EP1137874A1 - Luftleitung, insbesondere im ansaugtrakt einer brennkraftmaschine - Google Patents
Luftleitung, insbesondere im ansaugtrakt einer brennkraftmaschineInfo
- Publication number
- EP1137874A1 EP1137874A1 EP99947393A EP99947393A EP1137874A1 EP 1137874 A1 EP1137874 A1 EP 1137874A1 EP 99947393 A EP99947393 A EP 99947393A EP 99947393 A EP99947393 A EP 99947393A EP 1137874 A1 EP1137874 A1 EP 1137874A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flow
- flow obstacles
- air line
- obstacles
- duct
- 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.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 18
- 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
- 238000009499 grossing Methods 0.000 description 2
- 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
- 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
- 238000009434 installation Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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
- Air line especially in the intake tract of an internal combustion engine
- the invention relates to an air line, particularly suitable for the intake tract of an internal combustion engine, which has a device for calming the flow in the line cross section
- Devices of this type are known, for example, from EP 863 303 and are primarily used to improve the acoustics of suction pipes.
- the functional principle of the device is based on smoothing out turbulence in the flow, and in this way in particular detaching the flow from the pipe walls In this way, for example, the whistling noise that occurs when throttle valves are opened when they only open a small gap to the pipe wall can be reduced or avoided.
- the devices consist, for example, of pipe inserts that extend into the interior of the intake pipe
- the acoustic advantage of the inserted pipe inserts is, however, paid for by the disadvantage that this opposes the flow to a resistance, which leads to engine power losses.
- the power losses contribute to an undesirable increase in the fuel consumption of the internal combustion engine be attached to a difficult to access location, which explains the manufacturing and assembly costs.
- a casting-technical production causes unwanted additional costs for the above-mentioned acoustic measure due to a complicated shape
- the object of the invention is therefore to provide a device for acoustic optimization, in particular of intake manifolds, in which the flow losses which occur are reduced to a minimum, the manufacturing and assembly outlay for introducing this device being kept within limits. This object is solved by the features of claim 1.
- the air line according to the invention which can be installed in particular in the intake tract of an internal combustion engine, has flow obstacles to calm the flow in the line cross section. However, these are not distributed over the entire pipe cross-section, but are only attached to the walls of the pipe. It has been shown that, in particular for acoustic optimization of suction pipes, only the flow in the pipe wall area has to be calmed down.
- the manufacturing outlay can be kept within limits.
- the component forming the flow obstacle can e.g. B. simply be inserted into a receptacle which is integrated in the mold intended for the manufacture of the pipe section. Another possibility is to fix the component in the flange area of two pipe sections during assembly.
- the flow obstacles can be attached to the entire circumference of the tube wall of a certain cross section or only to parts thereof. Should z. B the flow separation on the inside of a pipe bend can be reduced, it suffices to accommodate the flow obstacles in the corresponding wall part.
- the flow obstacles consist of a strand-like material, e.g. B. wire. This is available as a cheap semi-finished product and is easy to process. It can advantageously be poured into the wall of the air line.
- other materials are also conceivable, e.g. B. porous materials.
- Ribs pointing radially into the pipe interior can also be provided in the casting mold of the pipe. This is particularly conceivable for plastic suction pipes.
- wire-shaped semi-finished products or comparable materials has the additional advantage that they can be processed into meshes or similar geometries. In comparison to massive flow obstacles, these counter the flow with respect to the partial area of the flow cross-section that they cover, a significantly lower flow resistance. The flow obstacles are thus flowed through and not flowed around, which has an additional effect of smoothing the flow in the pipe wall area behind the flow obstacles.
- the flow obstacles are poured into a sealing ring which, for. B. can be introduced into a flange connection of the raw air line. It is Z. B. pouring a wire mesh ring conceivable, which protrudes into the area spanned by the sealing ring.
- Figure 1 shows the detail of an air line with a directly behind the
- Throttle valve arranged in the line flange, with a sealing ring equipped with a wire mesh ring being used as a flow obstacle, on average,
- FIG. 2 shows the detail X from FIG. 1, which shows the structure of the sealing ring
- FIG. 3 The supervision of a throttle valve module, in which wire strings as
- Figure 4-5 alternative design of sealing rings with flow obstacles.
- FIG. 1 the section of an air line is shown, which has a flange 10.
- the flanged tubes 11, 12 are made of plastic.
- a groove 13 for a sealing ring 14 is provided in the flange of the tube 12.
- the flange has threaded sockets 15, which serve to receive screws 16.
- Corresponding holes 17 are provided in the flange of the tube 11, through which the screws 16 are inserted.
- the tube 11 has an injection-molded throttle valve 18, the direction of flow of the throttle valve being indicated by an arrow.
- a throttle valve module 24 is shown in FIG.
- the structure of the flange for fastening to a pipe end, not shown, corresponds in structure to that of the pipe 12 from FIG. 1.
- the threaded sleeve 15 and the groove 13 can be seen.
- the injection molded throttle valve 18 has a shaft 25 to which the valve flaps 26 are attached. To drive the shaft 25, it is guided out of the flap module 24 on one side.
- the throttle valve is shown in a partially open state, crescent-shaped valve passages 27 being formed.
- a flap edge 28 swings directly over wire strings 29, which are attached in the area of the flap passages 27 as flow obstacles.
- the Wire strings are introduced into the wall 21 during the manufacturing process of the throttle valve module. This can e.g. B. done by clamping in the injection mold and then pouring the wire strings. Another option is to heat the wire strings and then melt them into the finished throttle valve module.
- FIGS. 4 and 5 represent variants for flow obstacles introduced in the sealing ring 14. It is possible to cast pins 30 into the sealing ring. However, these can also be shown in the mold for the ring, so that they are molded onto the inside thereof. It is also possible to pour a 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
Claims
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 true EP1137874A1 (de) | 2001-10-04 |
EP1137874B1 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
Non-Patent Citations (1)
Title |
---|
See references of WO0034642A1 * |
Also Published As
Publication number | Publication date |
---|---|
ATE228613T1 (de) | 2002-12-15 |
DE19856521A1 (de) | 2000-06-15 |
EP1137874B1 (de) | 2002-11-27 |
JP2002531767A (ja) | 2002-09-24 |
DE59903602D1 (de) | 2003-01-09 |
WO2000034642A1 (de) | 2000-06-15 |
JP4420567B2 (ja) | 2010-02-24 |
US20020017275A1 (en) | 2002-02-14 |
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