CN112628038A

CN112628038A - Vehicle air intake device

Info

Publication number: CN112628038A
Application number: CN202011005260.XA
Authority: CN
Inventors: 大岛正美; 中津雅之; 铃木里奈
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2019-09-24
Filing date: 2020-09-22
Publication date: 2021-04-09
Anticipated expiration: 2040-09-22
Also published as: CN112628038B; JP2021050643A; JP6933696B2

Abstract

The present invention provides a vehicle air intake device (100), comprising: a partition wall member (5) that constitutes the front end of a housing space (6) of an internal combustion engine (7); a front bumper (1) having an air inlet (1a) formed therein; an air intake unit (10) which is disposed on one side in the vehicle width direction so as to face a front space (8) between the partition wall member (5) and the front bumper (1), and which allows air introduced through the air inlet (1a) to enter; and a passage forming member (9) that forms an intake passage (9a) from the intake unit (10) to the internal combustion engine (7). The intake unit (10) is configured to have an intake port (28) facing the front space (8) and an exhaust port (35) connected to the intake passage (9a), and to form internal passages (PA1, PA2) from the intake port (28) to the exhaust port (35), the intake port (28) being provided on one side surface of the intake unit (10) in the vehicle width direction.

Description

Vehicle air intake device

Technical Field

The present invention relates to a vehicle intake device for introducing intake air into an internal combustion engine mounted on a vehicle.

Background

As such an apparatus, the following apparatus has been known: and a device for suppressing hot air in the engine compartment from being sucked into the intake path through the intake inlet by disposing the intake inlet through the opening of the front bumper in front of the heat exchanger disposed on the front surface of the engine compartment. Such a device is described in patent document 1, for example.

However, when the intake air inlet is disposed in front of the heat exchanger as in the device described in patent document 1, moisture such as rain or snow is drawn into the intake path together with air, and there is a possibility that the intake performance and the like are adversely affected.

Documents of the prior art

Patent document 1: japanese patent laid-open publication No. 2018-105267 (JP 2018-105267A).

Disclosure of Invention

An air intake device for a vehicle according to an aspect of the present invention includes: a partition wall member that constitutes a front end portion of a housing space that houses an internal combustion engine mounted on a vehicle; a front bumper disposed in front of the partition wall member and having an air inlet; an air intake unit that faces a front space between the partition wall member and the front bumper, is disposed on one side in the vehicle width direction with respect to a center in the vehicle width direction of the air inlet, and that allows air introduced through the air inlet to enter; and a passage forming member that forms an intake passage from the intake unit to the internal combustion engine. The intake unit is configured to have an intake port facing the front space and an exhaust port connected to the intake passage, and to form an internal passage from the intake port to the exhaust port. The intake port is provided on a side surface of the intake unit on one side in the vehicle width direction.

A vehicle intake device according to another aspect of the present invention includes: a partition wall member that constitutes a front end portion of a housing space that houses an internal combustion engine mounted on a vehicle; a front bumper disposed in front of the partition wall member and having an air inlet; an air intake unit disposed on one side in the vehicle width direction with respect to a center in the vehicle width direction of the air inlet port facing a front space between the partition wall member and the front bumper, and configured to allow air introduced through the air inlet port to enter; and a passage forming member that forms an intake passage from the intake unit to the internal combustion engine. The air intake unit has a lower case member having an air intake port facing the front space and having an upper surface opening on an upper surface, and an upper case member having an air exhaust port connected to the passage forming member and having a bottom surface opening on a bottom surface communicating with the upper surface opening. The lower casing member has a bottom wall, and front, rear, 1 st, and 2 nd side walls erected from a front portion, a rear portion, an end portion on one side in the vehicle width direction, and an end portion on the other side in the vehicle width direction of the bottom wall, respectively, so as to form a1 st internal passage from the air intake opening to the upper surface opening, and the air intake opening is opened on one side in the front-rear direction of the 1 st side wall. The upper housing member is configured to have an exhaust port at a rear surface, and to form a2 nd internal passage communicating with the 1 st internal passage from the bottom surface opening to the exhaust port.

Drawings

The objects, features and advantages of the present invention are further clarified by the following description of the embodiments in relation to the accompanying drawings.

Fig. 1 is a front view showing a configuration of a main portion of a vehicle having a vehicle intake device of an embodiment of the present invention.

Fig. 2 is a plan view showing a configuration of a main portion of a vehicle having a vehicle intake device according to an embodiment of the present invention.

Fig. 3 is a perspective view showing both the entire structure of an intake unit and a vehicle body frame that constitute the vehicle intake apparatus of the embodiment of the invention.

Fig. 4A is a perspective view of the intake unit in a state where a part of the vehicle body frame is omitted, as viewed obliquely from the right rear.

Fig. 4B is a perspective view of the intake unit in a state where a part of the vehicle body frame is omitted, as viewed from a direction different from that of fig. 4A.

Fig. 5A is a perspective view of the lower case constituting the intake unit of fig. 3 viewed from diagonally right ahead.

Fig. 5B is a perspective view of the lower case constituting the intake unit of fig. 3, viewed from a direction different from that of fig. 5A.

Fig. 6 is a perspective view showing a state in which the lower case of fig. 5A and 5B is attached to the vehicle body frame.

Fig. 7 is a sectional perspective view showing a state in which a rubber member is mounted on the lower case of fig. 5A, 5B.

Fig. 8 is a perspective view of the upper case constituting the intake unit of fig. 3, viewed from diagonally right ahead.

