JPH0636287Y2 - Drainage structure of outside air intake pipe - Google Patents
Drainage structure of outside air intake pipeInfo
- Publication number
- JPH0636287Y2 JPH0636287Y2 JP15627988U JP15627988U JPH0636287Y2 JP H0636287 Y2 JPH0636287 Y2 JP H0636287Y2 JP 15627988 U JP15627988 U JP 15627988U JP 15627988 U JP15627988 U JP 15627988U JP H0636287 Y2 JPH0636287 Y2 JP H0636287Y2
- Authority
- JP
- Japan
- Prior art keywords
- partition plate
- housing
- intake pipe
- outside air
- downward
- 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 - Fee Related
Links
Landscapes
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Description
【考案の詳細な説明】 ［産業上の利用分野］ この考案は車両のエアクリーナへの外気導入吸気管にお
ける水抜き構造の改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an improvement of a drainage structure in an intake pipe for introducing outside air into an air cleaner of a vehicle.
［従来技術］ 従来、キャブオーバ型自動車のエアクリーナへの外気導
入装置としては、車体外側面に吸気用のスリットが設け
られており、エンジンに装備されたエアクリーナから延
びる吸気管の先端がスリットの裏面に位置して、そのス
リットから流れ込んだ大気をエアクリーナに吸入する方
式がとられている。そして、第３図に示すように前記吸
気管１の途中には拡張部２を下方に向けて形成し、この
拡張部２のハウジング21の上面ほぼ中央から垂下してこ
のハウジング21内を前後に分離する下向き仕切板22によ
って大気中の空気と雨水を分離するとともに、ハウジン
グ21の底面に設けた排水装置３により拡張部２のハウジ
ング21内に溜った水は水頭圧Ｈによって外部に排出する
ようになっている。[Prior Art] Conventionally, as a device for introducing outside air into an air cleaner of a cab-over type automobile, a slit for intake is provided on an outer surface of a vehicle body, and a tip of an intake pipe extending from an air cleaner mounted on an engine is provided on a rear surface of the slit. The air cleaner flowing from the slit is sucked into the air cleaner. As shown in FIG. 3, an extension portion 2 is formed in the middle of the intake pipe 1 so as to face downward, and the extension portion 2 hangs down from substantially the center of the upper surface of the housing 21 to move back and forth inside the housing 21. The separating partition plate 22 separates the atmospheric air from the rainwater, and the drainage device 3 provided on the bottom surface of the housing 21 discharges the water accumulated in the housing 21 of the expansion portion 2 to the outside by the head pressure H. It has become.
したがって、前記拡張部２のハウジング21内に溜水が増
加して下向き仕切板22の下端末と溜水上面との間隙が縮
まり、空気流路が狭められると、第２図に示すようにエ
ジンの吸気負圧により溜水面が波立ち、飛沫状になった
水分が上方に空気とともに吸い上げられてしまい、吸い
上げられた水分は吸気燃料とともにエンジンの燃焼室へ
入り込んで圧縮圧力を急上昇させてエンジン不調の原因
となる。いわゆるリキッドコンプレッションという不具
合を発生する。Therefore, when the accumulated water is increased in the housing 21 of the expansion part 2 and the gap between the lower end of the downward partition plate 22 and the upper surface of the accumulated water is narrowed and the air flow path is narrowed, the engine is closed as shown in FIG. Due to the negative pressure of intake air, the water surface swells, and the water droplets are sucked up together with the air, and the sucked water enters the combustion chamber of the engine together with the intake fuel, causing a rapid increase in compression pressure and an engine malfunction. Cause. A so-called liquid compression problem occurs.
［考案が解決しようとする問題点］ この考案は前記問題に鑑み、吸気管の途中に下方に向け
て形成した拡張部内に、この拡張部のハウジングを前後
に２分割する下向き仕切板と、水平に延在する横向き仕
切板とを設けて、エアクリーナへ水が侵入するのを防止
するようにした外気導入吸気管の水抜き構造を提供する
ことを課題とする。[Problems to be Solved by the Invention] In view of the above problems, the present invention has a downward partition plate that divides the housing of the expansion part into two parts in the expansion part formed downward in the middle of the intake pipe, and a horizontal partition plate. It is an object of the present invention to provide a drainage structure of an outside air intake pipe, which is provided with a lateral partition plate extending to the inside of the air cleaner to prevent water from entering the air cleaner.
［問題を解決しようとするための手段］ この考案の外気導入吸気管の水抜き構造は、車両のエア
クリーナへの外気導入吸気管の途中に下方に向けて形成
した拡張部により、外気に含まれる水を分離するように
した水抜き構造において、前記拡張部のハウジング内
に、このハウジングの上面ほぼ中央から垂下してこのハ
ウジングを前後に２分割する下向き仕切板と、ハウジン
グの後面からほぼ水平に延在する横向き仕切板とを設
け、前記横向き仕切板は、その先端が前記下向き仕切板
の下端延長線まで延在して、この先端縁と前記下向き仕
切板の下端縁とで横向きの開口面を形成したものであ
る。[Means for Solving the Problem] The drainage structure of the outside air introducing intake pipe of the present invention includes the outside air in the middle of the outside air introducing intake pipe to the air cleaner of the vehicle by the expansion portion formed downward. In a drainage structure that separates water, a downward partition plate that hangs down from approximately the center of the upper surface of the housing and divides the housing into two parts in the housing of the expansion part, and a horizontal partition from the rear surface of the housing. An extending lateral partition plate is provided, and the lateral partition plate has its tip extending to the extension line of the lower end of the downward partition plate, and the lateral opening surface at this tip edge and the lower edge of the downward partition plate. Is formed.
