JP4529297B2 - Negative pressure extraction structure of intake manifold - Google Patents

Negative pressure extraction structure of intake manifold Download PDF

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Publication number
JP4529297B2
JP4529297B2 JP2001058838A JP2001058838A JP4529297B2 JP 4529297 B2 JP4529297 B2 JP 4529297B2 JP 2001058838 A JP2001058838 A JP 2001058838A JP 2001058838 A JP2001058838 A JP 2001058838A JP 4529297 B2 JP4529297 B2 JP 4529297B2
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Japan
Prior art keywords
negative pressure
intake manifold
pressure extraction
runners
runner
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Expired - Fee Related
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JP2001058838A
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JP2002256991A (en
Inventor
隆 茶谷
俊男 林
正夫 井野
哲爾 山中
浩治 松浦
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Denso Corp
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Denso Corp
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    • 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
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10229—Fluid connections to the air intake system; their arrangement of pipes, valves or the like the intake system acting as a vacuum or overpressure source for auxiliary devices, e.g. brake systems; Vacuum chambers
    • 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
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10072—Intake runners

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
  • Measuring Fluid Pressure (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明はインテークマニホールドの負圧取出し構造に関する。詳しくは、インテークマニホールドにマスターブレーキや圧力センサ等の各種負圧機器に負圧を供給するためのバキュームタンクを設けたインテークマニホールドの負圧取出し構造に関する。
【０００２】
【従来の技術】
従来、ガソリン内燃機関の樹脂製インテークマニホールドの負圧取出し構造として、例えば、特開平１０−６８３６１号公報に開示されたものがある。これは、図４に示すように、インテークマニホールド１を上下に分割して上部分割体２と下部分割体３とし、各分割体２，３には、その両側にフランジ４，５を形成し、この両分割体の各フランジ４，５を対向させ振動溶着により互いに接合させることによって各分割体２，３を一体化させたものである。
【０００３】
そして吸気圧センサ取付け用のパイプ６は上部分割体のフランジ４に一体に形成されている。なお、符号７はスロットルボデーへの取付け用フランジ、８はシリンダヘッドへの取付けフランジ、９はシリンダヘッドの吸気ポートに接続される開口である。
【０００４】
【発明が解決しようとする課題】
上記図４で説明したような、従来のインテークマニホールドでは負圧取出し位置を自由に選ぶことができる。しかし、最近では、吸気系のモジュール化が進む中で、各種機能品をインテークマニホールドに集中搭載する事が進み、通常負圧を取り出すポートが設定されるサージタンクにもその搭載スペースを確保しようとし、また、周りのエンジン搭載部品との干渉もあり、負圧ポートの設定が難しくなってきている。とくにサージタンクの外周をランナーで囲むような構造のインテークマニホールドにおいては顕著であり負圧ホースの取付け作業性、ホースの取り回しも困難になるという問題がある。
【０００５】
本発明は上記従来の問題点に鑑み、ランナー間のスペースを利用して負圧取り出し用のポートを設定し、負圧ホースの組付け作業の容易性、及びホースの取り回しの容易性を確保したインテークマニホールドの負圧取出し構造を実現することを目的とする。
【０００６】
【課題を解決するための手段】
上記目的を達成するために、本発明の請求項１は、複数のランナーが設けられたインテークマニホールドにおいて、前記複数のランナーに、前記ランナーの壁の一部が壁の一部を兼ねるように箱体を一体形成し、該箱体に負圧取り出し用ポートを設けると共に、前記箱体内と前記ランナーとを連通する連通孔を穿設して、前記箱体を負圧取出し用のバキュームタンクとしたことを特徴とする。また、請求項２は、複数のランナーが設けられたインテークマニホールドにおいて、前記複数のランナーに、前記複数のランナーにおける各ランナーのそれぞれに負圧取り出し用ポートを備えた箱体を前記各ランナーの壁の一部が前記箱体の壁の一部を兼ねるように溶着し、該箱体内と前記各ランナーとを連通する連通孔を穿設し、前記箱体を負圧取出し用のバキュームタンクとしたことを特徴とする。また、請求項３は、上記インテークマニホールドが樹脂で形成されていることを特徴とする。
【０００７】
この構成を採ることにより、負圧ホースの組付け作業の容易性、及びホースの取り回しの容易性を確保したインテークマニホールドの負圧取出し構造を実現することができる。
【０００８】
【発明の実施の形態】
図１乃至図３は本発明のインテークマニホールドの負圧取出し構造の実施の形態を示す図であり、図１は斜視図、図２はバキュームタンクの蓋を除去した状態を示す斜視図、図３は図１のＡ−Ａ線における断面図である。
【０００９】
本実施の形態は、図１に示すように複数のランナー２１のエンジン本体側となる一方の端部がフランジ２２に、吸気通路の上流側となる他方の端部がエアコネクタ（サージタンク）２３にそれぞれ接続して樹脂又は金属で形成されたインテークマニホールド２０において、湾曲した各ランナー２１の壁の湾曲外方側（反エンジン側）の部分を含んで箱体２４が設けられ、該箱体２４に負圧取り出し用ポート２５が設けられている。なお、前記箱体２４はインテークマニホールド２０と一体に形成しても、或いは箱体２４をインテークマニホールド２０とは別体で形成した後、インテークマニホールド２０に溶接により溶着等してもよい。
【００１０】
また、図２に示すように箱体２４の中に現れている各ランナー２１壁にそれぞれランナー２１の内部と箱体２４とを連通する連通孔２６が穿設されている。さらに、図１のように箱体２４の前面の開口には蓋２７が図示なきねじ等により固定的あるいは着脱可能に取付けられ、箱体２４を密閉してバキュウムタンクとしている。
【００１１】
このように構成された本実施の形態は、インテークマニホールド２０から連通孔２６を通って箱体２４（バキュウムタンク）内に負圧が生成され、負圧取り出し用ポート２５からマスターブレーキや圧力センサ等の各種機器に負圧を供給することができる。そして、本実施の形態は、各ランナー２１の外側のデッドスペースを利用したことで、負圧ポートの設定が困難な形状のインテークマニホールドでも負圧取出ポートを集中させたことで負圧ホースの取廻しが容易となる。
【００１２】
また、ランナー外側の組付けスペースが広い場所に負圧取出しポートを設定することが可能であり、負圧ホースの組付けが容易となる。さらに、連通孔を複数設けたことにより、各ランナー部に生成する吸気脈動（圧力変動）がバキュームタンク内で平均化され、安定した負圧が取り出せる。また、ランナー上流の吸気通路（エアコネクタ等）にＥＧＲガスが導入され、仮に連通孔の一部の孔が詰まったとしても、他の孔によりバキュームタンク内の負圧を保ことができるため、負圧性能に不具合は発生しない。
【００１３】
【発明の効果】