Fig. 9 is a perspective view of a single body of a rubber member mounted on the upper case of fig. 8.

Fig. 10 is a sectional view showing a state in which the rubber member of fig. 9 is assembled to the intake unit of fig. 3.

Fig. 11 is a plan view of the intake unit of fig. 3.

Fig. 12 is a sectional view showing a state in which the rubber member of fig. 7 is assembled to the intake unit of fig. 3.

Fig. 13 is a diagram schematically showing the flow of air using the vehicle air intake apparatus of the embodiment of the invention.

Detailed Description

Embodiments of the present invention will be described below with reference to fig. 1 to 13. A vehicle intake device according to an embodiment of the present invention is a device that constitutes an intake path through which air (intake air) taken into an internal combustion engine mounted on a vehicle flows. Fig. 1 is a front view (view viewed from the front of the vehicle) showing the configuration of a main part of a vehicle having a vehicle intake device according to an embodiment of the present invention, and fig. 2 is a plan view (view viewed from above the vehicle). For convenience, the front-rear direction (longitudinal direction), the left-right direction (width direction), and the up-down direction (height direction) of the vehicle are defined as shown in the drawing, and the structure of each portion will be described according to the definitions.

As shown in fig. 1 and 2, a front bumper 1 is disposed at the forefront of the vehicle, and the front bumper 1 is bilaterally symmetrical about an axis line CL1 at the center in the lateral direction and is smoothly formed into a substantially arc shape (convex curved surface shape) from the center in the lateral direction to both ends in the lateral direction. Lamp bodies 2 for illuminating the front of the vehicle are disposed above the left and right end portions of the front bumper 1, respectively. A pair of upper and lower air introduction ports 1a extending in the left-right direction are opened in the left-right direction center portion of the front bumper 1 below the lamp body 2.

Although not shown in detail, as shown in fig. 1, the heat exchanger 3 is disposed to face the air inlet 1a at the rear of the center portion in the left-right direction of the front bumper 1. The heat exchanger 3 is a radiator that cools engine cooling water by cooling air introduced through the air inlet 1a, a condenser that cools air-conditioning refrigerant, and the like. Cover members 4 are disposed on both left and right sides of the heat exchanger 3, respectively, facing both left and right end portions of the air inlet 1 a. The cover member 4 is provided to block a view from the front of the vehicle to the engine compartment through the air inlet port 1a, and the provision of the cover member 4 can prevent the aesthetic appearance of the vehicle from being spoiled when viewed from the front.

As shown in fig. 2, a front bulkhead 5 is provided behind the front bumper 1. The dash panel 5 is formed of a frame member extending in the left-right direction and is located at the front end of the engine compartment 6. That is, the front bulkhead 5 constitutes a bulkhead member that partitions the engine compartment 6, and the engine 7 as an internal combustion engine is disposed in the engine compartment 6 behind the front bulkhead 5. The engine 7 is, for example, a spark ignition type gasoline engine. The engine 7 may be a diesel engine or an ethanol engine.

An intake unit 10 is provided at the rear of the front bumper 1 facing a space 8 (referred to as a front space) extending in the up-down-left-right direction between the front bumper 1 and the front bulkhead 5. As shown in fig. 1 and 2, the intake unit 10 is disposed above the air inlet 1a of the front bumper 1, above the left cover member 4, and to the left of the axis CL1, more specifically, in the vicinity of the lamp body 2. Gaps are provided between the rear surface of the cover member 4 and the front surface of the front bulkhead 5, and between the upper surface of the cover member 4 and the bottom surface of the intake unit 10, respectively. A part of the air flowing into the front space 8 through the air introduction port 1a enters the air intake unit 10 through those gaps.

As shown in fig. 2, the intake unit 10 is connected to one end of a passage forming member 9 (a pipe or the like) constituting an intake passage 9a, and the other end of the passage forming member 9 is connected to the engine 7. Thereby, the air having entered the intake unit 10 is drawn into the engine 7 via the intake passage 9 a. Although not shown, an air cleaner for removing dust and the like in the intake air, a throttle valve for adjusting the intake air amount, an intake manifold for distributing the intake air to each cylinder of the engine 7, and the like are disposed in this order from the upstream side of the intake passage 9a to the middle of the intake passage 9 a.

In the configuration described above, the vehicle intake device 100 of the present embodiment is mainly configured by the front bumper 1 having the air inlet 1a, the front bulkhead 5 forming the front end portion of the engine compartment 6, the intake unit 10 disposed on the left side of the axis line CL1 facing the front space 8 between the front bumper 1 and the front bulkhead 5, and the passage forming member 9 forming the intake passage 9a from the intake unit 10 to the engine 7. By disposing the intake unit 10 on the left side of the axis line CL1 in the front space 8 facing the front of the engine compartment 6 in this manner, air at a relatively low temperature can be taken in. Therefore, the intake air temperature decreases, the mass per unit volume of intake air increases, and the efficiency of the engine 7 can be improved.

On the other hand, when the air intake unit 10 is disposed in the front space 8 behind the front bumper 1 as described above, there is a possibility that moisture flowing into the front space 8 through the air inlet 1a may be sucked from the air intake unit 10 during rain or snow traveling. When moisture is sucked from the intake unit 10, the moisture may reach the intake passage 9a, which may adversely affect the intake performance. Therefore, in order to suppress the moisture from being sucked into the intake unit 10 in this way, the intake unit 10 is configured as follows in the present embodiment.

