Air intake structure of vehicle

Abstract

To provide an air intake structure of a vehicle capable of preventing hot air, which is discharged from a heatsink when a cooling fan is activated, from being sucked into an internal combustion engine, and preventing an output of the internal combustion engine from decreasing.SOLUTION: An air intake structure of a vehicle 1 includes a first discharge passage part 27A and a second discharge passage part 27C through which a foreign matter contained in air taken in from a front grille 2a is discharged to an engine room 3. The first discharge passage part 27A includes a front opening 29 and a rear opening 30 located behind the front opening 29, and is disposed closer to a radiator 21 than the second discharge passage part 27C is. The first discharge passage part 27A is formed like a passage tilting in a fore-and-aft direction so that the front opening 29 faces the front of the vehicle 1 and the rear opening 30 faces the radiator 21. The second discharge passage part 27C is formed like a passage extending in the fore-and-aft direction.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to an air intake structure for a vehicle. [Background technology]

[0002] Conventionally, an intake duct for an internal combustion engine is known that prevents water from being drawn into the engine when the vehicle is driving through a deep puddle, while supplying low-temperature air to the engine during normal driving of the vehicle (see Patent Document 1).

[0003] The intake duct of this internal combustion engine has a lower duct portion that takes in air from the front of the vehicle, and an upper duct portion that is located above the lower duct portion and takes in air from the lower duct portion through a communication port and sends it to the internal combustion engine.

[0004] The lower duct has a lower exhaust port communicating with the engine compartment so as to exhaust foreign matter, such as water, that has entered the interior of the lower duct into the engine compartment. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent Publication No. 2021-127695 Summary of the Invention [Problem to be solved by the invention]

[0006] Incidentally, if a radiator equipped with a cooling fan is disposed to the side of an intake duct, when the cooling fan is operated while the vehicle is stopped, air (hot air) that has passed through the radiator and has become heated is discharged into the engine compartment.

[0007] In this case, if the hot air hits the internal combustion engine and flows forward from the internal combustion engine and enters the internal combustion engine through the opening of the intake duct on the engine compartment side, the intake temperature of the internal combustion engine may rise, causing a decrease in the output of the internal combustion engine.

[0008] For this reason, when a radiator equipped with a cooling fan is arranged to the side of the intake duct, there is still room for improvement in order to prevent the intake temperature of the internal combustion engine from increasing and to prevent a decrease in the output of the internal combustion engine.

[0009] The present invention has been made in response to the above-mentioned problems, and aims to provide an intake structure for a vehicle that can prevent hot air discharged from the radiator when the cooling fan is operated from being inhaled into the internal combustion engine, thereby preventing a decrease in the output of the internal combustion engine. [Means for solving the problem]

[0010] The present invention provides an air intake structure for a vehicle, the air intake structure comprising: a vehicle body member having an air intake opening to the front of the vehicle; an internal combustion engine arranged in an engine room behind the vehicle body member in the longitudinal direction of the vehicle; a radiator having a cooling fan and arranged between the air intake and the internal combustion engine; an air guide arranged to be aligned with the radiator in the vehicle width direction and to guide the air taken in from the air intake upward; and an air intake duct arranged above the air guide and to send the air guided by the air guide to the internal combustion engine, the air guide being configured to prevent foreign matter contained in the air taken in from being discharged from the engine duct through the air intake. the first discharge passage portion has a front opening and a rear opening provided rearward in the front-to-rear direction of the vehicle from the front opening and is disposed closer to the radiator than the second discharge passage portion, the first discharge passage portion is formed in a passage shape inclined with respect to the front-to-rear direction of the vehicle so that the front opening faces the front of the vehicle and the rear opening faces the radiator side, and the second discharge passage portion is formed in a passage shape extending in the front-to-rear direction of the vehicle. Effect of the Invention

