexpensively manufactured in large quantities as a standardized part and at different places e.g. B. in the intake tract of an internal combustion engine be used.
- the section of an air line is shown, the flange connection 10 has.
- the flanged tubes 11, 12 are made of plastic.
- the flange of the tube 12 is provided with a groove 13 for a sealing ring 14.
- the flange has threaded sleeves 15, which are used to receive Serve screws 16.
- Corresponding holes 17 are in the flange of the tube 11 provided through which the screws 16 are inserted.
- the tube 11 has one assembly-injected throttle valve 18, the flow direction of the Throttle valve is indicated by an arrow.
- the structure of the sealing ring 14 in the installed state can be seen in FIG. 2 remove. It is the annular gap 20 between the end faces of the tubes 11 and 12 recognizable, wherein the annular gap has a gap dimension which leads to a Deformation of the sealing ring 14 leads.
- the outer edge of the wire mesh ring 19 is poured into the sealing ring. To unravel the ends of the grid wires 22 Avoid a ring collar 23 on the inner edge of the wire mesh ring that pinches the wire ends.
- a throttle valve module 24 is shown in FIG.
- the structure of the flange Attachment to a pipe end, not shown, corresponds in structure to that of the Tube 12 from Figure 1.
- the injection molded throttle valve 18 has a shaft 25 to which Flap wings 26 are attached. To drive the shaft 25, this is one-sided the flap module 24 led out.
- the throttle valve is partially open State shown, crescent-shaped valve passages 27 are formed.
- a Flap edge 28 swings directly over wire strings 29 in the area the valve passages 27 are attached as flow obstacles.
- the Wire strings are used during the manufacturing process of the throttle valve module introduced into the wall 21. This can e.g. B. by clamping in the injection mold and then pouring the wire strings happen. Another option is to heat the wire strings and then melt into the finished throttle valve module.
- Figures 4 and 5 represent variants for introduced into the sealing ring 14 Flow obstacles. It is possible to pour pins 30 into the sealing ring. However, these can also be shown in the mold for the ring, so that they molded on the inside. It is also possible to use one Pour zigzag bent wire 31 into the sealing ring 14.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Characterised By The Charging Evacuation (AREA)
- Exhaust Silencers (AREA)
Description
- Figur 1
- den Ausschnitt einer Luftleitung mit einer direkt hinter dem Leitungsflansch angeordneten Drosselklappe, wobei ein mit einem Drahtgitterring ausgestatteter Dichtring als Strömungshindernis zur Anwendung kommt, im Schnitt,
- Figur 2
- das Detail X aus Figur 1, welches den Aufbau des Dichtrings zeigt,
- Figur 3
- Die Aufsicht auf ein Drosselklappenmodul, in weiches Drahtsaiten als Strömungshindernis eingebracht sind und
- Figur 4-5
- alternative Ausgestaltung von Dichtringen mit Strömungshindernissen.
- 10
- Flanschverbindung
- 11
- Rohr
- 12
- Rohr
- 13
- Nut
- 14
- Dichtring
- 15
- Gewindemuffe
- 16
- Schraube
- 17
- Loch
- 18
- Drosselklappe
- 19
- Drahrgitterring
- 20
- Ringspalt
- 21
- Wandung
- 22
- Gitterdraht
- 23
- Ringmanschette
- 24
- Drosselklappenmodul
- 25
- Welle
- 26
- Klappenflügel
- 27
- Klappendurchgang
- 28
- Klappenkante
- 29
- Drahtsaite
- 30
- Stift
- 31
- Draht
Claims (4)
- Luftleitung, insbesondere im Ansaugtrakt einer Brennkraftmaschine, in die Strömungshindemisse (22, 29, 30, 31) zur Beruhigung der Strömung im Leistungsquerschnitt vorgesehen sind, wobei die mit den Strömungshindemissen (22, 29, 30, 31) versehene Querschnittsfläche kleiner ist, als die des Leistungsquerschnittes, wobei diese von einer Wandung (21) der Luftleitung im Bereich einer Rohrverbindung in das Innere des Leistungsquerschnittes ragen, dadurch gekennzeichnet, dass die Strömungshindernisse (22, 29, 30, 31) in einen Dichtring (14) eingegossen oder an ihn angegossen sind, der in die Rohrverbindung eingebracht ist.
- Luftleitung nach Anspruch 1, dadurch gekennzeichnet, dass die Strömungshindernisse (22, 29, 30, 31) aus einem strangförmig ausgebildeten Material, insbesondere Draht, bestehen.