Fig. 3, 4A, 4B are perspective views each showing the overall structure of the air intake unit 10. In the drawing, for convenience, the front bulkhead 5, which is a component other than the intake unit 10, the front header 51 extending in the left-right direction in front of the front bulkhead 5, and the plurality of connecting frames 52 extending forward from the upper end of the front bulkhead 5 and supporting the front header 51 in the left-right direction are shown by two-dot chain lines, respectively. As shown in fig. 3, the front bulkhead 5 and the linking frame 52 and the front header 51 and the linking frame 52 are fastened together with, for example, bolts. Fig. 3 also shows a pillar 53 extending downward from the left end of the front bulkhead 5. In fig. 4A and 4B, illustration of the front header 51, the connecting frame 52, and the support column 53 is omitted.

The front bulkhead 5, the front header 51, the connecting frame 52, and the pillars 53 are all structural bodies (reinforcements) of the vehicle, and constitute a vehicle body frame 50. As shown in fig. 2, the front header 51 extends in the left-right direction along the front bumper 1, forming a front space 8 between the front header 51 and the front bulkhead 5.

As shown in fig. 3, 4A, and 4B, the intake unit 10 includes a lower case 20 and an upper case 30 disposed above the lower case 20. As shown in fig. 3, the lower case 20 faces the front surface 5a of the front bulkhead 5 and is disposed below the front header 51 and the coupling frame 52. The upper case 30 is disposed above the front bulkhead 5, the front header 51, and the connecting frame 52 so as to straddle the front space 8 in the front-rear direction. The lower case 20 and the upper case 30 are formed by resin molding using, for example, a heat-resistant resin as a constituent material.

Fig. 5A and 5B are perspective views each showing a structure of a single body of the lower case 20. Fig. 6 is a perspective view showing an attached state of the lower case 20, that is, a state in which the upper case 30 is detached from fig. 1. In fig. 6, the coupling frames 52 positioned on the left and right sides of the lower case 20 are shown by

reference numerals

521 and 522, respectively. The dash panel 5, the roof rail 51, and the connecting

frames

521 and 522 form the 1 st to 4 th frames of the vehicle body frame 50, respectively.

As shown in fig. 5A and 5B, the lower case 20 includes a bottom wall 21, which is substantially rectangular in plan view, a front wall 22, a rear wall 23, a left wall 24, and a right wall 25, each of which is formed in a plate shape, the front wall 22 standing upward from a front edge of the bottom wall 21, the rear wall 23 standing upward from a rear edge of the bottom wall 21, the left wall 24 standing upward from a left edge of the bottom wall 21, and the right wall 25 standing upward from a right edge of the bottom wall 21. The lower case 20 has a substantially box shape with an open upper surface as a whole.

A part of the upper surface of the lower case 20, i.e., the front side, is covered by an upper wall 26 connected to the upper end of the front wall 22 and the upper end of the front side portion of the right wall 25. The upper wall 26 extends in the horizontal direction substantially parallel to the bottom wall 21, and an upper surface opening 27 of the lower case 20 is formed behind the upper wall 26. The upper wall 26 has through holes 26a at two positions on the left and right. As shown in fig. 6, the upper wall 26 is fixed to the bottom surface of the front header 51 by clips 11 inserted into the through holes 26 a. As shown in fig. 5A, the rear wall 23 has through holes 23a at two positions on the left and right. As shown in fig. 6, the rear wall 23 is fixed to the front surface 5a of the front bulkhead 5 by clips 12 inserted into the through holes 23 a.

As shown in fig. 5A, the left wall 24 is erected rearward of the front wall 22 by a predetermined length. Therefore, as shown in fig. 4B, a substantially rectangular opening 28 is formed in the lower case 20 in front of the front edge 24a of the left wall 24 when viewed from the left side. The opening 28 constitutes an intake port of the intake unit 10. Further, the front and left end 21a of the bottom wall 21 connected to the intake port 28 is formed in a downward concave shape, so that a predetermined opening area can be secured.

As shown in fig. 5A, a concave notch 23b is provided in the upper surface of the left end of the rear wall 23, and the left ends 22a and 26b of the front wall 22 and the upper wall 26 are cut off halfway without extending to the left edge of the bottom wall 21. As a result, as shown in fig. 6, when the lower case 20 is attached to the vehicle body frame 50, the coupling frame 521 extending in the front-rear direction above the left side of the lower case 20 can be prevented from interfering with the lower case 20. In the state where lower case 20 is attached, the upper edge of left wall 24 is positioned above the bottom surface of coupling frame 521 on the left side of coupling frame 521. Therefore, although not shown, when the lower case 20 is viewed from the left, the upper end of the left wall 24 overlaps the left side surface of the connecting frame 521.

The right wall 25 extends along the left side surface of the coupling frame 522 on the right side of the lower case 20 in a curved shape in the front-rear direction. As shown in fig. 5A, the front portion 26c of the upper wall 26 is formed lower than the portion where the through hole 26a is provided, i.e., in a concave shape. Further, a plate portion 26d is provided at the front portion of the right wall 25 so as to horizontally protrude rightward below the upper wall 26. Thus, as shown in fig. 6, when the lower case 20 is attached to the vehicle body frame 50, the front header 51 extending in the left-right direction above the front side of the lower case 20 and the coupling frame 522 extending in the front-rear direction above the plate portion 26d on the right side of the right wall 25 can be prevented from interfering with the lower case 20.

