CN100394018C - Low noise air inlet pipe with throttle - Google Patents
Low noise air inlet pipe with throttle Download PDFInfo
- Publication number
- CN100394018C CN100394018C CNB2005100672090A CN200510067209A CN100394018C CN 100394018 C CN100394018 C CN 100394018C CN B2005100672090 A CNB2005100672090 A CN B2005100672090A CN 200510067209 A CN200510067209 A CN 200510067209A CN 100394018 C CN100394018 C CN 100394018C
- Authority
- CN
- China
- Prior art keywords
- valve block
- suction tude
- valve
- described suction
- throttle valve
- 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 - Fee Related
Links
- 238000003780 insertion Methods 0.000 claims description 11
- 230000037431 insertion Effects 0.000 claims description 11
- 230000008676 import Effects 0.000 claims description 3
- 238000005267 amalgamation Methods 0.000 claims description 2
- 230000002708 enhancing effect Effects 0.000 description 7
- 230000002349 favourable effect Effects 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 238000001914 filtration Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 230000014509 gene expression Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000013316 zoning 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
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
- F02M35/10308—Equalizing conduits, e.g. between intake ducts or between plenum chambers
-
- 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
- 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
- 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
- F02M35/10—Air intakes; Induction systems
- F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
- F02M35/10262—Flow guides, obstructions, deflectors or the like
-
- 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
- F02M35/10—Air intakes; Induction systems
- F02M35/10314—Materials for intake systems
- F02M35/10321—Plastics; Composites; Rubbers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- 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)
- Characterised By The Charging Evacuation (AREA)
Abstract
The invention provides a low noise intake pipe with throttle, wherein at least one of thin plates is provided on an inner wall of the intake pipe and the thin plates is arranged in a rear on a downstream side of a throttle valve.
Description
Technical field
The present invention relates to a kind of low noise air inlet pipe that has throttle valve.
Background technique
In service or in the lower part load condition, throttle valve is in almost closing state in the work of sliding of internal-combustion engine.In this state, the orientation angle of throttle valve is 20 ° to the maximum.In this running state, there is a very big negative pressure (being lower than 800 millibars) in the suction tude.Because throttle valve is not to cut out fully, so just there is a gap between the inwall of this throttle valve and suction tude.During this time on the crack, because very high negative pressure is arranged, thereby cause high air velocity, cause to observe to be right after to produce strong eddy current in the throttle valve back from following current.Possiblely in the case be: the vortex in the suction tude goes downstream, thereby produces high-frequency noise (about 50Hz to 5000kHz).Under the situation that adopts the plastic inlet pipe because the density of plastics is little, so this noise can vibe with the wall of plastic inlet pipe, thereby improve noise level greatly.
Above-mentioned reso-nance problems is known in the vaporizer of automobile for example.Take place in order to reduce noise, past attempts is settled the metal filtration sieve in suction tude, and this known metal filtration sieve has a special shortcoming: relate to a kind of additional parts here, must assemble.For this additional metallic screen, must increase assembly fee and use and manufacture cost.
Summary of the invention
Task of the present invention provides the suction tude of a kind of low noise, low wearing and tearing, cost economy.Task of the present invention is to solve by the low noise air inlet pipe that has a throttle valve, at least one valve block is wherein arranged on the inwall of suction tude, be placed in to described valve block following current the throttle valve back, the form towards the seamed edge of throttle valve of described valve block, making between the seamed edge in this seamed edge and throttle valve downstream has a constant distance.
The low noise air inlet pipe that has throttle valve that the present invention proposes has at least one valve block, is placed on the inwall of suction tude.Wherein, this valve block be following current be placed in the throttle valve back.Its advantage is: vortex is obstructed and reduces, thereby makes the pressure reduction in flowing become less.This just impels interfering frequency to shift to higher frequency, and these frequencies are in outside the rotating speed band that can arrive by electrical motors.The plastic inlet pipe can create in the operation of casting together together with valve block.
