JP2016088244A - Intake system for internal combustion engine - Google Patents

Intake system for internal combustion engine Download PDF

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Publication number
JP2016088244A
JP2016088244A JP2014224031A JP2014224031A JP2016088244A JP 2016088244 A JP2016088244 A JP 2016088244A JP 2014224031 A JP2014224031 A JP 2014224031A JP 2014224031 A JP2014224031 A JP 2014224031A JP 2016088244 A JP2016088244 A JP 2016088244A
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Prior art keywords
vehicle
intake
air
side wall
duct
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JP2014224031A
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JP6417860B2 (en
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貴之 福重
Takayuki Fukushige
貴之 福重
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Suzuki Motor Corp
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Suzuki Motor Corp
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Priority to JP2014224031A priority Critical patent/JP6417860B2/en
Priority to CN201510731797.7A priority patent/CN105564222B/en
Priority to DE102015221488.5A priority patent/DE102015221488B4/en
Publication of JP2016088244A publication Critical patent/JP2016088244A/en
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    • 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
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10013—Means upstream of the air filter; Connection to the ambient air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
    • B60K13/02—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning intake
    • 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
    • F02M35/022—Air cleaners acting by gravity, by centrifugal, or by other inertial forces, e.g. with moistened walls
    • F02M35/0226—Air cleaners acting by gravity, by centrifugal, or by other inertial forces, e.g. with moistened walls by gravity or by mass inertia, e.g. labyrinths, deflectors
    • 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
    • F02M35/04—Air cleaners specially arranged with respect to engine, to intake system or specially adapted to vehicle; Mounting thereon ; Combinations with other devices
    • F02M35/048—Arranging or mounting on or with respect to engines or vehicle bodies
    • 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
    • F02M35/161—Arrangement of the air intake system in the engine compartment, e.g. with respect to the bonnet or the vehicle front face
    • 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
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10137—Flexible ducts, e.g. bellows or hoses

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an intake system for an internal combustion engine that can remove a foreign matter to introduce only air into an air cleaner and prevent the air cleaner from clogging.SOLUTION: An intake duct 15 of the intake system 30 includes: an upper wall 25 and a bottom wall 26 facing each other in a vertical direction of a vehicle 1; a side wall 27 connected to the upper wall 25 and the bottom wall 26 on the left side in a vehicle horizontal direction and formed with an air takeout port 18; and a side wall 28 connected to the upper wall 25 and the bottom wall 26 on the right side in the vehicle horizontal direction, where the side wall 27 has an inclined plane 27A receding from the side wall 28 as proceeding forward from a front end part 18a of the air takeout port 18.SELECTED DRAWING: Figure 4

Description

本発明は、内燃機関の吸気装置に関し、特に、空気から異物を除去してエアクリーナに導入する内燃機関の吸気装置に関する。   The present invention relates to an intake device for an internal combustion engine, and more particularly to an intake device for an internal combustion engine that removes foreign matter from the air and introduces it into an air cleaner.

自動車等の車両において、雪や埃等の異物を含んだ走行風が吸気ダクトを介してエアクリーナに侵入してしまい、エアクリーナの目詰まりを招くおそれがあるため、走行風から異物を排出する必要がある。   In vehicles such as automobiles, traveling wind containing foreign matter such as snow and dust may enter the air cleaner through the air intake duct and cause clogging of the air cleaner. is there.

従来のこの種の吸気装置としては、車両前方に開口する空気取入口とエンジンルーム内に開口する異物排出口とを車両前後方向の前端部と後端部とに備える吸気ダクトを、アッパメンバの上方に配設し、空気取入口と異物排出口との間でエアクリーナヘの空気を取り出す空気取出口を吸気ダクトに形成したものが知られている（例えば、特許文献１参照）。   As a conventional intake device of this type, an intake duct having an air intake opening that opens to the front of the vehicle and a foreign matter discharge opening that opens in the engine room at the front end portion and the rear end portion in the vehicle front-rear direction is provided above the upper member. And an air intake port formed in the intake duct for taking out air to the air cleaner between the air intake port and the foreign matter discharge port is known (see, for example, Patent Document 1).

特開２０１１−２１３３２８号公報JP 2011-213328 A

このような従来の内燃機関の吸気装置にあっては、異物を含んだ走行風が一定速度で、かつ走行風の流れが一定方向であるため、走行風が空気取出口付近に漂ってしまうおそれがある。   In such a conventional internal combustion engine intake device, the traveling wind containing foreign matter has a constant speed and the traveling wind flows in a certain direction, and therefore the traveling wind may drift near the air outlet. There is.

これに加えて、吸気ダクト内を流れる走行風の流れる角度を変えて走行風を空気取出口から遠ざけることにより、異物が空気取出口に侵入することを防止する構造となっていない。これにより、異物が空気取出口からエアクリーナに侵入するおそれがあり、エアクリーナの目詰まりを招くおそれが未だある。   In addition to this, the structure does not prevent foreign matter from entering the air outlet by changing the angle of the traveling wind flowing through the intake duct to keep the traveling wind away from the air outlet. Thereby, there is a possibility that foreign matter may enter the air cleaner from the air outlet, and there is still a possibility that the air cleaner will be clogged.

本発明は、上記のような問題点に着目してなされたものであり、異物を除去して空気のみをエアクリーナに導入することができ、エアクリーナが目詰まりすることを防止できる内燃機関の吸気装置を提供することを目的とするものである。   The present invention has been made paying attention to the above problems, and can remove foreign matter and introduce only air into the air cleaner, thereby preventing the air cleaner from being clogged. Is intended to provide.

本発明は、車両の前後方向前方に開口する空気取入口と、空気取入口に対して車両の前後方向後方に設けられた異物排出口および空気取入口と異物排出口との間に設けられた空気取出口を有する吸気ダクトと、空気取出口に連通する吸気通路を有し、一端部が吸気ダクトに取付けられたインレットダクトと、インレットダクトの他端部が取付けられ、インレットダクトの吸気通路を介して導入される空気を浄化するエアクリーナとを備えた内燃機関の吸気装置であって、吸気ダクトは、車両の上下方向に対向する上壁および底壁と、車両の幅方向一方側において上壁および底壁に接続され、空気取出口が形成される第１の側壁と、車両の幅方向他方側において上壁および底壁に接続された第２の側壁とを含んで構成され、第１の側壁は、空気取出口の車両の前後方向前端部から車両の前後方向前方に向かうに従って第２の側壁から遠ざかる傾斜面を有するものから構成されている。   The present invention is provided between an air intake opening that opens forward in the front-rear direction of the vehicle, a foreign matter discharge port provided at the rear of the vehicle in the front-rear direction of the vehicle, and between the air intake port and the foreign matter discharge port. An intake duct having an air outlet, an intake passage communicating with the air outlet, an inlet duct having one end attached to the intake duct, and the other end of the inlet duct being attached to the inlet duct. An air intake device for an internal combustion engine having an air cleaner that purifies air introduced through the air intake duct, wherein the air intake duct includes an upper wall and a bottom wall facing the vertical direction of the vehicle, and an upper wall on one side in the width direction of the vehicle And a first side wall connected to the bottom wall and forming an air outlet, and a second side wall connected to the top wall and the bottom wall on the other side in the width direction of the vehicle. Side wall is air And a material having an inclined surface away from the second side wall toward the front-rear direction front end of the vehicle of the exit in the front-rear direction front of the vehicle.

本発明によれば、吸気ダクトの第１の側壁が、空気取出口の車両の前後方向前端部から車両の前後方向前方に向かうに従って第２の側壁から遠ざかる傾斜面を有する。   According to the present invention, the first side wall of the air intake duct has an inclined surface that moves away from the second side wall from the front end in the front-rear direction of the air intake port toward the front in the front-rear direction of the vehicle.

これにより、空気取入口から取入れられた走行風の流れを、第２の側壁に沿って車両の後方に流れる第１の走行風の流れと、第１の側壁の傾斜面に沿って車両の斜め後方に流れる第２の走行風の流れにできる。   As a result, the flow of the traveling wind taken from the air intake port is changed into the first traveling wind flow that flows rearward of the vehicle along the second side wall and the slant of the vehicle along the inclined surface of the first side wall. This can be the flow of the second traveling wind that flows backward.

このため、第１の走行風に第２の走行風を衝突させて異物を含んだ走行風を空気取出口から遠ざけることができ、異物が混入した走行風が空気取出口に侵入することを防止できる。   For this reason, the second traveling wind can collide with the first traveling wind to keep the traveling wind including foreign matter away from the air outlet, and the traveling wind mixed with foreign matter is prevented from entering the air outlet. it can.

これに加えて、第１の走行風に第２の走行風を衝突させることで、空気取出口の付近で異物を含んだ走行風の流速を速くでき、流速の速い走行風によって異物を異物排出口から排出することができる。
この結果、異物が除去された空気のみを空気取出口からインレットダクトを介してエアクリーナに導入でき、エアクリーナの目詰まりが発生することを防止できる。 In addition, by causing the second traveling wind to collide with the first traveling wind, the flow velocity of the traveling wind including foreign matter can be increased in the vicinity of the air outlet, and the foreign matter is removed by the traveling wind having a high flow velocity. It can be discharged from the outlet.
As a result, only air from which foreign matter has been removed can be introduced into the air cleaner from the air outlet through the inlet duct, and clogging of the air cleaner can be prevented.

図１は、本発明の内燃機関の吸気装置の一実施の形態を示す図であり、車両前部の平面図である。FIG. 1 is a diagram showing an embodiment of an intake device for an internal combustion engine according to the present invention, and is a plan view of a front portion of a vehicle. 図２は、本発明の内燃機関の吸気装置の一実施の形態を示す図であり、車両前部の側面図である。FIG. 2 is a view showing an embodiment of an intake device for an internal combustion engine according to the present invention, and is a side view of the front portion of the vehicle. 図３は、本発明の内燃機関の吸気装置の一実施の形態を示す図であり、車両前部の正面図である。FIG. 3 is a view showing an embodiment of an intake device for an internal combustion engine according to the present invention, and is a front view of the front portion of the vehicle. 図４は、本発明の内燃機関の吸気装置の一実施の形態を示す図であり、図１の吸気ダクトのIＶ−IＶ方向矢視断面図である。FIG. 4 is a view showing an embodiment of an intake device for an internal combustion engine according to the present invention, and is a cross-sectional view taken along the line IV-IV of the intake duct of FIG. 図５は、本発明の内燃機関の吸気装置の一実施の形態を示す図であり、図２の吸気ダクトのＶ−Ｖ方向矢視断面図である。5 is a view showing an embodiment of an intake device for an internal combustion engine according to the present invention, and is a cross-sectional view taken along the VV direction of the intake duct of FIG.

以下、本発明に係る内燃機関の吸気装置の実施の形態について、図面を用いて説明する。
図１〜図５は、本発明に係る一実施の形態の内燃機関の吸気装置を示す図である。
まず、構成を説明する。なお、図１〜図５において、左右前後方向は、運転席から見た車両の左右前後方向を表す。 Embodiments of an intake device for an internal combustion engine according to the present invention will be described below with reference to the drawings.
1 to 5 are views showing an intake device for an internal combustion engine according to an embodiment of the present invention.
First, the configuration will be described. 1-5, the left-right front-rear direction represents the left-right front-rear direction of the vehicle as viewed from the driver's seat.

図１、図２において、自動車等の車両１は、車体２を備えており、車体２は、ダッシュパネル３によって車両１の前方側のエンジンルーム４と車両１の後方側の車室５とが仕切られる。ここで、前方および後方という表現は、車両１の前後方向前方および前後方向後方を示す。
エンジンルーム４には内燃機関としてのエンジン６が設けられている。エンジン６は、シリンダブロック７と、シリンダブロック７の上部に設けられたシリンダヘッド８と、シリンダブロック７の下部に設けられたオイルパン９とを備えている。 1 and 2, a vehicle 1 such as an automobile includes a vehicle body 2, and the vehicle body 2 includes an engine room 4 on the front side of the vehicle 1 and a vehicle room 5 on the rear side of the vehicle 1 by a dash panel 3. Partitioned. Here, the expressions “front” and “rear” indicate the front-rear direction front and the front-rear direction rear of the vehicle 1.
The engine room 4 is provided with an engine 6 as an internal combustion engine. The engine 6 includes a cylinder block 7, a cylinder head 8 provided at the upper part of the cylinder block 7, and an oil pan 9 provided at the lower part of the cylinder block 7.