本発明のインテークマニホールドの負圧取出し構造に依れば、ランナー間のデッドスペースを利用してバキュームタンクを設けたことにより、他の搭載部品に干渉することなく、負圧取り出し用ポートを設けることができ、負圧ホースの組付けの容易性、及び負圧ホースの取廻しの容易性が確保できる。
【図面の簡単な説明】
【図１】本発明のインテークマニホールドの負圧取出し構造の実施の形態を示す斜視図である。
【図２】本発明のインテークマニホールドの負圧取出し構造の実施の形態のバキュームタンクの蓋を除去した状態を示す斜視図である。
【図３】図１のＡ−Ａ線における断面図である。
【図４】従来のインテークマニホールドの１例を示す図で、（ａ）は側面図、（ｂ）は（ａ）正面図である。
【符号の説明】
２０…インテークマニホールド
２１…ランナー
２２…フランジ部
２３…エアコネクタ（サージタンク）
２４…箱体（バキュウムタンク）
２５…負圧取り出し用ポート
２６…連通孔
２７…蓋[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a negative pressure extraction structure for an intake manifold. More specifically, the present invention relates to a negative pressure take-out structure of an intake manifold provided with a vacuum tank for supplying negative pressure to various negative pressure devices such as a master brake and a pressure sensor.
[0002]
[Prior art]
Conventionally, as a negative pressure extraction structure of a resin intake manifold of a gasoline internal combustion engine, for example, there is one disclosed in JP-A-10-68361. As shown in FIG. 4, the intake manifold 1 is vertically divided into an upper divided body 2 and a lower divided body 3, and each divided body 2, 3 is formed with flanges 4, 5 on both sides thereof. Each of the divided bodies 2 and 3 is integrated by opposing the flanges 4 and 5 of both divided bodies and joining them together by vibration welding.
[0003]
The pipe 6 for attaching the intake pressure sensor is formed integrally with the flange 4 of the upper divided body. Reference numeral 7 denotes a flange for attachment to the throttle body, 8 denotes a flange for attachment to the cylinder head, and 9 denotes an opening connected to the intake port of the cylinder head.
[0004]
[Problems to be solved by the invention]
In the conventional intake manifold as described in FIG. 4 above, the negative pressure extraction position can be freely selected. However, recently, as modularization of the intake system has progressed, various functional products have been centrally mounted on the intake manifold, and an attempt has been made to secure the mounting space in the surge tank that is normally equipped with a port for taking out negative pressure. In addition, it is difficult to set the negative pressure port due to interference with surrounding engine components. In particular, the intake manifold has a structure in which the outer periphery of the surge tank is surrounded by a runner, and there is a problem that it is difficult to attach the negative pressure hose and to manage the hose.
[0005]
In view of the above-described conventional problems, the present invention sets a port for taking out negative pressure using a space between runners, and ensures the ease of assembling the negative pressure hose and the ease of handling the hose. The objective is to realize a negative pressure extraction structure for the intake manifold.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, claim 1 of the present invention is an intake manifold provided with a plurality of runners, wherein the plurality of runners have a box such that a part of the runner wall also serves as a part of the wall. The body is integrally formed, and a negative pressure take-out port is provided in the box, and a communication hole for communicating the box and the runner is formed, whereby the box is used as a vacuum tank for taking out the negative pressure. It is characterized by that. Further, according to claim 2, in an intake manifold provided with a plurality of runners, the multiple runners, a box with a negative pressure port for taking out each of the respective runners of the plurality of runners said walls of each runner Are welded so that a part of the wall also serves as a part of the wall of the box, and a communication hole for communicating the box and the runners is formed. The box is used as a vacuum tank for taking out negative pressure. It is characterized by that. According to a third aspect of the present invention, the intake manifold is made of resin.
[0007]
