JP2006077589A - Intake device of internal combustion engine - Google Patents

Intake device of internal combustion engine Download PDF

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JP2006077589A
JP2006077589A JP2004259650A JP2004259650A JP2006077589A JP 2006077589 A JP2006077589 A JP 2006077589A JP 2004259650 A JP2004259650 A JP 2004259650A JP 2004259650 A JP2004259650 A JP 2004259650A JP 2006077589 A JP2006077589 A JP 2006077589A
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intake
control valve
valve
front edge
plate
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JP4412119B2 (en
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Hiroshi Isaji
洋 伊佐治
Koichi Mori
浩一 森
Shunichi Mitsuishi
俊一 三石
Masayoshi Nishizawa
公良 西沢
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Nissan Motor Co Ltd
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Nissan Motor Co Ltd
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Priority to US11/214,781 priority patent/US7322333B2/en
Priority to EP05019374A priority patent/EP1632659A3/en
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    • 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

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Abstract

<P>PROBLEM TO BE SOLVED: To secure a stable gas flow, even when changing an opening-closing state of an intake control valve 20, by providing the gas flow of various strengths by changing the opening-closing state of the intake control valve. <P>SOLUTION: The intake control valve 20 is constituted by fixing one end side 23a of a plate-like valve element 23 to a valve stem 22 rotatable by a storage part 21 for storing this valve. A first plate-like member 25 and a second plate-like member 26 are arranged in parallel in an intake passage 13, and continue with the other end side 23b of the valve element 23 in response to a predetermined rotational position of the intake control valve 20 (the valve stem 22). <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、内燃機関の吸気装置に関する。   The present invention relates to an intake device for an internal combustion engine.

従来、特許文献１に記載のように、吸気ポートの通路内を隔壁により第１通路と第２通路とに区画形成し、第２通路を開閉する吸気制御弁（シャッタ弁）を設け、吸気制御弁の閉状態では吸気制御弁の前縁を隔壁と当接させてタンブル生成を確実に行うことが知られている。
実開平７−２５２６４号公報 Conventionally, as described in Patent Document 1, the intake port passage is partitioned into a first passage and a second passage by a partition, and an intake control valve (shutter valve) that opens and closes the second passage is provided to control intake control. It is known that when the valve is in the closed state, the leading edge of the intake control valve is brought into contact with the partition wall to reliably generate the tumble.
Japanese Utility Model Publication No. 7-25264

しかしながら、特許文献１に記載の装置では隔壁が１つであったため、吸気制御弁の開閉状態は、第２通路を全開にする状態と、第２通路を全閉にする状態との２つの状態しかなかった。このため、機関の運転状態に応じて種々の強度のガス流動を得ることが困難であった。
本発明は、上記問題に鑑みなされたものであり、吸気制御弁の開閉状態を変化させることで種々の強度のガス流動を得ることを可能にすると共に、吸気制御弁の開閉状態を変化させた場合においても、安定したガス流動を確保することを目的とする。 However, since the apparatus described in Patent Document 1 has one partition wall, the open / close state of the intake control valve is in two states: a state in which the second passage is fully opened and a state in which the second passage is fully closed. There was only. For this reason, it has been difficult to obtain gas flows having various strengths depending on the operating state of the engine.
The present invention has been made in view of the above problems, and by changing the opening / closing state of the intake control valve, it is possible to obtain gas flows of various strengths and changing the opening / closing state of the intake control valve. Even in the case, the object is to ensure a stable gas flow.

そのため本発明では、吸気通路の通路壁近傍位置に配設された弁軸と、該弁軸に一端部を固定されて弁軸回りを回動する弁体とを有し、該弁軸の回動位置に応じてガス流動を制御する吸気制御弁と、吸気制御弁の複数の回動位置での弁体の他端側の各位置から、吸入空気の流れ方向に延在する複数の板状部材から構成される吸気整流体と、を有する。   Therefore, the present invention has a valve shaft disposed in the vicinity of the passage wall of the intake passage, and a valve body having one end fixed to the valve shaft and rotating around the valve shaft. An intake control valve that controls gas flow according to the moving position, and a plurality of plate-like shapes that extend in the intake air flow direction from each position on the other end side of the valve body at a plurality of rotational positions of the intake control valve And an intake air rectifier composed of members.

本発明によれば、吸気制御弁の複数の開閉位置に合わせた位置に複数の板状部材から構成される吸気整流体が配設されることで、吸気制御弁の回動位置が複数に変化する場合でも、各位置においてガス流動を安定して生成することができ、大幅なエミッション低減および燃費向上ができるという効果がある。   According to the present invention, the intake rectifying body composed of a plurality of plate-like members is disposed at positions corresponding to the plurality of opening / closing positions of the intake control valve, so that the rotation position of the intake control valve changes into a plurality of positions. Even in this case, the gas flow can be stably generated at each position, and there is an effect that emission can be greatly reduced and fuel consumption can be improved.