シリンダブロック７には図示しないシリンダ内に上下動自在に収容された図示しないピストンと、ピストンの上下運動を回転運動に変換する図示しないクランク軸等が収容されている。なお、クランク軸は、車両１の幅方向に延在している。
シリンダブロック７の車両１の幅方向（以下、車両１の幅方向を車幅方向という）の左端にはトランスミッション１０が取付けられており、トランスミッション１０は、クランク軸の回転数を変更して図示しない駆動輪に動力を伝達する。 The cylinder block 7 houses a piston (not shown) accommodated in a cylinder (not shown) so as to be movable up and down, a crankshaft (not shown) that converts the vertical movement of the piston into a rotational motion, and the like. The crankshaft extends in the width direction of the vehicle 1.
A transmission 10 is attached to the left end of the cylinder block 7 in the width direction of the vehicle 1 (hereinafter, the width direction of the vehicle 1 is referred to as the vehicle width direction). The transmission 10 is not illustrated by changing the number of rotations of the crankshaft. Power is transmitted to the drive wheels.

図１〜図３において、エンジンルーム４の前側にはアッパメンバ１１が設けられており、エンジン６は、エンジンルーム４においてアッパメンバ１１よりも後方に設けられている。エンジン６の前方にはラジエータ１２が設けられている。ラジエータ１２は、空気（走行風）と熱交換されることによって冷却水を冷却するコア部１２Ａと、コア部１２Ａの上部に設けられたアッパタンク１２Ｂと、コア部１２Ａの下部に設けられたロアタンク１２Ｃとを備えている。   1 to 3, an upper member 11 is provided on the front side of the engine room 4, and the engine 6 is provided behind the upper member 11 in the engine room 4. A radiator 12 is provided in front of the engine 6. The radiator 12 includes a core portion 12A that cools cooling water by heat exchange with air (running wind), an upper tank 12B provided on the upper portion of the core portion 12A, and a lower tank 12C provided on the lower portion of the core portion 12A. And.

アッパタンク１２Ｂには一端部がシリンダブロック７に取付けられたインレット配管１３の他端部が取付けられており（図１参照）、ロアタンク１２Ｃには一端部がシリンダブロック７に取付けられたアウトレット配管１４の他端部が取付けられている（図２、図３参照）。
インレット配管１３は、シリンダブロック７から導出される冷却水をアッパタンク１２Ｂに導入する。ラジエータ１２は、アッパタンク１２Ｂに導入された冷却水をコア部１２Ａによって走行風と熱交換する。走行風と熱交換された冷却水は、コア部１２Ａからロアタンク１２Ｃに導入された後、アウトレット配管１４に導入される。 The other end of the inlet pipe 13 having one end attached to the cylinder block 7 is attached to the upper tank 12B (see FIG. 1), and the outlet pipe 14 having one end attached to the cylinder block 7 is attached to the lower tank 12C. The other end is attached (see FIGS. 2 and 3).
The inlet pipe 13 introduces cooling water led out from the cylinder block 7 into the upper tank 12B. The radiator 12 exchanges heat between the cooling water introduced into the upper tank 12B and traveling wind by the core portion 12A. The cooling water heat-exchanged with the traveling wind is introduced into the outlet tank 14 after being introduced into the lower tank 12C from the core portion 12A.

アウトレット配管１４は、コア部１２Ａで冷却された低温の冷却水をシリンダブロック７およびシリンダヘッド８に導入する。これにより、エンジン６の各部が冷却水によって冷却される。
図１、図２において、エンジン６の前方で、かつアッパメンバ１１の上方には吸気ダクト１５が設けられており、吸気ダクト１５は、アッパメンバ１１に固定されている。 The outlet pipe 14 introduces low-temperature cooling water cooled by the core portion 12 </ b> A into the cylinder block 7 and the cylinder head 8. Thereby, each part of the engine 6 is cooled by the cooling water.
1 and 2, an intake duct 15 is provided in front of the engine 6 and above the upper member 11, and the intake duct 15 is fixed to the upper member 11.

図４、図５において、吸気ダクト１５は、車両１の前方に開口して車両１の前方から走行風（空気）を取り入れる空気取入口１６と、空気取入口１６に対して後方に設けられ、走行風に含まれる雪や埃等の異物を排出する異物排出口１７と、空気取入口１６と異物排出口１７との間に設けられた空気取出口１８とを有する。   4 and 5, the intake duct 15 is provided in the rear of the air intake 16, which opens to the front of the vehicle 1 and takes in traveling wind (air) from the front of the vehicle 1. It has a foreign matter outlet 17 for discharging foreign matters such as snow and dust contained in the traveling wind, and an air outlet 18 provided between the air inlet 16 and the foreign matter outlet 17.

吸気ダクト１５の内部には吸気通路１５Ａが形成されており、吸気通路１５Ａは、空気取入口１６、異物排出口１７および空気取出口１８に連通している。
吸気ダクト１５にはインレットダクト１９の一端部１９ａが一体的に取付けられており、インレットダクト１９の内部の吸気通路１９Ａは、空気取出口１８を通して吸気通路１５Ａに連通している。 An intake passage 15 </ b> A is formed inside the intake duct 15, and the intake passage 15 </ b> A communicates with the air intake port 16, the foreign matter discharge port 17 and the air intake port 18.
One end portion 19 a of an inlet duct 19 is integrally attached to the intake duct 15, and an intake passage 19 </ b> A inside the inlet duct 19 communicates with the intake passage 15 </ b> A through an air outlet 18.

インレットダクト１９の他端部１９ｂは、エアクリーナ２０に取付けられており、エアクリーナ２０にはインレットダクト１９の吸気通路１９Ａを通して走行風が導入される。エアクリーナ２０は、吸気ダクト１５よりも後方に位置しており、エアクリーナ２０は、シリンダヘッド８の上部に取付けられている。   The other end 19 b of the inlet duct 19 is attached to the air cleaner 20, and traveling air is introduced into the air cleaner 20 through the intake passage 19 A of the inlet duct 19. The air cleaner 20 is located behind the intake duct 15, and the air cleaner 20 is attached to the upper part of the cylinder head 8.

エアクリーナ２０には図示しないフィルタエレメントが内蔵されており、エアクリーナ２０は、吸気ダクト１５からインレットダクト１９を通して導入される走行風をフィルタエレメントによって浄化する。
また、インレットダクト１９の延びる方向の中央部には蛇腹部１９Ｂが形成されており、インレットダクト１９は、変形自在に形成されている。また、本実施の形態の吸気ダクト１５およびインレットダクト１９は、ゴム等の弾性部材から構成されており、一体で成形されている。 A filter element (not shown) is built in the air cleaner 20, and the air cleaner 20 purifies the traveling wind introduced from the intake duct 15 through the inlet duct 19 by the filter element.
Moreover, the bellows part 19B is formed in the center part of the direction where the inlet duct 19 is extended, and the inlet duct 19 is formed deformably. Further, the intake duct 15 and the inlet duct 19 of the present embodiment are made of an elastic member such as rubber and are integrally formed.

図２において、シリンダヘッド８の後部には吸気マニホールド２１が設けられており、吸気マニホールド２１は、エアクリーナ２０から導入される空気を、シリンダヘッド８に形成された図示しない吸気ポートを介してシリンダに導入する。   In FIG. 2, an intake manifold 21 is provided at the rear portion of the cylinder head 8, and the intake manifold 21 allows air introduced from the air cleaner 20 to enter the cylinder through an intake port (not shown) formed in the cylinder head 8. Introduce.

図３において、シリンダヘッド８の前部には排気マニホールド２２がシリンダヘッド８と一体で設けられており、排気マニホールド２２は、シリンダ内で燃焼された排気ガスを、シリンダヘッド８に形成された図示しない排気ポートを通して排出する。   In FIG. 3, an exhaust manifold 22 is provided integrally with the cylinder head 8 at the front portion of the cylinder head 8, and the exhaust manifold 22 is formed in the cylinder head 8 with exhaust gas burned in the cylinder. Do not exhaust through exhaust port.

排気マニホールド２２には触媒コンバータ２３が接続されており、触媒コンバータ２３は、排気マニホールド２２から排出される排気ガスを浄化し、図示しない排気管に排出する。   A catalytic converter 23 is connected to the exhaust manifold 22, and the catalytic converter 23 purifies the exhaust gas discharged from the exhaust manifold 22 and discharges it to an exhaust pipe (not shown).

図４、図５において、吸気ダクト１５は、車両１の上下方向に対向する上壁２５および底壁２６と、車両１の車幅方向の一方側である車幅方向左方において上壁２５および底壁２６に接続され、空気取出口１８が形成される側壁２７と、車両の幅方向他方側である車幅方向右方において上壁２５および底壁２６に接続された側壁２８とを含んで構成される。
ここで、本実施の形態の側壁２７は、本発明の第１の側壁を構成し、側壁２８は、本発明の第２の側壁を構成する。 4 and 5, the intake duct 15 includes an upper wall 25 and a bottom wall 26 facing the vertical direction of the vehicle 1, and the upper wall 25 and the left side in the vehicle width direction on one side of the vehicle 1. It includes a side wall 27 connected to the bottom wall 26 and formed with the air outlet 18, and a side wall 28 connected to the top wall 25 and the bottom wall 26 on the right side in the vehicle width direction, which is the other side in the width direction of the vehicle. Composed.
Here, the side wall 27 of the present embodiment constitutes the first side wall of the present invention, and the side wall 28 constitutes the second side wall of the present invention.

側壁２７は傾斜面２７Ａを備えており、傾斜面２７Ａは、空気取出口１８の前端部１８ａから前方に向かうに従って側壁２８から遠ざかるように傾斜している。すなわち、吸気ダクト１５は、空気取入口１６から後方に向かうに従って車幅方向の断面積が漸次小さく形成される。   The side wall 27 includes an inclined surface 27 </ b> A, and the inclined surface 27 </ b> A is inclined so as to move away from the side wall 28 toward the front from the front end portion 18 a of the air outlet 18. That is, the intake duct 15 is formed such that the cross-sectional area in the vehicle width direction gradually decreases from the air intake port 16 toward the rear.

インレットダクト１９の一端部１９ａ側は、吸気ダクト１５の側壁２８の延びる方向に対して直交しており、空気取入口１６から吸気通路１５Ａに取り入れられた走行風は、吸気通路１５Ａから空気取出口１８を通して急激に曲げられてインレットダクト１９の吸気通路１９Ａに導入される。   One end 19a side of the inlet duct 19 is orthogonal to the direction in which the side wall 28 of the intake duct 15 extends, so that the traveling wind taken from the air intake 16 into the intake passage 15A flows from the intake passage 15A to the air intake. 18 is abruptly bent through 18 and introduced into the intake passage 19 </ b> A of the inlet duct 19.

図４において、吸気ダクト１５に対して、傾斜面２７Ａに沿って車両１の斜め後方に延びる第１の仮想平面９１と、第１の仮想平面９１と側壁２８とが交差する交差部９２と、交差部９２を通過して車幅方向に横切る第２の仮想平面９３とを形成する。   In FIG. 4, a first virtual plane 91 extending obliquely rearward of the vehicle 1 along the inclined surface 27 </ b> A with respect to the intake duct 15, and an intersection 92 where the first virtual plane 91 and the side wall 28 intersect each other, A second virtual plane 93 that passes through the intersection 92 and crosses in the vehicle width direction is formed.

この場合に、空気取出口１８は、傾斜面２７Ａの後端部２７ａと第２の仮想平面９３との間に位置するように側壁２７に形成される。ここで、空気取入口１６の前端部１８ａと傾斜面２７Ａの後端部２７ａとは、略同じ位置である。
異物排出口１７は、車両１の下方に向かって開放しており（図２参照）、走行風から除去される異物は、走行風の風力と自重とによって走行風３４で示すように異物排出口１７から下方に円滑に排出される。 In this case, the air outlet 18 is formed in the side wall 27 so as to be positioned between the rear end portion 27a of the inclined surface 27A and the second virtual plane 93. Here, the front end portion 18a of the air intake port 16 and the rear end portion 27a of the inclined surface 27A are substantially at the same position.
The foreign matter discharge port 17 is open toward the lower side of the vehicle 1 (see FIG. 2), and the foreign matter removed from the traveling wind is a foreign matter discharge port as shown by the traveling wind 34 by the wind force and the own weight of the traveling wind. 17 is smoothly discharged downward.

図４、図５において、空気取出口１８は、後端部１８ｂが第２の仮想平面９３上に位置するように側壁２７に形成されている。なお、空気取出口１８は、後端部１８ｂが第２の仮想平面９３よりも前方に位置するように側壁２７に形成されてもよい。   4 and 5, the air outlet 18 is formed in the side wall 27 so that the rear end portion 18 b is located on the second virtual plane 93. Note that the air outlet 18 may be formed in the side wall 27 so that the rear end portion 18 b is positioned in front of the second virtual plane 93.