A favourable design proposal of the present invention is: the valve block of settling a plurality of side by side and parallel to each other and/or equidistant placement in suction tude.The size that eddy current forms is relevant with valve block spacing each other.Valve block spacing each other is more little, and then the possibility of vortex formation is just more little.At this, unique what need accomplish is that valve block is formed on the inwall of suction tude with their one of seamed edge, also these valve blocks must be distributed in simultaneously on the shell portion (suction tude section) of suction tude.
Another favourable technological scheme of the present invention is: valve block be streamwise rectangular, be design trapezoidal or triangular in shape.The track of the envelope of vortex forms for the valve block shape basically.A kind of like this envelope can not have the suction tude of valve block to be determined by for example schlieren optics instrument utilization.Therefore, can make location, shaping and the size specification of valve block realize optimization at the specific dimensions of corresponding suction tude.
Another favourable scheme of the present invention is: the seamed edge towards throttle valve of valve block is so to be shaped, and makes to have a distance between the seamed edge of the downstream of these seamed edges and throttle valve.This distance should be selected minimum stable with maintenance according to manufacturing process.This point for example can reach by following measure: valve block towards the radius that seamed edge had of throttle valve seamed edge greater than throttle valve, wherein, the midpoint of radius is in the running shaft of throttle valve.Its advantage is: the suction air that flows by above-mentioned spacing is being conducted through valve block immediately through after the throttle valve.This has just reduced eddy current and has formed danger.
Valve block can be parallel to and/or be located perpendicular to the running shaft of throttle valve.Parallel location can reduce the size of total eddy current.Vertical location can reduce the width of eddy current.Can consider valve block any other position, angle to the running shaft of throttle valve.
Another favourable technological scheme of the present invention is: each other side by side and the enhancing bridge jumper perpendicular to commutator that is shaped at least between the valve block that is arranged parallel to each other.The length (streamwise) of this bridge jumper institute tool can be identical with the length of valve block.In addition, this bridge jumper can be joined to one another several valve blocks.This enhancing bridge jumper is preferably arranged perpendicular to these valve blocks.This bridge jumper can be avoided the vibration of commutator.In addition, can make the suction air that flows through throttle valve be laminar flow ground by some enhancing bridge jumpers continues to be guided.
Another favourable technological scheme of the present invention is: suction tude is by two-piece design.Wherein, suction tude comprises first section and one second section of having valve block that has throttle valve.Second section has one first district and one second district.These two districts form two watts of shape half ones, and this two watts of shapes, half one just forms a suction tude through amalgamation (for example by welding).In this two watts of shapes, half one each can have the valve block of one group of layout parallel to each other.This point has following advantage at manufacture view: two watts of shape half ones can water foundry goods by one together with valve block and make.Wherein, stripping direction can be selected vertical with flow direction.Stripping direction but, exists the enhancing bridge jumper, so also just can only be realized in flow direction with valve block.
Because the demoulding of valve block can not can not be implemented by streamwise dividing by mould, so favourable way is: with the insertion parts that has valve block on its that is shaped separately perpendicular to flow direction be incorporated in the suction tude.This insertion parts also can be used to import gas or has a negative pressure connecting head.
Description of drawings
Below with reference to accompanying drawings with example explanation the present invention.Accompanying drawing is represented:
Fig. 1 suction tude forms eddy current together with not with the sectional arrangement drawing of the throttle valve of valve block;
Fig. 2 A, B suction tude sectional arrangement drawing have difformity and big or small valve block and throttle valve;
The cross-section profile of the suction tude of Fig. 3 A, B streamwise has valve block in the zoning at an upper portion thereof;
The cross-section profile of Fig. 4 A, B suction tude has valve block in zone, its underpart;
The cross-section profile of Fig. 5 suction tude has an insertion parts that possesses valve block.
Embodiment
Fig. 1 illustrates the sectional arrangement drawing of suction tude 1 together with throttle valve 2.Throttle valve 2 is associated on the running shaft 3 with its position placed in the middle hinge, and this running shaft extends perpendicular to plan.The seamed edge 4 of throttle valve 2 and 5 and the inwall 6 of suction tude 1 form a gap 7.Air flows from left to right, and wherein, flow direction is with arrow 8 expressions.As can be seen from Figure, throttle valve 2 does not cut out fully, makes institute's inhaled air can be from the gap 7 flow through.Be right after after seamed edge 5, air is eddy generation (with arrow 9 expressions).The expansion of the eddy current of throttle valve 2 back is represented with envelope 10 (envelope is drawn with dotted line).
