WO2009116424A1 - エンジンのアイドル吸気制御装置 - Google Patents
エンジンのアイドル吸気制御装置 Download PDFInfo
- Publication number
- WO2009116424A1 WO2009116424A1 PCT/JP2009/054506 JP2009054506W WO2009116424A1 WO 2009116424 A1 WO2009116424 A1 WO 2009116424A1 JP 2009054506 W JP2009054506 W JP 2009054506W WO 2009116424 A1 WO2009116424 A1 WO 2009116424A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- trap
- chamber
- engine
- dust
- bypass
- Prior art date
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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
- F02M23/00—Apparatus for adding secondary air to fuel-air mixture
- F02M23/04—Apparatus for adding secondary air to fuel-air mixture with automatic control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
-
- 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
Definitions
- the present invention relates to a throttle body having an intake passage connected to an intake port of an engine and a throttle valve for opening and closing the intake passage, a bypass that bypasses the throttle valve and is connected to the intake passage, and a bypass valve that adjusts the bypass in an adjustable manner.
- the engine is provided with a dust trap for preventing dust from entering the bypass valve from the intake passage.
- the dust trap is composed of a plurality of passages connected in a crank shape, and the direction of the intake air flowing through the bypass is changed to a right angle to separate the dust from the intake air.
- Patent Document 1 Japanese Unexamined Patent Publication No. 2001-115931 Japanese Unexamined Patent Publication No. 3-264769
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide an idle intake control device for an engine having a dust separation effect and a compact dust trap.
- the present invention provides a throttle body having an intake passage connected to an intake port of an engine and a throttle valve for opening and closing the bypass, a bypass bypassing the throttle valve and connected to the intake passage, and the bypass
- the dust trap is disposed on the intake passage side.
- the first feature is that the two trap chambers are formed in a U-shaped cross section with a reversing chamber communicating with each other so as to go around one end of the partition wall. That.
- the second feature is that a step portion is formed between the reversing chamber and the second trapping chamber so that the bottom surface of the second trapping chamber is higher than the bottom surface of the reversing chamber.
- the present invention further includes forming the first trap chamber, the second trap chamber, and the reversing chamber by molding from one side surface of the throttle body.
- the third feature is that the remaining punching hole is closed with a closing plug.
- the present invention has a fourth feature in which the trap inlet hole is opened in the bottom surface of the first trap chamber.
- the trap outlet hole is opened on the inner surface of the second trap chamber, the axis of the trap outlet hole is made parallel to the axis of the valve shaft of the throttle valve,
- a fifth feature is that a valve hole for mounting the bypass valve is arranged on the same line as the trap outlet hole.
- the reversal chamber when air or gas passing through the bypass flows toward the bypass valve through the trap, first, when flowing into the first trap chamber from the trap inlet hole, the air or gas passes through the partition into the reversing chamber.
- the reversal chamber In this reversal chamber, the reversal chamber is reversed by approximately 180 °, is directed to the second trap chamber, and flows out to the trap outlet hole. Therefore, the dust contained in the air or gas is effective when the reversal is approximately 180 °.
- the dust that reaches the trap outlet is drastically reduced. Therefore, dust can be prevented from accumulating around the bypass valve, and the adjustment function of the bypass valve can always be stabilized.
- the U-shaped dust trap including the first trap chamber, the second trap chamber, and the reversing chamber is compact and can be easily formed in a small throttle body for a motorcycle or the like.
- the air or gas reversed approximately 180 ° in the reversing chamber is After colliding with the stepped portion and changing the course upward, it moves to the second trap chamber and flows out to the trap outlet hole. Therefore, the dust contained in the air or gas can be separated by specific gravity difference when changing the course by colliding with the stepped part immediately before moving from the reversing chamber to the second trap chamber, and the trap dust separation. Function can be enhanced.
- the trap is formed by molding from one side of the throttle body, and the mold release hole remaining on one side of the throttle body is closed with a closing plug.
- the dust trap can be formed, and it is not necessary to apply special processing to the dust trap, which can contribute to a reduction in manufacturing cost.
- the trap inlet hole since the trap inlet hole is opened in the bottom surface of the first trap chamber, the trap inlet hole can be easily formed by molding from the die punching hole or drilling.
- the air or gas that has flowed into the first trap chamber is allowed to collide with the stepped portion after the lower portion of the first trap chamber is turned over and reversed in the reversing chamber. It is possible to enhance the dust separation effect.