図４に示すように、車両１の平面視において、空気取入口１６は、車幅方向で空気取出口１８から側壁２８までの通路幅９４と同寸法の第１の空気取入口１６Ａと、車幅方向で空気取出口１８の前端部１８ａから側壁２７の前端部、すなわち、傾斜面２７Ａの前端部２７ｂまでの通路幅９５を有する第２の空気取入口１６Ｂとを有する。
これら第１の空気取入口１６Ａの通路幅９４（車幅方向の寸法）と第２の空気取入口１６Ｂの通路幅９５（車幅方向の寸法）とは、同寸法に形成されている。 As shown in FIG. 4, in a plan view of the vehicle 1, the air intake 16 includes a first air intake 16 </ b> A having the same size as the passage width 94 from the air intake 18 to the side wall 28 in the vehicle width direction, A second air intake port 16B having a passage width 95 from the front end portion 18a of the air intake port 18 to the front end portion of the side wall 27, that is, the front end portion 27b of the inclined surface 27A in the width direction.
The passage width 94 (dimension in the vehicle width direction) of the first air intake port 16A and the passage width 95 (dimension in the vehicle width direction) of the second air intake port 16B are formed to have the same dimension.

図５において、吸気ダクト１５の上壁２５は、空気取出口１８から後方に向かって下方に傾斜しており、吸気ダクト１５の吸気通路１５Ａは、空気取入口１６から後方に向かうに従って漸次小さく形成されている。ここで、本実施の形態の吸気ダクト１５、インレットダクト１９およびエアクリーナ２０は、本発明の吸気装置３０を構成する。   In FIG. 5, the upper wall 25 of the intake duct 15 is inclined downward from the air intake port 18 toward the rear, and the intake passage 15 </ b> A of the intake duct 15 is gradually formed smaller from the air intake port 16 toward the rear. Has been. Here, the intake duct 15, the inlet duct 19 and the air cleaner 20 of the present embodiment constitute the intake device 30 of the present invention.

次に、作用を説明する。
本実施の形態の吸気ダクト１５は、アッパメンバ１１の上方に設置されているため、車両１の走行時に空気取入口１６から多くの走行風を取り入れることができる。また、吸気ダクト１５は、多くの走行風を取り入れることができることから、車両１の走行時に雪や埃等の異物を取り込み易く、異物がエアクリーナ２０のフィルタエレメントに付着してフィルタエレメントが目詰まりするおそれがある。 Next, the operation will be described.
Since the intake duct 15 of the present embodiment is installed above the upper member 11, a large amount of traveling wind can be taken from the air intake port 16 when the vehicle 1 is traveling. Further, since the intake duct 15 can take in a large amount of traveling wind, it is easy to take in foreign matters such as snow and dust when the vehicle 1 is running, and the foreign matter adheres to the filter element of the air cleaner 20 and is clogged. There is a fear.

この対策としては、本実施の形態の吸気装置３０によれば、吸気ダクト１５を、車両１の上下方向に対向する上壁２５および底壁２６と、車幅方向左方において上壁２５および底壁２６に接続され、空気取出口１８が形成される側壁２７と、車幅方向右方において上壁２５および底壁２６に接続された側壁２８とを含んで構成し、側壁２７に、空気取出口１８の前端部１８ａから前方に向かうに従って側壁２８から遠ざかる傾斜面２７Ａを設けた。   As a countermeasure, according to the intake device 30 of the present embodiment, the intake duct 15 is divided into the upper wall 25 and the bottom wall 26 facing the vertical direction of the vehicle 1 and the upper wall 25 and the bottom wall on the left side in the vehicle width direction. A side wall 27 connected to the wall 26 and having the air intake port 18 formed therein and a side wall 28 connected to the upper wall 25 and the bottom wall 26 on the right side in the vehicle width direction are configured. An inclined surface 27 </ b> A is provided that moves away from the side wall 28 toward the front from the front end 18 a of the outlet 18.

これにより、空気取入口１６から取り入れられた走行風の流れを、側壁２８に沿って後方に流れる第１の走行風３１の流れと、側壁２７の傾斜面２７Ａに沿って車両１の斜め後方に流れる第２の走行風３２の流れにできる。   As a result, the flow of the traveling wind taken in from the air intake 16 is made to flow obliquely rearward of the vehicle 1 along the inclined surface 27A of the side wall 27 and the flow of the first traveling wind 31 flowing rearward along the side wall 28. It can be made the flow of the 2nd running wind 32 which flows.

このため、第１の走行風３１に第２の走行風３２を衝突させて異物を含んだ走行風を空気取出口１８から遠ざけることができ、異物が混入した走行風が空気取出口１８に侵入することを防止できる。   For this reason, the second traveling wind 32 collides with the first traveling wind 31 so that the traveling wind including foreign matter can be moved away from the air outlet 18, and the traveling wind mixed with foreign matter enters the air outlet 18. Can be prevented.

これに加えて、第１の走行風３１に第２の走行風３２を衝突させることで、空気取出口１８の付近で異物を含んだ走行風の流速を速くでき、流速の速い走行風によって異物を異物排出口１７から排出することができる。   In addition to this, by causing the second traveling wind 32 to collide with the first traveling wind 31, the flow velocity of the traveling wind including foreign matter can be increased in the vicinity of the air outlet 18, and the traveling wind having a high flow velocity can increase the foreign matter. Can be discharged from the foreign matter discharge port 17.

この結果、異物が除去された空気３３のみを空気取出口１８からインレットダクト１９を介してエアクリーナ２０に導入でき、エアクリーナ２０のフィルタエレメントの目詰まりが発生することを防止できる。   As a result, only the air 33 from which foreign matter has been removed can be introduced into the air cleaner 20 from the air outlet 18 via the inlet duct 19, and clogging of the filter element of the air cleaner 20 can be prevented.

また、本実施の形態の吸気装置３０によれば、インレットダクト１９の一端部１９ａ側を、吸気ダクト１５の側壁２８の延びる方向に対して直交させた。
これにより、吸気ダクト１５に導入された走行風を、空気取出口１８を通してインレットダクト１９の吸気通路１９Ａに急激に曲げて導入でき、異物がインレットダクト１９に導入されることをより効果的に防止できる。 Further, according to the intake device 30 of the present embodiment, the one end 19 a side of the inlet duct 19 is orthogonal to the direction in which the side wall 28 of the intake duct 15 extends.
As a result, the traveling wind introduced into the intake duct 15 can be suddenly bent and introduced into the intake passage 19 </ b> A of the inlet duct 19 through the air outlet 18, and foreign substances are more effectively prevented from being introduced into the inlet duct 19. it can.