[0011] As described above, according to the present invention, it is possible to prevent hot air discharged from the radiator by operation of the cooling fan from being drawn into the internal combustion engine, and it is possible to prevent a decrease in the output of the internal combustion engine. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a plan view of an engine room of a vehicle having an air intake structure for a vehicle according to an embodiment of the present invention. [Diagram 2] FIG. 2 is an enlarged plan view of an intake duct and its surroundings according to one embodiment of the present invention. [Diagram 3] FIG. 3 is a front view of a vehicle with a front bumper according to an embodiment of the present invention removed. [Figure 4] FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 3, illustrating the flow of hot air from the cooling fan when the vehicle is stopped. [Diagram 5] FIG. 5 is a perspective view of the front part of an engine compartment according to one embodiment of the present invention. [Figure 6] FIG. 6 is a right side view of the front part of the engine compartment according to one embodiment of the present invention. [Figure 7] FIG. 7 is a cross-sectional view taken along the line VII-VII in FIG. 3, showing air flowing through the air duct. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] An air intake structure for a vehicle according to one embodiment of the present invention is an air intake structure for a vehicle including a vehicle body member having an air intake opening to the front of the vehicle, an internal combustion engine arranged in an engine room behind the vehicle body member in the longitudinal direction of the vehicle, a radiator having a cooling fan and arranged between the air intake and the internal combustion engine, an air guide arranged to be aligned with the radiator in the vehicle width direction and guiding the air taken in from the air intake upward, and an air intake duct arranged above the air guide and sending the air guided by the air guide to the internal combustion engine, wherein the air guide is a radiator that radiates air contained in the air taken in from the air intake. The exhaust passage portion has a discharge passage portion that discharges foreign matter contained therein into the engine compartment, the discharge passage portion including a first discharge passage portion and a second discharge passage portion aligned in the vehicle width direction, the first discharge passage portion having a front opening and a rear opening portion provided rearward in the vehicle longitudinal direction from the front opening portion and positioned closer to the radiator than the second discharge passage portion, the first discharge passage portion being formed in a passage shape inclined with respect to the vehicle longitudinal direction so that the front opening portion faces toward the front of the vehicle and the rear opening portion faces toward the radiator, and the second discharge passage portion being formed in a passage shape extending in the vehicle longitudinal direction.

[0014] As a result, the vehicle intake structure of one embodiment of the present invention can prevent hot air discharged from the radiator when the cooling fan is operated from being inhaled into the internal combustion engine, thereby preventing a decrease in the output of the internal combustion engine. EXAMPLES

[0015] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the vehicle air intake structure according to the present invention will be described with reference to the drawings. 1 to 7 are diagrams showing an intake structure for a vehicle according to an embodiment of the present invention.

[0016] In Figures 1 to 7, the up, down, front, rear, left and right directions are based on the engine installed in a vehicle, the front to back direction of the vehicle is the front-to-rear direction, the side where the radiator is located is the front, and the side where the engine is located is the rear.

[0017] The left-right direction of the vehicle (vehicle width direction) is defined as the left-right direction, with the catalytic converter side defined as the left and the intake duct side defined as the right. The height direction of the engine is defined as the up-down direction, with the air cleaner side defined as the top and the side opposite the air cleaner defined as the bottom.

[0018] First, the configuration will be described. 1, a vehicle 1 is equipped with a front bumper 2, and the front bumper 2 is installed at the front part of the vehicle 1. Behind the front bumper 2, an engine room 3 is installed.

[0019] 7, a front grille 2a is opened in the front bumper 2. The front grille 2a communicates the front of the front bumper 2 with the engine room 3, and takes in air from the front of the vehicle 1 into the engine room 3. In this embodiment, the front bumper 2 constitutes a vehicle body member, and the front grille 2a constitutes an air intake.

[0020] As shown in FIGS. 1 and 3, an upper member 4 and a bumper member 5 are disposed at the rear of the front bumper 2, and the upper member 4 is disposed above and behind the bumper member 5.

[0021] 1, an engine 6 and an intake system 7 are installed in an engine room 3. The intake system 7 includes an intake duct 8, an intake hose 9, an air cleaner 10, and an intake pipe 11.

[0022] 3, the intake duct 8 is fixed to the upper member 4. The intake duct 8 has an intake port 8a opened at the front end, and takes in air taken into the engine compartment 3 from the front grille 2a through the intake port 8a.

[0023] As shown in FIG. 1, the intake hose 9 extends rearward from the intake duct 8 and connects the intake duct 8 to an air cleaner 10 .

[0024] The air cleaner 10 is disposed on top of the engine 6 and purifies the air taken in through the intake duct 8 and the intake hose 9 .

[0025] The intake pipe 11 sends the air purified by the air cleaner 10 to an intake port (not shown) of the engine 6 via an intake manifold (not shown) provided in the engine 6 .

