JP2005029028A - Outside air intake structure for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an outside air intake structure for a vehicle with a favorable appearance, which is capable of securing a large flow passage cross section area. <P>SOLUTION: In the outside air intake structure, a central duct 9 is provided in the front end of the vehicle, and air W taken in from the central duct 9 is introduced to the vehicle inside through an air duct 39. The air duct 39 is formed of a closed section consisting of the outer panel 33 and the inner panel 35 of a hood 3. An outside air introduction part 41 is provided in the front end of the air duct 39, and the air W from the central duct 9 is introduced to the outside air introduction part 41. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an outside air intake structure for a vehicle, and more particularly to an outside air intake structure for a vehicle that takes air introduced from a front grille into an engine room or the like when the vehicle travels.

  Usually, an engine room is disposed in the front part of a vehicle such as an automobile, and a supercharger (supercharger), a turbocharger, or the like is provided in the engine room in order to increase engine output. Yes. In this supercharger, since fuel is sent to the engine together with compressed air, the temperature of the compressed air rises and expands to increase its volume.

  Therefore, many automobiles equipped with an engine with a supercharger are provided with an intercooler for the purpose of cooling the air and increasing the compression efficiency. And in order to improve the operating efficiency of an intercooler, cooling intercooler itself with external air is performed.

For example, an air duct device extending in the vehicle front-rear direction is attached to the lower portion of the hood, and an outside air introduction portion is provided at the front end of the air duct device. The intercooler is cooled by spraying on the cooler (see, for example, Patent Document 1).
JP-A-7-304326

  However, in the conventional outside air intake structure of the vehicle, an air duct device is disposed below the hood, and an engine and engine accessories are disposed below the air duct device.

  Therefore, when an air duct device is installed in a vehicle in which the distance between the engine or engine accessories and the hood is originally small, the height of the air duct device must be reduced. There was a problem that the road cross-sectional area became small.

  Moreover, since the external air introduction part provided at the front end of the air duct device is exposed to the outside of the vehicle, there is a problem that the appearance is not good.

  Accordingly, an object of the present invention is to provide a vehicle external air intake structure that can ensure a large air flow path cross-sectional area and has a good appearance.

  According to the first aspect of the present invention, in the external air intake structure for a vehicle, an external air intake is provided at the front end of the vehicle, and the air taken in from the external air intake is guided into the vehicle body through the air duct. The air duct is configured by a closed cross-sectional portion composed of a panel, and an outside air introduction portion is provided at the front end of the air duct, and air from the outside air inlet is introduced into the outside air introduction portion.

  The second aspect of the present invention is the vehicle outside air intake structure according to claim 1, wherein the outside air introduction portion extends from a front end of an air duct to a lower side in a state where the hood is opened, An opening portion through which the outside air introduction portion can be inserted is provided on the upper surface of the inlet.

  The third aspect of the present invention is the vehicle outside air intake structure according to claim 1 or 2, wherein a front grill is provided at a front end of the outside air inlet, and the outside air is disposed on a rear side of the front grill in a state where a hood is opened. The introduction part is arranged.

  According to a fourth aspect of the present invention, there is provided the outside air intake structure for a vehicle according to the third aspect, wherein a movable damper for supplying air to the outside air introducing portion is provided at the outside air inlet.

  The fifth aspect of the present invention is the vehicle outside air intake structure according to claim 4, wherein the movable damper is pivotally supported on the upper surface of the outside air intake port in a state where the movable damper is biased upward. Thus, the movable damper is configured to open and close the opening of the outside air intake.

  The sixth aspect of the present invention is the outside air intake structure for a vehicle according to any one of the first to fifth aspects, wherein an outside air blowing portion for discharging the air in the air duct is provided at a rear portion of the air duct, and the outside air is provided. The intercooler is arranged to face the lower side of the blowout part.

  According to the first aspect of the present invention, since the air duct is composed of a closed cross-sectional portion composed of the outer panel and the inner panel of the hood, the air duct is formed with a minimum layout space without reducing the space of the engine room. be able to. In addition, since the air duct is formed integrally with the hood, the number of parts can be reduced as compared with the case where the air duct is separated from the conventional one.