The suction tude 1 that Fig. 2 A and 2B represent essentially horizontally to extend with sectional arrangement drawing equally is together with valve block, and wherein, these two figure have different valve block shapes.Can see in these two figure: suction tude 1 is split up into one first section 11 and one second section 12.This situation of reflection is left side (first section) and right-hand part (second section) among the figure, and wherein, suction tude 1 can have a weld seam at tangent plane IIIA-IIIA.One first district 14 (top reflected) in the drawings and one second district 13 (being reflected below on the figure) are arranged for second section 12.Splicing realizes at weld seam 15 places in the shaping in these two districts 13 and 14.To its shaping most important be: at the weld seam 15 on second section of suction tude is to stop below the horizontally extending inwall of suction tude.Like this, just can make two districts perpendicular to flow direction 8 demouldings.
In the superincumbent district 14, formed first group of parallel valve block.It is trapezoidal that these valve blocks are basically.In the district 13 below, formed second group of valve block.These valve blocks of below design greatly than the valve block of top.In addition, these two groups of valve blocks are arranged superposed.The shaping of the left seamed edge of second group of valve block 17 can be rotated non-contiguously through seamed edge 17 the downstream seamed edge 5 of throttle valve 2.This point can realize by following measure: seamed edge 18 has a radius R, and its mid point is in the running shaft 3 of throttle valve.Throttle valve has a radius r, and this radius is less than radius R.Therefore, the seamed edge 5 of throttle valve 2 always keeps constant distance 19 with the seamed edge 18 of second group of valve block 17.Express the maximum required expansion of these valve blocks at the valve block of first group shown in Fig. 2 A and second group.On the contrary, in Fig. 2 B, then express the minimal expansion of first group and second group of valve block 16a and 17a.These valve blocks 16a and 17a are rectangular basically.Be that the valve block of first group valve block and second group is misplaced with different shown in Fig. 2 A.
The cross-section profile of Fig. 3 and 4 expression suction tude 1 is together with first group of valve block 16,16a and second level valve block 17,17a.Wherein, flow direction stretches perpendicular to plan, that is to say, front view is that streamwise illustrates.Fig. 3 A represents to be in first group of valve block in top district, is not with contact pin (strengthening bridge jumper 20).Fig. 4 A represents second group of valve block 17,17a district below, is not with the enhancing bridge jumper.For fear of the natural vibration of valve block, can select the thickness of valve block, make valve block can not be subjected to the suction air impulsion of being flow through.In addition, also can be shown in Fig. 3 B and Fig. 4 B, enhancing bridge jumper 20 is shaped between first group and second group of valve block.These strengthen bridge jumpers 20 and are perpendicular to basically that valve block 16,17 is shaped.Wherein, they only arrive that two outer valve blocks.Also it is contemplated that to make to strengthen that bridge jumper reaches and the inwall 6 of suction tude 1, and be formed in this place.
An insertion parts 30 has been introduced in the transverse section of suction tude shown in Fig. 5 in this suction tude.This insertion parts has valve block 17,17a and enhancing bridge jumper 20.This insertion parts 30 refers to such optional feature, and it can be incorporated in the aperture 33 of suction tude 1 perpendicular to the flow direction that sucks air.In order to reach the sealing of suction tude, between insertion parts 30 and suction tude 1, add and put a Sealing 32.In addition, insertion parts can also have a joint 31 and/or a negative pressure joint 31 that is used to import gas.
What the low noise air inlet pipe (preferably made of plastic) that the present invention proposes was different with employing metal filtration sieve is that it can not corrode.In addition, the valve block that is comprised in wherein can not drop from suction tude, otherwise may cause motor impaired.With regard to the aspect that freezes, to compare with the metal filtration sieve, these valve blocks are insensitive at all, so be easy in addition cleaning.
