Vehicle intake device

Abstract

To provide a vehicle intake device which has a simple and compact structure in which an air intake duct is applicable to a small vehicle, can prevent water from entering an engine in the time of driving through flooded roads by the vehicle and can supply the low-temperature air to the engine in the time of regular driving by the vehicle.SOLUTION: A vehicle-side air intake duct 31 has an air discharge port 31B that opens toward the vehicle rear side and has a rectangular cross-section. An engine-side air intake duct 41 includes an air intake port 42A that opens toward one side of a vehicle width direction and an upstream side passage section 42 that extends from the air intake port 42A toward the other side of the vehicle width direction. When the air discharge port 31B is viewed from the front side of a vehicle, the air intake port 42A and the upstream side passage section 42 are arranged on the inner side of the air discharge port 31B, and a lateral space S2 on the lateral side of the air intake port 42A, and an upper space S1 on the upper side of the upstream side passage section 42 are formed. The vehicle-side air intake duct 31 has a protruding wall section 31G that protrudes to the minute height lower side from its ceiling wall 31C.SELECTED DRAWING: Figure 3

Description

[Technical field]

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

[0002] Patent Document 1 discloses an intake duct for an internal combustion engine that prevents water from being drawn into the internal combustion engine when the vehicle runs through a deep puddle and supplies low-temperature air to the internal combustion engine during normal vehicle running. The intake duct for the internal combustion engine described in Patent Document 1 has a lower duct section that takes air into the engine room from the front of the vehicle, and an upper duct section that is disposed above the lower duct section and takes in air from the lower duct section through a communication port and sends it to the internal combustion engine. Furthermore, the lower duct section is provided with an upper exhaust port that discharges air into the engine room, while the upper duct section is provided with a downstream air intake port that takes in air from the engine room, and when the vehicle runs through a deep puddle and water enters the lower duct section, air is supplied to the upper duct section from the downstream air intake port that communicates with the engine room. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-127695 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the conventional technology described in Patent Document 1, the intake duct has a double structure consisting of a lower duct section and an upper duct section, which makes the intake duct structure complicated and large in size, and may not be applicable to small vehicles with limited space in the engine compartment, leaving room for improvement.

[0005] The present invention has been made in light of the above-mentioned circumstances, and aims to provide an intake device for a vehicle that has an intake duct with a simple and small structure applicable to small vehicles, can prevent water from entering the engine when the vehicle is running on a flooded road, and can supply low-temperature air to the engine when the vehicle is running normally. [Means for solving the problem]

[0006] The present invention is an air intake device for a vehicle comprising: an engine arranged in an engine compartment at the front of the vehicle; a vehicle-side air intake duct arranged at the front of the vehicle for taking in air from the front of the vehicle into the engine compartment; and an engine-side air intake duct arranged at an upper part of the engine compartment and to the rear of the vehicle-side air intake duct for supplying air to the engine, wherein the vehicle-side air intake duct has an air exhaust port that opens facing the rear of the vehicle and has a rectangular cross section, the engine-side air intake duct has an air intake opening facing one side in the vehicle width direction and an upstream passage portion extending from the air intake to the other side in the vehicle width direction, when the air exhaust port is viewed from the front side of the vehicle, the air intake and the upstream passage portion are arranged inside the air exhaust port, and a lateral space on one side of the air intake and an upper space above the upstream passage portion are formed, the air exhaust port has a ceiling wall located at its upper part, and a protruding wall portion protruding downward a small height from the ceiling wall is arranged. Effect of the Invention