By adopting this configuration, it is possible to realize a negative pressure take-out structure of the intake manifold that ensures the ease of assembling the negative pressure hose and the ease of handling the hose.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
FIGS. 1 to 3 are views showing an embodiment of a negative pressure extraction structure for an intake manifold according to the present invention, FIG. 1 is a perspective view, FIG. 2 is a perspective view showing a state in which a vacuum tank cover is removed, and FIG. FIG. 2 is a cross-sectional view taken along line AA in FIG.
[0009]
In the present embodiment, as shown in FIG. 1, one end of the plurality of runners 21 on the engine body side is the flange 22, and the other end on the upstream side of the intake passage is the air connector (surge tank) 23. In the intake manifold 20 formed of resin or metal connected to each other, a box body 24 is provided including a curved outer side (anti-engine side) portion of the curved wall of each runner 21. Is provided with a port 25 for taking out negative pressure. The box body 24 may be formed integrally with the intake manifold 20, or the box body 24 may be formed separately from the intake manifold 20 and then welded to the intake manifold 20 by welding.
[0010]
In addition, as shown in FIG. 2, communication holes 26 are formed in the walls of the runners 21 appearing in the box body 24 to communicate the interior of the runner 21 with the box body 24. Further, as shown in FIG. 1, a lid 27 is fixedly or detachably attached to the opening on the front surface of the box body 24 by means of an unillustrated screw or the like, and the box body 24 is sealed to form a vacuum tank.
[0011]
In this embodiment configured as described above, a negative pressure is generated in the box body 24 (vacuum tank) from the intake manifold 20 through the communication hole 26, and a master brake, a pressure sensor, etc. Negative pressure can be supplied to various devices. In this embodiment, since the dead space outside the runners 21 is used, the negative pressure take-off port can be removed by concentrating the negative pressure take-out ports even in the intake manifold having a shape in which it is difficult to set the negative pressure port. Easy to turn.
[0012]
Further, the negative pressure take-out port can be set in a place where the assembly space outside the runner is wide, and the negative pressure hose can be easily assembled. Further, by providing a plurality of communication holes, the intake pulsation (pressure fluctuation) generated in each runner is averaged in the vacuum tank, and a stable negative pressure can be taken out. In addition, even if EGR gas is introduced into the intake passage (air connector etc.) upstream of the runner and a part of the communication hole is clogged, the negative pressure in the vacuum tank can be maintained by the other hole. There is no problem with negative pressure performance.
[0013]
【The invention's effect】
According to the negative pressure extraction structure of the intake manifold of the present invention, the vacuum tank is provided using the dead space between the runners, thereby providing the negative pressure extraction port without interfering with other mounted parts. It is possible to secure the ease of assembly of the negative pressure hose and the ease of handling the negative pressure hose.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a negative pressure extraction structure for an intake manifold according to the present invention.
FIG. 2 is a perspective view showing a state in which a vacuum tank cover of the embodiment of the negative pressure take-out structure of the intake manifold of the present invention is removed.
3 is a cross-sectional view taken along line AA in FIG.
4A and 4B are diagrams showing an example of a conventional intake manifold, in which FIG. 4A is a side view, and FIG. 4B is a front view of FIG.
[Explanation of symbols]
20 ... Intake manifold 21 ... Runner 22 ... Flange 23 ... Air connector (surge tank)
24 ... Box (vacuum tank)
25 ... Negative pressure extraction port 26 ... Communication hole 27 ... Lid