［実施例］ 第１図に示す実施例において、車両のエアクリーナの外
気導入吸気管１（以下、吸気管１という）の途中に下方
に向けて形成した拡張部２のハウジング21内に、このハ
ウジング21の上面ほぼ中央から垂下してこのハウジング
21内を前後に２分割する下向き仕切板22と、ハウジング
21の後面からほぼ水平に延在する横向き仕切板23とを設
け、前記横向き仕切板23は、その先端が前記下向き仕切
板22の下端延長線まで延在して、この先端縁と前記下向
き仕切板22の下端縁とで横向きの開口面４を形成してい
る。３は前記ハウジング21の底面部に設けた排水口32に
ワンウェイ式排水弁31を取付けてなる排水装置である。[Embodiment] In the embodiment shown in FIG. 1, this housing is provided in a housing 21 of an extension portion 2 formed downward in the middle of an outside air introduction intake pipe 1 (hereinafter referred to as intake pipe 1) of an air cleaner of a vehicle. This housing hangs from the center of the upper surface of 21
A downward partition plate 22 that divides the inside of the housing 21 into two parts, front and rear, and a housing
21 is provided with a horizontal partition plate 23 extending substantially horizontally from the rear surface of the horizontal partition plate 23, the end of the horizontal partition plate 23 extends to the extension line of the lower end of the downward partition plate 22, and the leading edge and the downward partition. A lateral opening surface 4 is formed with the lower edge of the plate 22. Reference numeral 3 denotes a drainage device in which a one-way drain valve 31 is attached to a drain port 32 provided on the bottom surface of the housing 21.
前記のように構成した吸気管１の途中に下方に向けて形
成した拡張部２において車両走行中のエンジン回転時に
吸気管１の入口側から拡張部２のハウジング21内に吸引
された雨水を含んだ外気は下向き仕切板22によってハウ
ジング21内の前側を下方に導かれる。比重の軽い空気は
前記下向き仕切板22の下端縁部において横向き仕切板23
の先端とで形成された開口面４に向けて90°進行方向を
変えて横方向に吸引され、横向き仕切板23のスロープに
導かれ横向きからハウジング21の後面24に沿ってさらに
上方に向きを変え、吸気管１の出口側に吸引されてエア
クリーナへ導入される。一方、比重の重い雨水は慣性力
によって拡張部２のハウジング21の下方に落下する。In the expansion portion 2 formed downward in the middle of the intake pipe 1 configured as described above, rainwater that is sucked into the housing 21 of the expansion portion 2 from the inlet side of the intake pipe 1 during engine rotation while the vehicle is running is included. The outside air is guided downward by the downward partition plate 22 inside the housing 21. Air having a low specific gravity is passed through the horizontal partition plate 23 at the lower end edge of the downward partition plate 22.
Is changed by 90 ° toward the opening surface 4 formed by the front end of the housing and is sucked in the lateral direction, guided by the slope of the lateral partition plate 23, and directed further upward along the rear surface 24 of the housing 21 from the lateral direction. Instead, it is sucked into the outlet side of the intake pipe 1 and introduced into the air cleaner. On the other hand, the rainwater having a high specific gravity falls below the housing 21 of the expansion portion 2 due to the inertial force.
前述の分離された落下水はハウジング21内に溜められ、
一定の水頭圧に到達するとハウジング21の底面に設けら
れた排水装置３の排水弁31が開放し、排水孔32より拡張
部２のハウジング21より外部に排出される。ところで、
車両走行時間が長時間となる場合および降水量が著しく
多量である等によって、ハウジング21内の溜水量が増加
しその水位が上昇して前記横向き仕切板23に接近して
も、この横向き仕切板23によって吸引負圧の向きが横向
きとなるため、吸引負圧による溜水表面の波立ちの発生
を抑制し、溜水の一部が吸気管１の出口側に吸引される
のを防止する。The separated falling water is stored in the housing 21,
When a constant water head pressure is reached, the drain valve 31 of the drainage device 3 provided on the bottom surface of the housing 21 opens, and the drainage hole 32 discharges the water from the housing 21 of the extension 2 to the outside. by the way,
Even if the amount of accumulated water in the housing 21 increases and the water level rises and approaches the horizontal partition plate 23 due to a long running time of the vehicle or a large amount of precipitation, the horizontal partition plate Since the suction negative pressure is directed sideways by 23, the generation of ripples on the surface of the accumulated water due to the suction negative pressure is suppressed, and a part of the accumulated water is prevented from being sucked to the outlet side of the intake pipe 1.