以下、図面に基づき、本発明の実施形態について説明する。
図１は、本発明の第１の実施形態に係る内燃機関の吸気装置の全体構成を示す図である。
複数個（例えば４個）設けられた各シリンダ１（１個のみ図示）内には、ピストン２が移動可能に配置されている。ピストン２の冠面２ａと、シリンダ１の上側に配設されたシリンダヘッド３とにより燃焼室４が画成されている。燃焼室４の上部のシリンダヘッド３には、点火プラグ５が配設されている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing an overall configuration of an intake device for an internal combustion engine according to a first embodiment of the present invention.
A piston 2 is movably disposed in each cylinder 1 (only one is shown) provided in a plurality (for example, four). A combustion chamber 4 is defined by the crown surface 2 a of the piston 2 and the cylinder head 3 disposed on the upper side of the cylinder 1. A spark plug 5 is disposed in the cylinder head 3 at the top of the combustion chamber 4.

各燃焼室４には、吸気バルブ６および排気バルブ７が２個ずつ配置されている。吸気バルブ６および排気バルブ７は、それぞれに設けられた動弁機構８，９により開閉駆動される。
更に各燃焼室４には、二股の吸気ポート１０および排気ポート１１が互いに対向して設けられている（各１個のみ図示）。吸気ポート１０には吸気マニホールド１２が接続されて吸気通路１３を構成している。排気ポート１１には、排気マニホールド（図示せず）が接続されて排気通路１５を構成する。 In each combustion chamber 4, two intake valves 6 and two exhaust valves 7 are arranged. The intake valve 6 and the exhaust valve 7 are driven to open and close by valve mechanisms 8 and 9 provided respectively.
Further, each combustion chamber 4 is provided with a bifurcated intake port 10 and an exhaust port 11 facing each other (only one is shown). An intake manifold 12 is connected to the intake port 10 to form an intake passage 13. An exhaust manifold (not shown) is connected to the exhaust port 11 to form an exhaust passage 15.

吸気通路１３には、上流側にスロットルバルブ１６が配置され、スロットルバルブ１６の開閉制御により、スロットルバルブ１６の上流側に配置されたエアクリーナー１７を介して新気が吸入される。
スロットルバルブ１６の下流側には、コレクタ１８が配置されており、このコレクタ１８に接続された吸気マニホールド１２を介して各シリンダ１に吸入空気を分配する。 A throttle valve 16 is disposed on the upstream side of the intake passage 13, and fresh air is sucked through an air cleaner 17 disposed on the upstream side of the throttle valve 16 by opening / closing control of the throttle valve 16.
A collector 18 is disposed on the downstream side of the throttle valve 16, and intake air is distributed to each cylinder 1 via an intake manifold 12 connected to the collector 18.

吸気通路１３（例えば、吸気マニホールド１２）の通路壁近傍位置には、通路壁底面の一部を切り欠いて、吸気制御弁２０（弁軸２２）を格納する格納部２１が形成されている。
吸気制御弁２０（本実施形態ではタンブル制御弁）は、格納部２１の所定位置にて回動可能な弁軸２２に、板状の弁体２３の一端部２３ａが固定されたフラップ弁として構成されている。 In the vicinity of the passage wall of the intake passage 13 (for example, the intake manifold 12), a storage portion 21 for storing the intake control valve 20 (valve shaft 22) is formed by cutting out a part of the bottom surface of the passage wall.
The intake control valve 20 (the tumble control valve in this embodiment) is configured as a flap valve in which one end portion 23a of a plate-like valve body 23 is fixed to a valve shaft 22 that can be rotated at a predetermined position of the storage portion 21. Has been.

吸気制御弁２０の弁軸２２は、アクチュエータ２４（サーボモータ）により回動可能となっている。このため、アクチュエータ２４の制御、すなわち弁軸２２の回動位置に応じて、弁体２３の他端側の前縁２３ｂが弁軸２２を中心とした円弧状に動くことにより、吸気通路１３の開閉が制御される。例えば、吸気制御弁２０が全開の場合、すなわち弁体２３が吸気通路１３の上壁と平行な位置にある場合には、吸気制御弁２０の全体が格納部２１に格納されることとなるため、吸入空気の流動抵抗が低減する。   The valve shaft 22 of the intake control valve 20 can be rotated by an actuator 24 (servo motor). For this reason, the front edge 23b on the other end side of the valve body 23 moves in an arc shape around the valve shaft 22 in accordance with the control of the actuator 24, that is, according to the rotational position of the valve shaft 22, thereby Opening and closing is controlled. For example, when the intake control valve 20 is fully open, that is, when the valve body 23 is in a position parallel to the upper wall of the intake passage 13, the entire intake control valve 20 is stored in the storage unit 21. The flow resistance of intake air is reduced.

