JP7391477B2 - air cleaner - Google Patents

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JP7391477B2
JP7391477B2 JP2020053952A JP2020053952A JP7391477B2 JP 7391477 B2 JP7391477 B2 JP 7391477B2 JP 2020053952 A JP2020053952 A JP 2020053952A JP 2020053952 A JP2020053952 A JP 2020053952A JP 7391477 B2 JP7391477 B2 JP 7391477B2
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air
air inlet
filter
vertical wall
internal combustion
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JP2021156166A (en
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亮太 木村
壮介 山崎
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Daihatsu Motor Co Ltd
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Description

本発明は、車両等に搭載される内燃機関の吸気通路に接続されるエアクリーナに関する。 The present invention relates to an air cleaner connected to an intake passage of an internal combustion engine mounted on a vehicle or the like.

エアクリーナは、空気入口(インレット)から取り入れた空気を内蔵しているフィルタにより濾過して異物を取り除き、その上で空気出口(アウトレット)から内燃機関の吸気通路に流入させて供給するものである。 An air cleaner takes in air from an air inlet, filters it through a built-in filter to remove foreign matter, and then supplies the air by flowing it into the intake passage of an internal combustion engine from an air outlet.

車両のエンジンルーム(または、エンジンコンパートメント)に搭載される内燃機関用のエアクリーナでは、空気入口を車両の横方向に向けることが少なくない。これは、取り込む空気に雨水や溜水が入り込むことを防止する意図であるが、エンジンルーム内は内燃機関が放つ熱により昇温しており、空気入口を横に向けると内燃機関における吸気の充填効率が低下するという背反が生じる。 In air cleaners for internal combustion engines installed in the engine room (or engine compartment) of a vehicle, the air inlet is often oriented in the lateral direction of the vehicle. This is intended to prevent rainwater and standing water from entering the air being taken in, but the temperature inside the engine room is rising due to the heat emitted by the internal combustion engine, so turning the air inlet sideways will help fill the intake air in the internal combustion engine. The trade-off is that efficiency is reduced.

そのため、エアクリーナの空気入口を車両の前方に向けて開口させ、昇温していない走行風をエアクリーナに取り入れながら、雨水や溜水の侵入を抑制する工夫がなされている(例えば、下記特許文献を参照)。 Therefore, the air inlet of the air cleaner is opened toward the front of the vehicle, and while the running wind that has not risen in temperature is taken into the air cleaner, the intrusion of rainwater and accumulated water is suppressed (for example, the following patent document) reference).

特開2018-084200号公報JP2018-084200A

エアクリーナの容積を拡大すると、当該エアクリーナの外殻を構成するケースが膜振動を起こしやすくなり、NV(Noise and Vibration)性能の低下を招く。そこで、エアクリーナケースの内面に連接し内方に突出する壁(または、リブ)を成形して、ケースの剛性を補強することが考えられる。 When the volume of the air cleaner is increased, the case forming the outer shell of the air cleaner tends to cause membrane vibration, leading to a decrease in NV (Noise and Vibration) performance. Therefore, it is conceivable to form a wall (or rib) that is connected to the inner surface of the air cleaner case and protrudes inward to reinforce the rigidity of the case.

しかしながら、空気入口からケース内に流入する空気の流れがその壁に当たり、勢いよくフィルタを通過して空気出口に至る可能性が高くなる。それに伴い、雨水や溜水が空気出口から内燃機関の吸気通路のスロットルボディに侵入する懸念が生じる。 However, there is a high possibility that the air flowing into the case from the air inlet will hit the wall and forcefully pass through the filter to the air outlet. Accordingly, there is a concern that rainwater or accumulated water may enter the throttle body of the intake passage of the internal combustion engine from the air outlet.

以上の問題に着目してなされた本発明は、エアクリーナ内に入り込んだ雨水または溜水が内燃機関の吸気通路に至ることを抑止することを所期の目的としている。 The present invention, which has been developed in view of the above problems, aims to prevent rainwater or accumulated water that has entered the air cleaner from reaching the intake passage of an internal combustion engine.

本発明では、内燃機関の吸気通路に清浄な空気を供給するためのエアクリーナであって、空気を導入する空気入口と、前記空気入口よりも高い位置にあり内燃機関の吸気通路に向けて空気を流出させる空気出口と、前記空気入口と前記空気出口との間に介在し空気入口から空気出口に向かう空気を濾過するフィルタと、前記フィルタの下方にあって空気入口から導入した空気の流れが当たる縦壁と、前記フィルタの下方にありかつ前記縦壁の直上に設けられ縦壁に当たった空気の流れが直接フィルタに向かうことを遮る遮水壁とを具備し、前記遮水壁は、断面視において前記フィルタと略平行な平行部及び当該平行部と一体に設けられ前記空気入口に近づく方向に傾く傾斜部を有し、平行部と傾斜部との境界部位が前記縦壁よりも空気入口側に位置するエアクリーナを構成した。 The present invention provides an air cleaner for supplying clean air to an intake passage of an internal combustion engine, which includes an air inlet for introducing air, and an air inlet located at a higher position than the air inlet to direct air toward the intake passage of the internal combustion engine. an air outlet to be discharged, a filter interposed between the air inlet and the air outlet to filter the air heading from the air inlet to the air outlet, and a filter located below the filter and hit by the flow of air introduced from the air inlet. a vertical wall, and an impermeable wall that is provided below the filter and directly above the vertical wall and blocks the flow of air that has hit the vertical wall from going directly to the filter , and the impermeable wall has a cross section of It has a parallel part that is substantially parallel to the filter when seen, and an inclined part that is provided integrally with the parallel part and is inclined in a direction approaching the air inlet, and the boundary between the parallel part and the inclined part is closer to the air inlet than the vertical wall. An air cleaner located on the side was configured.

本発明によれば、エアクリーナ内に入り込んだ雨水または溜水が内燃機関の吸気通路に至ることを抑止できる。 According to the present invention, rainwater or accumulated water that has entered the air cleaner can be prevented from reaching the intake passage of the internal combustion engine.

本発明の一実施形態のエアクリーナの内部の構造を示す縦断面図。FIG. 1 is a vertical cross-sectional view showing the internal structure of an air cleaner according to an embodiment of the present invention.

本発明の一実施形態を、図面を参照して説明する。本実施形態のエアクリーナは、車両等に搭載される内燃機関の吸気通路に接続され、空気入口11から取り入れた空気をフィルタ3により濾過した後、空気出口12から内燃機関の吸気通路に流入させて供給するものである。 An embodiment of the present invention will be described with reference to the drawings. The air cleaner of this embodiment is connected to the intake passage of an internal combustion engine mounted on a vehicle or the like, and after filtering air taken in from an air inlet 11 with a filter 3, the air cleaner flows into the intake passage of the internal combustion engine from an air outlet 12. supply.

図1に、本実施形態のエアクリーナの内部の構造を示している。なお、図1の上方がエアクリーナの上方(天)、図1の下方がエアクリーナの下方(地)である。このエアクリーナは、空気入口11及び空気出口12を開設している例えば樹脂成形品のエアクリーナケース1と、ケース1内における空気入口11と空気出口12との間に介在するフィルタエレメント3と、ケース1内におけるフィルタ3の下方に所在する縦壁13と、ケース1内におけるフィルタ3の下方かつ縦壁13の直上に所在する遮水壁2とを具備する。 FIG. 1 shows the internal structure of the air cleaner of this embodiment. Note that the upper side of FIG. 1 is the upper side (top) of the air cleaner, and the lower side of FIG. 1 is the lower side (ground) of the air cleaner. This air cleaner includes an air cleaner case 1 made of, for example, a resin molded product, which has an air inlet 11 and an air outlet 12, a filter element 3 interposed between the air inlet 11 and the air outlet 12 in the case 1, and the case 1. The case 1 includes a vertical wall 13 located below the filter 3 within the case 1, and a water-blocking wall 2 located below the filter 3 and directly above the vertical wall 13 within the case 1.