［考案の効果］ この考案の外気導入吸気管の水抜き構造は、車両のエア
クリーナへの外気導入吸気管の途中に下方に向けて形成
した拡張部により、外気に含まれる水を分離するように
した水抜き構造において、前記拡張部のハウジング内
に、このハウジングの上面ほぼ中央から垂下してこのハ
ウジングを前後に２分割する下向き仕切板と、ハウジン
グの後面からほぼ水平に延在する横向き仕切板とを設
け、前記横向き仕切板は、その先端が前記下向き仕切板
の下端延長線まで延在して、この先端縁と前記下向き仕
切板の下端縁とで横向きの開口面を形成したので、負圧
によって発生する溜水面の波立ちを阻止するとともに、
空気と共に吸引した水分を効果的に分離して空気のみが
燃料とともにエンジンの燃焼室へ供給され、リキッドコ
ンプレッションを効果的に防止することができる。[Advantages of the Invention] The water removal structure of the outside air introduction intake pipe of the present invention separates water contained in the outside air by the downwardly formed expansion part in the outside air introduction intake pipe to the air cleaner of the vehicle. In the water draining structure, a downward partition plate that hangs down from the substantially upper center of the housing to divide the housing into two parts in the front and rear, and a horizontal partition plate that extends substantially horizontally from the rear surface of the housing. And the lateral partition plate, the tip of which extends to the lower end extension line of the downward partition plate, since the front end edge and the lower end edge of the downward partition plate to form a lateral opening surface, Prevents ripples on the surface of the pool caused by pressure,
Moisture sucked together with air is effectively separated and only air is supplied together with the fuel to the combustion chamber of the engine, so that liquid compression can be effectively prevented.
第１図はこの考案の実施例の拡張部の縦断面図、第２図
および第３図は従来例の拡張部の縦断面図で、第２図は
エンジン回転時の状態説明図、第３図はエンジン停止時
の状態説明図である。 １…外気導入吸気管,2…拡張部,21…ハウジング,22…下
向き仕切板,23…横向き仕切板,3…排水装置,4…開口面FIG. 1 is a vertical cross-sectional view of an expansion part of an embodiment of the present invention, FIGS. 2 and 3 are vertical cross-sectional views of a conventional expansion part, and FIG. 2 is a state explanatory view when an engine is rotating, and FIG. The figure is an explanatory view of the state when the engine is stopped. 1 ... Outside air introduction intake pipe, 2 ... Expansion part, 21 ... Housing, 22 ... Downward partition plate, 23 ... Sideways partition plate, 3 ... Drainage device, 4 ... Opening surface
Claims (1)
途中に下方に向けて形成した拡張部により、外気に含ま
れる水を分離するようにした水抜き構造において、前記
拡張部のハウジング内に、このハウジングの上面ほぼ中
央から垂下してこのハウジングを前後に２分割する下向
き仕切板と、ハウジングの後面からほぼ水平に延在する
横向き仕切板とを設け、前記横向き仕切板は、その先端
が前記下向き仕切板の下端延長線まで延在して、この先
端縁と前記下向き仕切板の下端縁とで横向きの開口面を
形成したことを特徴とする外気導入吸気管の水抜き構
造。1. A drainage structure in which water contained in the outside air is separated by an expansion portion formed downward in the middle of an intake pipe for introducing the outside air into an air cleaner of a vehicle. A downward partition plate that hangs down from substantially the center of the upper surface of the housing and divides the housing into two parts in the front and rear direction; and a horizontal partition plate that extends substantially horizontally from the rear surface of the housing. A drainage structure for an outside air intake pipe, which extends to a lower end extension line of the downward partition plate, and a lateral opening surface is formed by the leading edge and the lower end edge of the downward partition plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15627988U JPH0636287Y2 (en) | 1988-11-30 | 1988-11-30 | Drainage structure of outside air intake pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15627988U JPH0636287Y2 (en) | 1988-11-30 | 1988-11-30 | Drainage structure of outside air intake pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0276166U JPH0276166U (en) | 1990-06-11 |
| JPH0636287Y2 true JPH0636287Y2 (en) | 1994-09-21 |
Family
ID=31434680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15627988U Expired - Fee Related JPH0636287Y2 (en) | 1988-11-30 | 1988-11-30 | Drainage structure of outside air intake pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0636287Y2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5959156B2 (en) * | 2011-04-11 | 2016-08-02 | 株式会社セキソー | Manufacturing method of duct connecting part |
| JP6136918B2 (en) * | 2013-12-26 | 2017-05-31 | マツダ株式会社 | Engine intake system |
| JP6277901B2 (en) * | 2014-07-24 | 2018-02-14 | スズキ株式会社 | Intake device for vehicle engine |
| JP6500646B2 (en) * | 2015-07-02 | 2019-04-17 | スズキ株式会社 | Engine intake system |
-
1988
- 1988-11-30 JP JP15627988U patent/JPH0636287Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0276166U (en) | 1990-06-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |