JPH0639946B2 - Air intake system for small vehicles - Google Patents
Air intake system for small vehiclesInfo
- Publication number
- JPH0639946B2 JPH0639946B2 JP59175196A JP17519684A JPH0639946B2 JP H0639946 B2 JPH0639946 B2 JP H0639946B2 JP 59175196 A JP59175196 A JP 59175196A JP 17519684 A JP17519684 A JP 17519684A JP H0639946 B2 JPH0639946 B2 JP H0639946B2
- Authority
- JP
- Japan
- Prior art keywords
- intake
- cleaner
- waterproof cover
- water
- 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.)
- Expired - Lifetime
Links
Classifications
-
- 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
- F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles
- F02M35/162—Motorcycles; All-terrain vehicles, e.g. quads, snowmobiles; Small vehicles, e.g. forklifts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
-
- 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
- F02M35/02—Air cleaners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
- F05C2225/08—Thermoplastics
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Automatic Cycles, And Cycles In General (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Description
【発明の詳細な説明】 〔発明の技術分野〕 この発明は、鞍乗型車両等の小型車両の吸気装置に係
り、特にエンジンのエアクリーナへの水の吸込みを防止
するようにした小型車両の吸気装置に関する。Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to an intake device for a small vehicle such as a straddle-type vehicle, and particularly to an intake device for a small vehicle designed to prevent intake of water into an air cleaner of an engine. Regarding the device.
鞍乗型車両などでは、湿地や水たまり、河川等の悪条件
下を走行する関係上、第１図に概略を示すようにエンジ
ン１の吸気系統中に設けられるエアクリーナ２のインテ
ーク部３がエンジン１より上方部に配置され、このイン
テーク部３に水が入りにくいようになされている。クリ
ーナインテーク部３をエンジン１の上方に配置しても水
の多い地帯を走行すると、クリーナインテーク部３まで
水が跳ね飛んでインテーク部３の先端に開口する吸気口
４から水を吸込んでしまうことが避けられなかった。In a saddle-ride type vehicle or the like, the intake section 3 of the air cleaner 2 provided in the intake system of the engine 1 is provided in the intake system of the engine 1 as shown in FIG. It is arranged in the upper part so that it is difficult for water to enter the intake part 3. Even if the cleaner intake section 3 is arranged above the engine 1, if the vehicle travels in a water-rich area, the water will splash to the cleaner intake section 3 and suck water from the intake port 4 opened at the tip of the intake section 3. Was unavoidable.
この発明は上記従来技術の問題点に着目し、これを改善
することを目的とするもので、水の多い地帯や雨中を走
行しても、エアクリーナに水を吸込むことがないように
した小型車両の吸気装置を提供するものである。The present invention focuses on and solves the above-mentioned problems of the prior art, and is a small vehicle in which the air cleaner is prevented from sucking water even when traveling in a water-rich area or in the rain. The air intake device is provided.
上記目的を達成するため、この発明に係る小型車両の吸
気装置においては、エンジン後方にエアクリーナを設け
た小型車両において、上記エアクリーナのクリーナイン
テーク部をエンジンの上方を通して前方に延設し、その
インテークヘッド部下面を途中から先端に向って持ち上
げて形成し、持ち上げられた下面に下側に開口する吸気
口を形成するとともに、前記クリーナインテーク部のイ
ンテークヘッド部を、後方が開口するスリッパ状の防水
カバーで前方から取り囲み、この防水カバーの袋部内に
インテークヘッド部下面により内部空間を形成し、この
内部空間に防水カバーの後方開口部をカバー内両側通路
を連通させたものである。In order to achieve the above object, in the intake system for a small-sized vehicle according to the present invention, in a small-sized vehicle provided with an air cleaner at the rear of the engine, the cleaner intake portion of the air cleaner extends forward above the engine, and the intake head thereof is provided. The lower surface of the unit is formed by lifting it from the middle toward the tip, and an intake port that opens downward is formed in the lifted lower surface, and the intake head of the cleaner intake section has a slipper-like waterproof cover that opens rearward. The interior space is defined by the lower surface of the intake head portion in the bag portion of the waterproof cover, and the rear opening portion of the waterproof cover is connected to both inner side passages of the cover in the interior space.
以下この発明の実施例を第２図乃至第５図により、第１
図と共通する部材には同一符号を用いて説明する。An embodiment of the present invention will be described below with reference to FIGS.
The same members as those in the figure will be described using the same reference numerals.