[0007] Thus, according to the present invention, it is possible to provide an intake device for a vehicle that has an intake duct with a simple and small structure applicable to small vehicles, can prevent water from entering the engine when the vehicle is traveling on a flooded road, and can supply low-temperature air to the engine when the vehicle is traveling normally. [Brief description 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. [Diagram 2]FIG. 2 is a perspective view of a vehicle intake device according to an embodiment of the present invention. [Diagram 3] FIG. 3 is a front view of the vehicle air intake device and the bumper garnish according to one embodiment of the present invention. [Figure 4] 4 is a cross-sectional view of the vehicle intake device shown in FIG. 1 taken along the line IV-IV. [Diagram 5] 5 is a cross-sectional view of the vehicle intake device shown in FIG. 4 taken along the arrow VV. [Figure 6] FIG. 6 is a front view of a vehicle intake device according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] a vehicle intake device for controlling the intake of air from the front of the vehicle into the engine room; and an engine side intake duct for supplying air to the engine, the vehicle side intake duct having an air outlet that opens toward the rear of the vehicle and has a rectangular cross section; the engine side intake duct having an air intake that opens toward one side in the vehicle width direction and an upstream passage portion extending from the air intake to the other side in the vehicle width direction; when the air outlet is viewed from the front side of the vehicle, the air intake and the upstream passage portion are located inside the air outlet, and a lateral space is formed on one side of the air intake and an upper space above the upstream passage portion; the air outlet has a ceiling wall located at its upper portion, and a protruding wall portion is disposed protruding downward a small height from the ceiling wall. As a result, the vehicle intake device of one embodiment of the present invention has an intake duct with a simple and compact structure that can be applied to small vehicles, while preventing water from entering the engine when the vehicle is traveling on a flooded road and supplying low-temperature air to the engine during normal vehicle driving. EXAMPLES

[0010] An intake device for a vehicle according to an embodiment of the present invention will be described below with reference to the drawings. Figures 1 to 6 are diagrams showing an intake device for a vehicle according to an embodiment of the present invention. In Figures 1 to 6, 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).

[0011] First, the configuration will be described. In Fig. 1, a bumper garnish 30 extending in the vehicle width direction is provided at the front of a vehicle 1. The bumper garnish 30 is provided between a bumper 32 (see Fig. 4) and a bonnet (not shown) in the vehicle up-down direction. The bumper garnish 30 is a member that constitutes the front end portion of the vehicle 1, and is sometimes referred to as a grill.

[0012] An engine room 21 is formed behind the bumper garnish 30 at the front of the vehicle 1. An engine 22 is disposed in the engine room 21. The engine 22 includes an engine body 22A, an air cleaner 29 provided on an upper portion of the engine body 22A, and the like.

[0013] The engine 22 has a cylinder head cover 23 at its upper part. An engine body 22A of the engine 22 includes the cylinder head cover 23, a cylinder head (not shown) connected to the lower part of the cylinder head cover 23, a cylinder block (not shown) connected to the lower part of the cylinder head, and an oil pan (not shown) connected to the lower part of the cylinder block.

[0014] 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 the rotational motion of the crankshaft via the connecting rods. The engine body 22A is arranged horizontally in the engine room 21 so that the plurality of cylinders are aligned in the width direction of the vehicle 1.

[0015] The bumper garnish 30 is formed with a vehicle body side intake duct 31, which takes in air from the front of the vehicle into the engine compartment 21.

[0016] An engine-side intake duct 41 that supplies air to the engine 22 is provided above the engine compartment 21 and behind the vehicle-side intake duct 31. An air intake port 42A that opens toward one side in the vehicle width direction (the right side) is formed at the upstream end of the engine-side intake duct 41. The downstream end of the engine-side intake duct 41 is connected to the air cleaner 29.

[0017] In detail, the engine side intake duct 41 has an upstream passage section 42 extending from an air intake 42A to the other side (left) of the vehicle width direction, and a downstream passage section 43 that turns back at the left end of the upstream passage section 42 and extends to the right, with the air intake 42A formed at the upstream end of the upstream passage section 42, and the downstream end of the downstream passage section 43 connected to the air cleaner 29 behind the air intake 42A.

[0018] The engine side intake duct 41 is disposed above and spaced apart from the cylinder head cover 23 and is supported by the cylinder head cover 23 .

[0019] An outlet hose (not shown) is provided above the engine compartment 21 and behind the vehicle body side intake duct 31. The upstream end of the outlet hose is connected to the air cleaner 29, and the downstream end of the outlet hose is connected to the engine 22.