また、本実施の形態の吸気装置３０によれば、吸気ダクト１５に対して、傾斜面２７Ａに沿って車両１の斜め後方に延びる第１の仮想平面９１と、第１の仮想平面９１と側壁２８とが交差する交差部９２と、交差部９２を通過して車両１の幅方向に横切る第２の仮想平面９３とを形成した場合に、空気取出口１８が、傾斜面２７Ａの後端部２７ａと第２の仮想平面９３との間に位置するように側壁２７に形成される。   In addition, according to the intake device 30 of the present embodiment, the first virtual plane 91 that extends obliquely rearward of the vehicle 1 along the inclined surface 27A with respect to the intake duct 15, the first virtual plane 91, and the side wall 28 and the second imaginary plane 93 that passes through the intersection 92 and crosses in the width direction of the vehicle 1, the air outlet 18 has a rear end portion of the inclined surface 27 </ b> A. It is formed on the side wall 27 so as to be positioned between 27 a and the second virtual plane 93.

これにより、空気取出口１８の付近において、側壁２８に沿って車両１の後方に流れる第１の走行風３１に、側壁２７の傾斜面２７Ａに沿って車両１の斜め後方に流れる第２の走行風３２を衝突させて合流できる。このため、空気取出口１８の付近において、異物を含んだ走行風を空気取出口１８から遠ざけながら流速の速い走行風の流れを作り出すことができる。   As a result, in the vicinity of the air outlet 18, the first traveling wind 31 that flows to the rear of the vehicle 1 along the side wall 28 and the second traveling that flows to the rear of the vehicle 1 along the inclined surface 27 </ b> A of the side wall 27. The wind 32 can collide and merge. For this reason, in the vicinity of the air outlet 18, it is possible to create a flow of traveling wind having a high flow velocity while keeping the traveling wind including foreign matter away from the air outlet 18.

したがって、流速の速い走行風の流れによって異物を異物排出口１７からより効果的に排出して、空気取出口１８からインレットダクト１９を介してエアクリーナ２０に空気３３のみをより効果的に導入できる。   Therefore, the foreign matter can be more effectively discharged from the foreign matter discharge port 17 by the flow of the traveling wind having a high flow velocity, and only the air 33 can be more effectively introduced from the air outlet 18 into the air cleaner 20 via the inlet duct 19.

また、本実施の形態の吸気装置３０によれば、空気取出口１８の後端部１８ｂが第２の仮想平面９３上に位置するように空気取出口１８が側壁２７に形成される。
これにより、空気取出口１８の付近において、側壁２８に沿って車両１の後方に流れる第１の走行風３１に、側壁２７の傾斜面２７Ａに沿って車両１の斜め後方に流れる第２の走行風３２をより効果的に衝突させて合流できる。このため、空気取出口１８の付近において、異物を含んだ走行風を空気取出口１８から遠ざけながら流速の速い走行風の流れをより効果的に作り出すことができる。 Further, according to the intake device 30 of the present embodiment, the air outlet 18 is formed in the side wall 27 so that the rear end portion 18 b of the air outlet 18 is located on the second virtual plane 93.
As a result, in the vicinity of the air outlet 18, the first traveling wind 31 that flows to the rear of the vehicle 1 along the side wall 28 and the second traveling that flows to the rear of the vehicle 1 along the inclined surface 27 </ b> A of the side wall 27. The wind 32 can collide more effectively and can merge. For this reason, in the vicinity of the air outlet 18, it is possible to more effectively create a flow of traveling wind having a high flow velocity while keeping the traveling wind including foreign matter away from the air outlet 18.

したがって、流速の速い走行風の流れによって異物を異物排出口１７からより効果的に排出して、空気取出口１８からインレットダクト１９を介してエアクリーナ２０に空気３３のみを確実に導入できる。   Therefore, the foreign matter can be more effectively discharged from the foreign matter discharge port 17 by the flow of the traveling wind having a high flow velocity, and only the air 33 can be reliably introduced from the air outlet 18 into the air cleaner 20 through the inlet duct 19.

さらに、第１の走行風３１が傾斜面２７Ａに沿って側壁２８に衝突した場合に、空気取出口１８よりも車両１の後方で走行風の流れが乱れたり、側壁２８から側壁２７側に跳ね返ったりしても、空気取出口１８に異物を含んだ走行風が侵入することを防止できる。   Further, when the first traveling wind 31 collides with the side wall 28 along the inclined surface 27A, the flow of the traveling wind is disturbed behind the vehicle 1 from the air outlet 18 or rebounds from the side wall 28 toward the side wall 27. Even if it is, it can prevent that the driving | running | winding wind containing a foreign material penetrate | invades into the air intake port 18.

また、本実施の形態の吸気装置３０によれば、車両１の平面視において、空気取入口１６が、車両１の幅方向で空気取出口１８から側壁２８までの通路幅９４と同寸法の第１の空気取入口１６Ａと、車両１の幅方向で空気取出口１８の前端部１８ａから側壁２７の前端部２７ｂまでの通路幅９５と同寸法の第２の空気取入口１６Ｂとを有し、第１の空気取入口１６Ａの車両１の通路幅９４の寸法と第２の空気取入口１６Ｂの通路幅９５の寸法とを同寸法に形成した。   Further, according to the intake device 30 of the present embodiment, the air intake port 16 has the same dimension as the passage width 94 from the air intake port 18 to the side wall 28 in the width direction of the vehicle 1 in a plan view of the vehicle 1. A first air intake port 16A, and a second air intake port 16B having the same size as the passage width 95 from the front end portion 18a of the air intake port 18 to the front end portion 27b of the side wall 27 in the width direction of the vehicle 1, The dimension of the passage width 94 of the vehicle 1 of the first air intake 16A and the dimension of the passage width 95 of the second air intake 16B are formed to be the same dimension.

これにより、第１の空気取入口１６Ａの開口面積と第２の空気取入口１６Ｂの開口面積とを同一面積にできる。このため、第１の空気取入口１６Ａから導入されて側壁２８に沿って流れる第１の走行風３１の風量と第２の空気取入口１８Ｂから導入されて傾斜面２７Ａに沿って流れる第２の走行風３２の風量とを同じにできる。   Thereby, the opening area of 16 A of 1st air intakes and the opening area of the 2nd air intake 16B can be made the same area. For this reason, the air volume of the first traveling wind 31 that is introduced from the first air intake 16A and flows along the side wall 28 and the second air flow that is introduced from the second air intake 18B and flows along the inclined surface 27A. The air volume of the traveling wind 32 can be made the same.

したがって、空気取出口１８の付近において、第１の走行風３１に第２の走行風３２をより効果的に衝突させて合流でき、空気取出口１８の付近において、異物を含んだ走行風を空気取出口１８から遠ざけながら流速の速い走行風の流れをより効果的に作り出すことができる。   Therefore, the second traveling wind 32 can collide with the first traveling wind 31 more effectively in the vicinity of the air outlet 18 and can be merged. A flow of a traveling wind having a high flow velocity can be created more effectively while being away from the take-out port 18.