As shown in fig. 5A and 6, the right wall 25 has a protrusion 250 protruding upward from the connecting frame 522 behind the front roof rail 51. As shown in fig. 5B, three through holes 250a are opened in the front-rear direction of the protruding portion 250, and the elastic rubber member 13 made of rubber or rubber is attached to the protruding portion 250 through the through holes 250a over the entire front-rear direction area of the protruding portion 250.

Fig. 7 is a sectional view showing the mounted state of the rubber member 13. As shown in fig. 7, the rubber member 13 has a base portion 131 extending from the left side to the right side over the upper end of the projecting portion 250 and clips 132 projecting rightward from the lower end portion of the base portion 131. The clips 132 are provided at three positions in the front-rear direction corresponding to the positions of the through holes 250a, and the rubber member 13 is attached to the protrusion 250 by pressing the clips 132 into the through holes 250a from the left side of the protrusion 250. In a state where the clip 132 is pressed, the base portion 131 abuts against the left surface of the projection portion 250. On the other hand, on the right side of the protruding portion 250, the base portion 131 extends obliquely downward rightward, and the right lower end portion 131a of the base portion 131 extends substantially horizontally rightward.

Fig. 8 is a perspective view of the upper case 30 alone (a view seen from obliquely above). Upper case 30 is attached to body frame 50 after lower case 20 is attached to body frame 50. That is, the upper casing 30 is mounted to the upper surface of the front diaphragm 5 and the upper surface of the front header 51 after the lower casing 20 is mounted to the front surface 5a of the front diaphragm 5 and the bottom surface of the front header 51 (fig. 6).

As shown in fig. 8, the upper case 30 includes a plate portion 31 having a substantially rectangular shape in plan view, and a tube portion 32 extending rearward from a right side and a front-rear direction center portion of the plate portion 31. The tube portion 32 is formed in a substantially rectangular shape in cross section at a front end portion connected to the plate portion 31, and is formed in a cylindrical shape as it goes toward the rear. The tube 32 protrudes rearward from the rear end of the plate 31, and has a substantially cylindrical shape in the protruding region. Further, the tube portion 32 is not only bulged from the upper surface of the plate portion 31, but also bulged from the bottom surface of the plate portion 31. The upper case 30 can be formed by welding a component having an upwardly bulging portion (a part of the pipe portion 32), which is, for example, a component molded integrally with the plate portion 31, and a component having a downwardly bulging portion.

A bottom opening 33, which is a substantially rectangular opening, is formed in the bottom surface of the upper case 30 at the connection between the plate portion 31 and the tube portion 32. A passage 34 is formed in the front-rear direction inside the pipe portion 32, and a front end portion of the passage 34 communicates with the bottom surface opening 33. An opening 35 at the rear end of the duct 34, that is, the rear end of the pipe portion 32, forms an exhaust port of the intake unit 10, and the front end of the duct forming member 9 (fig. 2) is connected to the exhaust port 35.

The plate portion 31 has through holes 31a at two positions in the left-right direction at its front end. The right through hole 31a is located at the right end of the plate 31, and the left through hole 31a is located at the substantially central portion of the plate 31 in the left-right direction. As shown in fig. 6, the front header 51 is provided with through holes 51a on both left and right sides of the clip 11. As shown in fig. 3, the clips 36 that penetrate the through holes 31a of the plate portion 31 engage with these through holes 51 a. Whereby the front end portion of the upper housing 30 is fixed to the upper surface of the front header 51.

As shown in fig. 8, through holes 31b are opened at three positions in the left-right direction at the rear end portion of the plate portion 31. The right and center through holes 31b are located on both left and right sides of the tube portion 32, and the left through hole 31b is located at the left end of the plate portion 31. As shown in fig. 6, three through holes 5b are formed in the upper surface of the front partition 5 in the left-right direction. As shown in fig. 3, the clips 37 penetrating the through holes 31b of the plate portion 31 are engaged with the through holes 5 b. Whereby the rear end portion of the upper case 30 is fixed to the upper surface of the front bulkhead 5.

As shown in fig. 8, the rubber member 14 having elasticity and made of rubber or rubber is attached to the bottom surface of the upper case 30 in the left-right direction across the bottom surface of the pipe portion 32. Fig. 9 is a perspective view of the rubber member 14 as a single body as viewed obliquely from the rear, and fig. 10 is a sectional view of a main part of the upper case 30 showing an attached state of the rubber member 14. Fig. 11 is a plan view showing a state in which the intake unit 10 is attached to the vehicle body frame 50.

As shown in fig. 8, a projecting portion 38 for mounting the rubber member 14 projects downward from the bottom surface of the plate portion 31 of the upper case 30. The protruding portion 38 extends in the left-right direction across the tube portion 32. The protrusion 38 has through holes 38a at one position of the right protrusion 38 and at two positions on the left and right of the left protrusion 38. As shown in fig. 9 and 10, the rubber member 14 includes a base portion 141 extending in the left-right direction and three clips 142 (only one is shown) protruding forward from three positions on the front surface of the base portion 141 in the left-right direction corresponding to the positions of the through holes 38 a.

The base portion 141 has a length in the left-right direction substantially equal to the length from the left end to the right end of the protruding portion 38, and a concave notch 143 corresponding to the shape of the bottom surface of the pipe portion 32 is provided at the upper edge of the base portion 141 in order to avoid interference with the bottom surface of the pipe portion 32. As shown in fig. 10, the clip 142 is press-fitted into the through hole 38a from behind the protrusion 38, whereby the rubber member 14 is attached to the protrusion 38. In a state where the clip 142 is pressed, the base portion 141 abuts against the rear surface of the projection 38.