[0020] The engine side intake duct 41 and the outlet hose are connected to the front surface of the air cleaner 29. More specifically, the engine side intake duct 41 is connected to the lower part of the front surface of the air cleaner 29, and the outlet hose is connected to the upper part of the front surface of the air cleaner 29.

[0021] The inside of the air cleaner 29 is divided into an upper space and a lower space by an air cleaner element (not shown) that filters the air. Air introduced into the lower space of the air cleaner 29 from the engine side intake duct 41 passes through the air cleaner element, moves to the upper space, and is supplied to the engine 22 via an outlet hose.

[0022] 3, the vehicle-body-side intake duct 31 has an air exhaust port 31B that opens toward the rear of the vehicle, and the cross section of the air exhaust port 31B is formed in a rectangular shape. The vehicle-body-side intake duct 31 has a vehicle-body-side air intake port 31A that opens toward the front of the vehicle, and the cross section of the vehicle-body-side air intake port 31A is formed in a rectangular shape. When the vehicle 1 is traveling, air in front of the vehicle 1 (traveling wind) is taken in by the vehicle-body-side air intake port 31A of the vehicle-body-side intake duct 31 and discharged from the air exhaust port 31B to the engine room 21.

[0023] Body-side intake duct 31 has a ceiling wall 31C located at its upper part, a bottom wall 31D located at its lower part, a side wall 31E located on its left side, and a side wall 31F located on its right side.

[0024] The flow path of the vehicle-body-side intake duct 31 narrows toward the rear so that the opening area of ​​the air exhaust port 31B is smaller than that of the vehicle-body-side air intake port 31A. This makes the flow rate of the air exhausted from the air exhaust port 31B faster than the flow rate of the air taken in through the vehicle-body-side air intake port 31A, thereby suppressing air stagnation in the engine room 21.

[0025] 2, 3, 4 and 5, the vehicle body side intake duct 31 has a protruding wall portion 31G that protrudes downward by a small height from the rear edge portion of a ceiling wall 31C.

[0026] 3, when the air exhaust port 31B is viewed from the front side of the vehicle, the air intake 42A and the upstream passage portion 42 are disposed inside the air exhaust port 31B. Also, a side space S2 is formed on the side of the air intake 42A, and an upper space S1 is formed above the upstream passage portion 42. The protruding wall portion 31G is disposed in the region of the side space S2.

[0027] The inside of air exhaust port 31B refers to the inside of the area of ​​air exhaust port 31B. In addition, the fact that air intake 42A and upstream passage section 42 are disposed inside air exhaust port 31B when air exhaust port 31B is viewed from the front side of the vehicle means, in other words, that air intake 42A and upstream passage section 42 can be seen through air exhaust port 31B when looking rearward from air exhaust port 31B, and that air discharged rearward from air exhaust port 31B directly reaches air intake 42A and upstream passage section 42.

[0028] 2 and 4, the vehicle body intake duct 31 and the upstream passage portion 42 are disposed above and spaced apart from the upper surface of the cylinder head cover 23. The upstream passage portion 42 is supported by the cylinder head cover 23 near the air intake 42A and near the other end (left end) in the vehicle width direction by legs 41A that are long in the vehicle up-down direction. A lower end of the leg 41A of the upstream passage portion 42 is connected to an upper end of a pedestal portion 23A that extends upward from the upper surface of the cylinder head cover 23.

[0029] 2, 3, and 4, the ceiling wall 31C connects the upper edge of the vehicle body air intake 31A and the upper edge of the air exhaust port 31B, and is inclined downward toward the rear so that its rear edge is lower than its front edge. The bottom wall 31D is inclined upward toward the rear, and the left and right side walls 31E, 31F are inclined so that they approach each other toward the rear.

[0030] 6, the upstream passage portion 42 of the engine-side intake duct 41 is inclined upward to the left so that the end portion (left end portion) on the other side in the vehicle width direction is higher than the air intake 42A side. This makes it possible to prevent water from entering the air intake 42A from being sucked into the engine 22 via the air cleaner 29.