[0026] As shown in FIG. 1, a catalytic converter 12 is provided in front of the engine 6. Exhaust gas burned in a combustion chamber (not shown) of the engine 6 is discharged from an exhaust port (not shown) of the engine 6 to the catalytic converter 12 and purified by the catalytic converter 12.

[0027] As shown in Figure 7, the front bumper 2 is formed with a front grille 2a and is configured to include a front wall 2A extending in the vertical direction, an inclined wall 2B inclined diagonally upward and rearward from the upper end of the front wall 2A, and a horizontal wall 2C extending horizontally from the rear end of the inclined wall 2B and abutting the upper surface of the intake duct 8.

[0028] A radiator 21 is disposed between the front grille 2a (that is, the front wall 2A) and the engine 6 in the front-rear direction (see FIG. 1), and the radiator 21 is disposed below the upper member 4 (see FIG. 3).

[0029] A lower member (not shown) is provided below the bumper member 5, and the radiator 21 is fixed to the upper member 4 and the lower member so as to be sandwiched between the upper member 4 and the lower member in the vertical direction. In this embodiment, the engine 6 constitutes an internal combustion engine, and the radiator 21 constitutes a heat sink.

[0030] As shown in FIGS. 1 and 4, the radiator 21 includes a radiator body 22, a cooling fan 23, and a fan shroud 24.

[0031] The radiator body 22 has an upper tank 22A provided at an upper portion, a lower tank (not shown) provided at a lower portion, and a radiator core 22B provided between the upper tank 22A and the lower tank in the vertical direction.

[0032] The radiator core 22B is configured by alternately stacking flat water tubes (not shown). The radiator core 22B cools the cooling water by exchanging heat between the cooling water flowing through the water tubes from the upper tank 22A and the outside air, and introduces the cooled cooling water into the lower tank.

[0033] The fan shroud 24 is attached to the rear of the radiator body 22. The fan shroud 24 has a cooling fan 23 and a fan motor (not shown) that drives the cooling fan 23 to rotate.

[0034] The fan shroud 24 draws air taken in from the front of the vehicle 1 through the front grille 2a into the engine compartment 3 by the rotating cooling fan 23, into the radiator core 22B. The air that has exchanged heat with the cooling water flowing through the radiator core 22B is exhausted rearward by the cooling fan 23.

[0035] In addition, a guide portion 24A is provided on the fan shroud 24. The guide portion 24A opens toward the catalytic converter 12 and the auxiliary machinery 13, and a portion of the air exhausted rearward by the cooling fan 23 is directed by the guide portion 24A toward the catalytic converter 12 and the auxiliary machinery 13. The auxiliary machinery 13 is, for example, a generator.

[0036] As shown in FIG. 3, an air guide 25 is provided between the upper member 4 and the bumper member 5 in the vertical direction, and the air guide 25 is fixed to the upper member 4 by brackets 28A (see FIG. 1) provided at both ends in the vehicle width direction and bracket 28B (see FIG. 5) provided in the center in the vehicle width direction.

[0037] The air guide 25 has a radiator-side air guide 26 and a duct-side air guide 27. The radiator-side air guide 26 faces the radiator core 22B in the front-rear direction. The radiator-side air guide 26 is formed with an air vent 26A, which passes the air taken into the engine compartment 3 through the radiator core 22B.

[0038] The duct side air guide 27 is connected to the radiator side air guide 26, and is arranged side by side with the radiator 21 in the vehicle width direction and vertically side by side with the intake duct 8. Hereinafter, the vehicle width direction will be referred to as the vehicle width direction.

[0039] 5, a lower guide wall 27a is formed on the front surface of the duct side air guide 27, and the lower guide wall 27a extends in the vertical direction. A horn mounting hole 27b is formed in the lower guide wall 27a, and a horn (not shown) that generates a warning sound is attached to the horn mounting hole 27b.

[0040] A first discharge passage portion 27A, an air outlet 27B, and a second discharge passage portion 27C are provided in the duct side air guide 27. In this embodiment, the first discharge passage portion 27A and the second discharge passage portion 27C configure the discharge passage portion.

[0041] The first discharge passage portion 27A is disposed closer to the radiator 21 than the second discharge passage portion 27C in the vehicle width direction.