The lower end portion of the base portion 141 is bent rearward, and when the upper case 30 is fixed to the vehicle body frame 50, the lower end portion of the base portion 141 is pressed against the upper surface of the front bulkhead 5. Thereby, the gap between the upper surface of the front bulkhead 5 and the bottom surface of the upper case 30 is sealed by the rubber member 14. That is, since the upper surface of the front bulkhead 5 is formed in a concave-convex shape, a gap is easily generated between the front bulkhead 5 and the upper case 30, but the gap can be sealed by providing the rubber member 14.

The sealing area by the rubber member 14 at this time is a broken line area AR1 in fig. 11, and extends over the entire rear wall 23 of the lower case 20 in the left-right direction (fig. 6). This prevents air and moisture from being drawn into the intake unit 10 from behind the rubber member 14 as indicated by arrow a1 in fig. 10. In this case, the pressure is applied to the rubber member 14 in a direction in which the lower end portion of the rubber member 14 is pressed against the upper surface of the front bulkhead 5 by the flow of air, and therefore, the sealing performance is good.

As shown in fig. 8, a projection 39 projects downward from the right end of the bottom surface of the upper case 30. The protruding portion 39 extends in the front-rear direction along the left side surface of the coupling frame 522 of fig. 6, corresponding to the position of the rubber member 13 of the lower case 20. Fig. 12 is a sectional view showing a positional relationship between the protruding portion 39 and the rubber member 13 in a state where the lower case 20 and the upper case 30 are attached to the vehicle body frame 50.

As shown in fig. 12, the lower end portion 131a of the rubber member 13 extending rightward beyond the upper end of the protruding portion 250 of the right wall 25 of the lower case 20 is pressed from above by the protruding portion 39 of the bottom surface of the upper case 30. Whereby the gap between the right wall 25 of the lower case 20 and the upper case 30 is sealed by the rubber member 13.

The sealing area by the rubber member 13 at this time is a broken line area AR2 in fig. 11, and extends over the entire space between the front bulkhead 5 and the front header rail 51 in the front-rear direction (fig. 6). This prevents air and moisture from flowing from the right of the rubber member 13 and being drawn into the intake unit 10 as indicated by an arrow a2 in fig. 12. In this case, the pressure is applied to the rubber member 13 in a direction in which the lower end 131a of the rubber member 13 is pressed against the protruding portion 39 by the flow of air, and therefore, the sealing performance is good.

Fig. 13 is a plan view schematically showing the flow of intake air of the vehicle intake device 100 of the present embodiment. A1 st internal passage PA1 is formed inside the intake unit 10 from the intake port 28 of the right surface of the lower housing 20 to the upper surface opening 27. And a2 nd internal passage PA2 communicating with the 1 st internal passage PA1 is formed from the bottom surface opening 33 of the upper case 30 to the exhaust port 35 of the rear surface.

When the engine 7 is operated, air enters the front space 8 between the front bumper 1 and the front bulkhead 5 through the air inlet 1a of the front bumper 1 as indicated by an arrow B1 in fig. 13. The intake air flows leftward along the cover member 4 functioning as an air guide plate. That is, the air flows in the rear direction of the hood member 4 as indicated by an arrow B11, or in the left direction through the upper direction of the hood member 4 as indicated by an arrow B21.

The right surface of the air intake unit 10 is closed by the right wall 25 of the lower case 20, and thus the air of arrows B11, B21 is prevented from flowing into the air intake unit 10 from the right surface. Further, since the bottom surface, the front surface, and the rear surface of the intake unit 10 are closed by the bottom wall 21, the front wall 22, and the rear wall 23 of the lower case 20, air flowing in the directions indicated by arrows B11 and B21 can be prevented from flowing into the intake unit 10 from the bottom surface, the front surface, and the rear surface. Therefore, the air flowing in the direction indicated by arrows B11, B21 passes behind the cover member 4 and below the intake unit 10 as indicated by arrow B12, or passes above the cover member 4 and below the intake unit 10 as indicated by arrow B22, and is introduced into the space 8a between the intake unit 10 and the lamp body 2 on the left side thereof.

The left surface of the air intake unit 10 is closed on the rear side by a left wall 24. Therefore, the air in the space 8a is prevented from flowing into the intake unit 10 from the rear side of the left surface of the intake unit 10 as indicated by arrow B13. Therefore, the air in the space 8a mainly flows into the intake unit 10 via the intake port 28 on the front side of the right surface of the intake unit 10. By thus sucking air only from the intake port 28, which is a predetermined opening, management of the intake air amount becomes easy. The air flowing into the intake unit 10 flows toward the intake passage 9a through the 1 st internal passage PA1 and the 2 nd internal passage PA2 as indicated by arrows.

In rain, snow, or the like, when moisture such as rain water, snow, or the like flows into the front space 8 through the air inlet 1a of the front bumper 1, the inflowing moisture may be scattered in the front space 8, for example, or may flow leftward in the front space 8 along the flow of air. However, in the present embodiment, the air intake 28 of the air intake unit 10 is provided on the opposite left and right sides of the air introduction port 1a, and the right surface, the bottom surface, the front surface, and the rear surface of the air intake unit 10 are closed. Therefore, the moisture flowing in the front space 8 can be prevented from flowing in from the air inlet 28.