エアクリーナケース1は、水平方向即ち前後方向及び左右方向に比して上下方向の寸法が長尺な、縦長の筐体状をなす。 The air cleaner case 1 is in the form of a vertically elongated housing, which is longer in the vertical direction than in the horizontal direction, that is, the front-rear direction and the left-right direction.

空気入口11は、ケース1の下端部に設けている。この空気入口11は、車両の前方から空気、特にフロントグリルを通じてエンジンルーム内に吹き込む走行風をケース1内に取り込むように、車両の前方側を指向して開口している。 The air inlet 11 is provided at the lower end of the case 1. The air inlet 11 opens toward the front of the vehicle so as to take in air from the front of the vehicle, particularly the wind blowing into the engine room through the front grille, into the case 1.

空気出口12は、ケース1の上端部に設けている。当然、空気出口12は、空気入口11よりも高位置にある。空気入口11からケース1内に流入した空気は、ケース1内を下方から上方に流れて空気出口12に至る。空気出口12は、内燃機関の吸気通路に接続している。 The air outlet 12 is provided at the upper end of the case 1. Naturally, the air outlet 12 is located at a higher position than the air inlet 11. Air flowing into the case 1 from the air inlet 11 flows from the bottom to the top inside the case 1 and reaches the air outlet 12. The air outlet 12 is connected to the intake passage of the internal combustion engine.

フィルタ3は、空気入口11よりも高位置、空気出口12よりも低位置にあって水平方向に拡張しており、空気入口11から空気出口12に向かう空気を濾過し、その空気中に混入している異物を除去して異物が内燃機関の吸気通路に侵入することを阻止する。 The filter 3 is located at a higher position than the air inlet 11 and lower than the air outlet 12, and expands in the horizontal direction, and filters air flowing from the air inlet 11 toward the air outlet 12, and prevents air from being mixed in the air. To prevent foreign matter from entering the intake passage of an internal combustion engine by removing foreign matter from the engine.

縦壁13は、左右方向(図1の紙面に垂直な方向である)に沿って対向するケース1の一対の外側壁10の双方に連接または極近接するとともに、上下方向に拡張しており、ケース1内におけるフィルタ3の下方の空間を区画している。そして、縦壁13は、空気入口11に臨んでいる。図1中に矢印で表しているように、空気入口11からケース1内に流れ込んだ空気は、縦壁13に当たり、縦壁13に沿って上方に流れる。 The vertical wall 13 is connected to or very close to both of the pair of outer walls 10 of the case 1 that face each other along the left-right direction (the direction perpendicular to the paper surface of FIG. 1), and expands in the vertical direction. A space below the filter 3 in the case 1 is divided. The vertical wall 13 faces the air inlet 11. As indicated by arrows in FIG. 1, air flowing into the case 1 from the air inlet 11 hits the vertical wall 13 and flows upward along the vertical wall 13.

遮水壁2は、フィルタ3の下方、縦壁13の直上にあって、水平方向即ち前後方向及び左右方向に拡張している。遮水壁2は、断面視においてフィルタ3と略平行な平行部21及び当該平行部21と一体に設けられ空気入口11に近づく方向に傾く傾斜部22を有し、平行部21と傾斜部22との境界部位23が縦壁13よりも空気入口11側に位置する。この遮水壁2は、左右方向に沿って対向するケース1の一対の外側壁10の双方に連接または極近接するが、前後方向(図1の左右方向である)に沿って対向するケース1の一対の外側壁14からは離間している。図1中に矢印で表しているように、縦壁13に沿って上方に向かう空気の流れは、この遮水壁2の下面に当たって前後方向に分岐し、しかる後再び上方に流れてフィルタ3を通過する。 The water-blocking wall 2 is located below the filter 3 and directly above the vertical wall 13, and extends horizontally, that is, in the front-rear direction and the left-right direction. The water-shielding wall 2 has a parallel part 21 that is substantially parallel to the filter 3 in a cross-sectional view, and an inclined part 22 that is provided integrally with the parallel part 21 and is inclined in a direction approaching the air inlet 11. A boundary portion 23 between the vertical wall 13 and the air inlet 11 is located closer to the air inlet 11 than the vertical wall 13 is. This water-shielding wall 2 is connected to or very close to both of the pair of outer walls 10 of the case 1 facing each other along the left-right direction, but the case 1 facing each other along the front-rear direction (the left-right direction in FIG. 1) It is spaced apart from the pair of outer walls 14 of. As indicated by arrows in FIG. 1, the air flow that heads upward along the vertical wall 13 hits the lower surface of the water-blocking wall 2 and branches in the front-rear direction, and then flows upward again to pass through the filter 3. pass.