第２図、第３図に示す実施例では、エンジン１の吸気系
統中に設けられるエアクリーナ２のクリーナインテーク
部３の先端に、吸水防止部材としてのカバー５を取付け
るようにした場合であって、この防水カバーは、天然、
合成ゴム、塩化ビニール等の軟質合成樹脂によりスリッ
パ状に形成されて後方が開口している。防水カバー５
は、クリーナインテーク部３の先端の吸気口４を取り囲
むように前方から挿入される一方、上記防水カバー５は
クリーナインテーク部３の先端に嵌着されるヘッドカバ
ー状の袋部５ａを有し、この袋部５ａの下辺５ｂは後方
に延長されていてその延長部５ｃがクリーナインテーク
部３の下面にそっておかれるようになっている。In the embodiment shown in FIGS. 2 and 3, the cover 5 as a water absorption preventing member is attached to the tip of the cleaner intake portion 3 of the air cleaner 2 provided in the intake system of the engine 1. This waterproof cover is natural,
It is made of soft synthetic resin such as synthetic rubber or vinyl chloride in the shape of a slipper and has an opening at the rear. Waterproof cover 5
Is inserted from the front so as to surround the intake port 4 at the tip of the cleaner intake section 3, while the waterproof cover 5 has a head cover-shaped bag portion 5a fitted to the tip of the cleaner intake section 3. The lower side 5b of the bag portion 5a is extended rearward so that the extended portion 5c extends along the lower surface of the cleaner intake portion 3.
したがって、下方から跳ね上る水は、防水カバー５の下
辺５ｂおよびその延長部５ｃによりさえ切られてインテ
ーク部３へふり掛ることが防がれ、また前方からふり掛
る水は防水カバー５の袋部５ａの外面によりさえ切られ
てクリーナインクーテ部３の吸気口４に水が入ることが
防止される。防水カバー５の外面に付着した水は、車両
の走行によって後方へふり切られ、インテーク部３の吸
気口４に水が達することがない。また、クリーナインテ
ーク部３はインテークヘッド部３ａの下面が第２図に示
すように途中から先端に向って段状に持ち上げられて形
成され、持ち上げられた下面３ｂのほぼ中央に下側に開
口する吸気口４が形成される。そして、クリーナインク
ーテ部３のインテークヘッド部３ａの下面３ｂにより、
防水バー５の袋部５ａ内に内部空間７が形成され、この
内部空間７にカバー５の後方開口部が第３図に示すよう
にカバー内両側通路８，８を経て連通している。内部空
間７は防水カバー５とインテークヘッド部３ａの下面３
ｂとの間の間隙により形成される。Therefore, the water splashing from below is prevented from being cut off even by the lower side 5b of the waterproof cover 5 and its extension 5c and splashing on the intake portion 3, and the water splashing from the front is prevented from splashing on the bag portion of the waterproof cover 5. Even the outer surface of 5a is cut to prevent water from entering the intake port 4 of the cleaner ink cover 3. Water adhering to the outer surface of the waterproof cover 5 is cut off backward by the traveling of the vehicle, and the water does not reach the intake port 4 of the intake section 3. Further, the cleaner intake portion 3 is formed by raising the lower surface of the intake head portion 3a stepwise from the middle toward the tip as shown in FIG. 2, and opens downward at approximately the center of the raised lower surface 3b. The intake port 4 is formed. Then, by the lower surface 3b of the intake head portion 3a of the cleaner ink portion 3,
An inner space 7 is formed in the bag portion 5a of the waterproof bar 5, and a rear opening portion of the cover 5 communicates with the inner space 7 through both inner passages 8 in the cover as shown in FIG. The internal space 7 includes the waterproof cover 5 and the lower surface 3 of the intake head portion 3a.
It is formed by the gap with b.
このため、防水カバー５の後方開口部から吸込まれる空
気は、スリッパ状防水カバー５の両側通路８，８を通っ
て内部空間７に案内され、この内部空間７を囲い込むよ
うにしてインテークヘッド部３ａの下面３ｂ中央に形成
される吸気口４に導かれ、この吸気口４を下側から上昇
するようにクリーナインテーク部３内に案内される。防
水カバー５の後方開口部から吸い込まれる空気は、一旦
内部空間７に案内されて反転したり、流れの向きが変え
られた後、中央の吸気口４に巻き込まれるように案内さ
れて吸気口４内を上昇してクリーナインテーク部３内に
導かれるから、その間に遠心力作用や圧力緩衝作用によ
る気液分離やミスト等の異物の除去が有効に行なわれ、
雨水等の水分が除去された空気がクリーナインテーク部
３を通ってエアクリーナ２に案内される。Therefore, the air sucked from the rear opening of the waterproof cover 5 is guided to the internal space 7 through the both side passages 8 of the slipper-shaped waterproof cover 5, and the intake head part 3 a is surrounded by the internal space 7. Is guided to the intake port 4 formed in the center of the lower surface 3b and guided inside the cleaner intake portion 3 so as to rise from the lower side. The air sucked from the rear opening of the waterproof cover 5 is once guided to the internal space 7 and inverted, or after the flow direction is changed, the air is guided so as to be caught in the central intake port 4 and then the intake port 4 is drawn. Since it rises inside and is guided to the inside of the cleaner intake section 3, during that time, gas-liquid separation by centrifugal force action or pressure buffer action and removal of foreign matter such as mist are effectively performed,
Air from which water such as rainwater has been removed is guided to the air cleaner 2 through the cleaner intake portion 3.
