JPS601254Y2 - engine intake system - Google Patents

engine intake system

Info

Publication number
JPS601254Y2
JPS601254Y2 JP17906180U JP17906180U JPS601254Y2 JP S601254 Y2 JPS601254 Y2 JP S601254Y2 JP 17906180 U JP17906180 U JP 17906180U JP 17906180 U JP17906180 U JP 17906180U JP S601254 Y2 JPS601254 Y2 JP S601254Y2
Authority
JP
Japan
Prior art keywords
passage
intake
bimetal
air
outside air
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
Application number
JP17906180U
Other languages
Japanese (ja)
Other versions
JPS57101364U (en
Inventor
敬博 佐藤
Original Assignee
マツダ株式会社
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 マツダ株式会社 filed Critical マツダ株式会社
Priority to JP17906180U priority Critical patent/JPS601254Y2/en
Publication of JPS57101364U publication Critical patent/JPS57101364U/ja
Application granted granted Critical
Publication of JPS601254Y2 publication Critical patent/JPS601254Y2/en
Expired legal-status Critical Current

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  • Temperature-Responsive Valves (AREA)

Description

【考案の詳細な説明】 本考案はエンジンの吸気装置に関し、特に吸気温度をエ
ンジンの運転に最適な温度に一定に保つようにしたニシ
ジンの吸気装置に関するものである
l、1一般に、エンジンに供給す
る吸気の温度が低すぎると、アイシングが生じて失火し
、未燃焼ガスを多量に排出する一方、吸気温度が高すぎ
ると、エンジンの出力低下を来す等の問題があり、その
ため、吸気温度をエンジン運転に最適な温度に一定に保
つようカントロールする必要がある。
[Detailed description of the invention] The present invention relates to an engine air intake system, and in particular to Nishijin's air intake system that maintains the intake air temperature constant at the optimum temperature for engine operation.
l.1 In general, if the temperature of the intake air supplied to the engine is too low, icing will occur and misfire will occur, emitting a large amount of unburned gas, while if the intake air temperature is too high, it will cause a decrease in engine output, etc. There is a problem, so it is necessary to control the intake air temperature to keep it constant at the optimum temperature for engine operation.

このようなエンジンの吸気装置として、従来、例えばエ
アクリーナ上流の吸気通路に、:′外気を導入する外気
導入通路と排気熱で加熱された暖気を導入する暖気導入
通路とを合流せしめて接続するとともに、該両溝入通路
の合流部に両溝入通路の通路面積を互いに相反する方向
に開閉制御する制御ダンパを設け、該制御ダンパに吸気
温度に応じて伸縮作動するバイメタルを連結して、該バ
イメタルの作動により制御ダンパを開閉制御して、外気
導入通路の外気と暖気導入通路の暖気との導入割合を変
化させることにより、吸気温度を一定に保つように制御
するものが知られている。
Conventionally, as an intake system for such an engine, for example, in an intake passage upstream of an air cleaner, an outside air introduction passage that introduces outside air and a warm air introduction passage that introduces warm air heated by exhaust heat are merged and connected. A control damper for controlling opening and closing of the passage areas of both grooved passages in mutually opposite directions is provided at the confluence of the two grooved passages, and a bimetal that expands and contracts according to the intake air temperature is connected to the control damper. It is known to control the intake air temperature to be kept constant by controlling the opening and closing of a control damper through the operation of a bimetal to change the introduction ratio of outside air in an outside air introduction passage and warm air in a warm air introduction passage.

しかしながら、上記従来のもの番こおいては、正確な吸
気温度を検知するためにはバイメタルを両溝入通路の合
流部下流側の吸気通路に配置する必要があり、その場合
、制御ダン六をバイメタルに応動させるべく制御ダンパ
とバイメタルとをリンク機構等で連結しなければならず
、機構が複雑化するという問題がある。
However, in the above conventional model, in order to accurately detect the intake air temperature, it is necessary to place a bimetal in the intake passage downstream of the confluence of the double grooved passages, and in that case, the control damper In order to respond to the bimetal, the control damper and the bimetal must be connected by a link mechanism or the like, which poses a problem of complicating the mechanism.

