JP2010083217A - Structure for arranging heat exchanger of vehicle front body part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure for arranging a heat exchanger of a vehicle front body part capable of preventing the entry of travel wind that passed through a second heat exchanger into a wheel house, allowing the wind to pass to the lower face of the vehicle body in front of the wheel house, leading out the wind to a negative pressure area in an inconspicuous manner, preventing water or wind that entered from the front of the vehicle from falling on a suspension or a brake arranged in the wheel house to achieve rust prevention for them, and moreover, preventing the entry of mud or water, or gravel raised up by the front wheel upon the reverse travel of the vehicle into a fender via the wheel house, and furthermore, achieving miniaturization of the second heat exchanger by leading out the travel wind to the negative pressure area. <P>SOLUTION: A lead-out flow path 19 for leading out the travel wind that passed through the second heat exchanger 10 out of the travel wind led inside the vehicle front body part from an air lead-in opening, is arranged in front of the wheel house 5, and the outlet 19A of the lead-out flow path 19 is formed so as to be directed in the downward direction of the vehicle front body part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention has a front bumper face that forms an outer surface of a front portion of a vehicle body and is formed with an air introduction opening that introduces running wind into the vehicle body. A radiator is provided behind the air introduction opening of the front bumper face. A heat exchanger at the front of the vehicle body in which a second heat exchanger such as an intercooler is disposed between the air introduction opening and the wheel house accommodating the front wheel. The present invention relates to an arrangement structure.

  Generally, when an engine room is provided in the front of the vehicle, the engine is mounted in the engine room, and a radiator for cooling the engine cooling water is disposed in front of the engine, Is provided with an air introduction opening for introducing a traveling wind for cooling the radiator.

  On the other hand, the air introduction opening may be formed on the front bumper face that forms the outer surface of the front bumper. There is also a vehicle in which an intercooler for cooling the intake air supplied to the combustion chamber of the engine is provided at a position offset from the air introduction opening in a front view of the vehicle body.

In this case, if the configuration in which the running air for cooling the intercooler is introduced from the air introduction opening, there is a problem in that the amount of cooling air supplied to the radiator is reduced, and it is necessary to separately provide an air introduction opening for cooling the intercooler. It was.
However, when a large number of air introduction openings are provided, there arises a problem that the degree of freedom in designing the bumper face such as the fog lamp arrangement position is greatly reduced.

Furthermore, when cooling air is introduced from the front of the vehicle to cool the intercooler, the flow path is generally provided in a substantially straight line in the longitudinal direction of the vehicle in order to suppress the flow velocity loss of the driving air when the intercooler is introduced. As a result, the traveling wind that has passed through is discharged into the wheel house in the positive pressure region.
In this way, when an opening for the intercooler is provided in the front of the vehicle, stones scattered by other vehicles traveling in front of the vehicle are scattered and hit the intercooler from the opening, causing damage to the intercooler or intrusion of water. This will cause the brakes and suspensions in the wheelhouse to rust out through the back of the intercooler.

In addition, when the vehicle is moving backward, mud and water splashed by the front wheel tires enter the inside of the body through the running wind exhaust after passing through the intercooler provided in the wheel house, which may cause the fender, wheel house, etc. to rust. .
Further, the traveling wind that has passed through the intercooler is discharged into the wheel house in the positive pressure region as described above, and the air in the wheel house is in the positive pressure state, and the intercooler can be cooled with the traveling wind. Although it was possible, there was a problem that effective cooling could not be expected.

By the way, Patent Document 1 discloses a structure in which an intercooler is slanted in a slanted manner in front and rear and above and below a radiator in an engine room. However, in this Patent Document, traveling that flows into the intercooler is disclosed. There is no disclosure or suggestion about the technical idea that the outlet for discharging the wind is formed toward the lower surface of the vehicle body.
Japanese Patent Laid-Open No. 4-252731

  In view of this, the present invention provides an outlet channel for leading the traveling wind that has passed through the second heat exchanger out of the traveling wind introduced from the air introduction opening into the front portion of the vehicle body. In addition, by forming the outlet of the outlet channel facing the lower part of the front of the vehicle body, the traveling wind passing through the second heat exchanger is prevented from entering the wheel house, and the traveling wind is It is designed so that it can escape to the underside of the car body in front of the house, and the wind can be led out to the negative pressure area without conspicuous, and the water and wind entering from the front of the vehicle fall on the suspension and brakes provided in the wheel house. This prevents rust, and prevents mud, water, and gravel that the front wheels have rolled up when the vehicle is moving backwards from entering the fender via the wheel house. Lead By, and an object thereof is to provide a vehicle body front portion of the heat exchanger arrangement structure which can be miniaturized in the second heat exchanger.