吸気通路１３（例えば、吸気ポート１０）には、吸気整流体として、複数（図１，２では２つ）の薄い板状部材である第１板状部材２５および第２板状部材２６が配設されている。第１板状部材２５および第２板状部材２６は、吸気制御弁２０（弁軸２２）の複数の回動位置での弁体２３の他端側の前縁２３ｂの各位置から、吸入空気の流れ方向に延在している。第１板状部材２５は、第２板状部材２６より吸気通路１３の上壁側に平行に配置されている。   In the intake passage 13 (for example, the intake port 10), a plurality of (two in FIGS. 1 and 2) thin plate-like members, ie, a first plate-like member 25 and a second plate-like member 26, are arranged as intake rectifiers. It is installed. The first plate-like member 25 and the second plate-like member 26 take in the intake air from each position of the front edge 23b on the other end side of the valve body 23 at a plurality of rotational positions of the intake control valve 20 (valve shaft 22). It extends in the flow direction. The first plate member 25 is disposed in parallel to the upper wall side of the intake passage 13 from the second plate member 26.

図１，２では、吸気制御弁２０の複数の回動位置を第１所定回動位置及び第２所定回動位置の２つとして説明する。
第１板状部材２５は、弁軸２２の第１所定回動位置において、弁体２３の他端側の前縁２３ｂに連続する。第２板状部材２６は、弁軸２２の第２所定回動位置において、弁体２３の他端側の前縁２３ｂに連続する。 In FIGS. 1 and 2, a plurality of rotation positions of the intake control valve 20 will be described as two, a first predetermined rotation position and a second predetermined rotation position.
The first plate member 25 continues to the front edge 23 b on the other end side of the valve body 23 at the first predetermined rotation position of the valve shaft 22. The second plate member 26 continues to the front edge 23 b on the other end side of the valve body 23 at the second predetermined rotation position of the valve shaft 22.

吸気通路１３の下流側には、吸気ポート１０にて二股の分岐点よりも上流側の位置に燃料噴射弁２７が設けられている。
また、内燃機関の運転状態を検出するため、各種センサが配設されている。例えば、図示のように、スロットルバルブ１６の上流の吸気通路１３に設けられたエアフロメータ２８（吸入空気検出センサ）や、エンジン回転数に応じた信号を出力するクランク角センサ２９などが配設されている。 A fuel injection valve 27 is provided downstream of the intake passage 13 at a position upstream of the bifurcated branch point in the intake port 10.
Various sensors are provided to detect the operating state of the internal combustion engine. For example, as shown in the drawing, an air flow meter 28 (intake air detection sensor) provided in the intake passage 13 upstream of the throttle valve 16, a crank angle sensor 29 for outputting a signal corresponding to the engine speed, and the like are disposed. ing.

これらのセンサ２８，２９からの出力信号がＥＣＵ３０に入力され、各種演算・制御を行う。ＥＣＵ３０は、点火プラグ５の点火時期制御、スロットルバルブ１６の開度制御、アクチュエータ２４の制御（弁軸２２の回動位置制御）、燃料噴射弁２７からの燃料噴射制御などを行う。
図２は、吸気制御弁２０と吸気整流体（第１板状部材２５、第２板状部材２６）との関係を示す図であり、（イ）は吸気通路１３の断面図、（ロ）は（イ）の矢印方向から見た図である。 Output signals from these sensors 28 and 29 are input to the ECU 30 to perform various calculations and controls. The ECU 30 performs ignition timing control of the spark plug 5, opening control of the throttle valve 16, control of the actuator 24 (rotation position control of the valve shaft 22), fuel injection control from the fuel injection valve 27, and the like.
FIG. 2 is a view showing the relationship between the intake control valve 20 and the intake rectifier (first plate-like member 25, second plate-like member 26), (A) is a sectional view of the intake passage 13, (B) (A) It is the figure seen from the arrow direction.

