JPS62110722A - Air cleaner for internal combustion engine - Google Patents

Air cleaner for internal combustion engine

Info

Publication number
JPS62110722A
JPS62110722A JP24864985A JP24864985A JPS62110722A JP S62110722 A JPS62110722 A JP S62110722A JP 24864985 A JP24864985 A JP 24864985A JP 24864985 A JP24864985 A JP 24864985A JP S62110722 A JPS62110722 A JP S62110722A
Authority
JP
Japan
Prior art keywords
space
air
pipe
internal combustion
combustion engine
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.)
Pending
Application number
JP24864985A
Other languages
Japanese (ja)
Inventor
Hideki Obayashi
秀樹 大林
Hiroyuki Tsuge
柘植 洋之
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
NipponDenso Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Priority to JP24864985A priority Critical patent/JPS62110722A/en
Publication of JPS62110722A publication Critical patent/JPS62110722A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To prevent the disturbance of a fuel-air ratio characteristic of a carburetor of the titled engine due to the resonance of the air by forming a center tube which has a space at an inside thereof in the center part of a filter element, and by using said space of the center tube as a resonator, thereby changing an acoustic characteristics of a suction system of the titled engine. CONSTITUTION:The air cleaner 1 comprises a hollow hausing formed of a cap 2 having an air inlet 2a and a case 3 having a shallow pan. The filter element assembly 4 is arranged in the hausing, and an outlet of the air 3a is disposed in the hollow part of a bottom wall of the case 3. The space 43b is formed at the bottom plate 43a of a boss part 43, and a pipe 43c is provided with said space 43b. The resonator is formed of said space 43b and said pipe 43c. As the volume of the space 43b, the length and the sectional area of the pipe 43c are designed so as to synchronize to an acoustic frequency generating in the suction system of the titled engine, the disturbance of controlling the air-fuel ratio on the carburetor of the titled engine due to the resonance phenomenon in said suction system does not occur.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は内燃機関用空気清浄器に関するもので、主とし
て気化器付内燃機関の空燃比変動を防止する内燃機関用
空気清浄器に関するものである。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an air cleaner for an internal combustion engine, and mainly relates to an air cleaner for an internal combustion engine that prevents air-fuel ratio fluctuations in an internal combustion engine equipped with a carburetor. .

〔従来の技術〕[Conventional technology]

第5図に直列4気筒気化器(=J内燃機関の全開性能特
性を示す。図中Δ印は気化器上流に空気清浄器、および
吸気ダクト(空気清浄器の空気取入口に接続されている
ダクト)が装着されない時の空燃比とトルクである。X
印は空気清浄器、吸気ダクトが装着された時(iffi
常車両が運転される状a)の特性であり、1600〜2
000rpm付近で、空燃比が薄くなり、トルクが大1
1目こ低下するという問題が生じている。この膣内は内
燃機関の回転速度と吸気系中の空気柱の共振現象により
、気化器の空燃比特性が乱されるためである。
Figure 5 shows the full-throttle performance characteristics of an in-line four-cylinder carburetor (= J internal combustion engine. In the figure, the Δ mark indicates an air purifier upstream of the carburetor, and an air intake duct (connected to the air intake of the air purifier). These are the air-fuel ratio and torque when the duct) is not installed.X
The mark indicates when the air purifier and intake duct are installed (iffi).
It is a characteristic of the condition a) in which the vehicle is normally driven, and is 1600 to 2
At around 000 rpm, the air-fuel ratio becomes lean and the torque increases to 1.
A problem has arisen in which the value decreases by one eye. This is because the air-fuel ratio characteristics of the carburetor are disturbed within the vagina due to the rotational speed of the internal combustion engine and the resonance phenomenon of the air column in the intake system.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

この対策としては、空気?a浄器に***をあけたり、新
たにレゾネータ(共鳴器)を設けたりして吸気系の音響
特性を変えて対策しているが、対策ア(不充分であった
り、コストアンプや取り付はスペースが拡大するという
問題が生じている。
As a countermeasure for this, air? Countermeasures have been taken by changing the acoustic characteristics of the intake system by making small holes in the air purifier and installing new resonators, but countermeasures (A) are insufficient, cost amplifiers and installation are not sufficient. The problem is that the space is expanding.