The heat exchanger arrangement structure for the front part of the vehicle body according to the present invention has a front bumper face that forms an outer surface of the front part of the vehicle body and is formed with an air introduction opening for introducing running air into the vehicle body. A vehicle body front portion in which a first heat exchanger is disposed behind an air introduction opening of the face, and a second heat exchanger is disposed between the air introduction opening and a wheel house that houses a front wheel. The heat exchanger arrangement structure of the present invention has a lead-out flow path for deriving the traveling wind that has passed through the second heat exchanger out of the traveling wind introduced from the air introduction opening into the front portion of the vehicle body. In addition to being provided in front of the wheel house, the outlet of the outlet channel is formed facing the lower part of the front part of the vehicle body.
The first heat exchanger described above may be set as a radiator, and the second heat exchanger may be set as an intercooler.

According to the above configuration, the traveling wind passes through the second heat exchanger and is then discharged toward the road surface facing the lower surface of the front portion of the vehicle body via the outlet channel and the outlet thereof.
For this reason, it is possible to prevent the traveling wind passing through the second heat exchanger from entering the wheel house, and the traveling wind passes to the lower surface of the vehicle body in front of the wheel house. In addition to being able to lead out inconspicuously, it is possible to prevent the water and wind entering from the front of the vehicle from falling on the suspension and brakes provided in the wheel house, and to obtain a rust prevention effect.

Further, it is possible to prevent mud, water, gravel, etc., rolled up by the front wheels when the vehicle moves backward, from entering the fender through the wheel house.
Furthermore, since the traveling wind is led out to the negative pressure region, the flow velocity of the traveling wind is increased by the negative pressure, and the cooling effect of the second heat exchanger by the traveling wind is improved. As a result, the size of the second heat exchanger can be made smaller than that of the conventional one, and the size of the second heat exchanger can be reduced.

In one embodiment of the present invention, an introduction flow path for introducing at least a part of the traveling wind introduced from the air introduction opening into the second heat exchanger is provided in front of the second heat exchanger. It is what has been.
According to the above configuration, the traveling wind introduced from the air introduction opening can be positively secured from the region that does not flow into the first heat exchanger among the traveling winds introduced from the air introduction opening. The wind can be used without any leakage, and the cooling effect of both heat exchangers can be enhanced.

In one embodiment of the present invention, the second heat exchanger is disposed with a predetermined inclination so as to face upward of the vehicle body.
According to the above configuration, since the second heat exchanger faces the outlet of the outlet channel, the flow velocity loss of the traveling wind is reduced, and the cooling effect of the second heat exchanger can be enhanced.

In one embodiment of the present invention, the second heat exchanger is disposed such that its outer front end is located in front of the vehicle in front of the inner front end so as to face the air introduction opening.
According to the said structure, since a 2nd heat exchanger comes to oppose the inlet_port | entrance of an introduction flow path, the cooling effect of a 2nd heat exchanger can be heightened.

In one embodiment of the present invention, a front bumper rain disposed between the front bumper face and the first heat exchanger in the vehicle width direction and having a predetermined vertical width, and the front bumper A bumper rain cover that covers the front surface of the bumper rain, crosses the air introduction opening in the vehicle width direction, and is disposed to form a continuous surface with the surface of the front bumper face. And an air introduction part for introducing traveling wind into the interior of the front part of the vehicle body, and the introduction flow path is connected to the air introduction part.
According to the said structure, a 2nd heat exchanger can be cooled, without utilizing the driving | running | working wind which cools a 1st heat exchanger.

In one embodiment of the present invention, the air introduction part is formed in the bumper rain cover, and the introduction flow path is continuously formed from the air introduction part toward the second heat exchanger. It is.
According to the above configuration, it is possible to reduce the number of parts and the number of positioning steps and assembly steps.

In one embodiment of the present invention, a mounting hole for attaching a fog lamp is formed in the front bumper face so as not to overlap the second heat exchanger as viewed from the front of the vehicle body.
According to the said structure, even if a fog lamp reverse | retreats at the time of a vehicle front collision, a 2nd heat exchanger is not damaged. Further, when the heat exchanger is disposed so that the area occupied by the second heat exchanger is reduced when viewed from the front of the vehicle body, the degree of freedom of the fog lamp mounting position can be improved.

  According to the present invention, the lead-out flow path for leading the traveling wind that has passed through the second heat exchanger out of the traveling wind introduced from the air introduction opening into the front portion of the vehicle body is provided in front of the wheel house. In addition, since the outlet of the outlet channel is formed facing the lower part of the front of the vehicle body, the traveling wind that has passed through the second heat exchanger is prevented from entering the wheel house. The vehicle winds down to the underside of the vehicle body so that the driving wind can be led out inconspicuously to the negative pressure area, and the water and wind that enter from the front of the vehicle fall on the suspension and brakes provided in the wheel house. Preventing these rusts, preventing mud, water, gravel, etc., rolled up by the front wheels when the vehicle is moving backward, from entering the fender via the wheel house, and further, driving wind in the negative pressure area Derive It is an effect which can reduce the size of the second heat exchanger.

  Prevents running wind after passing through the second heat exchanger from entering the wheel house, prevents water and wind from falling on the suspension and brakes provided in the wheel house, and winds up the front wheels when the vehicle is moving backward The purpose is to prevent mud, water, gravel, etc. from entering the fender through the wheel house, and to further reduce the size of the second heat exchanger by leading the traveling wind to the negative pressure region. A front bumper face that forms an outer surface of the front portion of the vehicle body and has an air introduction opening for introducing running wind into the vehicle body; a first heat exchanger behind the air introduction opening of the front bumper face And a heat exchanger disposition structure at the front of the vehicle body in which a second heat exchanger is disposed between the air introduction opening and the wheel house that houses the front wheel, wherein the air introduction Above the opening Of the traveling wind introduced into the front part of the vehicle body, an outlet channel for leading the traveling wind that has passed through the second heat exchanger is provided in front of the wheel house, and an outlet of the outlet channel Is realized by facing the lower part of the front part of the vehicle body.

An embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a front view of a vehicle having a heat exchanger arrangement structure at the front of the vehicle body, and FIG. 2 is a schematic plan view of the front of the vehicle body along the line AA in FIG. Front side frames 3, 3 as vehicle body rigid members having a closed cross-sectional structure extending in the front-rear direction of the vehicle are provided at the left and right portions of the engine room 2 in which is disposed. In this embodiment, the engine 1 is arranged horizontally, but the engine 1 may of course be arranged vertically.
A wheel house 5 that houses front wheels 4 and 4 (see FIG. 1) supported by the vehicle body via a front suspension (not shown) on the outside of the pair of left and right front side frames 3 and 3 in the vehicle width direction. , 5 are provided.

  On the other hand, crash cans (impact energy absorbing members) 7 and 7 are attached to the front end portions of the pair of left and right front side frames 3 and 3 via flanges 6 and 6, respectively. Is a front bumper rain 8 extending in the vehicle width direction (specifically, a front bumper reinforcement, which will be simply abbreviated as “bumper rain” hereinafter), and constitutes a front part of the vehicle body.

Further, a radiator 9 as a first heat exchanger is installed upright in front of the engine 1 and between the left and right front side frames 3 and 3, specifically between the left and right crash cans 7 and 7. Has been established. For convenience of illustration, a cooling fan provided integrally with the rear portion of the radiator 9 is not shown.
Here, the above-described bumper rain 8 extends in the vehicle width direction in front of the radiator 9, and the bumper rain 8 has a predetermined vertical width as shown by a dotted line in FIG.

  Further, in the vehicle exterior of the left front side frame 3 of the pair of left and right front side frames 3, 3 and in front of the wheel house 5, compressed air (intake air) flowing into the engine 1 is cooled. 2 is provided as an intercooler 10 as a heat exchanger. The intercooler 10 cools intake air to improve intake charging efficiency, and is often used for diesel engine vehicles and vehicles equipped with an intake system with a supercharger.

Further, as shown in FIGS. 1 and 2, a front bumper face 11 (hereinafter simply referred to as a bumper face) that covers the front part of the engine room 2 and constitutes the outer surface of the front part of the vehicle body is provided. As shown in FIG. 1, an air introduction opening 12 is formed in a region corresponding to the front of the radiator 9 in the vehicle width direction central portion of the bumper face 11. The air introduction opening 12 takes in the traveling wind and cools the inside of the engine room 2, particularly the above-mentioned radiator 9.
Here, the bumper rain 8 described above is disposed between the bumper face 11 and the radiator 9 in the vehicle width direction and having a predetermined vertical width.
In FIG. 1, 13 and 13 are left and right headlamps disposed at both the left and right portions of the front portion of the vehicle at a position higher than the air introduction opening 12, and 14 is a hood that covers the upper portion of the engine room 2. .

3 is an enlarged plan view of the main part of FIG. 2, and FIG. 4 is a side view taken along the line BB of FIG. 2. In FIGS. 1 to 4, the front side of the bumper rain 8 is behind the bumper face 11. A resin bumper rain cover 15 is provided to cover the cover.
As shown in the front view of FIG. 1, the bumper rain cover 15 extends in the vehicle width direction with a vertical width wider than the vertical width of the bumper rain 8 at the middle in the vertical direction of the air introduction opening 12. The bumper rain cover 15 is disposed so as to cross the air introduction opening 12 in the vehicle width direction.

  As shown in FIG. 2, the above-described bumper rain cover 15 is fixed to the bumper face 11 from the rear so that the surface thereof forms a continuous surface with the surface of the bumper face 11.

  As shown in FIG. 1, a bumper rain cover 15 is provided in the middle of the air introduction opening 12 in the vertical direction so as to be continuous with the bumper face 11. Openings 12A and 12B are formed, and the above-described radiator 9 is cooled (air-cooled) by the traveling wind flowing in from these upper and lower openings 12A and 12B for introducing traveling wind.