これに加えて、側壁２８に対する側壁２７の傾斜面２７Ａの傾斜角度を４５°に形成できる。これにより、空気取出口１８の付近において、第２の空気取入口１６Ｂから導入された第２の走行風３２が４５°の角度を保ったまま、車両１の後方に流れる第１の走行風３１に衝突できる。   In addition, the inclination angle of the inclined surface 27A of the side wall 27 with respect to the side wall 28 can be formed at 45 °. Thereby, in the vicinity of the air intake port 18, the first traveling wind 31 flowing behind the vehicle 1 while the second traveling wind 32 introduced from the second air intake port 16 </ b> B maintains an angle of 45 °. Can collide with.

このため、空気取出口１８の付近において、異物が混入した走行風を側壁２７から側壁２８に向けて車両１の幅方向に押し流すような走行風の流れを形成できる。したがって、異物を含んだ走行風を空気取出口１８から遠ざけながら流速の速い走行風の流れを作り出すことができる。   For this reason, in the vicinity of the air outlet 18, it is possible to form a flow of traveling wind in which the traveling wind mixed with foreign matters is pushed from the side wall 27 toward the side wall 28 in the width direction of the vehicle 1. Accordingly, it is possible to create a flow of traveling wind having a high flow velocity while keeping the traveling wind including foreign matter away from the air outlet 18.

この結果、流速の速い走行風の流れによって異物を異物排出口１７からより効果的に排出して、空気取出口１８からインレットダクト１９を介してエアクリーナ２０に空気３３のみをより効果的に導入できる。   As a result, foreign matter can be more effectively discharged from the foreign matter discharge port 17 by the flow of the traveling wind having a high flow velocity, and only the air 33 can be more effectively introduced from the air outlet 18 through the inlet duct 19 into the air cleaner 20. .

また、本実施の形態の吸気装置３０によれば、吸気ダクト１５の上壁が、空気取出口１８から後方に向かって下方に傾斜し、吸気ダクト１５の吸気通路が、空気取入口１６から後方に向かうに従って漸次小さく形成される。   Further, according to the intake device 30 of the present embodiment, the upper wall of the intake duct 15 is inclined downward from the air intake 18 toward the rear, and the intake passage of the intake duct 15 is rearward from the air intake 16. As it goes to, it is gradually formed smaller.

これにより、空気取入口１６から吸気ダクト１５内に導入された走行風の流速を、後方に向うに従って高めることができる。このため、空気取出口１８の付近において、側壁２８に沿って後方に流れる第１の走行風３１に、側壁２７の傾斜面２７Ａに沿って車両１の斜め後方に流れる第２の走行風３２を衝突させて合流できる。この結果、空気取出口１８の付近において、走行風の流速をより効果的に高めることができ、異物を異物排出口１７からより効果的に排出できる。   Thereby, the flow velocity of the traveling wind introduced into the intake duct 15 from the air intake port 16 can be increased toward the rear. Therefore, in the vicinity of the air outlet 18, the first traveling wind 31 that flows rearward along the side wall 28 is applied to the second traveling wind 32 that flows obliquely rearward of the vehicle 1 along the inclined surface 27 </ b> A of the sidewall 27. Can be joined by colliding. As a result, the flow velocity of the traveling wind can be increased more effectively in the vicinity of the air outlet 18, and foreign matter can be discharged more effectively from the foreign matter outlet 17.

また、本実施の形態の吸気装置３０によれば、吸気ダクト１５およびインレットダクト１９がゴム等の弾性部材から構成されており、一体で成形されている。これにより、空気取出口１８付近の振動(ガタツキ)によって走行風の流れを乱すことを防止でき、異物を除去した空気３３を確実にエアクリーナ２０に送り込むことができる。なお、弾性部材として、ゴムに限定されるものではない。   Further, according to the intake device 30 of the present embodiment, the intake duct 15 and the inlet duct 19 are made of an elastic member such as rubber and are integrally formed. Thereby, it is possible to prevent the flow of the traveling wind from being disturbed by vibration (rattle) in the vicinity of the air outlet 18, and the air 33 from which foreign matter has been removed can be reliably fed into the air cleaner 20. The elastic member is not limited to rubber.

本発明の実施の形態を開示したが、当業者によっては本発明の範囲を逸脱することなく変更が加えられうることは明白である。すべてのこのような修正および等価物が次の請求項に含まれることが意図されている。   While embodiments of the invention have been disclosed, it will be apparent to those skilled in the art that changes may be made without departing from the scope of the invention. All such modifications and equivalents are intended to be included in the following claims.

１...車両、６...エンジン（内燃機関）、１５...吸気ダクト、１５Ａ...吸気通路（吸気ダクトの吸気通路）、１６...空気取入口、１６Ａ...第１の空気取入口、１６Ｂ...第２の空気取入口、１７...異物排出口、１８...空気取出口、１８ａ...前端部（空気取出口の前端部）、１８ｂ...後端部（空気取出口の後端部）、１９...インレットダクト、１９Ａ...吸気通路（インレットダクトの吸気通路）、１９ａ...一端部、１９ｂ...他端部、２０...エアクリーナ、２５...上壁、２６...底壁、２７...側壁（第１の側壁）、２７Ａ...傾斜面、２７ａ...後端部（第１の側壁）、２７ｂ...前端部（第１の側壁の前端部）、２８...側壁（第２の側壁）、３０...吸気装置、９１...第１の仮想平面、９２...交差部、９３...第２の仮想平面、９４...通路幅（車両の幅方向で空気取出口から第２の側壁までの通路幅）、９５...通路幅（車両の幅方向で空気取出口の車両の前後方向前端部から第１の側壁の車両の前後方向前端部までの通路幅）   DESCRIPTION OF SYMBOLS 1 ... Vehicle, 6 ... Engine (internal combustion engine), 15 ... Intake duct, 15A ... Intake passage (intake passage of intake duct), 16 ... Air intake, 16A ... No. 1 air intake port, 16B ... second air intake port, 17 ... foreign material discharge port, 18 ... air intake port, 18a ... front end (front end of air intake port), 18b. .. Rear end portion (rear end portion of air outlet), 19 ... Inlet duct, 19A ... Intake passage (intake passage of inlet duct), 19a ... One end, 19b ... Other end , 20 ... Air cleaner, 25 ... Top wall, 26 ... Bottom wall, 27 ... Side wall (first side wall), 27A ... Inclined surface, 27a ... Rear end (first , 27b ... front end (front end of the first side wall), 28 ... side wall (second side wall), 30 ... intake device, 91 ... first imaginary plane, 92 ... intersection, 93 ... second virtual plane, 94 ... passage width (empty in width direction of vehicle) Passage width from the take-out port to the second side wall), 95 ... passage width (passage from the front end in the vehicle front-rear direction of the air take-out port to the front end in the front-rear direction of the first side wall in the vehicle width direction) width)

