Intake device for vehicle

Abstract

To provide an intake device for a vehicle capable of taking low temperature air into an air intake port of an intake duct opened toward the front of the vehicle in a front part of an engine room, and preventing hot air and snow in the engine room from being sucked into the air intake port.SOLUTION: The air intake port 62 has an enlarged part side 62A enlarged upward at a position in front of an upper 62A 65 forming an upper surface of the duct body part 61, and the intake air duct 60 has an inclined wall part 66 continued to the enlarged part side wall and the upper wall 65 and inclined so that the vehicular front side is positioned above the vehicular rear side. The intake air duct 60 has a vertical wall portion 67 protruding upward at an upper portion of the 62A of the enlarged portion in the inclined wall portion 66.SELECTED DRAWING: Figure 5

Description

[Technical Field]

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

[0002] Patent Document 1 describes an air intake structure for a vehicle that includes a cover member that covers an upper portion of a space behind a vehicle body opening, and an air intake duct module that is placed on the cover member and has an upstream end that forms an air intake. This air intake structure can supply sufficient outside air to the engine side of the air intake from the vent even when the engine is operating at high speed, and to prevent high-temperature air in the engine compartment from being taken into the air intake duct module, an air vent is formed in the cover member in the opening direction of the air intake, and the opening area of ​​the air vent on the high-temperature area side of the engine compartment (the right side that is the engine side) is larger than the opening area on the side opposite to the high-temperature area side (the left side) based on the center of the air intake in the vehicle width direction along the air intake in a plan view. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-1282 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the conventional technology described in Patent Document 1, if the air intake of the intake duct opens to the front of the engine compartment, there is a risk that hot air in the engine compartment will circulate from the rear of the vehicle to the front of the vehicle and be drawn into the air intake when the vehicle is traveling at low speeds or when the vehicle is stopped. Also, when traveling on snowy roads, there is a risk that snow that has entered the engine compartment will be carried to the air intake by the air circulating from the rear of the vehicle to the front of the vehicle and be drawn into the air intake.

[0005] The present invention has been made in light of the above-mentioned circumstances, and aims to provide a vehicle intake device that can take in low-temperature air into the air intake of an intake duct that opens toward the front of the vehicle in the front part of the engine compartment, and that can prevent hot air and snow inside the engine compartment from being sucked into the air intake. [Means for solving the problem]

[0006] The present invention is an intake device for a vehicle that is arranged in an engine room provided at the front of the vehicle and includes an intake duct that sends air to the engine, the intake duct having a duct main body that is arranged near the rear side of a body member that extends in the vehicle width direction in an upper part of the front of the engine room, and an air intake that opens facing forward at the front of the duct main body, wherein the air intake has an expansion portion that expands upward at a position forward of an upper wall that forms the upper surface of the duct main body, and the intake duct has an inclined wall portion that is continuous with the expansion portion and the upper wall and is inclined so that the front side of the vehicle is located higher than the rear side of the vehicle. [Effects of the Invention]

[0007] Thus, according to the present invention, it is possible to provide an intake device for a vehicle that can take in low-temperature air into the air intake of an intake duct that opens toward the front of the vehicle at the front of the engine compartment, and that can prevent hot air or snow from inside the engine compartment from being sucked into the air intake. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a plan view of the front part of a vehicle equipped with a vehicle intake device according to an embodiment of the present invention. [Figure 2] FIG. 2 is a perspective view of an intake duct of a vehicle air intake device according to one embodiment of the present invention, viewed from the left rear and obliquely above. [Figure 3] 3 is a cross-sectional view of the intake duct of the vehicle intake device shown in FIG. 1 taken along the line III-III. [Figure 4]4 is a cross-sectional view of the intake duct of the vehicle intake device shown in FIG. 3 taken along the line IV-IV. [Figure 5] FIG. 5 is a perspective view of an intake duct of a vehicle intake device according to one embodiment of the present invention. [Figure 6] FIG. 6 is a plan view of an intake duct of a vehicle intake device according to one embodiment of the present invention. [Figure 7] FIG. 7 is a front view of an intake duct of a vehicle intake device according to one embodiment of the present invention. [Figure 8] FIG. 8 is a right side view of an intake duct of a vehicle intake device according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0009] According to one embodiment of the present invention, there is provided a vehicle intake device including an intake duct disposed in an engine compartment provided in a front portion of a vehicle and supplying air to the engine, the intake duct having a duct main body disposed near a rear side of a vehicle body member extending in the vehicle width direction above the front portion of the engine compartment, and an air intake opening facing forward at the front portion of the duct main body, the air intake opening having an enlarged portion that enlarges upward at a position forward of an upper wall that forms an upper surface of the duct main body, and the intake duct having an inclined wall portion that is continuous with the enlarged portion and the upper wall and inclined so that the front side of the vehicle is positioned higher than the rear side of the vehicle. As a result, the vehicle intake device according to the embodiment of the present invention can take in low-temperature air into the air intake of the intake duct that opens facing forward at the front portion of the engine compartment, while preventing hot air and snow from within the engine compartment from being drawn into the air intake. [Example]