そこで、本考案はかかる点に鑑み、外気および暖気導入
通路をエアクリーナ上流の吸気通路の吸気の流れと反対
方向の流れをなすように吸気通路に沿って設けるととも
に、該両溝入通路の下流端を上記吸気通路に接続し、該
吸気通路と両溝入通路との重なり合った部分に、吸気通
路内に配置せしめたバイメタルによって回転じて両溝入
通路の通路断面積を相反制御する回転制御弁を設け、上
記バイメタルの作動により回転制御弁を回転させて、上
記両溝入通路からの外気と暖気との導入割合を制御する
ようにすることにより、バイメタルと該バイメタルによ
って応動する回転制御弁とをほぼ同位置に配置するよう
にして、従来の如きリンク機構を要することなく簡単な
構造でもって正確な吸気温度の制御を可能としたエンジ
ンの吸気装置を提供せんとするものである。
In view of this, the present invention provides an outside air and warm air introduction passage along the intake passage so that the air flows in the opposite direction to the intake air flow in the intake passage upstream of the air cleaner, and at the downstream end of both the grooved passages. is connected to the above-mentioned intake passage, and the rotation control valve controls the cross-sectional area of the both grooved passages reciprocally by rotating with a bimetal disposed in the intake passage where the intake passage and both grooved passages overlap. is provided, and the rotation control valve is rotated by the operation of the bimetal to control the introduction ratio of outside air and warm air from the double grooved passage. It is an object of the present invention to provide an engine air intake device which enables precise control of intake air temperature with a simple structure without requiring a conventional link mechanism by arranging the two at substantially the same position.

以下、本考案を図面に示す実施例に基づいて詳細に説明
する。
Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

第1図において、1はエンジン、2は該エンジン1に接
続された吸気通路、3はエンジン1に接続された排気通
路であって、上記吸気通路2にはエアクリーナ4および
該エアクリーナ4下流に絞弁5を備えた気化器6が配設
されている。
In FIG. 1, 1 is an engine, 2 is an intake passage connected to the engine 1, 3 is an exhaust passage connected to the engine 1, and the intake passage 2 includes an air cleaner 4 and a throttle downstream of the air cleaner 4. A vaporizer 6 with a valve 5 is provided.

7は吸気弁、8は排気弁である。7 is an intake valve, and 8 is an exhaust valve.

上記エアクリーナ4上流の吸気通路2において、第2図
および第3図に拡大詳示するように、吸気通路2の円筒
状通路壁2aの内面には各々通路壁2aの円周方向に沿
って延びる一対の係合片9.9が対向して突設され、該
両係合片9,9と通路壁2aとの間には断面円弧状の基
部材10が係合され、該基部材10には上記両係合片9
,9間の間隙を通って突出するブラケット部10a。
In the intake passage 2 upstream of the air cleaner 4, as shown in enlarged detail in FIG. 2 and FIG. A pair of engaging pieces 9.9 are protruded to face each other, and a base member 10 having an arcuate cross section is engaged between the engaging pieces 9, 9 and the passage wall 2a. are both the above-mentioned engaging pieces 9
, 9 and protrudes through the gap between the bracket portions 10a.

10aを介して、吸気通路2の中心に位置する回転軸1
1が回転自在に軸支されている。
The rotating shaft 1 located at the center of the intake passage 2 via 10a
1 is rotatably supported.

上記回転軸11には渦巻状のバイメタル12の内端部が
固定され、該バイメタル12の外端部は上記基部材10
に固定され、吸気温度に応じて伸縮作動するバイメタル
12により回転軸11を回転させるように設けられてい
る。
An inner end of a spiral bimetal 12 is fixed to the rotating shaft 11, and an outer end of the bimetal 12 is connected to the base member 10.
The rotary shaft 11 is rotated by a bimetal 12 which is fixed to a bimetal 12 and expands and contracts depending on the intake air temperature.

また、上記エアクリーナ4上流の吸気通路2の周りには
、各々略同じ通路断面積を有する第1外気導入通路13
、第2外気導入通路14および暖気導入通路15が吸気
通路2に沿って並んで形成されている。
Further, around the intake passage 2 upstream of the air cleaner 4, there are first outside air introduction passages 13 each having approximately the same passage cross-sectional area.
, a second outside air introduction passage 14 and a warm air introduction passage 15 are formed side by side along the intake passage 2.