（イ）に示す通り、吸気制御弁２０の弁体２３の他端側の前縁２３ｂが第１板状部材２５の上流側端部と連続する場合には、吸入空気が、第１板状部材２５と吸気通路１３の上側壁面との間の開口部を流れることとなる。この状態では、（ロ）に示すように、第１板状部材２５より下側の吸気通路１３は吸気制御弁２０によって塞がれており、第１板状部材２５と吸気通路１３の上側壁面との間の開口部を流れる吸入空気によってシリンダ１内にタンブル流（縦渦流）が形成される。特に、内燃機関の負荷が低負荷である場合には、吸入空気量が少なくても、従来の吸入空気装置と比較してタンブル流をより強化することができる。   As shown in (a), when the front edge 23b on the other end side of the valve body 23 of the intake control valve 20 is continuous with the upstream end of the first plate member 25, the intake air is in the first plate shape. It will flow through the opening between the member 25 and the upper wall surface of the intake passage 13. In this state, as shown in (b), the intake passage 13 below the first plate-like member 25 is closed by the intake control valve 20, and the upper wall surface of the first plate-like member 25 and the intake passage 13 is covered. A tumble flow (longitudinal vortex flow) is formed in the cylinder 1 by the intake air flowing through the opening therebetween. In particular, when the load of the internal combustion engine is low, the tumble flow can be further enhanced as compared with the conventional intake air device even if the intake air amount is small.

また、吸気制御弁２０の弁体２３の他端側の前縁２３ｂを第１板状部材２５または第２板状部材２６の上流側端部と連続させるかは、内燃機関の運転状態に応じて決定する。例えば、低回転低負荷時や冷間時などには、弁体２３の他端側の前縁２３ｂが第１板状部材２５の上流側端部と連続するように、吸気制御弁２０（弁軸２２）の回動を制御する。これにより、タンブル流をより強化し、運転の安定性を向上させる。   Whether the front edge 23b on the other end side of the valve body 23 of the intake control valve 20 is continued to the upstream end of the first plate member 25 or the second plate member 26 depends on the operating state of the internal combustion engine. To decide. For example, the intake control valve 20 (valve) is set so that the front edge 23b on the other end side of the valve body 23 is continuous with the upstream end portion of the first plate member 25 at the time of low rotation and low load or cold. The rotation of the shaft 22) is controlled. Thereby, the tumble flow is further strengthened and the stability of operation is improved.

中回転中負荷時には、弁体２３の他端側の前縁２３ｂが第２板状部材２６の上流側端部と連続するように、吸気制御弁２０の回動を制御する。これにより、適切な吸入空気量を確保すると共に、適切なガス流動の確保を図る。
一方、高回転高負荷時には、吸気制御弁２０を全開にするよう、弁軸２２を回動制御して弁体２３を格納部２１に格納することで、吸入空気の流動抵抗をなくす。 During the middle rotation load, the rotation of the intake control valve 20 is controlled so that the front edge 23b on the other end side of the valve body 23 is continuous with the upstream end of the second plate member 26. As a result, an appropriate amount of intake air is ensured and an appropriate gas flow is ensured.
On the other hand, at the time of high rotation and high load, the valve shaft 22 is rotationally controlled so that the intake control valve 20 is fully opened, and the valve body 23 is stored in the storage portion 21, thereby eliminating the flow resistance of the intake air.

そして、第１板状部材２５および第２板状部材２６の下流側は、燃料噴射弁２７の近傍まで延設されている。これらの部材２５，２６の下流側には、それぞれ切り欠き２５ａ，２６ａが形成されている。第１板状部材２５および第２板状部材の２６の下流側の切り欠き２５ａ，２６ａは、燃料噴射弁２７からの燃料噴霧形状に対応して形成されている。
第１板状部材２５および第２板状部材２６の切り欠き２５ａ，２６ａにより、燃料噴射弁２７が吸気通路１３内に突出している部分において吸入空気の通路を縮径することが無く、スムーズに吸入空気の導入を行うと共に、燃料噴霧が第１板状部材２５および第２板状部材２６に付着すること（壁流）を防止する。 The downstream side of the first plate member 25 and the second plate member 26 extends to the vicinity of the fuel injection valve 27. Notches 25a and 26a are formed on the downstream sides of these members 25 and 26, respectively. Cutouts 25 a and 26 a on the downstream side of the first plate-like member 25 and the second plate-like member 26 are formed corresponding to the fuel spray shape from the fuel injection valve 27.
Due to the cutouts 25a and 26a of the first plate member 25 and the second plate member 26, the intake air passage is not reduced in diameter at the portion where the fuel injection valve 27 protrudes into the intake passage 13, and can be smoothly performed. While introducing the intake air, the fuel spray is prevented from adhering to the first plate member 25 and the second plate member 26 (wall flow).