第４図、第５図は防水カバー５の袋部５ａの後方開口縁
部である後端縁に折返し部６を形成して、袋部５ａの上
面に当る水を跳ね返し、クリーナインテーク部３へ一層
水が入り込まないようにした変形例である。この折返し
部６は、図のように防水カバー５の構成材料を一旦前方
へ折り返したのち溶着等により接着することにより形成
される。4 and 5 show a folded portion 6 formed at a rear end edge of the bag portion 5a of the waterproof cover 5 which is a rear opening edge portion of the waterproof portion 5 so that water hitting the upper surface of the bag portion 5a is splashed back to the cleaner intake portion 3. This is a modified example in which water is prevented from further entering. The folded-back portion 6 is formed by folding the constituent material of the waterproof cover 5 forward as shown in the figure and then adhering it by welding or the like.
この実施例においても、防水カバー５の下辺５ｂおよび
延長部５ｃによりクリーナインテーク部３へふり掛る水
を遮断し、前方からの水は袋部５ａで遮断することがで
き、また防水カバー５の袋部５ａ上面に付着した水は折
返し部６により跳ね返されるのでクリーナインテーク部
３へ流れ込むことが確実に阻止される。Also in this embodiment, the lower side 5b of the waterproof cover 5 and the extension portion 5c can block the water splashing on the cleaner intake portion 3, and the water from the front can be blocked by the bag portion 5a. Water adhering to the upper surface of the portion 5a is repelled by the folding portion 6, so that it is reliably prevented from flowing into the cleaner intake portion 3.
以上に述べたようにこの発明に係る小型車両の吸気装置
においては、エアクリーナのクリーナインテーク部をエ
ンジンの上方を通して前方に延設する一方、クリーナイ
ンテーク部のインテークヘッド部下面を途中から先端に
向って持ち上げて形成し、持ち上げられた下面に下側に
開口する吸気口を形成するとともに、前記クリーナイン
テーク部のインテークヘッド部を、後方が開口するスリ
ッパ状の防水カバーで前方から取り囲み、この防水カバ
ーの袋部内にインテークヘッド部下面により内部空間を
形成し、この内部空間に防水カバーの後方開口部をカバ
ー内両側通路を経て連通させたので、遠心力作用や内部
空間による圧力緩衝作用により、気液分離効率を簡単な
構成で向上させて吸入空気中に含まれる雨水等の水分や
ミスト等の異物を除去でき、エアクリーナインテーク部
に水の吸込みが生ずるのを確実に防止でいる一方、走行
中にふり掛かる水がエンジンに吸入することが防がれ、
エンジントラブルの発生を未然に防止できる。As described above, in the intake system for a small-sized vehicle according to the present invention, the cleaner intake portion of the air cleaner extends forward through the upper portion of the engine, while the lower surface of the intake head portion of the cleaner intake portion extends from the middle toward the tip. Formed by lifting, forming an intake port that opens downward on the lifted lower surface, surround the intake head part of the cleaner intake part from the front with a slipper-shaped waterproof cover that opens at the rear, and An internal space is formed in the bag part by the lower surface of the intake head part, and the rear opening of the waterproof cover is communicated with this internal space through both passages in the cover. The separation efficiency is improved with a simple structure to remove water such as rainwater and foreign matter such as mist contained in the intake air. Removed by can, while you are in reliably prevented suction that occurs in the water to the air cleaner intake section, take pretend during running water is prevented to be sucked into the engine,
The occurrence of engine trouble can be prevented.
また、クリーナインテーク部はエアクリーナからエンジ
ン上方を通って前方に延設され、そのインテークヘッド
部に下側に開口する吸気口を形成したので、吸気口の形
成位置の自由度が高く、エンジンより上方に形成できる
ので、防水効果がより一層向上する。Further, the cleaner intake portion extends forward from the air cleaner through the upper part of the engine, and the intake head portion has an intake port that opens downward. Since it can be formed into a waterproof structure, the waterproof effect is further improved.