  FIG. 5 is a perspective view of a state in which the front portion of the vehicle body is looked up obliquely from below, and FIG. 6 is a perspective view of the state in which the front portion of the vehicle body is looked down obliquely from above, as shown in FIGS. 1, 2, 5, and 6. Thus, between the bumper rain cover 15 and the bumper face 11, an air introduction portion 16 that guides the traveling wind into the engine room 2 is provided, and the cooling effect of the entire engine room 2 is enhanced.

  The air introduction portion 16 is formed on the side where the intercooler 10 is disposed, that is, on the left side of the continuous surface boundary α, among the left and right continuous surface boundaries α and β between the bumper rain cover 15 and the bumper face 11. As shown in the front view of FIG. 1, the air introduction portion 16 is provided so as to be concealed by the bumper face 11 in the front view of the vehicle body. That is, the air introduction part 16 is formed so as not to be seen from the front, and the appearance is ensured.

As shown in FIGS. 2 to 4, the bumper rain cover 15 is positioned in front of the bumper rain 8, and the bumper rain cover 15 covers the front side of the bumper rain 8 so that the bumper rain cover 15 covers the right end portion of the bumper rain 8. Extends in the vehicle width direction toward the left end.
4 to 6, the bumper rain cover 15 is a synthetic resin cover in which the upper wall 15A, the lower wall 15B, and the rear wall 15C are integrally formed in a substantially U-shape. These walls 15A, 15B, and 15C provide a recessed portion 17 corresponding to the shape of the air introducing portion 16.

  As shown in FIGS. 5 and 6, the concave portion 17 described above has a concave shape with the front of the vehicle open, in other words, a concave shape that is recessed toward the rear of the vehicle, and is provided in the bumper rain cover 15. By providing the portion 17, the air introduction portion 16 is formed between the bumper rain cover 15 and the bumper face 11 at a part of the continuous surface boundary α.

As shown in FIGS. 2, 5, and 6, the recessed portion 17 described above becomes substantially flat with the general surface 15 </ b> D (see FIG. 2) of the bumper rain cover 15 as it goes toward the center of the bumper rain cover 15 in the vehicle width direction. It is formed to become.
That is, as shown by a dotted line in FIG. 2, the groove depth of the concave portion 17 described above is the shallowest at the center in the vehicle width direction, and gradually becomes deeper toward the left and right sides in the vehicle width direction. α is formed so as to be deepest so as to form a side air introduction opening 16 having a sufficient area.

The recessed portion 17 may form a surface that is completely continuous with the general surface 15D of the bumper rain cover 15 toward the center of the bumper rain pad 15 in the vehicle width direction. That is, the groove depth of the recessed portion shown in FIG. 2 is made zero together with the general surface 15D near the center in the vehicle width direction (see FIG. 12), and a continuous surface is formed with the general surface 15D near the center in the vehicle width direction. By doing so, it is possible to form the recessed portion for introducing the traveling wind into the air introduction portion 16 without impairing the appearance of the bumper rain cover in the front view.
That is, if sufficient running wind can be introduced into the intercooler 10, the continuous surface with the general surface 15D may be increased to improve the appearance. If sufficient running wind cannot be introduced into the intercooler 10, the vehicle width A recessed portion having a sufficient groove depth may be formed up to the center in the direction, and the traveling wind introduction amount can be adjusted in accordance with vehicle parameters.

  As shown in FIGS. 1 and 2, an introduction flow path 18 for guiding a part of the traveling wind from the air introduction portion 16 to the above-described intercooler 10 in the air introduction opening 12 is provided on the left rear side of the bumper face 11. It has been. The introduction flow path 18 is provided between the bumper face 11 (specifically, the R portion of the bumper face 11 where the bumper face 11 turns from the vehicle front end to the vehicle side end) and the vehicle exterior of the left front side frame 3. It is a flow path for guiding the traveling wind that has passed through the air introduction section 16 to the intercooler 10.

  As shown in FIGS. 2 and 4, the introduction flow path 18 described above is a flow path formed in an U-shaped cross section from the upper wall 18 </ b> A, the lower wall 18 </ b> B, and the vertical wall 18 </ b> C. The upper wall 18A is continuous with the upper wall 15A of the bumper rain cover 15, the lower wall 18B of the introduction channel 18 is continuous with the lower wall 15B of the bumper rain cover 15, and the vertical wall 18C of the introduction channel 18 is The bumper rain cover 15 is continuous with the rear wall 15C.

  That is, the bumper rain cover 15 and the introduction flow path 18 are integrally formed of synthetic resin, and the air introduction portion 16 is formed in the bumper rain cover 15 and the introduction flow path 18 is connected to the intercooler 10. This is formed continuously from the above-described air introduction part 16. In other words, the introduction flow path 18 is connected to the air introduction section 16, and the introduction flow path 18 extends from the air introduction section 16 and is formed integrally with the bumper rain cover 15 described above.