なお、図１，２では複数の吸気整流部材は、第１板状部材２５と第２板状部材２６との２つの部材から構成することについて説明したが、これに限定されるものではなく、図３に示すように、多数の板状部材（例えば４枚の板状部材）から構成してもよい。この場合は、吸気制御弁２０の弁体２３の他端側の前縁２３ｂを、運転状況に応じて適切な位置に合わせるようにすればよい。   1 and 2, it has been described that the plurality of intake air rectifying members are composed of two members, the first plate member 25 and the second plate member 26, but the present invention is not limited to this. As shown in FIG. 3, you may comprise from many plate-shaped members (for example, four plate-shaped members). In this case, the front edge 23b on the other end side of the valve body 23 of the intake control valve 20 may be adjusted to an appropriate position according to the driving situation.

本実施形態によれば、吸気通路１３の通路壁近傍位置（格納部２１内）に配設された弁軸２２と、該弁軸２２に一端部２３ａを固定されて弁軸２２回りを回動する弁体２３とを有し、該弁軸２２の回動位置に応じてガス流動を制御する吸気制御弁２０と、吸気制御弁２０の複数の回動位置での弁体２３の他端側（他端部２３ｂ）の各位置から、吸入空気の流れ方向に延在する複数の板状部材から構成される吸気整流体（第１板状部材２５、第２板状部材２６）と、を有する。このため、吸気制御弁２０の複数の開閉位置に合わせた位置に複数の板状部材から構成された吸気整流体が配設されることで、吸気制御弁２０の回動位置が複数に変化する場合でも、各位置においてガス流動を安定して生成することができ、大幅なエミッション低減および燃費向上ができる。   According to the present embodiment, the valve shaft 22 disposed in the vicinity of the passage wall of the intake passage 13 (in the storage portion 21), and the one end portion 23 a is fixed to the valve shaft 22, and the valve shaft 22 is rotated. And the other end side of the valve body 23 at a plurality of rotational positions of the intake control valve 20. The intake control valve 20 controls the gas flow according to the rotational position of the valve shaft 22. An intake air rectifier (a first plate member 25, a second plate member 26) composed of a plurality of plate members extending in the direction of intake air flow from each position of the other end 23b. Have. For this reason, the rotation position of the intake control valve 20 is changed to a plurality of positions by disposing the intake rectifier composed of a plurality of plate-like members at positions corresponding to the plurality of opening / closing positions of the intake control valve 20. Even in this case, the gas flow can be stably generated at each position, and the emission can be greatly reduced and the fuel consumption can be improved.

また本実施形態によれば、吸気整流体（第１板状部材２５、第２板状部材２６）の下流側は、吸気通路１３に配置された燃料噴射弁２７の近傍まで延びて、そこに切り欠き２５ａ、２６ａが形成されている。このため、燃料噴射弁２７が吸気通路１３内に突出している部分において吸入空気の通路を縮径することが無く、スムーズに吸入空気の導入を行うことができる。   Further, according to the present embodiment, the downstream side of the intake rectifier (the first plate member 25 and the second plate member 26) extends to the vicinity of the fuel injection valve 27 disposed in the intake passage 13, and there Notches 25a and 26a are formed. Therefore, the intake air passage can be smoothly introduced without reducing the diameter of the intake air passage at the portion where the fuel injection valve 27 protrudes into the intake passage 13.

また本実施形態によれば、吸気整流体（第１板状部材２５、第２板状部材２６）の下流側の切り欠き２５ａ，２６ａは、燃料噴射弁２７からの燃料噴霧形状に対応して形成されている。このため、燃料噴霧が吸気整流部材２５，２６に付着することを防止することができる。
また本実施形態によれば、吸気通路壁１３の一部を切り欠いて、吸気制御弁２０を格納する格納部２１を形成した。このため、吸気制御弁２０を全開にした場合には、弁軸２２を回動制御して弁体２３を格納部２１に格納することで、吸入空気の流動抵抗を低減すことができる。 Further, according to the present embodiment, the cutouts 25a and 26a on the downstream side of the intake rectifier (first plate member 25, second plate member 26) correspond to the fuel spray shape from the fuel injection valve 27. Is formed. For this reason, it is possible to prevent the fuel spray from adhering to the intake air rectifying members 25 and 26.
According to the present embodiment, a part of the intake passage wall 13 is cut away to form the storage portion 21 for storing the intake control valve 20. Therefore, when the intake control valve 20 is fully opened, the flow resistance of the intake air can be reduced by controlling the rotation of the valve shaft 22 and storing the valve body 23 in the storage portion 21.