空気入口11から雨水や溜水が勢いよく入り込んだときには、遮水壁2がちょうどねずみ返しのように機能してその水を跳ね返し、水がフィルタ3を通過して空気出口12から内燃機関の吸気通路に侵入することを抑止する。 When rainwater or standing water enters forcefully from the air inlet 11, the impermeable wall 2 functions just like a mousetrap and bounces the water back, allowing the water to pass through the filter 3 and flow into the intake air of the internal combustion engine from the air outlet 12. Prevent people from entering the aisle.

空気入口11、空気出口12及び縦壁13は、ケース1に一体成形している。縦壁13は、ケース1の外側壁10の内向面から内方即ち左右方向に延出している。これに対し、フィルタ3及び遮水壁2はそれぞれ、ケース1とは別体をなし、ケース1内に後付けで取り付ける。 The air inlet 11, air outlet 12, and vertical wall 13 are integrally molded into the case 1. The vertical wall 13 extends inward from the inward surface of the outer wall 10 of the case 1, that is, in the left-right direction. On the other hand, the filter 3 and the water-shielding wall 2 are each separate from the case 1 and are installed inside the case 1 afterward.

因みに、ケース1の外側壁10の内向面には、上下方向に伸びるリブ15を複数設けている。リブ15は、縦壁13及び遮水壁2とともに、ケース1の剛性を補強する役割を担う。 Incidentally, a plurality of ribs 15 extending in the vertical direction are provided on the inward surface of the outer wall 10 of the case 1. The ribs 15 play the role of reinforcing the rigidity of the case 1 together with the vertical walls 13 and the water-shielding walls 2.

本実施形態では、内燃機関の吸気通路に清浄な空気を供給するためのエアクリーナであって、空気を導入する空気入口11と、前記空気入口11よりも高い位置にあり内燃機関の吸気通路に向けて空気を流出させる空気出口12と、前記空気入口11と前記空気出口12との間に介在し空気入口11から空気出口12に向かう空気を濾過するフィルタ3と、前記フィルタ3の下方にあって空気入口11から導入した空気の流れが当たる縦壁13と、前記フィルタ3の下方にありかつ前記縦壁13の直上に設けられ縦壁13に当たった空気の流れが直接フィルタ3に向かうことを遮る遮水壁2とを具備するエアクリーナを構成した。 This embodiment is an air cleaner for supplying clean air to the intake passage of an internal combustion engine, and includes an air inlet 11 for introducing air, and an air inlet 11 located at a higher position than the air inlet 11 and directed toward the intake passage of the internal combustion engine. an air outlet 12 through which air flows out; a filter 3 which is interposed between the air inlet 11 and the air outlet 12 and filters air flowing from the air inlet 11 toward the air outlet 12; and a filter 3 located below the filter 3. There is a vertical wall 13 that the air introduced from the air inlet 11 hits, and a vertical wall 13 that is located below the filter 3 and directly above the vertical wall 13 to ensure that the air that hits the vertical wall 13 goes directly to the filter 3. The air cleaner is equipped with a water-shielding wall 2.