Incidentally, as shown in a side view in FIG. 4, the intercooler 10 is disposed with a predetermined inclination in a side view so that the core portion 10 a of the intercooler 10 faces upward of the vehicle body. That is, the intercooler 10 is slanted in the front and rear and rear and is disposed so that the outlet 19A of the outlet channel 19 and the core portion 10a, which will be described later, are substantially opposed to each other, thereby reducing the flow velocity loss and cooling effect. It is configured to enhance.
Here, the intercooler 10 includes an inlet tank (not shown) extending in the arrangement direction of the cylinders (not shown) of the engine 1, an outlet tank (not shown), and a core portion 10a between the inlet and outlet tanks. And heat exchange is performed by conductive fins (not shown) provided in the core portion 10a.

  Further, as shown in plan views in FIGS. 2 and 3, the outer front end portion of the intercooler 10 is directed to the air introduction opening 12, more specifically the air introduction portion 16, so that the outer front end portion is closer to the vehicle than the inner front end portion. It arrange | positions so that it may become the front, it has comprised so that the inlet_port | entrance of the introduction flow path 18 and the cooling part 10a may oppose substantially, and it is comprised so that the cooling effect of this intercooler 10 may be improved.

Further, as shown in a side view in FIG. 4, a lead-out flow path 19 for leading the traveling wind that has passed through the intercooler 10 is provided. The outlet channel 19 is provided so as to sandwich the intercooler 10 between the inlet channel 18 and the outlet channel 19. The outlet channel 19 is disposed in front of the wheel house 5, and the outlet channel 19. 19 outlets 19A are formed toward the road surface facing the lower surface of the front portion of the vehicle body.
In this embodiment, the above-described outlet channel 19 is formed by a duct 20, and an outlet 19 </ b> A of the outlet channel 19 is formed on a side under cover 21 provided on a side portion on the lower surface of the vehicle body.

  As shown in a perspective view in FIG. 5, a main under cover 22 and side under covers 21 and 23 are provided on the lower surface of the vehicle body for the purpose of ensuring the effect of rectifying traveling wind flowing on the lower surface. The outlet 19A is formed integrally with the left side under cover 21 shown in FIG. Further, as shown in FIG. 4, the outlet 19A is provided with a louver 24. The louver 24 is configured to prevent foreign matter from entering the lead-out flow path 19, thereby protecting the intercooler 10. I am trying.

As shown in FIGS. 3 and 4, the inclined intercooler 10 is supported on the body side using a plurality of intercooler support brackets 25 and 26.
On the other hand, the intercooler support bracket 25 is fixed to the outer side surface portion of the front side frame 3 in the vehicle width direction, extends from this portion to the bottom of the intercooler 10, and supports the intercooler 10. The other intercooler support bracket 26 It is fixed to the front part of the wheel house 5 and extends from this part to the upper part of the intercooler 10 to support the intercooler 10.

  In FIG. 4, 27 is an upper front grill provided in the air introduction opening 12 corresponding to the upper opening 12A (see FIG. 1) for introducing the traveling wind, and 28 is the lower front grille introduction. This is a lower front grill provided in the air introduction opening 12 corresponding to the side opening 12B (see FIG. 1). The upper and lower front grills 27 and 28 are not shown in other drawings (FIGS. 1, 5, 6, and 7).

By the way, as shown in FIGS. 1 and 7, the bumper face 11 is formed with a mounting hole 30 for attaching the fog lamp 29 so as not to overlap with the intercooler 10 as the second heat exchanger as viewed from the front of the vehicle body.
The fog lamp 29 and the mounting hole 30 are provided in a pair of left and right and symmetrically. In the embodiment of FIG. 1, the mounting hole 30 is provided corresponding to the inner lower portion of the intercooler 10 in the vehicle width direction. Then, the mounting hole 30 is provided corresponding to the middle in the vehicle width direction of the intercooler 10, and the mounting hole 30 for attaching the fog lamp 29 is the same as that of the intercooler 10 when viewed from the front of the vehicle body in any of the embodiments shown in FIGS. It is formed so as not to overlap, and is configured so as not to damage the intercooler 10 even if the fog lamp 29 moves backward during a frontal collision of the vehicle. In addition to the positions shown in FIGS. 1 and 7, the mounting hole 30 and the fog lamp 29 may be provided in the upper portion of the intercooler 10 that does not overlap the intercooler 10 and the introduction flow path 18 in a front view.

  On the other hand, the lower wall 15B of the bumper rain cover 15 shown in FIGS. 1 and 4 is a restricting portion that restricts the traveling wind flowing downward of the vehicle body, and the lower wall 15B as the restricting portion is as shown in FIG. Alternatively, it may be provided horizontally and forward, or may be provided obliquely upward as shown in FIG. 8, or may be provided obliquely downward as shown in FIG.