次に、本発明の第２の実施形態について図４および図５を用いて説明する。
本実施形態では、図４（イ）および図５（イ）に示すように、吸気制御弁２０として、弁体２３の他端側の右側にスワール発生用切り欠き２３ｃが形成されたスワール制御弁を用いている。吸気制御弁２０は、スワール発生用切り欠き２３ｃが形成されていない他端側の前縁である第１前縁２３ｄと、スワール発生用切り欠き２３ｃが形成されている他端側の前縁である第２前縁２３ｅと、を有する。 Next, a second embodiment of the present invention will be described with reference to FIGS.
In the present embodiment, as shown in FIGS. 4 (a) and 5 (a), as the intake control valve 20, a swirl control valve in which a swirl cutout 23c is formed on the right side of the other end side of the valve body 23. Is used. The intake control valve 20 includes a first front edge 23d which is a front edge on the other end side where the swirl generation cutout 23c is not formed, and a front edge on the other end side where the swirl generation cutout 23c is formed. A second front edge 23e.

図４（イ）は、吸気制御弁２０を全閉位置において、吸気通路１３の上流側から吸気制御弁２０を見た図であり、（ロ）は（イ）のＡ−Ａ線における端面図、（ハ）は（イ）のＢ−Ｂ線における端面図である。
図５（イ）は弁軸２２の所定回動位置において、吸気制御弁２０が所定の閉じ量である状態を示す図であり、（ロ）は（イ）のＡ−Ａ線における端面図、（ハ）は（イ）のＢ−Ｂ線における端面図である。 4A is a view of the intake control valve 20 as viewed from the upstream side of the intake passage 13 when the intake control valve 20 is in the fully closed position, and FIG. 4B is an end view taken along line AA in FIG. (C) is an end view in the BB line of (b).
FIG. 5 (a) is a view showing a state in which the intake control valve 20 is in a predetermined closing amount at a predetermined rotation position of the valve shaft 22, and (b) is an end view taken along the line A-A in FIG. (C) is an end view taken along line BB of (A).

吸気制御弁２０が全閉である時には、図４に示す通り、第１前縁２３ｄが吸気通路１３の上側壁面に当接する一方、第２前縁２３ｅが第１板状部材２５と連続する。
吸気制御弁２０が所定回動位置にある時には、図５に示す通り、第１前縁２３ｄが第１板状部材２５と連続する一方、第２前縁２３ｅが第２板状部材２６と連続する。
なお、本実施形態では、吸気整流体として第１板状部材２５および第２板状部材２６からなることについて説明したが、これに限定されるものではない。すなわち、第１板状部材２５および第２板状部材２６だけでなく、多数の板状部材を配設し、吸気制御弁２０の第１前縁２３ｄと第２前縁２３ｅとが図５とは異なる位置にある時に、これらの位置に連続するように第１板状部材と第２板状部材とがあればよい。このようにすれば、吸気制御弁２０の中間開度においても適切にガス流動を安定させることができる。 When the intake control valve 20 is fully closed, as shown in FIG. 4, the first front edge 23 d abuts on the upper wall surface of the intake passage 13, while the second front edge 23 e is continuous with the first plate member 25.
When the intake control valve 20 is in the predetermined rotation position, the first front edge 23d is continuous with the first plate member 25 while the second front edge 23e is continuous with the second plate member 26, as shown in FIG. To do.
In addition, although this embodiment demonstrated having consisting of the 1st plate-shaped member 25 and the 2nd plate-shaped member 26 as an intake rectifier, it is not limited to this. That is, not only the first plate-like member 25 and the second plate-like member 26 but also a large number of plate-like members are arranged, and the first front edge 23d and the second front edge 23e of the intake control valve 20 are the same as in FIG. When they are at different positions, the first plate-like member and the second plate-like member need only be continuous to these positions. In this way, the gas flow can be appropriately stabilized even at the intermediate opening of the intake control valve 20.

本実施形態によれば、吸気制御弁２０は、弁体２３の他端側の幅方向のいずれか一方（図４，５では右側）にスワール発生用切り欠き２３ｃが形成され、スワール発生用切り欠き２３ｃが形成されていない他端側の前縁である第１前縁２３ｄと、スワール発生用切り欠き２３ｃが形成されている他端側の前縁である第２前縁２３ｅと、を有するスワール制御弁である一方、吸気整流体は、少なくとも、吸気制御弁２０の所定回動位置において、吸気制御弁２０の第１前縁２３ｄに連続する第１板状部材２５と、第２前縁２３ｅに連続する第２板状部材２６と、を有する。このため、吸気制御弁２０の開閉位置に応じて強いスワール流（ガス流動）を発生させることができる。   According to the present embodiment, the intake control valve 20 has a swirl generation notch 23c formed in one of the other ends of the valve body 23 in the width direction (the right side in FIGS. 4 and 5). A first front edge 23d which is a front edge on the other end side where the notch 23c is not formed, and a second front edge 23e which is a front edge on the other end side where the notch 23c for swirl generation is formed. While the swirl control valve, the intake rectifier includes a first plate-like member 25 continuous with the first front edge 23d of the intake control valve 20 and a second front edge at least at a predetermined rotational position of the intake control valve 20. And a second plate-like member 26 continuing to 23e. For this reason, a strong swirl flow (gas flow) can be generated according to the open / close position of the intake control valve 20.