[0042] As shown in FIGS. 5 and 7, the first discharge passage portion 27A has a bottom wall 27c, a left side wall 27d, a right side wall 27e, and an upper wall 27f.

[0043] The bottom wall 27c extends rearward from the lower guide wall 27a and is gently inclined upward.

[0044] The left side wall 27d extends rearward from the lower guide wall 27a and extends upward from the left end of the bottom wall 27c.

[0045] The right side wall 27e extends rearward from the lower guide wall 27a and extends upward from the right end of the bottom wall 27c.

[0046] An upper guide wall 27h is connected to the rear end of the left side wall 27d and the rear end of the right side wall 27e, and is located above and to the rear of the lower guide wall 27a. The upper guide wall 27h extends upward from an upper portion of the rear end of the left side wall 27d and an upper portion of the rear end of the right side wall 27e toward the intake duct 8 (see FIG. 7).

[0047] The front end of the bottom wall 27c, the front end of the left side wall 27d, and the front end of the right side wall 27e form a front opening 29, which faces the front of the vehicle 1. Air flowing from the front grille 2a to the engine compartment 3 is introduced from the front opening 29 into the first exhaust passage portion 27A.

[0048] As shown in FIG. 4, the left side wall 27d and the right side wall 27e face each other in the vehicle width direction, and the left side wall 27d is located on the side adjacent to the radiator 21 with respect to the right side wall 27e.

[0049] The right side wall 27e is provided with an inclined wall 27g. The inclined wall 27g is inclined from the rear end of the right side wall 27e toward the left side wall 27d. The bottom wall 27c extends to the lower end of the inclined wall 27g and is connected to the lower end of the inclined wall 27g.

[0050] The upper wall 27f faces the rear portion of the bottom wall 27c in the vertical direction, and is connected to the upper portion of the inclined wall 27g and the upper rear end portion of the left side wall 27d.

[0051] The inclined wall 27g and the rear end of the left side wall 27d form a rear opening 30, which is located rearward of the front opening 29. The rear opening 30 is inclined with respect to the front-to-rear direction so as to face the radiator 21 side.

[0052] That is, the first discharge passage portion 27A is formed in a passage shape inclined with respect to the front-rear direction so that the front opening 29 faces the front of the vehicle 1 and the rear opening 30 faces the radiator 21 side.

[0053] Foreign matter contained in the air flowing from the front grille 2a to the engine compartment 3 flows through the first exhaust passage 27A from the front opening 29, and is then exhausted from the rear opening 30 to the engine compartment 3 behind the radiator 21 (see air A2 in FIG. 7, this air A2 contains foreign matter). Here, the foreign matter is, for example, water, snow, dust, etc.

[0054] In this embodiment, the left side wall 27d constitutes one side wall, and the right side wall 27e constitutes the other side wall. The inclined wall 27g constitutes an inclined portion.

[0055] As shown in FIGS. 3 and 5, the air outlet 27B is disposed above the first exhaust passage portion 27A.

[0056] Specifically, the air outlet 27B is located above the left side wall 27d and the right side wall 27e of the first exhaust passage portion 27A, and is configured to include an upper portion of the upper guide wall 27h, and a left protruding wall 27i and a right protruding wall 27j which protrude forward from the upper portion of the upper guide wall 27h and face each other in the vehicle width direction.

[0057] The left protruding wall 27i is disposed vertically alongside the left side wall 27d, and the right protruding wall 27j is vertically continuous with the right side wall 27e.

[0058] A portion of the air taken in from the front opening 29 flows upward along the steeply sloping front portion of the bottom wall 27c and is supplied to the intake duct 8 through a gutter-shaped passage formed by the left protruding wall 27i, the upper guide wall 27h, and the right protruding wall 27j (see air A1 in Figure 7).

[0059] As shown in Figures 4 and 5, the second discharge passage portion 27C has a left side wall 27k adjacent to the right side wall 27e of the first discharge passage portion 27A in the vehicle width direction, and a right side wall 27m facing the left side wall 27k in the vehicle width direction.

[0060] In addition, the second exhaust passage portion 27C has a bottom wall 27n connecting the lower end of the left side wall 27k to the lower end of the right side wall 27m, and an upper wall 27p connecting the upper end of the left side wall 27k to the upper end of the right side wall 27m, and the upper wall 27p is located below the air outlet 27B.