In particular, the cover member 4 is disposed below the intake port 28, and the space below the intake port 28 is narrower than the space below the left wall 24. Therefore, the moisture is less likely to pass through the space below the intake port 28, and the moisture can be prevented from flowing into the intake unit 10 satisfactorily. Further, since the upper end of the left wall 24 is positioned above the bottom surface of the connecting frame 521, it is possible to prevent moisture from flowing into the intake unit 10 from above the left wall 24 without passing through the intake port 28. As shown in fig. 13, the rear end portion of the cover member 4 below the lower case 20 is located below the intake port 28. In other words, the rear end portion of the intake port 28 is located rearward of the rear end portion of the cover member 4 below the lower case 20. Therefore, only the air in the front space 8 can be sucked in from the air inlet 28 along the field.

A rubber member 13 is provided at a right portion (right surface) of the intake unit 10 in an area AR2 (fig. 11) in the front-rear direction of the lower case 20 in such a manner as to block a gap between the lower case 20 and the upper case 30. Although the moisture is likely to flow in the left direction in the front space 8, the sealing by the rubber member 13 can reliably prevent the moisture from flowing in the left direction into the intake unit 10 from the right surface of the intake unit 10.

The rubber member 14 is provided at a rear portion (rear surface) of the intake unit 10 in an area AR1 (fig. 11) in the left-right direction of the lower case 20 in such a manner as to close a gap between the lower case 20 and the upper case 30. Accordingly, for example, in a situation where rainwater or the like collides with some parts and is reflected forward in the front space 8, it is possible to reliably prevent moisture from flowing into the intake unit 10 from the rear through the upper side of the front bulkhead 5. Further, since the rear surface of the intake unit 10 faces the engine compartment 6 (fig. 2), the air temperature behind the intake unit 10 is relatively high, but the sealing by the rubber member 14 can suppress the intake of high-temperature air.

In the present embodiment, no rubber member is provided between the lower case 20 and the upper case 30 on the front surface of the intake unit 10. However, for example, when the degree of unevenness of the upper surface and the bottom surface of the front header 51 is large and the gap between the lower casing 20 and the upper casing 30 is large, a rubber member may be provided similarly to the right surface and the rear surface. However, since the cover member 4 is provided below the front wall 22 of the lower case 20, a space below the front wall 22 is narrow, and since the front bumper 1 and the like are provided on the front surface of the front wall 22, a space in front of the front wall 22 is also narrow. Therefore, even without the rubber member, the possibility of moisture flowing in from the front surface of the air intake unit 10 is small.

The present embodiment can provide the following effects.

(1) The vehicle intake device 100 includes: a front bulkhead 5 that constitutes a front end portion of an engine compartment 6 that houses an engine 7 mounted on a vehicle; a front bumper 1 disposed in front of the front partition 5 and having an air inlet 1 a; an intake unit 10 that is disposed on the left side of an axis line CL1 at the center in the vehicle width direction of the air introduction port 1a facing the front space 8 between the front bulkhead 5 and the front bumper 1, and that allows air introduced through the air introduction port 1a to enter; and a passage forming member 9 that forms an intake passage 9a (fig. 1, 2) from the intake unit 10 to the engine 7. The air intake unit 10 has a lower case 20 and an upper case 30, wherein the lower case 20 has an air intake port 28 facing the front space 8 and has an upper surface opening 27 on an upper surface, and the upper case 30 has an air exhaust port 35 connected to the passage forming member 9 and has a bottom surface opening 33 communicating with the upper surface opening 27 on a bottom surface (fig. 5A, 8). The lower case 20 has a bottom wall 21, and a front wall 22, a rear wall 23, a left wall 24, and a right wall 25 that are erected from the front, rear, left, and right portions of the bottom wall 21, respectively, so as to form a1 st internal passage PA1 from the air inlet 28 to the upper surface opening 27, and the air inlet 28 is provided on the front side of the left wall 24 (fig. 5A, 5B, and 13). The upper case 30 has an exhaust port 35 on the rear surface, and a2 nd internal passage PA2 (fig. 8 and 13) communicating with the 1 st internal passage PA1 is formed from the bottom surface opening 33 to the exhaust port 35.

By forming the air intake opening 28 on the front side of the left wall 24 on the left-right opposite side to the vehicle width direction center (axis CL1) side of the air introduction opening 1a in this manner, it is possible to prevent moisture such as rainwater and snow that flows in from the air introduction opening 1a during traveling from entering the intake unit 10 via the air intake opening 28. This can prevent adverse effects on the intake performance of the engine 7.

(2) The intake unit 10 further includes a rubber member 13, and the rubber member 13 is interposed between the right wall 25 (the protruding portion 250) of the lower case 20 and the upper case 30 (fig. 5B and 12). This can reliably prevent the moisture flowing in through the right air inlet 1a of the air intake unit 10 from flowing into the air intake unit 10.

(3) The lower case 20 has a protruding portion 250 that supports the rubber member 13, the rubber member 13 extends rightward through the upper portion of the right wall 25 (protruding portion 250) of the lower case 20, and the upper case 30 has a protruding portion 39 (fig. 12) on the right side of the right wall 25 that protrudes so as to press the rubber member 13 downward. As a result, the air flows leftward in the front space 8 (arrow a2 in fig. 12), and the rubber member 13 is pressed toward the protruding portion 39, so that excellent sealing performance can be ensured.