また本実施形態によれば、第１板状部材２５は、吸気制御弁２０の全閉時において、吸気制御弁２０の第２前縁２３ｅに連続する。このため、吸気制御弁２０の全閉時において強いスワール流を発生させることができる。
次に、本発明の第３の実施形態について図６を用いて説明する。
本実施形態では、吸気整流体をハニカム構造としたハニカム部材３１として形成している。すなわち、ハニカム部材３１は、複数の横板状部材および縦板状部材によりハニカム構造とすることで、吸入空気の整流作用を十分に確保している。 Further, according to the present embodiment, the first plate-like member 25 continues to the second front edge 23e of the intake control valve 20 when the intake control valve 20 is fully closed. For this reason, a strong swirl flow can be generated when the intake control valve 20 is fully closed.
Next, a third embodiment of the present invention will be described with reference to FIG.
In this embodiment, the air intake rectifier is formed as a honeycomb member 31 having a honeycomb structure. That is, the honeycomb member 31 has a honeycomb structure with a plurality of horizontal plate-like members and vertical plate-like members, thereby sufficiently ensuring the rectifying action of the intake air.

この場合、吸気制御弁２０は、前述の第１実施形態にて説明したフラップ弁と同じ構成となっており、フラップ弁の他端側の前縁２３ｂがハニカム部材３１と連続するように構成されている。
すなわち、吸気制御弁２０が吸気通路１３を閉じるときにおいて、ハニカム部材３１の上流側が、吸気制御弁２０の弁体２３の他端側の前縁２３ｂと連続する構成となっている。 In this case, the intake control valve 20 has the same configuration as the flap valve described in the first embodiment, and the front edge 23b on the other end side of the flap valve is configured to be continuous with the honeycomb member 31. ing.
That is, when the intake control valve 20 closes the intake passage 13, the upstream side of the honeycomb member 31 is continuous with the front edge 23 b on the other end side of the valve body 23 of the intake control valve 20.

本実施形態によれば、吸気整流体は、ハニカム構造（ハニカム部材３１）となっている。このため、十分な吸入空気の整流が可能となる。そして、運転条件に応じて弁体２３の前縁２３ｂの位置を適切に変えることで、安定してガス流動を生成することができ、大幅なエミッションの低減および燃費向上ができる。   According to this embodiment, the intake rectifier has a honeycomb structure (honeycomb member 31). For this reason, sufficient rectification | straightening of intake air is attained. Further, by appropriately changing the position of the front edge 23b of the valve body 23 according to the operating conditions, it is possible to stably generate a gas flow, and to significantly reduce emission and improve fuel efficiency.

第１の実施形態に係る吸気装置を示す構成図The block diagram which shows the air intake device which concerns on 1st Embodiment 吸気通路の断面図Cross section of intake passage 吸気通路の断面図Cross section of intake passage 第２の実施形態において吸気制御弁の全閉時における状態を示す図The figure which shows the state at the time of a fully closed intake control valve in 2nd Embodiment 第２の実施形態において吸気制御弁の所定開度における状態を示す図The figure which shows the state in the predetermined opening degree of the intake control valve in 2nd Embodiment. 第３の実施形態に係る吸気通路の断面図Sectional drawing of the intake passage which concerns on 3rd Embodiment

符号の説明Explanation of symbols

１０ 吸気ポート
１２ 吸気マニホールド
１３ 吸気通路
１６ スロットルバルブ
２０ 吸気制御弁
２１ 格納部
２２ 弁軸
２３ 弁体
２３ａ 弁体（吸気制御弁）の一端部
２３ｂ 弁体の他端側前縁
２３ｃ スワール発生用切り欠き
２３ｄ 第１前縁
２３ｅ 第２前縁
２４ アクチュエータ
２５ 第１板状部材
２６ 第２板状部材
２７ 燃料噴射弁
３１ ハニカム部材 DESCRIPTION OF SYMBOLS 10 Intake port 12 Intake manifold 13 Intake passage 16 Throttle valve 20 Intake control valve 21 Storage part 22 Valve shaft 23 Valve body 23a One end part 23b of a valve body (intake control valve) The other end side front edge 23c of a valve body Notch 23d First front edge 23e Second front edge 24 Actuator 25 First plate member 26 Second plate member 27 Fuel injection valve 31 Honeycomb member

Claims (7)