[0031] Furthermore, the air introduced into the lower space of the air cleaner 29 from the engine side intake duct 41 moves to the upper space of the air cleaner 29 and then is supplied to the engine 22 via the outlet hose. Therefore, if water enters the air intake 42A, the water can be prevented from moving to the upper space of the air cleaner 29 and then being sucked into the engine 22 via the outlet hose.

[0032] When the vehicle 1 is traveling, as shown by the arrow A1 in Fig. 1 and Fig. 4, air (wind caused by traveling) taken into the vehicle-body-side air intake 31A of the vehicle-body-side air intake duct 31 is forcefully discharged horizontally and rearward from the air exhaust port 31B of the vehicle-body-side air intake duct 31 and is supplied to the engine room 21.

[0033] In this embodiment, the vehicle body side intake duct 31 has an air discharge port 31B that opens toward the rear of the vehicle and has a rectangular cross section. The engine side intake duct 41 has an air intake 42A that opens toward one side of the vehicle width direction, and an upstream passage portion 42 that extends from the air intake 42A to the other side of the vehicle width direction. When the air discharge port 31B is viewed from the front side of the vehicle, the air intake 42A and the upstream passage portion 42 are arranged inside the air discharge port 31B, and a side space S2 on the side of the air intake 42A and an upper space S1 above the upstream passage portion 42 are formed. The air discharge port 31B has a ceiling wall 31C located at its upper portion, and a protruding wall portion 31G that protrudes downward by a small height from the ceiling wall 31C is arranged.

[0034] As a result, the air supplied to the engine room 21 from the vehicle body side intake duct 31 can be drawn in by a single engine side intake duct 41, and there is no need for the vehicle body side intake duct 31 to have a double structure consisting of a lower duct section and an upper duct section, so the vehicle body side intake duct 31 and the engine side intake duct 41 as intake ducts can be made to have a simple and compact structure that is applicable to small vehicles.

[0035] As shown in FIG. 4, when the vehicle 1 is traveling on a flooded road, water collides with the front part of the vehicle 1, causing a ridge (height difference) on the water surface, and the water level W1 in the engine room 21 may be higher than that in the front of the vehicle, and the water level W1 in the front of the vehicle may reach the vicinity of the ceiling wall 31C of the vehicle-side intake duct 31. In this embodiment, the water that has entered the vehicle-side intake duct 31 and reached the vicinity of the ceiling wall 31C is guided downward by the protruding wall portion 31G provided on the ceiling wall 31C as shown by the arrow W2, and falls below the air intake 42A between the vehicle-side intake duct 31 and the engine-side intake duct 41. Therefore, the air in the engine room 21 can be sucked into the air intake 42A while preventing water from being sucked into the air intake 42A of the engine-side intake duct 41 (see arrow A1). Therefore, water can be prevented from entering the engine 22 when the vehicle 1 is traveling on a flooded road.

[0036] Furthermore, during normal running of the vehicle 1, the air intake 42A of the engine-side intake duct 41 can take in low-temperature air that is forcefully exhausted rearward and horizontally from the air exhaust port 31B of the vehicle-body-side intake duct 31 into the engine compartment 21, rather than the warm air that is heated by the engine 22 and remains in the engine compartment 21. Furthermore, since the protruding wall portion 31G is structured to protrude downward from the ceiling wall 31C by a small height, it is possible to prevent the flow direction and flow rate of the air exhausted from the air exhaust port 31B from being significantly changed due to the influence of the protruding wall portion 31G. Therefore, low-temperature air can be supplied to the engine 22 during normal running of the vehicle 1.

[0037] As a result, the vehicle body side intake duct 31 and the engine side intake duct 41 as intake ducts have a simple and small structure applicable to small vehicles, while water can be prevented from entering the engine when the vehicle 1 is traveling on a flooded road, and low-temperature air can be supplied to the engine 22 during normal driving of the vehicle 1.

[0038] In this embodiment, the protruding wall portion 31G is disposed in the region of the side space S2.