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An intake device for a vehicle according to an embodiment of the present invention will now be described with reference to the drawings.

[0011] 1 to 8 are diagrams showing a vehicle intake device according to an embodiment of the present invention. In Fig. 1 to 8, the up-down, front-rear, left-right directions refer to the front-rear direction of the vehicle, the left-right direction of the vehicle (vehicle width direction) and the up-down direction of the vehicle (vehicle height direction).

[0012] First, the configuration will be described. In Fig. 1, an upper member 5 and a hood lock member 6 are provided at the front of a vehicle 1. The upper member 5 and the hood lock member 6 extend in the vehicle width direction above the front part of an engine compartment 21. The hood lock member 6 constitutes a vehicle body member in the present invention.

[0013] An engine compartment 21 surrounded by an engine hood (bonnet), dash panel, etc. (not shown) is formed behind the upper member 5 and the hood lock member 6 in the front part of the vehicle 1. The hood lock member 6 is disposed above the upper member 5 and receives the front end of the engine hood.

[0014] The engine compartment 21 contains an engine 22 and an air cleaner 29 provided above the engine 22. A transmission (not shown) is connected to the left end of the lower part of the engine 22.

[0015] The engine 22 includes a cylinder block (not shown), a cylinder head connected to the top of the cylinder block, a cylinder head cover connected to the top of the cylinder head, and an oil pan connected to the bottom of the cylinder block. The cylinder block is provided with a plurality of cylinders (not shown). Pistons (not shown) are housed in the cylinders and reciprocate vertically relative to the cylinders. The pistons are connected to a crankshaft (not shown) via connecting rods (not shown), and the reciprocating motion of the pistons is converted into rotational motion of the crankshaft via the connecting rods. The engine 22 is arranged transversely in the engine compartment 21 so that the plurality of cylinders are aligned in the width direction of the vehicle 1.

[0016] A front grille 7 is provided at the front end of the vehicle 1. The front grille 7 is disposed between the front end of the engine hood and a front bumper (not shown). The front grille 7 is provided with a grill opening 10. A running wind is introduced into the engine compartment 21 through the grill opening 10 of the front grille 7.

[0017] The vehicle 1 is equipped with a vehicle intake device 50. The vehicle intake device 50 is equipped with an intake duct 60 that takes in air introduced into the engine compartment 21 through the grill opening 10, and an intake hose 51 connected to the intake duct 60.

[0018] The intake duct 60 is disposed immediately behind the upper member 5 and the hood lock member 6 in the vehicle longitudinal direction, and forward of the engine 22. The intake duct 60 is disposed above the upper member 5 and below the hood lock member 6 in the vehicle vertical direction. The intake duct 60 is disposed toward the right end of the engine compartment 21 in the vehicle width direction.

[0019] The intake hose 51 is connected to the right end of the intake duct 60 and extends rightward and rearward. An engine-side duct 53 is connected to the rear end of the intake hose 51. The engine-side duct 53 extends rearward to the right of the engine 22. An air cleaner air intake 29A is provided at the rear and right end of the air cleaner 29.

[0020] The engine-side duct 53 is connected to the air cleaner air intake 29A at the rear end of the engine 22. A resonator 52 that suppresses intake noise is provided midway along the engine-side duct 53. The air taken into the intake duct 60 is sent to the engine 22 via the intake hose 51, the engine-side duct 53, and the air cleaner 29.