(4) The rear end of the upper case 30 has a through hole 31b fixed to the upper surface of the front bulkhead 5, and a rubber member 14 (fig. 8 and 10) for sealing a gap with the upper surface of the front bulkhead 5 is provided at the bottom of the upper case 30 on the rear end side. This can reliably prevent rainwater and the like flowing from the air inlet 1a from reflecting in the front space 8 and flowing into the air intake unit 10.

(5) The vehicle intake device 100 further includes a cover member 4, and the cover member 4 is provided in the front space 8 so as to extend in the vehicle width direction from the rear of the air inlet 1a to the lower side of the lower case 20 (fig. 1). Intake port 28 is provided rearward of a rear end portion of the upper surface of cover member 4 located below lower case 20 from a front end portion of lower case 20 (fig. 13). This reduces the area of the space around the lower case 20 toward the air inlet 28, and moisture such as rainwater flowing in from the air inlet 1a is less likely to reach the air inlet 28, and moisture can be satisfactorily prevented from entering from the air inlet 28.

The above embodiment can be modified into various modes. The following describes modifications. In the above embodiment, the front wall 22, the rear wall 23, the left wall 24 (1 st side wall), and the right wall 25 (2 nd side wall) are erected from the bottom wall 21 of the lower case 20, and the intake port 28 is opened on the front side of the left wall 24, but the intake port may be opened on the rear side of the 1 st side wall, and the configuration of the lower case member is not limited to the above. That is, one side in the front-rear direction where the air intake port is provided and the other side in the front-rear direction where the air intake port is not provided and closed may be either one of the front side and the rear side. It is also possible to arrange the air intake unit on the right side of the vehicle instead of on the left side of the vehicle, in which case the 1 st side wall where the air intake is opened is the right wall. In the above embodiment, the exhaust port 35 is opened in the rear surface of the upper case 30 having the plate portion 31 and the pipe portion 32, but the configuration of the upper case member is not limited to this. For example, the front wall, the rear wall, and the left and right side walls may be provided on the upper case member from the upper wall to the lower side, instead of the lower case member, and the intake port may be opened in the side wall on the left and right opposite sides with respect to the vehicle width direction center side of the intake port.

In the above embodiment, the intake unit 10 is configured by the lower casing 20 and the upper casing 30 divided into two in the upper and lower direction, but the configuration of the intake unit may be any configuration as long as it has an intake port facing the front space 8 and an exhaust port connected to the intake passage 9a and forms an internal passage from the intake port to the exhaust port, and the intake port is provided on the side surface of one side in the vehicle width direction of the intake unit (the side opposite to the axis CL1 of the vehicle center). The intake unit may be constituted by, for example, three or more housing members. In the case where the intake unit is constituted by a pair of upper and lower case members, i.e., a lower case member having an upper surface opening on an upper surface and an upper case member having a bottom surface opening on a bottom surface communicating with the upper surface opening, the shapes of the lower case member and the upper case member may be any as long as the lower case member is formed in such a manner that the intake port is provided on one side in the front-rear direction of the side surface on one side in the vehicle width direction and the upper case member is formed in such a manner that the exhaust port is provided on a rear surface.

In the above embodiment, the front bulkhead 5 is used as a bulkhead member that constitutes the front end portion of the engine compartment 6 that is a housing space for the internal combustion engine, but the configuration of the bulkhead member is not limited to this. In the above embodiment, the gap between the right wall 25 of the lower case 20 and the upper case 30 is sealed by the rubber member 13, but the configuration of the sealing member interposed between the side wall (2 nd side wall) of the lower case member and the upper case member is not limited to the above. In the above embodiment, the rubber member 13 is supported by the through hole 250a of the protruding portion 250 of the lower case 20, but the configuration of the supporting portion of the sealing member is not limited thereto. In the above embodiment, the through hole 31b for fixing the upper case 30 to the upper surface of the front bulkhead 5 is provided at the rear end portion of the upper case 30, but the configuration of the fixing portion is not limited to this. In the above embodiment, the rubber member 14 for sealing the gap with the upper surface of the front bulkhead 5 is provided at the bottom of the rear end portion of the upper case 30, but the configuration of the sealing member is not limited to the above.

In the above embodiment, the cover member 4 extending in the vehicle width direction from the rear of the air inlet 1a to the lower side of the lower case 20 is provided in the front space 8 behind the front bumper 1, and the air flows along the cover member 4 in the rear and upper directions of the cover member 4, but the configuration of the cover member (air guide member) is not limited to this. The cover member may also be configured, for example, in such a manner that air flows in the left-right direction or the up-down direction along the front surface of the cover member. The cover member may also be omitted.

One or more of the above embodiments and modifications may be arbitrarily combined, or modifications may be combined with each other.

The present invention can prevent moisture such as rainwater flowing in through the air inlet from flowing into the air intake unit, and prevent adverse effects on the air intake performance due to the inflow of moisture.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the disclosure of the following claims.