Claims (13)
1. have the low noise air inlet pipe (1) of a throttle valve (2), it is characterized in that: on the inwall (6) of suction tude (1), at least one valve block (16,17 is arranged; 16a, 17a), wherein, described valve block (16,17; 16a 17a) is placed in to following current throttle valve (3) back, the form of the seamed edge towards throttle valve of described valve block (17) (18), and making between the seamed edge (5) in this seamed edge (18) and throttle valve (2) downstream has a constant distance.
2. by the described suction tude of claim 1, it is characterized in that: suction tude (1) has a plurality of valve blocks (16,17; 16a, 17a), described valve block is arranged abreast each other and is parallel to each other or arrange equidistantly.
3. by the described suction tude of claim 2, it is characterized in that: when described valve block (16,17; 16a, 17a) each other side by side and when being arranged parallel to each other, described valve block is arranged on the same cylindrical portions may (13,14) of suction tude.
4. by any described suction tude among the claim 1-3, it is characterized in that: valve block (16,17; 16a, 17a) streamwise is rectangular, trapezoidal or leg-of-mutton.
5. by any described suction tude among the claim 1-3, it is characterized in that: valve block (16,17; 16a is to be parallel to or perpendicular to the running shaft of throttle valve location 17a).
6. by claim 2 or 3 described suction tude, it is characterized in that: each other side by side and be shaped at least between the valve block of settling in parallel with each other one and strengthen bridge jumper (20).
7. by claim 2 or 3 described suction tude, it is characterized in that: form the first valve block group (16 with the valve block of layout parallel to each other side by side each other; 16a), be positioned on first cylindrical portions may (14a); Have each other side by side and the second valve block group (17 of the valve block that is arranged parallel to each other; 17a) be disposed on second cylindrical portions may (13a), this cylindrical portions may stands facing each other mutually with first cylindrical portions may (14a).
8. by the described suction tude of claim 7, it is characterized in that: two valve block groups (16,17; 16a 17a) is arranged parallel to each other.
9. by the described suction tude of claim 7, it is characterized in that: streamwise (8), the first valve block group (16,16a) be disposed in the second valve block group (17, front 17a).
10. by the described suction tude of claim 7, it is characterized in that: the first valve block group (16) and the second valve block group (17) layout that overlaps each other.
11. by any described suction tude among the claim 1-3, it is characterized in that: suction tude (1) comprises first pipeline section (11) that has a throttle valve (2) and one and has valve block (16,17; 16a, second pipeline section (12) 17a), wherein, second pipeline section (12) is divided into first district (14) and second district (13) on flow direction, wherein these two districts form two watts of shape half ones, and described watt of shape half one forms second pipeline section (12) of suction tude (1) through amalgamation.
12. by any described suction tude among the claim 1-3, it is characterized in that: valve block is formed on the independent insertion parts (30), wherein, this insertion parts (30) can be substantially perpendicular to flow direction (8) and be introduced in the suction tude (1).