[0039] As a result, even if water flies toward the upper space S1 above the upstream passage 42, which is a portion where the protruding wall 31G is not provided, when the vehicle 1 is traveling on a flooded road, the flying water collides with the upstream passage 42, but does not flow around the air intake 42A and is not sucked in, thereby preventing the water from entering the air intake 42A. Also, because the protruding wall 31G is disposed in the region of the side space S2 to the side of the air intake 42A, a large amount of low-temperature air can be supplied to the air intake 42A without being affected by the protruding wall 31G during normal traveling of the vehicle 1.

[0040] In this embodiment, the engine 22 has a cylinder head cover 23 on its upper part, the vehicle body side intake duct 31 and the upstream passage portion 42 are arranged at a distance above the upper surface of the cylinder head cover 23, and the upstream passage portion 42 is supported on the cylinder head cover 23 by legs 41A that are long in the vertical direction of the vehicle.

[0041] This allows the vehicle body side intake duct 31 and the upstream passage portion 42 of the engine side intake duct 41 to be positioned at a higher position in the vertical direction of the vehicle, making it difficult for water to enter the engine side intake duct 41 when the vehicle 1 is traveling on a flooded road.

[0042] In this embodiment, the vehicle body side intake duct 31 has a vehicle body side air intake 31A that opens toward the front of the vehicle and has a rectangular cross section, and the ceiling wall 31C connects the upper edge of the vehicle body side air intake 31A to the upper edge of the air exhaust port 31B and is inclined downward toward the rear so that the position of its rear edge is lower than its front edge.

[0043] In this way, by tilting the ceiling wall 31C downward to the rear, the angle formed by the ceiling wall 31C and the protruding direction of the protruding wall portion 31G can be made an obtuse angle, and water flowing along the ceiling wall 31C toward the air exhaust port 31B while the vehicle 1 is traveling on a flooded road can be smoothly guided downward by the protruding wall portion 31G.

[0044] Although an embodiment of the invention has been disclosed, it will be apparent to one of ordinary skill in the art that modifications may be made therein without departing from the spirit and scope of the invention, and it is intended that all such modifications and equivalents be included in the following claims. [Explanation of symbols]

[0045] 1...vehicle, 21...engine room, 22...engine, 23...cylinder head cover, 31...vehicle body side intake duct, 31A...vehicle body side air intake, 31B...air exhaust port, 31C...ceiling wall, 31G...protruding wall portion, 41...engine side intake duct, 41A...leg portion, 42...upstream passage portion, 42A...air intake port, S1...upper space, S2...side space

Claims

1. An engine disposed in an engine compartment at the front of the vehicle; A vehicle body side intake duct that is disposed at a front portion of the vehicle and takes in air from the front of the vehicle into the engine compartment; an engine-side intake duct arranged in an upper portion of the engine compartment and to the rear of the vehicle-body-side intake duct, the engine-side intake duct supplying air to the engine, the vehicle body side air intake duct has an air exhaust port that opens toward the rear of the vehicle and has a rectangular cross section; the engine-side intake duct has an air intake opening facing one side in a vehicle width direction, and an upstream passage portion extending from the air intake opening to the other side in the vehicle width direction, When the air exhaust port is viewed from the front side of the vehicle, the air intake port and the upstream passage portion are disposed inside the air exhaust port, and a side space is formed on a side of the air intake port and an upper space is formed above the upstream passage portion, The air outlet has a ceiling wall located at an upper portion thereof, and a protruding wall portion is disposed so as to protrude downward by a slight height from the ceiling wall.

2. The vehicle intake device according to claim 1 , wherein the protruding wall portion is disposed in the region of the side space.

3. The engine has a cylinder head cover at its upper portion, the vehicle body side intake duct and the upstream side passage portion are disposed above and spaced apart from an upper surface of the cylinder head cover, 3. The vehicle intake system according to claim 1, wherein the upstream passage portion is supported by the cylinder head cover by a leg portion that is long in the vertical direction of the vehicle.

4. the vehicle body side intake duct has an opening facing the front of the vehicle and a vehicle body side air intake port having a rectangular cross section, 3. The vehicle intake device according to claim 1, wherein the ceiling wall connects an upper edge of the vehicle body side air intake with an upper edge of the air exhaust port, and is inclined rearward so that a rear edge of the ceiling wall is lower than a front edge of the ceiling wall.

Images