  As shown in FIG. 8, if the front and rear are formed so that the tip of the lower wall 15B faces obliquely upward, the traveling wind entering the recessed portion 17 is reduced and the traveling wind flowing on the lower surface of the vehicle body is increased. Can be controlled.

  As shown in FIG. 9, when the front and rear of the lower wall 15 </ b> B are formed so as to be inclined obliquely downward, the traveling wind entering the recessed portion 17 is increased and the traveling wind flowing on the lower surface of the vehicle body is decreased. Can be controlled.

  In the embodiment of FIG. 4, an intermediate value between the embodiments of FIGS. 8 and 9 can be secured. Thus, by setting the direction of the lower wall 15B, the traveling wind can be distributed vertically and horizontally, and the conditions such as the lift balance of the vehicle and the cooling effect in the engine room 2 can be appropriately adjusted.

Incidentally, if the traveling wind flows excessively to the vehicle roof side, a vortex is swirled at the rear of the vehicle, and not only the lift balance is deteriorated, but also the air drag coefficient (so-called Cd value) is increased. The flow rate of the traveling wind flowing up and down can be controlled by setting the direction of the lower wall 15B without increasing the vehicle opening area in view.
Although the front spoiler is disadvantageous in relation to the approach angle, this embodiment is advantageous in relation to the approach angle because the front spoiler need not be provided.

Instead of the configuration shown in FIG. 3, the structure shown in FIG. 10 may be adopted.
That is, the introduction flow path 18 shown in FIG. 3 is formed as the introduction flow path 18 having a U-shaped cross section surrounded by three sides of the upper wall 18A, the lower wall 18B, and the vertical wall 18C. The introduction flow path 18 shown in FIG. 1 is formed of an introduction flow path 18 having a closed cross-sectional structure surrounded by four sides of an upper wall 18A (see the previous figure), a lower wall 18B, a vertical wall 18C, and an outer wall 18E. With this configuration, the entire amount of traveling wind flowing from the air introduction unit 16 can be guided to the intercooler 10, and the cooling effect of the intake air by the traveling wind can be further improved.

  Here, the outer wall 18E extends from the vicinity of the air introduction portion 16 to the immediately preceding portion of the intercooler 10 and is configured not to cover the outer surface in the vehicle width direction of the intercooler 10 in consideration of the assembling property of the intercooler 10. is doing. 10, the same parts as those in FIG. 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

Further, instead of the configuration shown in FIG. 9, the structure shown in FIG. 11 may be adopted.
That is, the introduction flow path 18 shown in FIG. 9 is integrated with the bumper rain cover 15 and the flow path from the air introduction portion 16 to the intercooler 10 is integrally formed as a single component. The flow path 18 is obtained by dividing the introduction flow path 18 into a front introduction flow path 18X and a rear introduction flow path 18Y to improve the moldability of the front and rear introduction flow paths 18X and 18Y. Yes, the bumper rain cover 15 and the front introduction flow path 18X are integrally formed, but the front introduction flow path 18X and the rear introduction flow path 18Y are formed separately. In FIG. 11, the same parts as those in FIG. 9 are denoted by the same reference numerals, and detailed description thereof is omitted.
In the figure, arrow F indicates the front of the vehicle, arrow R indicates the rear of the vehicle, arrow IN indicates the inner side of the vehicle, arrow OUT indicates the outer side of the vehicle, and arrow UP indicates the upper side of the vehicle.

The illustrated embodiment is configured as described above, and the operation will be described below.
When the vehicle travels, the traveling wind hits the bumper rain cover 15 that forms a continuous surface with the surface of the bumper face 11, and in the conventional structure, the traveling wind that has escaped to the roof side or the lower surface of the vehicle body is not introduced into the air introduction opening. The traveling wind that has reached the air introduction portion 16 from the recessed portion 17 of the rain cover 15 and flows into the introduction flow path 18 from the air introduction portion 16 flows rearward along the flow path 18, and then cools the intercooler 10. To do.
The traveling wind that has passed through the intercooler 10 passes through the outlet passage 19 formed in front of the wheel house 5 (isolated from the wheel house 5), and the outlet of the passage 19 formed so as to face the road surface. It flows out from 19A to the lower surface side of the front part of the vehicle body.

Since the lower surface side of the front part of the vehicle body is a negative pressure region, the traveling wind flowing through the flow paths 18 and 19 is positively drawn by negative pressure, so the flow velocity of the traveling wind flowing through the flow paths 18 and 19 is improved. Can be achieved.
Further, the traveling wind that has flowed into the engine room 2 from the upper and lower traveling wind introduction openings 12A and 12B in the air introduction opening 12 of the bumper face 11 cools the radiator 9 (air cooling).