13. by the described suction tude of claim 12, its feature is on ground: insertion parts (30) has the joint (31) or the negative pressure joint (31) that are used to import gas.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004019446.7 | 2004-04-19 | ||
| DE102004019446A DE102004019446B4 (en) | 2004-04-19 | 2004-04-19 | Low noise intake manifold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1690400A CN1690400A (en) | 2005-11-02 |
| CN100394018C true CN100394018C (en) | 2008-06-11 |
Family
ID=35140089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100672090A Expired - Fee Related CN100394018C (en) | 2004-04-19 | 2005-04-19 | Low noise air inlet pipe with throttle |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2005307980A (en) |
| CN (1) | CN100394018C (en) |
| DE (1) | DE102004019446B4 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806262A (en) * | 2010-03-30 | 2010-08-18 | 重庆长安汽车股份有限公司 | Noise reducing structure of gasoline engine intake system |
| JP6089749B2 (en) * | 2013-02-14 | 2017-03-08 | Nok株式会社 | gasket |
| WO2014136666A1 (en) * | 2013-03-05 | 2014-09-12 | Nok株式会社 | Suction noise reduction device |
| US10323610B2 (en) * | 2016-01-11 | 2019-06-18 | Ford Global Technologies, Llc | Noise attenuation device for an intake system of an internal combustion engine |
| GB2553818B (en) * | 2016-09-15 | 2018-09-26 | Ford Global Tech Llc | A throttle valve assesmbly |
| CN106677931A (en) * | 2016-12-16 | 2017-05-17 | 浙江吉利控股集团有限公司 | EGR system applied to engine and engine |
| JP7065000B2 (en) * | 2018-09-18 | 2022-05-11 | 日立Astemo株式会社 | Intake device |
| JP7196794B2 (en) * | 2018-10-17 | 2022-12-27 | トヨタ自動車株式会社 | Intake system for internal combustion engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1419303A (en) * | 1973-02-08 | 1975-12-31 | Lac Rex Brevetti Sa | Means for use in conjunction with a carburettor |
| US5758614A (en) * | 1997-05-01 | 1998-06-02 | Ford Global Technologies, Inc. | Noise suppression vanes in the intake system of an internal combustion engine |
| US5970963A (en) * | 1997-03-04 | 1999-10-26 | Nippon Soken, Inc. | Apparatus for preventing flow noise in throttle valve |
| JP2001020814A (en) * | 1999-07-06 | 2001-01-23 | Aisan Ind Co Ltd | Throttle body |
| JP2001098959A (en) * | 1999-10-01 | 2001-04-10 | Aisan Ind Co Ltd | Throttle controller for internal combustion engine |
| JP2002122052A (en) * | 2000-10-17 | 2002-04-26 | Toyota Motor Corp | Intake device for on-vehicle engine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3624490B2 (en) * | 1995-10-30 | 2005-03-02 | アイシン精機株式会社 | Intake device for internal combustion engine |
| JP3550850B2 (en) * | 1996-02-02 | 2004-08-04 | 株式会社デンソー | Exhaust gas recirculation device |
| JP3183182B2 (en) * | 1996-08-28 | 2001-07-03 | トヨタ自動車株式会社 | Resin intake manifold |
| JP3308470B2 (en) * | 1997-06-27 | 2002-07-29 | 株式会社日本自動車部品総合研究所 | Airflow noise suppression device for throttle valve |
| JP3337630B2 (en) * | 1997-11-10 | 2002-10-21 | トヨタ自動車株式会社 | Abnormal noise reduction structure |
| JP3430840B2 (en) * | 1997-03-04 | 2003-07-28 | 株式会社日本自動車部品総合研究所 | Airflow noise suppression device for throttle valve |
-
2004
- 2004-04-19 DE DE102004019446A patent/DE102004019446B4/en not_active Expired - Fee Related
-
2005
- 2005-04-18 JP JP2005120337A patent/JP2005307980A/en active Pending
- 2005-04-19 CN CNB2005100672090A patent/CN100394018C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1419303A (en) * | 1973-02-08 | 1975-12-31 | Lac Rex Brevetti Sa | Means for use in conjunction with a carburettor |
| US5970963A (en) * | 1997-03-04 | 1999-10-26 | Nippon Soken, Inc. | Apparatus for preventing flow noise in throttle valve |
| US5758614A (en) * | 1997-05-01 | 1998-06-02 | Ford Global Technologies, Inc. | Noise suppression vanes in the intake system of an internal combustion engine |
| JP2001020814A (en) * | 1999-07-06 | 2001-01-23 | Aisan Ind Co Ltd | Throttle body |
| JP2001098959A (en) * | 1999-10-01 | 2001-04-10 | Aisan Ind Co Ltd | Throttle controller for internal combustion engine |
| JP2002122052A (en) * | 2000-10-17 | 2002-04-26 | Toyota Motor Corp | Intake device for on-vehicle engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005307980A (en) | 2005-11-04 |
| DE102004019446B4 (en) | 2006-01-12 |
| CN1690400A (en) | 2005-11-02 |
| DE102004019446A1 (en) | 2005-11-10 |
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