吸気通路の通路壁近傍位置に配設された弁軸と、該弁軸に一端部を固定されて弁軸回りを回動する弁体とを有し、該弁軸の回動位置に応じてガス流動を制御する吸気制御弁と、
前記吸気制御弁の複数の回動位置での前記弁体の他端側の各位置から、吸入空気の流れ方向に延在する複数の板状部材から構成される吸気整流体と、
を有することを特徴とする内燃機関の吸気装置。 A valve shaft disposed in the vicinity of the passage wall of the intake passage, and a valve body having one end fixed to the valve shaft and rotating around the valve shaft, and depending on a rotation position of the valve shaft An intake control valve for controlling gas flow;
An intake air rectifier comprising a plurality of plate-like members extending in the flow direction of intake air from each position on the other end side of the valve body at a plurality of rotational positions of the intake control valve;
An intake device for an internal combustion engine, comprising: 前記吸気制御弁は、前記弁体の他端側の幅方向のいずれか一方にスワール発生用切り欠きが形成され、前記スワール発生用切り欠きが形成されていない他端側の前縁である第１前縁と、前記スワール発生用切り欠きが形成されている他端側の前縁である第２前縁と、を有するスワール制御弁である一方、
前記吸気整流体は、少なくとも、前記吸気制御弁の所定回動位置において、前記吸気制御弁の前記第１前縁に連続する第１板状部材と、前記第２前縁に連続する第２板状部材と、
を有することを特徴とする請求項１記載の内燃機関の吸気装置。 The intake control valve is a front edge on the other end side where a notch for swirl generation is formed in one of the width directions on the other end side of the valve body, and the notch for swirl generation is not formed. A swirl control valve having one front edge and a second front edge that is a front edge on the other end side where the notch for generating the swirl is formed,
The intake rectifier includes a first plate-like member continuous to the first front edge of the intake control valve and a second plate continuous to the second front edge at least at a predetermined rotation position of the intake control valve. A member,
The intake device for an internal combustion engine according to claim 1, comprising: 前記第１板状部材は、前記吸気制御弁の全閉時において、前記吸気制御弁の前記第２前縁に連続することを特徴とする請求項２記載の内燃機関の吸気装置。   The intake device for an internal combustion engine according to claim 2, wherein the first plate-like member is continuous with the second front edge of the intake control valve when the intake control valve is fully closed. 前記吸気整流体は、ハニカム構造となっていることを特徴とする請求項１記載の内燃機関の吸気装置。   The intake device for an internal combustion engine according to claim 1, wherein the intake rectifier has a honeycomb structure. 前記吸気整流体の下流側は、吸気通路に配置された燃料噴射弁の近傍まで延びて、そこに切り欠きが形成されていることを特徴とする請求項１〜請求項４のいずれか１つに記載の内燃機関の吸気装置。   The downstream side of the intake air rectifier extends to the vicinity of a fuel injection valve disposed in the intake passage, and a notch is formed therein. An intake device for an internal combustion engine according to claim 1. 前記吸気整流体の下流側の切り欠きは、前記燃料噴射弁からの燃料噴霧形状に対応して形成されていることを特徴とする請求項５記載の内燃機関の吸気装置。   6. An intake device for an internal combustion engine according to claim 5, wherein a notch on the downstream side of the intake rectifier is formed corresponding to a fuel spray shape from the fuel injection valve. 前記吸気通路壁の一部を切り欠いて、前記吸気制御弁を格納する格納部を形成したことを特徴とする請求項１〜請求項６のいずれか１つに記載の内燃機関の吸気装置。   The intake device for an internal combustion engine according to any one of claims 1 to 6, wherein a storage portion for storing the intake control valve is formed by cutting out a part of the intake passage wall.
JP2004259650A 2004-09-06 2004-09-07 Intake device for internal combustion engine Expired - Fee Related JP4412119B2 (en)

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EP05019374A EP1632659A3 (en) 2004-09-06 2005-09-06 Internal combustion engine air intake structure

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009102994A (en) * 2007-10-19 2009-05-14 Denso Corp Intake control device of internal combustion engine
JP2011012617A (en) * 2009-07-03 2011-01-20 Denso Corp Intake control device for internal combustion engine
WO2018235639A1 (en) * 2017-06-19 2018-12-27 カルソニックカンセイ株式会社 Air intake port

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009102994A (en) * 2007-10-19 2009-05-14 Denso Corp Intake control device of internal combustion engine
JP2011012617A (en) * 2009-07-03 2011-01-20 Denso Corp Intake control device for internal combustion engine
WO2018235639A1 (en) * 2017-06-19 2018-12-27 カルソニックカンセイ株式会社 Air intake port

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