上記第1外気導入通路13の上流端は吸気通路2の上流
に向う方向(エアクリーナ4から離れる方向)に延びた
位置において外気に開放されているとともに、下流端は
上記第2外気導入通路14の上流端に接続され、第2外
気導入通路14の下流端は上記バイメタル12上流の吸
気通路2に接続されており、第1および第2外気導入通
路13◆ 14により外気を、第1外気導入通路13に
あっては吸気通路2の吸気流れに対して同方向の流れを
なすように、また第2外気導入通路14にあっては吸気
流れと反対方向の流れをなすようにそれぞれ流通せしめ
て吸気通路2に導入するように設けられている。
The upstream end of the first outside air introduction passage 13 is open to the outside air at a position extending upstream of the intake passage 2 (in the direction away from the air cleaner 4), and the downstream end of the second outside air introduction passage 14 is open to the outside air. The downstream end of the second outside air introduction passage 14 is connected to the intake passage 2 upstream of the bimetal 12, and the first and second outside air introduction passages 13◆ 14 supply outside air to the first outside air introduction passage. 13, the intake air flows in the same direction as the intake flow in the intake passage 2, and in the second outside air introduction passage 14, the intake air flows in the opposite direction to the intake flow. It is provided so as to be introduced into the passage 2.

一方、上記暖気導入通路15の上流端は吸気通路2の下
流端に向う方向(エアクリーナ4に近ずく方向)に延ひ
た位置に配置され、該上流端には上流端が上記排気通路
3の周辺に開口する連通路16の下流端が接続され、ま
た暖気導入通路15の下流端は、上記第2外気導入通路
14と同じくバイメタル12上流の吸気通路2に接続さ
れており、排気通路3の排気熱で加熱された暖気を吸気
通路2の吸気流れと反対方向の流れをなすように流通せ
しめて吸気通路2に導入するように設けられている。
On the other hand, the upstream end of the warm air introduction passage 15 is disposed at a position extending in the direction toward the downstream end of the intake passage 2 (the direction approaching the air cleaner 4), and the upstream end of the warm air introduction passage 15 is located at the upstream end of the exhaust passage 3. The downstream end of the communication passage 16 that opens to the periphery is connected, and the downstream end of the warm air introduction passage 15 is connected to the intake passage 2 upstream of the bimetal 12, like the second outside air introduction passage 14, and the exhaust passage 3 is connected to the downstream end of the communication passage 16 that opens to the surrounding area. It is provided so that warm air heated by exhaust heat is introduced into the intake passage 2 by flowing in a direction opposite to the intake air flow in the intake passage 2.

さらに、17な扇形状の板材からなる回転制御弁であっ
て、該回転制御弁17の扇形中心部は上記回転軸11に
固定され、また、回転制御弁17の扇形外半部は上記第
2外気導入通路14の通路断面(あるいは暖気導入通路
15の通路断面)と略同じ形状に形成されて、該第2外
気導入通路14と暖気導入通路15とを横切るように配
置され、さらに回転制御弁17は両端部に、吸気通路2
の通路壁2aに形成した案内溝2b内に嵌挿案内される
円弧状の案内片17a、17aを有しており、回転制御
弁17により両溝入通路14,15の通路断面積を互い
に相反する方向に開閉制御するように設けられている。
Furthermore, the rotary control valve is made of a 17 fan-shaped plate material, the fan-shaped center part of the rotary control valve 17 is fixed to the rotary shaft 11, and the fan-shaped outer half of the rotary control valve 17 is fixed to the second fan-shaped plate material. It is formed in substantially the same shape as the passage cross section of the outside air introduction passage 14 (or the passage cross section of the warm air introduction passage 15), is arranged to cross the second outside air introduction passage 14 and the warm air introduction passage 15, and further includes a rotation control valve. 17 is an intake passage 2 at both ends.
It has arc-shaped guide pieces 17a, 17a that are inserted into and guided into the guide groove 2b formed in the passage wall 2a, and the passage cross-sectional areas of both the grooved passages 14, 15 are set opposite to each other by the rotation control valve 17. It is provided so that it can be opened and closed in the direction in which it is opened and closed.

よって、上記バイメタル12の作動により回転制御弁1
7を回転させて、両外気導入通路13.14からの外気
および暖気導入通路15からの暖気の導入割合を制御す
るように構成されている。
Therefore, due to the operation of the bimetal 12, the rotation control valve 1
7 to control the introduction ratio of outside air from both outside air introduction passages 13 and 14 and warm air from the warm air introduction passage 15.