  According to the second aspect, since the outside air introduction portion of the air duct extends downward and the opening is provided on the upper surface of the outside air intake, the outside air intake and the outside air introduction portion can be reliably communicated with each other. . Also, if the hood is closed, the outside air introduction part is automatically inserted into the opening, while if the hood is opened, the outside air introduction part automatically comes out of the opening. Thus, the connection between the outside air inlet and the outside air introducing portion is automatically performed, which is very efficient.

  According to the third aspect, since the outside air introduction portion is arranged on the back side of the front grill, the outside air introduction portion is hidden by the front grill and is not exposed to the outside, so that appearance is improved.

  According to the fourth aspect, since the movable damper for guiding the air is provided at the outside air inlet, the air can be efficiently fed into the outside air introduction portion of the air duct.

  According to the fifth aspect of the present invention, since the opening of the outside air inlet is configured to be freely opened and closed by the movable damper, the movable damper can be effectively used as a lid for the opening.

  In the sixth aspect, since the intercooler faces the outside air blowing portion, the air can be efficiently cooled by blowing the air discharged from the outside air outlet toward the intercooler.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a cross-sectional view showing the inside of an engine room at the front portion of a vehicle to which an outside air intake structure according to an embodiment of the present invention is applied. FIG. 2 is a front view of FIG. In FIG. 2, the bumper fascia and the front grill are omitted in order to clarify the position of the duct and the like.

  As shown in FIG. 1, the upper portion of the engine room 1 is covered with a hood 3. An engine 5 is disposed below the hood 3, and is positioned at a height position between the engine 5 and the hood 3. The intercooler 7 is arranged.

  Further, as shown in FIG. 2, a central duct (outside air intake) 9 is disposed at the center in the vehicle width direction at the front end of the vehicle, and a condenser 11 and a radiator, which will be described later, are disposed on the left and right sides of the central duct 9. Side ducts 15 and 17 for sending traveling wind to 13 (see FIG. 1) are arranged. A lower duct 21 is disposed below the central duct 9 and the side ducts 15 and 17 via an energy absorbing material 19. These side ducts 15 and 17 and the lower duct 21 support shutters 23, 25, and 27 that pass or block the traveling wind so as to be freely opened and closed. As shown in FIG. 1, a bumper fascia 29 is disposed at the lower part of the front end of the vehicle. As described above, the bumper fascia 29 efficiently absorbs a collision load at the time of a vehicle collision. An energy absorbing material 19 is provided. Further, a fan 31 is rotatably supported on the rear side of the capacitor 11 and the radiator 13 and is configured to be rotated by a drive motor (not shown) so as to supply air to the engine 5.

  The hood 3 includes an outer panel 33 disposed on the upper side in a closed state, and an inner panel 35 disposed at a distance from the outer panel 33 with a space therebetween. The peripheral portions of both the panels 33 and 35 are joined to each other, whereby a closed cross-section portion 37 is formed between the outer panel 33 and the inner panel 35.

  The closed cross-section portion 37 is configured as an air duct 39 according to the present embodiment, the front end of the air duct 39 is configured as an outside air introduction portion 41 that is bent downward and extends, and the rear end is bent downward to be an interface. The outside air blowing portion 43 is directed to the cooler 7 side, and the front end of the outside air blowing portion 43 is arranged to face the intercooler 7. The outside air blowing portion 43 is provided in communication with the inside of the air duct 39, and the air W flowing through the air duct 39 is blown from the outside air blowing portion 43 toward the lower intercooler 7.

  As shown in FIG. 3, the outside air introduction portion 41 is an introduction port formed in a cylindrical shape in the inner panel 35 of the hood 3. The lower end 45 on the vehicle front side is high, and the lower end 47 on the vehicle rear side is It is formed so as to be lowered. Further, a front grill 49 is disposed at the front end of the central duct 9, and an opening 51 into which the outside air introduction part 41 of the air duct 39 is inserted is provided on the upper surface 53 of the central duct 9.

  Further, as shown in FIG. 3, a movable damper 55 is pivotally supported on the lower side of the upper surface 53 of the central duct 9 through a rotation shaft 56 so as to be freely opened and closed. Is energized. The movable damper 55 acts as a lid that opens and closes the opening 51 and also acts as a guide plate that guides the air W introduced from the front grille 49 to the outside air introduction part 41. When the hood 3 is closed, the outside air introduction part 41 of the air duct 39 is inserted into the opening 51, and the lower end 47 on the rear side of the outside air introduction part 41 hits the movable damper 55, and the movable damper 55 Is pushed downward. In this state, the movable damper 55 is inclined forward and obliquely downward, opening the opening 51 and acting as a guide for sending the air W from the front of the vehicle to the outside air introduction portion 41.