Claims (3)

複数のランナーが設けられたインテークマニホールドにおいて、
前記複数のランナーに、前記ランナーの壁の一部が壁の一部を兼ねるように箱体を一体形成し、
該箱体に負圧取り出し用ポートを設けると共に、前記箱体内と前記ランナーとを連通する連通孔を穿設して、前記箱体を負圧取出し用のバキュームタンクとしたことを特徴とするインテークマニホールドの負圧取出し構造。In the intake manifold with multiple runners,
In the plurality of runners, a box is integrally formed so that a part of the wall of the runner also serves as a part of the wall,
Intake characterized in that a negative pressure extraction port is provided in the box body and a communication hole for communicating the box body and the runner is formed to make the box body a vacuum tank for negative pressure extraction. Manifold negative pressure extraction structure. 複数のランナーが設けられたインテークマニホールドにおいて、
前記複数のランナーに、前記複数のランナーにおける各ランナーのそれぞれに負圧取り出し用ポートを備えた箱体を前記各ランナーの壁の一部が前記箱体の壁の一部を兼ねるように溶着し、該箱体内と前記各ランナーとを連通する連通孔を穿設し、前記箱体を負圧取出し用のバキュームタンクとしたことを特徴とするインテークマニホールドの負圧取出し構造。In the intake manifold with multiple runners,
The plurality of runners are welded to each runner in the plurality of runners so that each runner has a negative pressure extraction port so that a part of the wall of each runner also serves as a part of the wall of the box. A negative pressure extraction structure for an intake manifold, wherein a communication hole for communicating the box and the runners is formed, and the box is used as a vacuum tank for negative pressure extraction. 上記インテークマニホールドが樹脂で形成されていることを特徴とする請求項１または２に記載のインテークマニホールドの負圧取出し構造。 The intake manifold negative pressure extraction structure according to claim 1 or 2, wherein the intake manifold is made of resin.
JP2001058838A 2001-03-02 2001-03-02 Negative pressure extraction structure of intake manifold Expired - Fee Related JP4529297B2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004013766B4 (en) * 2004-03-20 2010-05-06 Audi Ag Air intake system
KR100579284B1 (en) 2004-07-06 2006-05-11 현대자동차주식회사 Variable intake system of vehicle
KR100733382B1 (en) 2006-04-10 2007-06-29 말레동현필터시스템 주식회사 Automobile inlet manifold the vacuum tank is formed with all
US8677967B2 (en) * 2010-01-28 2014-03-25 Aisin Seiki Kabushiki Kaisha Intake manifold having negative pressure relief

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61181869U (en) * 1985-05-02 1986-11-13

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61181869U (en) * 1985-05-02 1986-11-13

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