As described above, the heat exchanger arrangement structure at the front part of the vehicle body of the above embodiment forms the outer surface of the front part of the vehicle body and the air introduction opening 12 for introducing the traveling wind into the vehicle body (see the engine room 2). A first heat exchanger (refer to the radiator 9) is disposed behind the air introduction opening 12 of the bumper face 11, and accommodates the air introduction opening 12 and the front wheel 4. A heat exchanger arrangement structure in the front part of the vehicle body in which a second heat exchanger (see the intercooler 10) is arranged between the wheel houses 5 and the inside of the front part of the vehicle body from the air introduction opening 12 Among the introduced traveling winds, an outlet passage 19 for leading the traveling wind that has passed through the second heat exchanger (intercooler 10) is provided in front of the wheel house 5, and the outlet passage 19 Exit is at the front of the vehicle Are those formed faces downward (FIG. 1, FIG. 2, see FIG. 4).
In this embodiment, the first heat exchanger is set in the radiator 9 and the second heat exchanger is set in the intercooler 10, respectively.

According to this configuration, after the traveling wind passes through the second heat exchanger (see the intercooler 10), the road surface passes through the outlet passage 19 and the outlet 19A with the outlet 19A facing downward of the front of the vehicle body. It is discharged toward
For this reason, it is possible to prevent the traveling wind passing through the second heat exchanger (see the intercooler 10) from entering the wheel house 5, and the traveling wind passes to the lower surface of the vehicle body in front of the wheel house 5, The driving wind can be led out inconspicuously in the negative pressure region, and water and wind entering from the front of the vehicle to the suspension and brakes provided in the wheel house 5 are prevented from falling, and a rust prevention effect is obtained. be able to.

In addition, it is possible to prevent mud, water, gravel, etc., rolled up by the front wheel 4 during the reverse of the vehicle from entering the fender via the wheel house 5.
Furthermore, since the traveling wind is led out to the negative pressure region, the flow velocity of the traveling wind is increased by the negative pressure, and the cooling effect of the second heat exchanger (see the intercooler 10) by the traveling wind is improved. As a result, the size of the second heat exchanger (see the intercooler 10) can be made smaller than that of the conventional one, and the second heat exchanger (see the intercooler 10) can be downsized.

Furthermore, an introduction flow for introducing at least part of the traveling wind introduced from the air introduction opening 12 into the second heat exchanger (intercooler 10) in front of the second heat exchanger (intercooler 10). A path 18 is provided (see FIG. 4).
According to this configuration, since the traveling wind introduced from the air introduction opening 12 can be positively secured from the region that does not flow into the first heat exchanger (see the radiator 9), air introduction is possible. The traveling wind introduced from the opening 12 can be used without exception, and the cooling effect of both heat exchangers (the radiator 9 and the intercooler 10) can be enhanced.

In addition, the second heat exchanger (see the intercooler 10) is disposed with a predetermined inclination so as to face upward of the vehicle body (see FIG. 4).
According to this configuration, the second heat exchanger (see the intercooler 10) is opposed to the outlet 19A of the outlet channel 19, so that the flow velocity loss of the traveling wind is reduced, and the second heat exchanger (intercooler). 10) can be enhanced.

In addition, the second heat exchanger (see the intercooler 10) is arranged so that the outer front end thereof is more forward than the inner front end so as to face the air introduction opening 12 (specifically, the air introduction portion 16). (See FIG. 3).
According to this configuration, since the second heat exchanger (see the intercooler 10) faces the inlet of the introduction flow path 18, the cooling effect of the second heat exchanger (see the intercooler 10) can be enhanced. it can.

In addition, a bumper rain 8 that crosses between the bumper face 11 and the first heat exchanger (radiator 9) in the vehicle width direction and has a predetermined vertical width, and a front surface of the bumper rain 8 are arranged. A bumper rain cover 15 that covers the air introduction opening 12 in the vehicle width direction and that is disposed so as to form a continuous surface with the surface of the bumper face 11. In part of the boundary α with the bumper face 11, an air introduction part 16 for introducing traveling wind into the inside of the front part of the vehicle body (see the engine room 2) is provided, and the introduction flow path 18 serves as the air introduction part 16. (See FIG. 2).
According to this configuration, the second heat exchanger (see the intercooler 10) can be cooled without using the traveling air that cools the first heat exchanger (see the radiator 9).

Furthermore, the air introduction part 16 is formed in the bumper rain cover 15 and the introduction flow path 18 is continuously formed from the air introduction part 16 toward the second heat exchanger (see the intercooler 10). (See FIGS. 3 and 4).
According to this configuration, it is possible to reduce the number of parts and the number of positioning steps and assembly steps.

The bumper face 11 is provided with a mounting hole 30 for attaching the fog lamp 29 so as not to overlap the second heat exchanger (see the intercooler 10, preferably the intercooler 10 and the introduction flow path 18) when viewed from the front of the vehicle body. (See FIGS. 1 and 7).
According to this configuration, the second heat exchanger (see the intercooler 10) is not damaged even if the fog lamp 29 moves backward during a vehicle front collision. In addition, when the heat exchanger (intercooler 10) is arranged so that the area occupied by the second heat exchanger (see the intercooler 10) is reduced when viewed from the front of the vehicle body, the degree of freedom of the fog lamp 29 mounting position is improved. be able to.