したがって、上記実施例においては、エンジン1に供給
する吸気の温度が低い場合には、それを吸気通路2のバ
イメタル12が検知して収縮し、このバイメタル12の
収縮により回転制御弁17が第2外気導入通路14の通
路断面積を減少させる方向にかつ暖気導入通路15の通
路断面積を増大させる方向に回転して、排気通路3の排
気熱で加熱された暖気の導入量が外気導入量より増加し
、これにより吸気通路2の吸気温度が上昇して最適温度
に補正される。
Therefore, in the above embodiment, when the temperature of the intake air supplied to the engine 1 is low, the bimetal 12 of the intake passage 2 detects it and contracts, and the contraction of the bimetal 12 causes the rotation control valve 17 to move to the second position. The rotation is made in the direction of decreasing the passage cross-sectional area of the outside air introduction passage 14 and the direction of increasing the passage cross-sectional area of the warm air introduction passage 15, so that the amount of warm air heated by the exhaust heat of the exhaust passage 3 is greater than the amount of outside air introduced. As a result, the intake air temperature in the intake passage 2 increases and is corrected to the optimum temperature.

一方、吸気温度が高い場合には、逆に、バイメタル12
が伸張し、このバイメタル12の伸張により回転制御弁
17が第2外気導入通路14の通路断面積を増大させる
方向にかつ暖気導入通路15の通路断面積を減少させる
方向に回転して、比較的低温の外気の導入量が暖気導入
量よりも増加し、これにより吸気温度が下降して最適温
度に補正される。
On the other hand, when the intake air temperature is high, the bimetal 12
The expansion of the bimetal 12 causes the rotation control valve 17 to rotate in the direction of increasing the passage cross-sectional area of the second outside air introduction passage 14 and in the direction of decreasing the passage cross-sectional area of the warm air introduction passage 15. The amount of low-temperature outside air introduced is greater than the amount of warm air introduced, thereby lowering the intake air temperature and correcting it to the optimum temperature.

よって、常に最適温度に一定に保たれた吸気をエンジン
1に供給することができる。
Therefore, it is possible to supply the engine 1 with intake air that is always kept at a constant optimum temperature.

また、上記バイメタル12は暖気導入通路15および第
2外気導入通路14の接続部より下流の吸気通路2内に
配置されているため、該バイメタル12には外気と暖気
とが十分混合した後の吸気が接触するので、吸気温度を
正確に検知することができ、吸気温度の制御を精度よく
行うことができる。
Furthermore, since the bimetal 12 is disposed in the intake passage 2 downstream of the connection part between the warm air introduction passage 15 and the second outside air introduction passage 14, the bimetal 12 receives the intake air after the outside air and warm air have been sufficiently mixed. Since the two are in contact with each other, the intake air temperature can be detected accurately, and the intake air temperature can be controlled with high precision.

さらに、該バイメタル12によって応動する回転制御弁
17がバイメタル12と共に回転軸11に固定され、該
回転軸11を介して連結されているので、吸気温度の正
確な制御を従来の如きリンク機構を用いずに行うことが
でき、作動機構の簡略化を図ることができる。
Furthermore, since the rotation control valve 17 that responds to the bimetal 12 is fixed to the rotating shaft 11 together with the bimetal 12 and connected via the rotating shaft 11, the intake air temperature can be accurately controlled using a conventional link mechanism. The actuation mechanism can be simplified.

尚、上記実施例では、外気導入通路を第1および第2外
気導入通路13.14で構成して、該第1外気導入通路
13を、吸気通路2の吸気流れと同方向の流れをなすよ
うに第2外気導入通路14に並設したが、第1外気導入
通路を省略して、第2外気導入通路のみにより外気を導
入してもよいが、吸気騒音の低減化を図りつつ外気導入
通路のコンパクト化を図る上では上記実施例の如き構造
が好ましい。
In the above embodiment, the outside air introduction passage is configured with the first and second outside air introduction passages 13 and 14, and the first outside air introduction passage 13 is configured to flow in the same direction as the intake air flow in the intake passage 2. However, the first outside air introduction passage may be omitted and outside air may be introduced only through the second outside air introduction passage. The structure of the above embodiment is preferable in order to make it more compact.

