WO1997013976A1 - Intake pipe - Google Patents
Intake pipe Download PDFInfo
- Publication number
- WO1997013976A1 WO1997013976A1 PCT/EP1996/003414 EP9603414W WO9713976A1 WO 1997013976 A1 WO1997013976 A1 WO 1997013976A1 EP 9603414 W EP9603414 W EP 9603414W WO 9713976 A1 WO9713976 A1 WO 9713976A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- intake
- intake pipe
- flow
- pipe according
- noise
- Prior art date
Links
- 238000002485 combustion reaction Methods 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000011161 development Methods 0.000 description 7
- 230000018109 developmental process Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 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
- 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.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96927663A EP0864042A1 (en) | 1995-10-06 | 1996-08-02 | Intake pipe |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1995137269 DE19537269B4 (en) | 1995-10-06 | 1995-10-06 | suction tube |
DE19537269.7 | 1995-10-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997013976A1 true WO1997013976A1 (en) | 1997-04-17 |
Family
ID=7774203
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1996/003414 WO1997013976A1 (en) | 1995-10-06 | 1996-08-02 | Intake pipe |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0864042A1 (en) |
DE (1) | DE19537269B4 (en) |
WO (1) | WO1997013976A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19721427A1 (en) | 1997-05-22 | 1998-11-26 | Mann & Hummel Filter | Sieve element |
DE19750102A1 (en) | 1997-11-12 | 1999-06-02 | Stankiewicz Gmbh | Gas-flowed line with sound absorption effect |
DE102009015814B4 (en) | 2009-04-01 | 2011-02-10 | Actech Gmbh | Device for guiding air in a suction system |
US9506432B2 (en) * | 2013-07-09 | 2016-11-29 | Nok Corporation | Sealing device |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2171228A1 (en) * | 1972-02-07 | 1973-09-21 | Daimler Benz Ag | |
DE2650364A1 (en) * | 1976-11-03 | 1978-05-11 | Leistritz Hans Karl | Ceramic insert plate in exhaust of other silencer - has part perforated by narrow ducts and solid part facing entry orifice in enclosure |
FR2393162A1 (en) * | 1977-06-03 | 1978-12-29 | Carecon Int Ltd | Fuel economy device for IC engine - has passage from carburettor to intake pipe, with feedback of air-fuel mixture from intake pipe to passage |
EP0013185A1 (en) * | 1978-12-29 | 1980-07-09 | Edward E. Johnson | Intake manifold fuel atomizing screen |
FR2536792A1 (en) * | 1982-11-29 | 1984-06-01 | Peugeot | Intake circuit for an internal combustion engine fitted with an intake noise attenuation device |
JPS6093123A (en) * | 1983-10-27 | 1985-05-24 | Nissan Motor Co Ltd | Intake device of internal-combustion engine |
JPS63263215A (en) * | 1987-04-21 | 1988-10-31 | Yanmar Diesel Engine Co Ltd | Intake silencer for internal combustion engine |
GB2287752A (en) * | 1994-03-19 | 1995-09-27 | Ford Motor Co | Gas flow silencer |
DE29511979U1 (en) * | 1995-07-25 | 1995-09-28 | Stihl Maschf Andreas | Silencer in a pipe |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3374673A (en) * | 1965-10-01 | 1968-03-26 | Technology Inc | Mass flowmeter structure |
DE2263956C2 (en) * | 1972-12-29 | 1982-09-09 | Gulde-Regelarmaturen-Kg, 6700 Ludwigshafen | Device for reducing the sound of a pipe provided with a throttle device and through which gases flow |
DE3226453A1 (en) * | 1982-07-15 | 1984-01-19 | Arca Regler GmbH, 4154 Tönisvorst | Butterfly throttle valve |
JPS6050265A (en) * | 1983-08-31 | 1985-03-19 | Nissan Motor Co Ltd | Device for reducing intake noise of automobile |
FI71983C (en) * | 1985-01-09 | 1987-03-09 | Neles Oy | VENTIL. |
IT8521303V0 (en) * | 1985-04-02 | 1985-04-02 | Alfa Romeo Spa | PULSATION ABSORBER FOR THE SUPPLY MANIFOLD OF A C.I. ENGINE |
DE4402048A1 (en) * | 1994-01-25 | 1995-07-27 | Mann & Hummel Filter | Integrated suction system |
-
1995
- 1995-10-06 DE DE1995137269 patent/DE19537269B4/en not_active Expired - Lifetime
-
1996
- 1996-08-02 EP EP96927663A patent/EP0864042A1/en not_active Withdrawn
- 1996-08-02 WO PCT/EP1996/003414 patent/WO1997013976A1/en not_active Application Discontinuation
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2171228A1 (en) * | 1972-02-07 | 1973-09-21 | Daimler Benz Ag | |
DE2650364A1 (en) * | 1976-11-03 | 1978-05-11 | Leistritz Hans Karl | Ceramic insert plate in exhaust of other silencer - has part perforated by narrow ducts and solid part facing entry orifice in enclosure |
FR2393162A1 (en) * | 1977-06-03 | 1978-12-29 | Carecon Int Ltd | Fuel economy device for IC engine - has passage from carburettor to intake pipe, with feedback of air-fuel mixture from intake pipe to passage |
EP0013185A1 (en) * | 1978-12-29 | 1980-07-09 | Edward E. Johnson | Intake manifold fuel atomizing screen |
FR2536792A1 (en) * | 1982-11-29 | 1984-06-01 | Peugeot | Intake circuit for an internal combustion engine fitted with an intake noise attenuation device |
JPS6093123A (en) * | 1983-10-27 | 1985-05-24 | Nissan Motor Co Ltd | Intake device of internal-combustion engine |
JPS63263215A (en) * | 1987-04-21 | 1988-10-31 | Yanmar Diesel Engine Co Ltd | Intake silencer for internal combustion engine |
GB2287752A (en) * | 1994-03-19 | 1995-09-27 | Ford Motor Co | Gas flow silencer |
DE29511979U1 (en) * | 1995-07-25 | 1995-09-28 | Stihl Maschf Andreas | Silencer in a pipe |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 13, no. 55 (M - 795) 8 February 1989 (1989-02-08) * |
PATENT ABSTRACTS OF JAPAN vol. 9, no. 238 (M - 416) 25 September 1985 (1985-09-25) * |
Also Published As
Publication number | Publication date |
---|---|
DE19537269A1 (en) | 1997-04-10 |
EP0864042A1 (en) | 1998-09-16 |
DE19537269B4 (en) | 2006-10-26 |
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