- Luftleitung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Strömungshindernisse (22, 29, 30, 31) hinter einer Drosselklappe (18) im Bereich der durch diese beeinflussten Strömung vorgesehen sind.
- Luftleitung nach Anspruch 3, dadurch gekennzeichnet, dass die Strömungshindernisse (22, 29, 30, 31) im Bereich hinter einem Spalt der durch die um einen kleinen Winkel geöffnete Drosselklappe (18) gebildet ist, angeordnet sind.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19856521A DE19856521A1 (de) | 1998-12-08 | 1998-12-08 | Luftleitung, insbesondere im Ansaugtrakt einer Brennkraftmaschine |
DE19856521 | 1998-12-08 | ||
PCT/EP1999/006975 WO2000034642A1 (de) | 1998-12-08 | 1999-09-21 | Luftleitung, insbesondere im ansaugtrakt einer brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1137874A1 EP1137874A1 (de) | 2001-10-04 |
EP1137874B1 true EP1137874B1 (de) | 2002-11-27 |
Family
ID=7890335
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99947393A Expired - Lifetime EP1137874B1 (de) | 1998-12-08 | 1999-09-21 | Luftleitung, insbesondere im ansaugtrakt einer brennkraftmaschine |
Country Status (6)
Country | Link |
---|---|
US (1) | US20020017275A1 (de) |
EP (1) | EP1137874B1 (de) |
JP (1) | JP4420567B2 (de) |
AT (1) | ATE228613T1 (de) |
DE (2) | DE19856521A1 (de) |
WO (1) | WO2000034642A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19928354A1 (de) * | 1999-06-21 | 2000-12-28 | Mann & Hummel Filter | Leitungssystem mit Drosselklappe |
JP3726672B2 (ja) * | 2000-11-21 | 2005-12-14 | トヨタ自動車株式会社 | 内燃機関の吸気異音低減部材取付構造 |
JP2002295322A (ja) * | 2001-03-28 | 2002-10-09 | Uchiyama Mfg Corp | 吸気通路の吸気音低減装置取付構造 |
DE10308790B4 (de) * | 2003-02-28 | 2009-07-02 | Robert Bosch Gmbh | Drosselklappengehäuse mit strömungsoptimiertem Einlauf |
JP4615463B2 (ja) * | 2006-03-16 | 2011-01-19 | 興国インテック株式会社 | 吸気異音低減装置及びこれを備えた内燃機関、内燃機関の吸気異音低減装置取付構造 |
FR2949644B1 (fr) | 2009-09-09 | 2012-01-13 | Bel Fromageries | Procede de fabrication d'un produit fromager ayant un extrait-sec inferieur ou egal a 50% et comprenant au moins une cereale |
US10267274B2 (en) * | 2014-11-14 | 2019-04-23 | Nok Corporation | Intake noise reduction device |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2257793A1 (en) * | 1974-01-15 | 1975-08-08 | Dupuy Claude | Engine fuel-air mixture mixing device - has turbulence producing projections on ring clamped in mixture line |
DE69805883T2 (de) * | 1997-03-04 | 2003-02-13 | Nippon Soken, Inc. | Vorrichtung zum Verhindern von Durchströmgeräuschen bei Drosselklappen |
US5722357A (en) * | 1997-05-01 | 1998-03-03 | Ford Global Technologies, Inc. | Noise suppression in the intake system of an internal combustion engine |
-
1998
- 1998-12-08 DE DE19856521A patent/DE19856521A1/de not_active Withdrawn
-
1999
- 1999-09-21 DE DE59903602T patent/DE59903602D1/de not_active Expired - Lifetime
- 1999-09-21 WO PCT/EP1999/006975 patent/WO2000034642A1/de active IP Right Grant
- 1999-09-21 EP EP99947393A patent/EP1137874B1/de not_active Expired - Lifetime
- 1999-09-21 AT AT99947393T patent/ATE228613T1/de not_active IP Right Cessation
- 1999-09-21 JP JP2000587066A patent/JP4420567B2/ja not_active Expired - Lifetime
-
2001
- 2001-06-07 US US09/875,291 patent/US20020017275A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
ATE228613T1 (de) | 2002-12-15 |
DE19856521A1 (de) | 2000-06-15 |
JP2002531767A (ja) | 2002-09-24 |
EP1137874A1 (de) | 2001-10-04 |
DE59903602D1 (de) | 2003-01-09 |
WO2000034642A1 (de) | 2000-06-15 |
JP4420567B2 (ja) | 2010-02-24 |
US20020017275A1 (en) | 2002-02-14 |
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