Claims

1. A vehicle air intake device (100) is provided with a partition wall member (5), a front bumper (1), an air intake unit (10), and a passage forming member (9), wherein the partition wall member (5) constitutes a front end portion of a housing space (6) for housing an internal combustion engine (7) mounted on a vehicle; the front bumper (1) is arranged in front of the partition wall member (5) and is provided with an air inlet (1 a); the air intake unit (10) is disposed on the one side in the vehicle width direction with respect to the center in the vehicle width direction of the air inlet (1a) facing the front space (8) between the partition wall member (5) and the front bumper (1), and allows air introduced through the air inlet (1a) to enter; the passage forming member (9) forms an intake passage (9a) from the intake unit (10) to the internal combustion engine (7),

the vehicle air intake apparatus (100) is characterized in that,

the intake unit (10) is configured to have an intake port (28) facing the front space (8) and an exhaust port (35) connected to the intake passage (9a), and form an internal passage (PA1, PA2) from the intake port (28) to the exhaust port (35),

the air intake opening (28) is provided in a side surface (24) on one side in the vehicle width direction of the air intake unit (10).

2. The vehicle air intake apparatus according to claim 1,

the air intake unit (10) has a lower housing member (20) having an upper surface opening (27) on an upper surface thereof and an upper housing member (30) having a bottom surface opening (33) on a bottom surface thereof communicating with the upper surface opening (27),

the lower case member (20) has the side surface (24) provided with the air inlet (28) on one side in the front-rear direction and closed on the other side in the front-rear direction,

the upper case member (30) has a rear surface provided with the exhaust port (35).

3. An air intake device for a vehicle is provided,

a vehicle air intake device (100) is provided with a partition wall member (5), a front bumper (1), an air intake unit (10), and a passage forming member (9), wherein the partition wall member (5) constitutes a front end portion of a housing space (6) for housing an internal combustion engine (7) mounted on a vehicle; the front bumper (1) is arranged in front of the partition wall member (5) and is provided with an air inlet (1 a); the air intake unit (10) is disposed on the one side in the vehicle width direction with respect to the center in the vehicle width direction of the air inlet (1a) facing the front space (8) between the partition wall member (5) and the front bumper (1), and allows air introduced through the air inlet (1a) to enter; the passage forming member (9) forms an intake passage (9a) from the intake unit (10) to the internal combustion engine (7),

the vehicle air intake apparatus (100) is characterized in that,

the intake unit (10) has:

a lower housing member (20) having an air inlet (28) facing the front space (8) and having an upper surface opening (27) on an upper surface; and

an upper housing member (30) having an exhaust port (35) connected to the passage forming member (9) and having a bottom surface opening (33) in a bottom surface thereof communicating with the upper surface opening (27),

the lower casing member (20) has a bottom wall (21), and a front wall (22), a rear wall (23), a1 st side wall (24), and a2 nd side wall (25) that are erected from the front and rear portions of the bottom wall (21), the end portion on one side in the vehicle width direction, and the end portion on the other side in the vehicle width direction, respectively, so as to form a1 st internal passage (PA1) from the air intake opening (28) to the upper surface opening (27), and the air intake opening (28) is opened on one side in the front-rear direction of the 1 st side wall (24),

the upper case member (30) is configured to have the exhaust port (35) on a rear surface, and to form a2 nd internal passage (PA2) communicating with the 1 st internal passage (PA1) from the bottom surface opening (33) to the exhaust port (35).

4. The vehicle air intake apparatus according to claim 3,

the intake unit (10) further has a sealing member (13), the sealing member (13) being interposed between the 2 nd side wall (25) of the lower case member (20) and the upper case member (30).

5. The vehicle air intake apparatus according to claim 4,

the lower case member (20) has a support portion (250) that supports the seal member (13),

the seal member (13) extends to the other side in the vehicle width direction through the upper portion of the 2 nd side wall (25) of the lower case member (20),

the upper case member (30) has a protruding portion (39) that protrudes so as to press the seal member (13) downward on the other side in the vehicle width direction than the 2 nd side wall (25).

6. The vehicle intake apparatus according to any one of claims 3 to 5,

the lower case member (20) further has an upper wall (26) connected to an upper end of the front wall (22) and an upper end of a front portion of the 2 nd side wall (25) and extending substantially parallel to the bottom wall (21), and the upper surface opening (27) is formed behind the upper wall (26).

7. The vehicle intake apparatus according to any one of claims 2 to 6,

the rear end of the upper case member (30) has a fixing portion (31b) fixed to the upper surface of the partition wall member (5), and the bottom of the rear end side has a sealing member (14) that seals a gap with the upper surface of the partition wall member (5).

8. The vehicle air intake apparatus according to claim 7,

the upper case member (30) has a plate portion (31) that is substantially rectangular in plan view, and a tube portion (32) that extends rearward from the front-rear direction center portion of the upper surface of the plate portion (31), and the exhaust port (35) is provided on the rear end surface of the tube portion (32).

9. The vehicle intake apparatus according to any one of claims 2 to 8,

the bulkhead member (5) is a1 st frame extending in the left-right direction,

the vehicle intake device further includes a2 nd frame (51) extending substantially parallel to the bulkhead member (5) in front of the bulkhead member (5); and

a pair of a right and left 3 rd frame (521) and a 4 th frame (522) extending in the front-rear direction between the 1 st frame (5) and the 2 nd frame (51),

the upper surface opening (27) and the bottom surface opening (33) are provided in a space surrounded by the 1 st frame (5), the 2 nd frame (51), the 3 rd frame (521), and the 4 th frame (522).

10. The vehicle intake apparatus according to any one of claims 2 to 9,

further comprising an air guide member (4), wherein the air guide member (4) is provided in the front space (8) so as to extend in the vehicle width direction from the rear of the air inlet (1a) to the lower side of the lower case member (20),

the air inlet (28) is provided from the front end of the lower casing member (20) to the rear of the rear end of the upper surface of the air guide member (4) located below the lower casing member (20).