〔問題点を解決するだめの手段〕[Failure to solve the problem]

本発明は上記の点に鑑み、濾過エレメントの中心部に、
内側に空間を形成した中心筒を有し、該?jiAエレメ
ントをハウジング内に収容し、前記中心筒の前記空間を
前記ハウジング内の空間部に連通し、該中心筒の前記空
間をレゾネータとした構成を具備したものである。
In view of the above points, the present invention includes a
It has a central cylinder with a space inside. jiA element is accommodated in a housing, the space of the center cylinder is communicated with the space in the housing, and the space of the center cylinder is used as a resonator.

〔作用〕[Effect]

本発明においては濾過エレメントの中心筒の内側空間を
レゾネータとして機能させているため、空気清浄器内部
のデッドスペースを有効に利用することができる。
In the present invention, since the inner space of the central cylinder of the filter element functions as a resonator, the dead space inside the air purifier can be effectively utilized.

〔発明の効果〕〔Effect of the invention〕

故に、本発明によれば、レゾネータの取付スペースに困
るといった問題をなくすことができ、従って、小型化を
達成することができる。
Therefore, according to the present invention, it is possible to eliminate the problem of insufficient mounting space for the resonator, and therefore, miniaturization can be achieved.

〔実施例〕〔Example〕

以下本発明を具体的実施例により説明する。 The present invention will be explained below using specific examples.

第1図並びに第2図において、空気清浄器1は空気取入
口2aを有するキャップ2と浅鍋状のケース3とにより
形成される中空なハ1:ノジングと、このハウジング内
に収納された空気清浄用が過エレメント組付体(以下1
”ti−+過工1/メンl−!f、11立体」と呼ぶ)
4とから成り、ケース;(の底壁の中空には空気出口3
aが設LJられていイ)。そして、空気出口3aは気化
器5のエアポーン部52】にガスノノーソト8を介して
接続される。
In FIGS. 1 and 2, an air purifier 1 has a hollow nozzing formed by a cap 2 having an air intake port 2a and a shallow pot-shaped case 3, and air stored in the housing. Cleaning element assembly (hereinafter referred to as 1)
(Called "ti-+overwork 1/menl-!f, 11 solid")
The case consists of 4 air outlets 3 in the hollow bottom wall of the case;
a is established LJ). The air outlet 3a is connected to an air pom portion 52 of the vaporizer 5 via a gas outlet 8.

濾過エレメント川立体4は図に明示する、Lうに、多数
の同心円状のひだを有する1g状の1ft過エレメント
41と、この濾過エレメント41の外周部と内周部とを
支承する下側端+lQ即らリング42及び上側端板即ち
ボス部43と、これらのリング42とボス部43とを連
結して両11間のr過エレメント41は傘状に支持する
スポーク44とを有する。
The filtration element river body 4 is clearly shown in the figure, and includes a 1g-shaped 1ft filtration element 41 having a large number of concentric folds, and a lower end +lQ that supports the outer and inner circumferences of this filtration element 41. That is, the ring 42 and the upper end plate, that is, the boss part 43, and the spokes 44 that connect the ring 42 and the boss part 43 and support the r-shaped element 41 between the two rings 11 in an umbrella shape.

リング42は円筒壁部42,1とその上端から半径方向
外方に突出する環状のフランジ42bとから成る。ボス
部43は下方にl;rlいた開し1端を有する逆1m状
のもので、開口端にはボス部底板43aが接着剤等によ
り取り付けられ空間43bを形成し、さらにボス部底板
43aにはパイプ43cが接着剤等により取り付けられ
、この空間43bとパイプ43Cによりレゾネータを成
す。なお、ボス43、底板43aで中心筒を構成する。
The ring 42 consists of a cylindrical wall 42,1 and an annular flange 42b projecting radially outward from its upper end. The boss part 43 has an inverted 1 m shape with one open end extending l; A pipe 43c is attached with adhesive or the like, and the space 43b and the pipe 43C form a resonator. Note that the boss 43 and the bottom plate 43a constitute a central cylinder.