以上説明したように、本考案によれば、エアクリーナ上
流の吸気通路内に設けた回転軸に吸気温度に応じて作動
するバイメタルを装着するとともに、上気吸気通路の吸
気流れと反対方向の流れをなす外気導入通路および暖気
導入通路を吸気通路に沿って設け、上記バイメタル上流
の吸気通路に上記両溝入通路の下流端を接続し、さらに
上記両溝入通路の通路断面積を制御する回転制御弁を上
記回転軸に装着し、上記バイメタルの作動により回転制
御弁を回転させて上記両溝入通路からの外気および暖気
の導入割合を制御するようにしたことにより、簡単な構
造でもってかつ精度よく、エンジンに供給する吸気の温
度を一定に保つことができる吸気装置を提供することが
できるものである。
As explained above, according to the present invention, a bimetal that operates according to the intake air temperature is attached to the rotating shaft provided in the intake passage upstream of the air cleaner, and the intake air flow in the opposite direction to the intake air flow in the upper air intake passage is installed. an outside air introduction passage and a warm air introduction passage are provided along the intake passage, the downstream ends of the double grooved passages are connected to the intake passage upstream of the bimetal, and rotation control is further performed to control the passage cross-sectional area of the double grooved passages. A valve is attached to the rotating shaft, and the rotation control valve is rotated by the operation of the bimetal to control the ratio of outside air and warm air introduced from the double grooved passage, which has a simple structure and high accuracy. Therefore, it is possible to provide an intake device that can maintain a constant temperature of intake air supplied to an engine.

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

図面は本考案の実施態様を例示するもので、第1図は全
体概略構成図、第2図は一部を除去した要部の分解斜視
図、第3図は同正面図である。 1・・・・・・エンジン、2・・・・・・吸気通路、4
・・・・・・エアクリーナ、11・・・・・・回転軸、
12・・・・・・バイメタル、14・・・・・・第2外
気導入通路、15・・・・・・暖気導入通路、17・・
・・・・回転制御弁。
The drawings illustrate an embodiment of the present invention; FIG. 1 is an overall schematic diagram, FIG. 2 is an exploded perspective view of the main parts with some parts removed, and FIG. 3 is a front view of the same. 1...Engine, 2...Intake passage, 4
... Air cleaner, 11 ... Rotating shaft,
12... Bimetal, 14... Second outside air introduction passage, 15... Warm air introduction passage, 17...
...Rotation control valve.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] エアクリーナ上流の吸気通路内に設けた回転軸に吸気温
度に応じて作動するバイメタルを装着するとともに、上
記吸気通路の吸気流れと反対方向の流れをなす外気導入
通路および暖気導入通路を吸気通路に沿って設け、上記
バイメタル上流の吸気通路に上記両溝入通路の下流端を
接続し、さらに上記両溝入通路の通路断面積を制御する
回転制御弁を上記回転軸に装着し、上記バイメタルの作
動により回転制御弁を回転させて上記両溝入通路からの
外気および暖気の導入割合を制御するようにしたことを
特徴とするエンジンの吸気装置。
A bimetal that operates according to the intake air temperature is attached to the rotating shaft provided in the intake passage upstream of the air cleaner, and an outside air introduction passage and a warm air introduction passage, which flow in the opposite direction to the intake air flow in the intake passage, are installed along the intake passage. The downstream ends of the double grooved passages are connected to the intake passage upstream of the bimetal, and a rotation control valve for controlling the passage cross-sectional area of the double grooved passages is attached to the rotating shaft, and the operation of the bimetal is controlled. An intake system for an engine, characterized in that a rotation control valve is rotated to control the introduction ratio of outside air and warm air from the two grooved passages.
JP17906180U 1980-12-13 1980-12-13 engine intake system Expired JPS601254Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17906180U JPS601254Y2 (en) 1980-12-13 1980-12-13 engine intake system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17906180U JPS601254Y2 (en) 1980-12-13 1980-12-13 engine intake system

Publications (2)

Publication Number Publication Date
JPS57101364U JPS57101364U (en) 1982-06-22
JPS601254Y2 true JPS601254Y2 (en) 1985-01-14

Family

ID=29974408

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17906180U Expired JPS601254Y2 (en) 1980-12-13 1980-12-13 engine intake system

Country Status (1)

Country Link
JP (1) JPS601254Y2 (en)

Also Published As

Publication number Publication date
JPS57101364U (en) 1982-06-22

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