[0021] A radiator 42 is disposed on the left side of the intake duct 60 in the vehicle width direction. An upper portion of the radiator 42 is supported by the upper member 5. Therefore, the radiator 42 is disposed below the intake duct 60 in the vehicle up-down direction.

[0022] The radiator 42 cools the coolant by exchanging heat with air introduced into the engine compartment 21 from the front of the vehicle 1. An electric radiator fan (not shown) is provided on the rear surface of the radiator 42. The radiator fan operates when the temperature of the coolant reaches or exceeds a threshold value, sucking in air in front of the radiator 42 and blowing it rearward.

[0023] 2, 3, and 4, the intake duct 60 has a duct main body 61. The duct main body 61 is made of a cylindrical member extending in the vehicle width direction, and is disposed near the rear side of the hood lock member 6. An attachment portion 60A is formed at the bottom of the duct main body 61. The duct main body 61 is fixed to the top surface of the upper member 5 at the attachment portion 60A.

[0024] 3 and 4, the intake duct 60 has an air intake 62 that opens facing forward at the front of the duct main body 61. The air intake 62 opens facing forward at the front end of the left end of the duct main body 61. At the rear end of the left end of the duct main body 61, an engine room side air outlet 63 opens facing rearward. At the right end of the duct main body 61, an engine side air outlet 64 opens facing rightward. The engine side air outlet 64 is connected to the intake hose 51 (see FIG. 1).

[0025] As shown in Figures 2, 3, and 4, a back panel 8 is provided immediately behind the front grille 7. A plurality of outside air intake sections 9, 11 are formed in the back panel 8. The outside air intake sections 9, 11 introduce air that has passed through a grill opening 10 in the front grille 7 into an engine compartment 21.

[0026] In FIG. 4, air introduced into the engine compartment 21 flows rearward within the engine compartment 21 as indicated by arrow A1 and is taken in through the air intake 62 of the duct main body 61. A portion of the air taken in through the air intake 62 turns rightward as indicated by arrow C1 and is introduced into the intake hose 51 (see FIG. 1) through the engine-side air outlet 64. The remainder of the air taken in through the air intake 62 continues to flow rearward as indicated by arrow C2 and is introduced further rearward into the engine compartment 21 through the engine-side air outlet 63. If a foreign object such as snow enters the air intake 62 with the air flow, the foreign object continues to move rearward due to inertia and is discharged rearward through the engine-room-side air outlet 63. This prevents the foreign object from being introduced into the intake hose 51 (see FIG. 1) through the engine-side air outlet 64.

[0027] Here, when vehicle 1 is traveling at a low speed or is stopped, hot air that has passed through radiator 42 in engine compartment 21 as indicated by arrow B1 may circulate from the rear of the vehicle to the front of the vehicle as indicated by arrow B2 and be carried to the vicinity of intake duct 60. Furthermore, when vehicle 1 is traveling on a snowy road, snow (not shown) that has entered engine compartment 21 may be carried to the vicinity of intake duct 60 by air circulating from the rear of the vehicle to the front of the vehicle as indicated by arrow B2 within engine compartment 21. Therefore, if no measures are taken, it is conceivable that hot air or snow that has circulated from the rear of intake duct 60 will be taken in through air intake 62.

[0028] Therefore, in this embodiment, the intake duct 60 is equipped with an inclined wall portion 66, a vertical wall portion 67, a guide wall 71, etc., which will be described later, so that low-temperature air can be taken into the air intake 62 and hot air and snow in the engine compartment 21 are prevented from being drawn into the air intake 62.

[0029] 5 and 7, air intake 62 has an expanded portion 62A that expands upward at a position forward of an upper wall 65 that forms the upper surface of duct main body 61. In other words, air intake 62 has an upper edge that protrudes upward beyond upper wall 65, and the protruding portion forms expanded portion 62A. In addition, intake duct 60 has an inclined wall portion 66 that is continuous with expanded portion 62A and upper wall 65 and is inclined so that the front side of the vehicle is positioned higher than the rear side of the vehicle.

[0030] 5, 6, 7 and 8, the intake duct 60 has a vertical wall portion 67 that protrudes upward above the enlarged portion 62A of the inclined wall portion 66.