パイプ43Cはハウジング内の空間部9に連通している
The pipe 43C communicates with the space 9 within the housing.

が過エレメント41の作り方については例えば特開昭5
7−140617号公報を参照されたい。
For information on how to make the overpass element 41, see, for example, Japanese Patent Application Laid-open No. 5
Please refer to the publication No. 7-140617.

空気清浄器1のキャンプ2の中央には開口があり、この
開口の内周縁にシール2bを介してスリーブ2Cが嵌合
している。さらにボス部底板の中央には開口があり、こ
の開口の内周縁にシール4dを介してスリーブ4eが嵌
合している。
There is an opening in the center of the camp 2 of the air purifier 1, and a sleeve 2C is fitted to the inner peripheral edge of this opening via a seal 2b. Further, there is an opening in the center of the bottom plate of the boss portion, and a sleeve 4e is fitted to the inner peripheral edge of this opening via a seal 4d.

空気清浄器1を内燃機関に取付ける際には、気化器5の
エアホーン部5aから上方に突出する長い植込みポルト
6をケース3の空気出口3a、ボス43の中央間[]及
びスリーブ2c、ボス底板に設けられたスリーブ4eに
通し、その突出端に蝶ナツト7を螺合させて締めればシ
ール2bの下面がボス43の上面、及びシール4dの下
面が植込みボルトの途中に設&Jられた平面部を有する
突起6aの上面に気密に密着する。
When installing the air purifier 1 to an internal combustion engine, the long implanted port 6 protruding upward from the air horn portion 5a of the carburetor 5 is inserted between the air outlet 3a of the case 3, the center of the boss 43, the sleeve 2c, and the boss bottom plate. When the lower surface of the seal 2b is connected to the upper surface of the boss 43, and the lower surface of the seal 4d is connected to the flat part provided in the middle of the stud bolt, the lower surface of the seal 2b will be connected to the upper surface of the boss 43, and the lower surface of the seal 4d will be connected to the flat part provided in the middle of the stud bolt. The upper surface of the protrusion 6a has an airtight seal.

上記の構成において、内燃機関が運転され、気化器スロ
ットバルブが全開になると、空気清浄器1、空気取入口
2a、さらには図示しない吸気ダクトが接続されている
ため、これら吸気系内の共振現象により、気化器空燃比
制御か乱されるのが一般である。しかし、ボス43の空
間43bとパイプ43cによりレゾネータが構成されて
いるので、前記で述べた吸気系内の共振現象を減衰する
ことができる。なおボス43の空間43bの容積、パイ
プ43cの長さ、断面積は吸気系で生じている共振周波
数(吸気系1機関仕様によって変化する)に同期するよ
う、また最適の減衰量になるよう設計しているのは言う
までもない。第5図にその効果を示すが、図中・印に示
すように空気清浄器および吸気ダクトの両方ともなしと
同等の空燃比制御値に戻すことができる。
In the above configuration, when the internal combustion engine is operated and the carburetor slot valve is fully opened, resonance occurs in the intake system because the air purifier 1, the air intake port 2a, and the intake duct (not shown) are connected. This generally disturbs the carburetor air-fuel ratio control. However, since the space 43b of the boss 43 and the pipe 43c constitute a resonator, the resonance phenomenon in the intake system described above can be attenuated. The volume of the space 43b of the boss 43, the length of the pipe 43c, and the cross-sectional area are designed to synchronize with the resonance frequency occurring in the intake system (varies depending on the specifications of the intake system 1 engine) and to provide the optimum amount of damping. Needless to say, it is. The effect is shown in FIG. 5, and as shown in the figure, the air-fuel ratio control value can be returned to the same value as without both the air purifier and the intake duct.

第3図および第4図に他の実施例を示す。ボス43の空
間43bに接続されるパイプ43Cをスポーク44に沿
って設は固着する構成としている。
Other embodiments are shown in FIGS. 3 and 4. A pipe 43C connected to the space 43b of the boss 43 is installed along the spoke 44 and fixed.