- the trap outlet hole and the valve hole, and the valve shaft hole of the throttle valve can be machined in parallel with the throttle body, so that the production efficiency of the throttle body can be improved.
- FIG. 1 is a longitudinal side view of a throttle body provided with an idle intake control device for an engine according to the present invention.
- FIG. 2 is an enlarged sectional view taken along line 2-2 of FIG.
- First embodiment 3 is a cross-sectional view taken along line 3-3 of FIG.
- First embodiment 4 is a cross-sectional view taken along line 4-4 of FIG. (First embodiment)
- a throttle body T is attached to a motorcycle engine (not shown), and a horizontal intake passage 1 connected to an intake port of the engine is formed at the center, and the intake passage 1 is opened and closed.
- a valve shaft 2 a of the butterfly throttle valve 2 is supported by the throttle body T.
- An electromagnetic fuel injection valve 4 capable of injecting fuel toward the intake passage 1 downstream of the throttle valve 2 is mounted on the upper wall of the throttle body T.
- the throttle body T is provided with a bypass 5 that bypasses the upper side of the throttle valve 2 and is connected to the intake passage 1.
- the bypass 5 can be adjusted in the middle of the bypass 5.
- a dust trap 7 for preventing dust from entering the bypass valve 6 from the upstream side of the intake passage 1.
- the dust includes atmospheric dust sucked into the intake passage 1 and combustion soot that flows back to the intake passage 1 during backfire of the engine.
- the bypass 5 opens upward at the lower end on the upstream side of the intake passage 1 and extends upward, and a trap inlet hole 10 reaching the dust trap 7, and a trap extending in parallel with the valve shaft 2 a of the throttle valve 2 from one side of the dust trap 7.
- the throttle body T is provided with a valve hole 15 disposed coaxially with the trap outlet hole 11 with the metering hole 12 interposed therebetween, and the bypass valve 6 is attached to the valve hole 15. .
- the valve hole 15 includes a small-diameter guide hole 16 that opens to the measuring hole 12, a larger-diameter screw hole 17 that is continuous with the small-diameter guide hole 16, and a large-diameter guide that is continuous with the screw hole 17 and has a larger diameter. It consists of a hole 18.
- the bypass valve 6 is freely rotatable and slidable in the small diameter guide hole 16 so as to be rotatably and slidably fitted in the small diameter guide hole 16, the screw shaft portion 21 screwed into the screw hole 17, and the large diameter guide hole 18.
- a head 22 with a tool groove 23 that is fitted together, and the outer peripheral groove 22 a of the head 22 holds a seal member 24 that is in close contact with the inner peripheral surface of the large-diameter guide hole 18.
- a coil spring 25 for preventing the bypass valve 6 from rotating is contracted in the large diameter guide hole 18.
- the bypass valve 6 is rotated forward and backward by a tool engaged with the tool groove 23 to adjust the amount of protrusion of the valve portion 20 into the measuring hole 12.
- the idle intake amount of the engine flowing through the bypass 5 can be adjusted.
- the dust trap 7 includes a first trap chamber 30, a second trap chamber 31 adjacent to the first trap chamber 30 across a vertically extending partition wall 32 integral with the throttle body T, and the first and second trap chambers.
- a section U is formed in a U-shaped cross section with a substantially semicircular reversing chamber 33 that communicates between 31 so as to go around one end of the partition wall 32.
- a step portion 34 is formed between the inversion chamber 33 and the second trap chamber 31 so that the bottom surface of the second trap chamber 31 is higher than the bottom surface of the inversion chamber 33.
- the trap inlet hole 10 is opened in the bottom surface of the first trap chamber 30, and the trap outlet hole 11 is opened in the inner surface of the second trap chamber 31 facing the partition wall 32.
- the dust trap 7 and the trap inlet hole 10 are formed by molding from the upper surface side of the throttle body T when the throttle body T is cast, and the circular die hole 35 remaining on the upper surface of the throttle body T is formed. Is closed with a closing plug 36.
- reference numeral 37 denotes a throttle sensor connected to the valve shaft 2a in order to detect the opening degree of the throttle valve 2.
- the dust trap 7 has a bottom surface of the first trap chamber 30 through the trap inlet hole 10.
- the air that has flowed to the side first moves from the lower portion of the first trap chamber 30 along the partition wall 32 to the reversing chamber 33, and is reversed by approximately 180 ° in the reversing chamber 33 toward the second trap chamber 31. Since the bottom surface of the second trap chamber 31 is one step higher than the bottom surface of the reversing chamber 33 via the step portion 34, the air reversed by about 180 ° below the reversing chamber 33 collides with the step portion 34.