本実施形態によれば、エアクリーナ内に入り込んだ雨水または溜水が内燃機関の吸気通路に至ることを適切に抑止できる。 According to this embodiment, rainwater or accumulated water that has entered the air cleaner can be appropriately prevented from reaching the intake passage of the internal combustion engine.

なお、本発明は以上に詳述した実施形態に限られるものではない。各部の具体的な構成は、本発明の趣旨を逸脱しない範囲で種々変形が可能である。 Note that the present invention is not limited to the embodiments detailed above. The specific configuration of each part can be modified in various ways without departing from the spirit of the present invention.

11…空気入口
12…空気出口
13…縦壁
2…遮水壁
3…フィルタ
11... Air inlet 12... Air outlet 13... Vertical wall 2... Water shielding wall 3... Filter

Claims (1)

内燃機関の吸気通路に清浄な空気を供給するためのエアクリーナであって、
空気を導入する空気入口と、
前記空気入口よりも高い位置にあり内燃機関の吸気通路に向けて空気を流出させる空気出口と、
前記空気入口と前記空気出口との間に介在し空気入口から空気出口に向かう空気を濾過するフィルタと、
前記フィルタの下方にあって空気入口から導入した空気の流れが当たる縦壁と、
前記フィルタの下方にありかつ前記縦壁の直上に設けられ縦壁に当たった空気の流れが直接フィルタに向かうことを遮る遮水壁と
を具備し、
前記遮水壁は、断面視において前記フィルタと略平行な平行部及び当該平行部と一体に設けられ前記空気入口に近づく方向に傾く傾斜部を有し、平行部と傾斜部との境界部位が前記縦壁よりも空気入口側に位置するエアクリーナ。
An air cleaner for supplying clean air to an intake passage of an internal combustion engine,
an air inlet for introducing air;
an air outlet that is located higher than the air inlet and allows air to flow out toward the intake passage of the internal combustion engine;
a filter that is interposed between the air inlet and the air outlet and filters air flowing from the air inlet to the air outlet;
a vertical wall located below the filter and against which the air flow introduced from the air inlet hits;
a water-blocking wall provided below the filter and directly above the vertical wall to block the flow of air that hits the vertical wall from going directly to the filter ;
The water-shielding wall has a parallel part that is substantially parallel to the filter in a cross-sectional view, and an inclined part that is provided integrally with the parallel part and is inclined in a direction approaching the air inlet, and the boundary between the parallel part and the inclined part is An air cleaner located closer to the air inlet than the vertical wall .
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011127548A (en) 2009-12-18 2011-06-30 Nissan Motor Co Ltd Air cleaner
JP2014177871A (en) 2013-03-13 2014-09-25 Toyota Boshoku Corp Air cleaner
JP2015075010A (en) 2013-10-08 2015-04-20 富士重工業株式会社 Air cleaner
JP2018084200A (en) 2016-11-24 2018-05-31 ダイハツ工業株式会社 Air cleaner for automobile
JP2018200031A (en) 2017-05-29 2018-12-20 スズキ株式会社 Air cleaner for motor cycle

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH087089Y2 (en) * 1989-09-04 1996-02-28 本田技研工業株式会社 Air cleaner device for engine
KR101624237B1 (en) * 2010-11-05 2016-05-25 현대자동차주식회사 Air Cleaner having Filters in Parallel-Structure
KR20190128774A (en) * 2018-05-09 2019-11-19 주식회사 리한 Air cleaner for vehicle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011127548A (en) 2009-12-18 2011-06-30 Nissan Motor Co Ltd Air cleaner
JP2014177871A (en) 2013-03-13 2014-09-25 Toyota Boshoku Corp Air cleaner
JP2015075010A (en) 2013-10-08 2015-04-20 富士重工業株式会社 Air cleaner
JP2018084200A (en) 2016-11-24 2018-05-31 ダイハツ工業株式会社 Air cleaner for automobile
JP2018200031A (en) 2017-05-29 2018-12-20 スズキ株式会社 Air cleaner for motor cycle

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