[0061] The second discharge passage portion 27C has a rear wall 27q which is connected to the rear end of the left side wall 27k, the rear end of the right side wall 27m, the rear end of the bottom wall 27n, and the rear end of the top wall 27p.

[0062] An opening 27r is formed in the rear wall 27q, and a cylindrical portion 27s is provided on the rear wall 27q so as to surround the opening 27r and extend rearward from the rear wall 27q.

[0063] As shown in FIG. 5, in the second discharge passage portion 27C, a front opening 31 is formed by the front end portion of the left side wall 27k, the front end portion of the right side wall 27m, the front end portion of the bottom wall 27n, and the front end portion of the top wall 27p, and a rear opening 32 is formed by the rear end portion of the cylindrical portion 27s.

[0064] 6, the bottom wall of the cylindrical portion 27s is inclined upward from the front side to the rear side. The bottom wall of the cylindrical portion 27s is formed to be longer in the front-rear direction than the upper wall of the cylindrical portion 27s.

[0065] The second exhaust passage portion 27C is formed in a passage shape extending in the front-to-rear direction, and directs foreign matter contained in the air flowing from the front grille 2a to the engine room 3 (see air A3 in Figure 7, this air A3 contains foreign matter) from the front opening 31 to the rear opening 32, and exhausts the foreign matter contained in the air into the engine room 3 behind the radiator 21.

[0066] In this way, the first discharge passage portion 27A discharges the air A1 to the left side of the engine room 3 by the inclined wall 27g, and the second discharge passage portion 27C discharges the air A3 to the rear of the engine room 3. This allows the foreign matter to be dispersed within the engine room 3.

[0067] In the duct side air guide 27 of this embodiment, the air outlet 27B is located above the first discharge passage portion 27A and the second discharge passage portion 27C, and supplies air from which foreign matter has been removed by the first discharge passage portion 27A and the second discharge passage portion 27C to the intake duct 8.

[0068] As shown in FIG. 3, when the air guide 25 is viewed from the front of the vehicle 1, the first discharge passage portion 27A is formed in a passage shape in which the dimension in the vehicle width direction is larger than the dimension in the vertical direction, and the second discharge passage portion 27C is formed in a passage shape in which the dimension in the vertical direction is larger than the dimension in the vehicle width direction.

[0069] Specifically, the first discharge passage portion 27A is formed such that the dimensions of the bottom wall 27c and the top wall 27f in the vehicle width direction are longer than the dimensions of the left side wall 27d and the right side wall 27e in the up-down direction.

[0070] The second discharge passage portion 27C is formed in a passage shape whose vertical dimension is larger than its dimension in the vehicle width direction.

[0071] That is, the front opening 31 is formed such that the vertical dimension of the left side wall 27k and the right side wall 27m is larger than the vehicle width dimension of the bottom wall 27n and the top wall 27p. Also, the opening 27r is formed such that the vertical dimension is larger than the vehicle width dimension.

[0072] 5 and 7, the upper guide wall 27h is provided with a shielding plate 27t. The shielding plate 27t is provided in front of and above the inclined wall 27g, and protrudes forward from the upper guide wall 27h.

[0073] That is, the shielding plate 27t is provided between the first exhaust passage portion 27A and the air outlet 27B in the vertical direction, and blocks air (hot air) flowing back from the rear opening 30 of the first exhaust passage portion 27A to the air outlet 27B, as described later. The shielding plate 27t in this embodiment forms a shielding portion.

[0074] Next, the effects of the intake structure of the vehicle 1 according to this embodiment will be described. The air intake structure of a vehicle 1 of this embodiment includes a front bumper 2 having a front grille 2a that opens to the front of the vehicle 1, and an engine 6 disposed in an engine room 3 behind the front bumper 2 in the front-rear direction.

[0075] In addition, the intake structure of the vehicle 1 includes a radiator 21 having a cooling fan 23 and arranged between the front grill 2a and the engine 6, an air guide 25 arranged in line with the radiator 21 in the vehicle width direction and guiding the air taken in from the front grill 2a upward, and an intake duct 8 arranged above the air guide 25 and sending the air guided by the air guide 25 to the engine 6.