- the dust After changing the course upward, it moves to the second trap chamber 31 and flows out to the trap outlet hole 11. Therefore, if dust is mixed in the air, the dust is effectively centrifuged from the air when the air is first reversed approximately 180 ° below the reversing chamber 33. Next, immediately before the air moves from the reversing chamber 33 to the second trap chamber 31, the dust is separated from the air due to the difference in specific gravity when it changes the course by colliding with the stepped portion 34.
- the air from which dust has been removed by the dust trap 7 is directed from the trap outlet hole 11 to the measuring hole 12, the flow rate of which is adjusted by the valve portion 20 of the bypass valve 6, and then through the bent path 13 to the intake passage 1. It flows downstream and is sucked into the engine. Therefore, since clean air always flows through the metering hole 12 and dust is prevented from accumulating around the valve portion 20 of the bypass valve 6, the adjustment function of the bypass valve 6 can always be stabilized.
- the U-shaped dust trap 7 composed of the first trap chamber 30, the second trap chamber 31, and the reversing chamber 33 is compact and can be easily formed in a small throttle body T for a motorcycle or the like.
- this is formed by molding from the upper side surface of the throttle body T, and the mold release hole 35 remaining on the upper side surface of the throttle body T is closed by the closing plug 36. Therefore, the dust trap 7 is simultaneously formed with the molding of the throttle body T. Therefore, it is not necessary to perform special processing on the dust trap 7, which can contribute to a reduction in manufacturing cost.
- the trap inlet hole 10 is opened in the bottom surface of the first trap chamber 30, the trap inlet hole 10 can be easily formed by molding or drilling from the die punching hole 35, and the first trap After the air flowing into the chamber 30 is swung down the first trap chamber 30 and reversed in the reversing chamber 33, it effectively collides with the stepped portion 34. Can be increased.
- the axis Y2 of the trap outlet hole 11 opened on the inner side surface of the second trap chamber 31 is parallel to the axis Y1 of the valve shaft 2a of the throttle valve 2, and the bypass valve 6 is mounted on the coaxial line Y2 with the trap outlet hole 11. Since the valve hole 15 is arranged, the trap outlet hole 11 and the valve hole 15 and the valve shaft hole of the throttle valve 2 can be machined in parallel with the throttle body T, thereby improving the production efficiency of the throttle body T. be able to.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (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)
- Processes For Solid Components From Exhaust (AREA)
Abstract
Description
1・・・・・吸気道
2・・・・・スロットル弁
2a・・・・弁軸
5・・・・・バイパス
6・・・・・バイパス弁
7・・・・・ダストトラップ
10・・・・トラップ入口孔
11・・・・トラップ出口孔
15・・・・弁孔
30・・・・第1トラップ室
31・・・・第2トラップ室
32・・・・隔壁
33・・・・反転室
34・・・・段部
35・・・・型抜き孔
36・・・・閉じ栓
Claims (5)
- エンジンの吸気ポートに連なる吸気道(1)及びそれを開閉するスロットル弁(2)を備えるスロットルボディ(T)に,スロットル弁(2)を迂回して吸気道(1)に接続されるバイパス(5)と,このバイパス(5)を調節可能に絞るバイパス弁(6)とを設け,前記バイパス(5)に,吸気道(1)からバイパス弁(6)へのダストの侵入を防ぐダストトラップ(7)を設けた,エンジンのアイドル吸気制御装置において,