Claims (7)

車両の前後方向前方に開口する空気取入口と、前記空気取入口に対して前記車両の前後方向後方に設けられた異物排出口および前記空気取入口と前記異物排出口との間に設けられた空気取出口を有する吸気ダクトと、
前記空気取出口に連通する吸気通路を有し、一端部が前記吸気ダクトに取付けられたインレットダクトと、
前記インレットダクトの他端部が取付けられ、前記インレットダクトの前記吸気通路を介して導入される空気を浄化するエアクリーナとを備えた内燃機関の吸気装置であって、
前記吸気ダクトは、
前記車両の上下方向に対向する上壁および底壁と、
前記車両の幅方向一方側において前記上壁および底壁に接続され、前記空気取出口が形成される第１の側壁と、
前記車両の幅方向他方側において前記上壁および底壁に接続された第２の側壁とを含んで構成され、
前記第１の側壁は、前記空気取出口の前記車両の前後方向前端部から前記車両の前後方向前方に向かうに従って前記第２の側壁から遠ざかる傾斜面を有することを特徴とする内燃機関の吸気装置。 An air intake opening that opens forward in the front-rear direction of the vehicle, a foreign matter discharge port provided at the rear in the front-rear direction of the vehicle with respect to the air intake port, and a space between the air intake port and the foreign matter discharge port. An intake duct having an air outlet;
An inlet duct communicating with the air outlet, and an inlet duct having one end attached to the intake duct;
An intake device for an internal combustion engine, comprising an air cleaner that is attached to the other end of the inlet duct and purifies air introduced through the intake passage of the inlet duct;
The intake duct is
An upper wall and a bottom wall facing the vertical direction of the vehicle;
A first side wall connected to the upper wall and the bottom wall on one side in the width direction of the vehicle, wherein the air outlet is formed;
A second side wall connected to the upper wall and the bottom wall on the other side in the width direction of the vehicle,
The intake device for an internal combustion engine, wherein the first side wall has an inclined surface that moves away from the second side wall from the front end in the front-rear direction of the vehicle toward the front in the front-rear direction of the vehicle. . 前記インレットダクトの一端部側を、前記吸気ダクトの前記第２の側壁の延びる方向に対して直交させたことを特徴とする請求項１に記載の内燃機関の吸気装置。   The intake device for an internal combustion engine according to claim 1, wherein one end portion side of the inlet duct is orthogonal to a direction in which the second side wall of the intake duct extends. 前記吸気ダクトに対して、前記傾斜面に沿って前記車両の斜め後方に延びる第１の仮想平面と、前記第１の仮想平面と前記第２の側壁とが交差する交差部と、前記交差部を通過して車両の幅方向に横切る第２の仮想平面とを形成した場合に、前記空気取出口は、前記傾斜面の前記車両の前後方向後端部と前記第２の仮想平面との間に位置するように前記第１の側壁に形成されることを特徴とする請求項１または請求項２に記載の内燃機関の吸気装置。   A first imaginary plane extending obliquely rearward of the vehicle along the inclined surface with respect to the intake duct, an intersection where the first imaginary plane and the second side wall intersect, and the intersection And the second virtual plane that crosses the vehicle in the width direction is formed, the air outlet is between the rear end portion of the inclined surface in the vehicle front-rear direction and the second virtual plane. 3. The intake device for an internal combustion engine according to claim 1, wherein the intake device is formed on the first side wall so as to be located in the first side wall. 4. 前記空気取出口は、前記空気取出口の前記車両の前後方向後端部が前記第２の仮想平面上または前記第２の仮想平面よりも前記車両の前後方向前方に位置するように前記第１の側壁に形成されることを特徴とする請求項３に記載の内燃機関の吸気装置。   The air intake port is configured so that a rear end portion of the air intake port in the front-rear direction of the vehicle is positioned on the second virtual plane or in front of the second virtual plane in the front-rear direction of the vehicle. The intake device for an internal combustion engine according to claim 3, wherein the intake device is formed on a side wall of the internal combustion engine. 前記車両の平面視において、前記空気取入口は、前記車両の幅方向で前記空気取出口から前記第２の側壁までの通路幅と同寸法の第１の空気取入口と、前記車両の幅方向で前記空気取出口の前記車両の前後方向前端部から前記第１の側壁の前記車両の前後方向前端部までの通路幅を有する第２の空気取入口とを備え、
前記第１の空気取入口の前記車両の幅方向の寸法と前記第２の空気取入口の前記車両の幅方向の寸法とを同寸法としたことを特徴とする請求項１ないし請求項４のいずれか１項に記載の内燃機関の吸気装置。 In the plan view of the vehicle, the air intake includes a first air intake having the same size as a passage width from the air intake to the second side wall in the vehicle width direction, and the vehicle width direction. And a second air intake port having a passage width from the front end portion in the front-rear direction of the vehicle to the front end portion in the front-rear direction of the vehicle on the first side wall,
5. The size of the first air intake port in the width direction of the vehicle and the size of the second air intake port in the width direction of the vehicle are the same size. An intake device for an internal combustion engine according to any one of the preceding claims. 前記吸気ダクトの上壁が、前記空気取出口から前記車両の前後方向後方に向かって下方に傾斜し、前記吸気ダクトの吸気通路が、前記空気取入口から前記車両の前後方向後方に向かうに従って漸次小さく形成される特徴とする請求項１ないし請求項５のいずれか１項に記載の内燃機関の吸気装置。   The upper wall of the intake duct is inclined downward from the air intake toward the rear in the front-rear direction of the vehicle, and the intake passage of the intake duct is gradually increased from the air intake toward the rear in the front-rear direction of the vehicle. The intake device for an internal combustion engine according to any one of claims 1 to 5, wherein the intake device is formed small. 前記吸気ダクトおよび前記インレットダクトは、弾性部材から構成され、一体で成形されることを特徴とする請求項１ないし請求項６のいずれか１項に記載の内燃機関の吸気装置。
The intake device for an internal combustion engine according to any one of claims 1 to 6, wherein the intake duct and the inlet duct are formed of an elastic member and are integrally formed.
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