この構成とすることで、振動によるパイプ43Cの破損
を防止することができる。
With this configuration, it is possible to prevent damage to the pipe 43C due to vibration.

なお、上記各実施例においては、パイプ43Cを濾過エ
レメント41のクリーンサイドに設けたがダスティーサ
イドに設けてもよく、またパイプ43Cの開口端を空気
取入口2aの反対側に向けてもよい。
In each of the above embodiments, the pipe 43C is provided on the clean side of the filter element 41, but it may be provided on the dusty side, or the open end of the pipe 43C may be directed to the opposite side of the air intake port 2a.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の一実施例を示すもので、第2図のB−
B断面図、第2図は第1図のA−A断面図、第3図は本
発明の他の実施例を示すもので、第4図のC−C断面図
、第4図は第3図のD矢視図、第5図は本発明の詳細な
説明と供する特性図である。 2・・・キャンプ、3・・・ケース、9・・・空間部、
41・・・濾過エレメント、43・・・ボス部、43a
・・・底板。 43b・・・空間。 。」 第3図 し\J    44 二〉ジ°ンロ転敦(rpm ) 第5図
FIG. 1 shows an embodiment of the present invention, and B--B in FIG.
2 is a sectional view taken along line A-A in FIG. 1, FIG. 3 is a sectional view taken along line C-C in FIG. 4, and FIG. A view taken along arrow D in the figure and FIG. 5 are characteristic diagrams that provide a detailed explanation of the present invention. 2...camp, 3...case, 9...space,
41...Filtering element, 43...Boss part, 43a
···Bottom plate. 43b...Space. . ” Figure 3 \J 44 2〉Ginro rotation (rpm) Figure 5

Claims (1)

【特許請求の範囲】[Claims] ろ過エレメントの中心部に、内側に空間を形成した中心
筒を有し、該ろ過エレメントをハウジング内に収容し、
前記中心筒の前記空間を前記ハウジング内の空間部に連
通し、該中心筒の前記空間をレゾネータとしたことを特
徴とする内燃機関用空気清浄器。
The filtration element has a central cylinder with a space formed in the center thereof, and the filtration element is housed in a housing.
An air cleaner for an internal combustion engine, characterized in that the space of the center cylinder is communicated with a space in the housing, and the space of the center cylinder is used as a resonator.
JP24864985A 1985-11-06 1985-11-06 Air cleaner for internal combustion engine Pending JPS62110722A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24864985A JPS62110722A (en) 1985-11-06 1985-11-06 Air cleaner for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24864985A JPS62110722A (en) 1985-11-06 1985-11-06 Air cleaner for internal combustion engine

Publications (1)

Publication Number Publication Date
JPS62110722A true JPS62110722A (en) 1987-05-21

Family

ID=17181262

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24864985A Pending JPS62110722A (en) 1985-11-06 1985-11-06 Air cleaner for internal combustion engine

Country Status (1)

Country Link
JP (1) JPS62110722A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01213227A (en) * 1988-02-23 1989-08-28 Tadashi Koyake Ointment and solution
US5043000A (en) * 1987-09-18 1991-08-27 Toyo Roki Seizo K.K. Air cleaner element and method of manufacturing the same
US5783780A (en) * 1995-11-27 1998-07-21 Nissan Motor Co., Ltd Sound absorption structure
US6589643B2 (en) 2000-04-21 2003-07-08 Nissan Motor Co., Ltd. Energy conversion fiber and sound reducing material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5043000A (en) * 1987-09-18 1991-08-27 Toyo Roki Seizo K.K. Air cleaner element and method of manufacturing the same
JPH01213227A (en) * 1988-02-23 1989-08-28 Tadashi Koyake Ointment and solution
JPH0546323B2 (en) * 1988-02-23 1993-07-13 Tadashi Koyake
US5783780A (en) * 1995-11-27 1998-07-21 Nissan Motor Co., Ltd Sound absorption structure
US6589643B2 (en) 2000-04-21 2003-07-08 Nissan Motor Co., Ltd. Energy conversion fiber and sound reducing material

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