[0076] The air guide 25 has a first discharge passage portion 27A and a second discharge passage portion 27C that discharge foreign matter contained in the air taken in from the front grille 2a into the engine compartment 3 behind the radiator 21, and the first discharge passage portion 27A and the second discharge passage portion 27C are arranged side by side in the vehicle width direction.

[0077] The first exhaust passage portion 27A has a front opening 29 and a rear opening 30 provided rearward of the front opening 29, and is disposed closer to the radiator 21 than the second exhaust passage portion 27C.

[0078] The first discharge passage portion 27A is formed in a passage shape inclined with respect to the fore-and-aft direction so that the front opening 29 faces the front of the vehicle 1 and the rear opening 30 faces the radiator 21 side, and the second discharge passage portion 27C is formed in a passage shape extending in the fore-and-aft direction.

[0079] As a result, when the vehicle 1 is traveling, foreign matter contained in the air A2, A3 (see Figure 7) flowing into the engine room 3 from the front grill 2a can be discharged to the engine room 3 behind the radiator 21 by the first discharge passage portion 27A and the second discharge passage portion 27C.

[0080] Furthermore, the air A1 (see FIG. 7) from which foreign matter has been removed by the first discharge passage portion 27A can be drawn into the engine 6 through the intake duct 8 above the first discharge passage portion 27A.

[0081] Here, when the cooling fan 23 is activated due to an increase in water temperature while the vehicle 1 is stopped, the hot air A4 discharged from the guide portion 24A of the fan shroud 24 may collide with the catalytic converter 12 or the auxiliary equipment 13 and flow forward (see Figure 4), and may enter the first exhaust passage portion 27A through the rear opening 30.

[0082] At this time, since the rear opening 30 of the first exhaust passage section 27A is tilted in the front-to-rear direction so as to face the radiator 21 side, the hot air A4 that enters the first exhaust passage section 27A from the engine room 3 side rear of the radiator 21 flows diagonally forward inside the first exhaust passage section 27A, reaches the front opening 31 of the second exhaust passage section 27C, and is discharged into the engine room 3 rear of the radiator 21 through the second exhaust passage section 27C.

[0083] Therefore, hot air A4 caused by cooling fan 23 to flow toward air guide 25 can be prevented from flowing into intake duct 8 above air guide 25.

[0084] As a result, when the cooling fan 23 operates while the vehicle 1 is stopped and the hot air A4 discharged from the radiator 21 flows forward, it is possible to prevent the hot air A4 from being sucked into the engine 6, thereby preventing a decrease in the output of the engine 6.

[0085] Furthermore, according to the intake structure of the vehicle 1 of this embodiment, when the air guide 25 is viewed from the front of the vehicle 1, the first exhaust passage portion 27A is formed into a passage shape whose dimension in the vehicle width direction is larger than its dimension in the vertical direction.

[0086] This makes it easier for air flowing through the first exhaust passage portion 27A from the front and hot air flowing through the first exhaust passage portion 27A from the cooling fan 23 to flow obliquely with respect to the front-rear direction. Therefore, hot air that has entered the first exhaust passage portion 27A from the engine room 3 side behind the radiator 21 can be effectively directed to the second exhaust passage portion 27C.

[0087] Furthermore, according to the intake structure of the vehicle 1 of this embodiment, when the air guide 25 is viewed from the front of the vehicle 1, the second exhaust passage portion 27C is formed into a passage shape whose vertical dimension is larger than its dimension in the vehicle width direction.

[0088] This allows the hot air discharged from the first discharge passage portion 27A and flowing in the vehicle width direction to be efficiently captured by the second discharge passage portion 27C, and more hot air can be discharged from the second discharge passage portion 27C to the engine room 3 behind the radiator 21.

[0089] Furthermore, according to the intake structure of the vehicle 1 of this embodiment, the first exhaust passage portion 27A extends rearward from the front opening 29 and has a left side wall 27d and a right side wall 27e that face each other in the vehicle width direction, and the left side wall 27d located on the side adjacent to the radiator 21 in the vehicle width direction is formed to have a shorter length in the fore-and-aft direction than the right side wall 27e.

[0090] An inclined wall 27g is formed at the rear end of the right side wall 27e, sloping from the rear end of the right side wall 27e toward the left side wall 27d, and the rear opening 30 is formed by the inclined wall 27g and the rear end of the left side wall 27d.