[0031] The duct main body 61 is disposed on the outer side of the engine compartment 21 in the vehicle width direction. The intake duct 60 has a guide wall 71 extending from the duct main body 61 toward the front of the vehicle on the inner side (left side) of the air intake 62 in the engine compartment 21 in the vehicle width direction. The guide wall 71 is formed in a gutter shape with an open outer side (right side) in the vehicle width direction. More specifically, the guide wall 71 is formed in a gutter shape or a U shape composed of a guide wall-side upper wall 72, a guide wall-side side wall 75, and a guide wall-side bottom wall 76.

[0032] The guide wall 71 has a guide-wall-side upper wall 72 that is continuous with the upper wall 65 of the duct main body 61. The intake duct 60 has, above the guide-wall-side upper wall 72, a guide-wall-side vertical wall portion 74 that protrudes above the vehicle and extends from the end of the vertical wall portion 67 in the vehicle width direction toward the front of the vehicle.

[0033] The guide wall 71 has a guide wall side wall 75 that extends downwardly from the end of the guide wall side upper wall 72 in the vehicle width direction. The guide wall side wall 75 and the guide wall side vertical wall portion 74 are inclined so as to extend inward of the engine compartment 21 in the vehicle width direction as they move from the air intake 62 toward the front of the vehicle.

[0034] The intake duct 60 has a guide wall side inclined wall portion 73 at the vehicle front end of the guide wall side upper wall 72, which protrudes above the guide wall side upper wall 72 and is inclined so that the front side of the vehicle is positioned higher than the rear side of the vehicle.

[0035] As described above, in this embodiment, the air intake 62 has an expansion section 62A that expands upward at a position forward of the upper wall 65 that forms the upper surface of the duct main body 61, and the intake duct 60 has an inclined wall section 66 that is continuous with the expansion section 62A and the upper wall 65 and is inclined so that the front side of the vehicle is positioned higher than the rear side of the vehicle.

[0036] As a result, the inclined wall portion 66 can expand the opening of the air intake 62 upward in the vehicle, allowing a larger amount of low-temperature air introduced into the upper region of the engine compartment 21 from the front of the vehicle to be taken into the air intake 62. Furthermore, by disposing the inclined wall portion 66, which protrudes significantly upward in the vehicle, on the rear side of the air intake 62, the air flowing from the rear of the engine compartment 21 to the front of the vehicle is redirected upward by the inclined wall portion 66 as shown by arrow B3 in FIG. 3 , and is therefore prevented from reaching the air intake 62. This prevents hot air and snow from within the engine compartment 21 from being drawn into the air intake 62. As a result, low-temperature air can be taken into the air intake 62 of the intake duct 60, which opens in the front of the engine compartment 21 facing the front of the vehicle, and also prevents hot air and snow from within the engine compartment 21 from being drawn into the air intake 62.

[0037] In this embodiment, the intake duct 60 has a vertical wall portion 67 that protrudes upward above the enlarged portion 62A of the inclined wall portion 66.

[0038] As a result, low-temperature air introduced into the upper region of engine compartment 21 from the front of the vehicle can be received by vertical wall portion 67 and introduced into air intake 62, as shown by arrow A2 in Fig. 3. Furthermore, air flowing back from the rear side to the front side of engine compartment 21 is redirected upward by vertical wall portion 67, as shown by arrow B3 in Fig. 3, and is therefore prevented from reaching air intake 62. This prevents hot air and snow from inside engine compartment 21 from being drawn into air intake 62.

[0039] In addition, in this embodiment, the duct main body 61 is positioned on the outside of the engine room 21 in the vehicle width direction, and the intake duct 60 has a guide wall 71 extending from the duct main body 61 to the front of the vehicle on the inside of the engine room 21 in the vehicle width direction relative to the air intake 62, and the guide wall 71 is formed in the shape of a gutter with its outside (right side) in the vehicle width direction open.

[0040] As a result, the guide wall 71 can prevent hot air that has traveled from the rear of the engine compartment 21 around to the duct main body 61 and the front left of the air intake 62 from being drawn into the air intake 62. This prevents the hot air in the engine compartment 21 from flowing toward the air intake 62 and being drawn into the air intake 62.

[0041] In addition, in this embodiment, the guide wall 71 has a guide wall side upper wall 72 that is continuous with the upper wall 65 of the duct main body 61, and the intake duct 60 has a guide wall side vertical wall portion 74 above the guide wall side upper wall 72 that protrudes above the vehicle and extends from the vehicle width direction end of the vertical wall portion 67 toward the front of the vehicle.