In the correspondence between the configuration of the present invention and the above-described embodiment,
The first heat exchanger of the present invention corresponds to the radiator 9 of the embodiment,
Similarly,
The second heat exchanger corresponds to the intercooler 10,
Front bumper face corresponds to bumper face 11,
Front bumper rain corresponds to bumper rain 8,
The boundary corresponds to the continuous surface boundary α on the left side of the vehicle,
The present invention is not limited to the configuration of the above-described embodiment.
For example, in the above embodiment, the intercooler 10 as the second heat exchanger is arranged on the left side of the vehicle and the air introduction part 16 is provided on the continuous surface boundary α on the left side of the vehicle, but the intercooler 10 is arranged on the right side of the vehicle. In this case, the air introduction part 16 may be provided at the continuous surface boundary β on the right side of the vehicle.

Front view of a vehicle having a heat exchanger arrangement structure at the front of the vehicle body 1 is a schematic plan view taken along line AA in FIG. The main part enlarged plan view of FIG. The enlarged side view of the principal part in alignment with the BB line of FIG. A perspective view showing the front part of the vehicle body viewed from diagonally below A perspective view showing the front part of the vehicle body viewed from diagonally above Front view showing another embodiment of the fog lamp mounting position Side view showing another embodiment of the restricting portion provided on the bumper rain cover Side view showing still another embodiment of the restricting portion provided on the bumper rain cover Main part enlarged plan view showing an embodiment adopting an introduction flow path having a closed section structure Side view showing front and rear division structure of introduction channel The top view which shows the other Example of the recessed part of a bumper rain cover

Explanation of symbols

4 ... Front wheel 5 ... Wheel house 8 ... Bumper rain (front bumper rain)
9 ... Radiator (first heat exchanger)
10 ... Intercooler (second heat exchanger)
11 ... Bumper face (front bumper face)
DESCRIPTION OF SYMBOLS 12 ... Air introduction opening 15 ... Bumper rain cover 16 ... Air introduction part 18 ... Introduction flow path 19 ... Outlet flow path 19A ... Outlet 29 ... Fog lamp 30 ... Mounting hole alpha ... Continuous surface boundary (boundary)

Claims (7)

A front bumper face that forms an outer surface of the front portion of the vehicle body and that has an air introduction opening for introducing running air into the vehicle body is provided, and a first heat exchanger is disposed behind the air introduction opening of the front bumper face. A heat exchanger disposition structure at the front of the vehicle body, wherein the second heat exchanger is disposed between the air introduction opening and the wheel house accommodating the front wheel,
Of the traveling wind introduced from the air introduction opening into the front portion of the vehicle body, a lead-out flow path for leading the traveling wind that has passed through the second heat exchanger is provided in front of the wheel house,
A heat exchanger arrangement structure for the front part of the vehicle body, wherein the outlet of the outlet channel is formed facing the lower part of the front part of the vehicle body. The vehicle body according to claim 1, wherein an introduction flow path for introducing at least a part of the traveling wind introduced from the air introduction opening into the second heat exchanger is provided in front of the second heat exchanger. Front heat exchanger arrangement structure. The heat exchanger disposition structure at the front of the vehicle body according to claim 1 or 2, wherein the second heat exchanger is disposed with a predetermined inclination so as to face upward of the vehicle body. The vehicle body front according to any one of claims 1 to 3, wherein the second heat exchanger is disposed such that an outer front end portion thereof is in front of the vehicle with respect to an inner front end portion so as to face the air introduction opening. Heat exchanger arrangement structure. A front bumper rain disposed between the front bumper face and the first heat exchanger in the vehicle width direction and having a predetermined vertical width;
A bumper rain cover that covers the front surface of the front bumper rain and traverses the air introduction opening in the vehicle width direction and is arranged to form a continuous surface with the surface of the front bumper face;
In part of the boundary between the bumper rain cover and the front bumper face, there is provided an air introduction part for introducing running wind into the front part of the vehicle body,
The heat exchanger disposition structure at the front of the vehicle body according to any one of claims 2 to 5, wherein the introduction flow path is connected to the air introduction portion. 6. The heat of the front part of the vehicle body according to claim 5, wherein the air introduction part is formed in the bumper rain cover, and the introduction flow path is continuously formed from the air introduction part toward the second heat exchanger. Exchanger arrangement structure. The heat exchanger for the front part of the vehicle body according to any one of claims 1 to 6, wherein a mounting hole for attaching a fog lamp is formed in the front bumper face so as not to overlap with the second heat exchanger in a front view of the vehicle body. Arrangement structure.

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