前記ダストトラップ(7)を,吸気道(1)側のバイパス(5)のトラップ入口孔(10)が開口する第1トラップ室(30)と,この第1トラップ室(30)に隔壁(32)を挟んで隣接し,バイパス弁(6)側のバイパス(5)のトラップ出口孔(11)が開口する第2トラップ室(31)と,これら第1及び第2トラップ室(30,31)間を,前記隔壁(32)の一端を回り込むようにして連通する反転室(33)とで断面U字状に形成したことを特徴とする,エンジンのアイドル吸気制御装置。 - 請求項1記載のエンジンのアイドル吸気制御装置において,
前記反転室(33)及び第2トラップ室(31)間に,反転室(33)の底面より第2トラップ室(31)の底面を高くする段部(34)を形成したことを特徴とする,エンジンのアイドル吸気制御装置。 - 請求項1又は2記載のエンジンのアイドル吸気制御装置において,
前記第1トラップ室(30),第2トラップ室(31)及び反転室(33)を,スロットルボディ(T)の一側面側から型成形により形成し,スロットルボディ(T)の一側面に残留する型抜き孔(35)を閉じ栓(36)で閉鎖したことを特徴とする,エンジンのアイドル吸気制御装置。 - 請求項3記載のエンジンのアイドル吸気制御装置において,
前記第1トラップ室(30)の底面に前記トラップ入口孔(10)を開口したことを特徴とする,エンジンのアイドル吸気制御装置。 - 請求項4記載のエンジンのアイドル吸気制御装置において,
前記第2トラップ室(31)の内側面に前記トラップ出口孔(11)を開口し,このトラップ出口孔(11)の軸線(Y2)をスロットル弁(2)の弁軸(2a)の軸線(Y1)と平行にし,前記トラップ出口孔(11)と同軸線(Y2)上に,前記バイパス弁(6)を装着する弁孔(15)を配置したことを特徴とする,エンジンのアイドル吸気制御装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0908769-9A BRPI0908769A2 (pt) | 2008-03-21 | 2009-03-10 | Dispositivo decontrole de entrada de marcha lenta do motor |
CN2009801095133A CN101978148B (zh) | 2008-03-21 | 2009-03-10 | 发动机的怠速进气控制装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008073195A JP4879927B2 (ja) | 2008-03-21 | 2008-03-21 | エンジンのアイドル吸気制御装置 |
JP2008-073195 | 2008-03-21 |
Publications (1)
Publication Number | Publication Date |
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WO2009116424A1 true WO2009116424A1 (ja) | 2009-09-24 |
Family
ID=41090829
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/054506 WO2009116424A1 (ja) | 2008-03-21 | 2009-03-10 | エンジンのアイドル吸気制御装置 |
Country Status (5)
Country | Link |
---|---|
JP (1) | JP4879927B2 (ja) |
CN (1) | CN101978148B (ja) |
BR (1) | BRPI0908769A2 (ja) |
TW (1) | TWI343966B (ja) |
WO (1) | WO2009116424A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140083393A1 (en) * | 2012-09-27 | 2014-03-27 | International Engine Intellectual Property Company, Llc | Methods for controlling engine idle speed |
JP6963516B2 (ja) * | 2018-01-26 | 2021-11-10 | 株式会社ミクニ | スロットル装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08182909A (ja) * | 1994-12-28 | 1996-07-16 | Tsuchiya Mfg Co Ltd | エアクリーナのダスト排出装置 |
JPH112170A (ja) * | 1997-06-11 | 1999-01-06 | Nippon Soken Inc | アイドル吸気制御装置 |
JP2003049727A (ja) * | 2001-08-06 | 2003-02-21 | Fuji Heavy Ind Ltd | エンジンの吸気装置 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3934834B2 (ja) * | 1999-10-19 | 2007-06-20 | 株式会社ケーヒン | エンジンの吸気量制御装置 |
-
2008
- 2008-03-21 JP JP2008073195A patent/JP4879927B2/ja not_active Expired - Fee Related
-
2009
- 2009-02-26 TW TW098106171A patent/TWI343966B/zh not_active IP Right Cessation
- 2009-03-10 BR BRPI0908769-9A patent/BRPI0908769A2/pt not_active Application Discontinuation
- 2009-03-10 CN CN2009801095133A patent/CN101978148B/zh active Active
- 2009-03-10 WO PCT/JP2009/054506 patent/WO2009116424A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08182909A (ja) * | 1994-12-28 | 1996-07-16 | Tsuchiya Mfg Co Ltd | エアクリーナのダスト排出装置 |
JPH112170A (ja) * | 1997-06-11 | 1999-01-06 | Nippon Soken Inc | アイドル吸気制御装置 |
JP2003049727A (ja) * | 2001-08-06 | 2003-02-21 | Fuji Heavy Ind Ltd | エンジンの吸気装置 |
Also Published As
Publication number | Publication date |
---|---|
JP2009228509A (ja) | 2009-10-08 |
TW200946769A (en) | 2009-11-16 |
JP4879927B2 (ja) | 2012-02-22 |
CN101978148A (zh) | 2011-02-16 |
TWI343966B (en) | 2011-06-21 |
BRPI0908769A2 (pt) | 2015-07-28 |
CN101978148B (zh) | 2013-06-19 |
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