[0042] As a result, the guide wall-side vertical wall portion 74 can prevent hot air that has traveled from the rear of the engine compartment 21 around to the duct main body 61 and the front left of the air intake 62 from being drawn into the air intake 62. Therefore, it is possible to prevent hot air within the engine compartment 21 from flowing toward the air intake 62 and being drawn into the air intake 62.

[0043] In addition, in this embodiment, the guide wall 71 has a guide wall side wall 75 that extends downward from the vehicle width end of the guide wall side upper wall 72, and the guide wall side wall 75 and the guide wall side vertical wall portion 74 are inclined so as to extend inward (left side) of the engine room 21 in the vehicle width direction as they move from the air intake 62 toward the front of the vehicle.

[0044] This allows low-temperature air introduced into the upper region of engine compartment 21 from the front of the vehicle to be introduced into air intake 62 from a wider range in the vehicle width direction, as shown by arrow A4 in FIG.

[0045] In addition, in this embodiment, the intake duct 60 has a guide wall side inclined wall portion 73 at the vehicle front end of the guide wall side upper wall 72, which protrudes upward beyond the guide wall side upper wall 72 and is inclined so that the front side of the vehicle is positioned higher than the rear side of the vehicle.

[0046] This allows low-temperature air introduced into the upper region of engine compartment 21 from the front of the vehicle to be taken into air intake 62 from above by guide wall side inclined portion 73, as shown by arrow A3 in FIG.

[0047] While an embodiment of the present invention has been disclosed, it will be apparent to one skilled in the art that modifications may be made thereto without departing from the scope of the present invention, and it is intended that all such modifications and equivalents be included in the following claims. [Explanation of symbols]

[0048] 1 vehicle 6 Hood lock member (body part) 10 Grill opening 21 Engine Room 22 Engine 50 Vehicle intake system 60 Intake duct 61 Duct body 62 Air intake 62A Enlarged section 65 Upper Wall 66 Slanted wall section 67 Vertical wall section 71 Guide Wall 72 Guide wall side upper wall 73 Guide wall side inclined wall 74 Guide wall side vertical wall 75 Guide wall side wall

Claims

1. It is located in the engine compartment at the front of the vehicle and has an intake duct that sends air to the engine. the intake duct has a duct main body portion disposed in the vicinity of a rear side of a vehicle body member extending in a vehicle width direction above a front portion of the engine compartment, and an air intake opening facing forward at a front portion of the duct main body, the air intake has an expanding portion that expands upward at a position forward of an upper wall that forms an upper surface of the duct main body, The intake duct has an inclined wall portion that is continuous with the enlarged portion and the upper wall and is inclined so that the front side of the vehicle is positioned higher than the rear side of the vehicle.

2. 2. The vehicle intake device according to claim 1, wherein the intake duct has a vertical wall portion that protrudes upward above the enlarged portion of the inclined wall portion.

3. the duct main body is disposed on the outer side of the engine compartment in the vehicle width direction, the intake duct has a guide wall extending from the duct main body toward the front of the vehicle, the guide wall being located inside the air intake in the engine compartment in the vehicle width direction, 3. The vehicle intake device according to claim 2, wherein the guide wall is formed in a gutter shape with an open outer side in the vehicle width direction.

4. the guide wall has a guide wall-side upper wall that is continuous with the upper wall of the duct main body, 4. The vehicle intake device according to claim 3, wherein the intake duct has a guide wall-side vertical wall portion above the guide wall-side upper wall, the guide wall-side vertical wall portion protruding above the vehicle and extending from the vehicle width direction end of the vertical wall portion toward the front side of the vehicle.

5. the guide wall has a guide wall-side side wall extending downward from an end of the guide wall-side upper wall in the vehicle width direction, 5. The vehicle intake device according to claim 4, wherein the guide wall side wall and the guide wall side vertical wall portion are inclined so as to extend inwardly of the engine compartment in the vehicle width direction as they move from the air intake toward the front of the vehicle.

6. 5. The vehicle intake device according to claim 4, wherein the intake duct has a guide wall-side inclined wall portion at the vehicle front end of the guide wall-side upper wall, which protrudes above the guide wall-side upper wall and is inclined so that the vehicle front side is positioned higher than the vehicle rear side.

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