[0091] This makes it easier for air and hot air to flow diagonally in the fore-and-aft direction through the inclined wall 27g, so that hot air that has entered the first exhaust passage portion 27A from the engine room 3 side behind the radiator 21 can easily flow from the first exhaust passage portion 27A to the second exhaust passage portion 27C.

[0092] Furthermore, according to the intake structure of the vehicle 1 of this embodiment, an air outlet 27B that sends air taken in from the front opening 29 to the intake duct 8 is provided above the left side wall 27d and the right side wall 27e of the first exhaust passage portion 27A, and a shielding plate 27t that shields air (hot air) flowing back from the rear opening 30 to the air outlet 27B is provided between the first exhaust passage portion 27A and the air outlet 27B in the vertical direction.

[0093] This allows the hot air that has entered the first exhaust passage 27A from the rear opening 30 to collide with the shielding plate 27t, and prevents the hot air from flowing to the air outlet 27B located above the first exhaust passage 27A. This prevents the hot air from flowing toward the intake duct 8, and more effectively prevents the output of the engine 6 from decreasing.

[0094] Although an embodiment of the invention has been disclosed, it will be apparent to one skilled in the art that modifications may be made without departing from the spirit and scope of the invention, and all such modifications and equivalents are intended to be encompassed by the following claims. [Explanation of symbols]

[0095] 1 vehicle 2 Front bumper (body part) 2a Front Grill 3. Engine Room 6 Engine (internal combustion engine) 8. Intake duct 21 Radiator 23 Cooling fan 25 Air Guide 27A First discharge passage portion (discharge passage portion) 27B Air outlet 27C Second discharge passage portion (discharge passage portion) 27d Left side wall (one side wall) 27e Right side wall (other side wall) 27g Slanted wall (slanted part) 27t shielding plate (shielding part) 29 Front opening 30 Rear opening

Claims

1. A vehicle body member having an air intake opening toward the front of the vehicle; an internal combustion engine disposed in an engine room at a rear of the vehicle body member in a front-rear direction of the vehicle; a radiator having a cooling fan and disposed between the air intake and the internal combustion engine; an air guide arranged to be aligned with the radiator in a vehicle width direction and configured to guide the air taken in through the air intake upward; an intake duct that is disposed above the air guide and sends air guided by the air guide to the internal combustion engine, the air guide has an exhaust passage portion that exhausts foreign matter contained in the air taken in through the air intake into the engine compartment, The discharge passage portion includes a first discharge passage portion and a second discharge passage portion aligned in a vehicle width direction, the first exhaust passage portion has a front opening and a rear opening provided rearward of the front opening in the front-to-rear direction of the vehicle, and is disposed closer to the radiator than the second exhaust passage portion, the first exhaust passage portion is formed in a passage shape inclined with respect to a front-to-rear direction of the vehicle such that the front opening faces the front of the vehicle and the rear opening faces the radiator side, The second exhaust passage portion is formed in a passage shape extending in a front-rear direction of the vehicle.

2. 2. The vehicle intake structure according to claim 1, wherein, when the air guide is viewed from the front of the vehicle, the first exhaust passage portion is formed into a passage shape whose dimension in the vehicle width direction is larger than its dimension in the vehicle up-down direction.

3. When the air guide is viewed from the front of the vehicle, 3. The vehicle intake structure according to claim 2, wherein the second discharge passage portion is formed in a passage shape having a dimension in a vertical direction of the vehicle larger than a dimension in a width direction of the vehicle.

4. The first discharge passage portion extends rearward from the front opening and has one side wall and the other side wall opposed to each other in a vehicle width direction, a side wall adjacent to the radiator in a vehicle width direction is defined as one side wall, the one side wall is formed to have a shorter length in a front-rear direction of the vehicle than the other side wall, a sloped portion is formed at a rear end portion of the other side wall, the sloped portion being sloped from the rear end portion of the other side wall toward the one side wall, 4. The vehicle air intake structure according to claim 1, wherein the rear opening is defined by the inclined portion and a rear end portion of the one side wall.

5. an air outlet for sending the air taken in from the front opening to the intake duct is provided above the one side wall and the other side wall; 5. The vehicle intake structure according to claim 4, further comprising a shielding portion for blocking air flowing back from the rear opening to the air outlet, the shielding portion being provided between the first exhaust passage portion and the air outlet in the vertical direction of the vehicle.

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