さらに、防水カバーをスリッパ形状に形成し、防水カバ
ーの後方開口縁部に折返し部を形成した場合には、防水
カバーの取付け、取外しが簡単でカバー取付けの自由度
が高いのみならず、低コストで得られ、また、折返し部
により防水カバーの後方開口部に水が侵入するのを確実
に防止でき、エアクリーナへの水の吸込みをより一層確
実に防止できる。Furthermore, when the waterproof cover is formed in a slipper shape and the folded portion is formed at the rear opening edge of the waterproof cover, the waterproof cover can be easily attached and detached, and the cover can be easily attached at low cost. In addition, it is possible to reliably prevent water from entering the rear opening of the waterproof cover by the folded portion, and it is possible to more reliably prevent water from being sucked into the air cleaner.
【図面の簡単な説明】 第１図はこの発明を適用する小型車両の一例を示す略示
側面図、第２図はこの発明に係る小型車両の吸気装置の
一実施例を示す側面図、第３図は防水カバー装着部の平
面図、第４図はこの発明に係る小型車両の吸気装置の他
の実施例を示す要部断面図、第５図は第４図の斜視図で
ある。 １……エンジン、２……エアクリーナ、３……クリーナ
インテーク部、４……吸気口、５……防水カバー、５ａ
……袋部、５ｃ……延長部。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic side view showing an example of a small vehicle to which the present invention is applied, and FIG. 2 is a side view showing an embodiment of an intake device for a small vehicle according to the present invention. FIG. 3 is a plan view of the waterproof cover mounting portion, FIG. 4 is a sectional view of a main portion showing another embodiment of the intake system for a small-sized vehicle according to the present invention, and FIG. 5 is a perspective view of FIG. 1 ... Engine, 2 ... Air cleaner, 3 ... Cleaner intake part, 4 ... Intake port, 5 ... Waterproof cover, 5a
…… Bag part, 5c …… extension part.
フロントページの続き (56)参考文献 実開 昭52−108419（ＪＰ，Ｕ) 実開 昭57−137531（ＪＰ，Ｕ) 実開 昭57−182521（ＪＰ，Ｕ) 実開 昭57−61162（ＪＰ，Ｕ) 実公 昭53−39768（ＪＰ，Ｙ２)Front page continuation (56) References Open 52-108419 (JP, U) Open 577-137531 (JP, U) Open 57-182521 (JP, U) Open 57-61162 (JP) , U) Sukeko Sho 53-39768 (JP, Y2)
Claims (2)
車両において、上記エアクリーナのクリーナインテーク
部をエンジンの上方を通して前方に延設し、そのインテ
ークヘッド部下面を途中から先端に向って持ち上げて形
成し、持ち上げられた下面に下側に開口する吸気口を形
成するとともに、前記クリーナインテーク部のインテー
クヘッド部を、後方が開口するスリッパ状の防水カバー
で前方から取り囲み、この防水カバーの袋部内にインテ
ークヘッド部下面により内部空間を形成し、この内部空
間に防水カバーの後方開口部をカバー内両側通路を経て
連通させたことを特徴とする小型車両の吸気装置。1. In a small-sized vehicle having an air cleaner behind the engine, a cleaner intake portion of the air cleaner extends forward through the upper part of the engine, and a lower surface of the intake head portion is lifted from the middle toward a tip, An intake port that opens downward is formed on the lifted lower surface, and the intake head part of the cleaner intake part is surrounded from the front by a slipper-like waterproof cover that opens at the rear, and the intake head is inside the bag part of this waterproof cover. An intake device for a small vehicle, characterized in that an inner space is formed by a lower surface of the part, and a rear opening portion of the waterproof cover is communicated with the inner space through both passages in the cover.
部を形成し、後方開口部への水の侵入を防止した特許請
求の範囲第１項に記載の小型車両の吸気装置。2. The air intake device for a small vehicle according to claim 1, wherein the waterproof cover has a folded portion at an opening edge portion of the rear opening to prevent water from entering the rear opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59175196A JPH0639946B2 (en) | 1984-08-24 | 1984-08-24 | Air intake system for small vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59175196A JPH0639946B2 (en) | 1984-08-24 | 1984-08-24 | Air intake system for small vehicles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6155359A JPS6155359A (en) | 1986-03-19 |
| JPH0639946B2 true JPH0639946B2 (en) | 1994-05-25 |
Family
ID=15991971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59175196A Expired - Lifetime JPH0639946B2 (en) | 1984-08-24 | 1984-08-24 | Air intake system for small vehicles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0639946B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2941521B2 (en) * | 1991-10-11 | 1999-08-25 | 本田技研工業株式会社 | Air cleaner for straddle-type vehicles |
| JP6129040B2 (en) * | 2013-09-27 | 2017-05-17 | ヤンマー株式会社 | engine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6010203Y2 (en) * | 1980-09-22 | 1985-04-08 | 本田技研工業株式会社 | Air cleaner intake device for two-wheeled or three-wheeled vehicles |
-
1984
- 1984-08-24 JP JP59175196A patent/JPH0639946B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6155359A (en) | 1986-03-19 |
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