  FIG. 4 is a cross-sectional view in the engine room of the front portion of the vehicle to which the outside air intake structure according to the present embodiment is applied, and shows a state where the hood 3 is opened. As shown in the figure, the hood 3 is pivotally supported so as to be openable and closable around a rotation shaft 57 provided at the rear end. As described above, the lower part of the front end of the hood 3 is provided with the outside air introduction part 41 that protrudes downward. Therefore, when the hood 3 is opened, the outside air introduction part 41 is lifted upward and pushed into the outside air introduction part 41. The movable damper 55 that has been released is released, and the movable damper 55 is rotated upward by an urging means (not shown) to close the opening 51 as indicated by an arrow in the figure.

  The effect by the external air intake structure of this embodiment which has the said structure is demonstrated easily.

  As shown in FIG. 1, an outside air blowing portion 43 is formed at the rear end portion of the air duct 39, and the outside air blowing portion 43 is disposed facing the intercooler 7 in a state where the hood 3 is closed. By efficiently blowing the air W to the intercooler 7 through the air duct 39, the intercooler 7 can be efficiently cooled.

  In addition, the outdoor air introduction portion 41 is arranged at a position where the lower end 47 on the rear side is lower than the lower end 45 on the front side and is inclined obliquely upward and forward, so that the air W blown from the front is efficiently introduced into the outside air. It can be sent to the part 41.

  Furthermore, since the outside air introduction part 41 formed in the air duct 39 is extended downward, by inserting the outside air introduction part 41 into the opening 51 of the central duct 9, the movable damper 55 is pushed down to a predetermined level. The tilt angle can be maintained.

  Since the movable damper 55 is urged upward via an urging means (not shown), if the hood 3 is closed, the movable air damper 55 is rotated downward by the outside air introduction portion 41 while the hood 3 is opened. The opening 51 is automatically closed.

  The outside air intake structure for a vehicle according to the present invention is not limited to the above-described embodiment, and various changes and modifications can be made based on the technical idea of the present invention.

It is sectional drawing of the vehicle front part in the state which closed the hood which applied the external air intake structure by embodiment of this invention. It is a front view which shows roughly the vehicle front-end part which looked at FIG. 1 from the A direction. It is sectional drawing to which the central duct vicinity of FIG. 1 was expanded. It is sectional drawing of the vehicle front part in the state which opened the hood which applied the external air intake structure by embodiment of this invention.

Explanation of symbols

W ... Air 3 ... Hood 7 ... Intercooler 9 ... Central duct (outside air inlet)
DESCRIPTION OF SYMBOLS 33 ... Outer panel 35 ... Inner panel 37 ... Closed cross-section part 39 ... Air duct 41 ... Outside air introduction part 43 ... Outside air blowing part 49 ... Front grille 51 ... Opening part 53 ... Upper surface 55 ... Movable damper

Claims (6)

In the outside air intake structure for a vehicle, an outside air inlet (9) is provided at the front end of the vehicle, and air (W) taken from the outside air inlet (9) is guided to the inside of the vehicle body via an air duct (39).
The air duct (39) is composed of a closed cross section (37) composed of an outer panel (33) and an inner panel (35) of the hood (3), and an outside air introduction part (41) is provided at the front end of the air duct (39). And an outside air intake structure for a vehicle, wherein the outside air introduction part (41) is configured to introduce air (W) from the outside air inlet (9). While the outside air introduction part (41) extends downward from the front end of the air duct (39), the outside air introduction part (41) can be inserted into the upper surface (53) of the outside air inlet (9). 51. The outside air intake structure for a vehicle according to claim 1, wherein 51) is provided. The front grill (49) is provided at the front end of the outside air intake (9), and the outside air introduction part (41) is arranged on the back side of the front grill (49). Outside air intake structure for vehicles. The outside air intake structure for a vehicle according to claim 3, wherein a movable damper (55) for guiding air (W) to the outside air introduction part (41) is provided at the outside air inlet (9). The movable damper (55) is pivotally supported on the upper surface of the outside air intake (9) in a state of being biased upward, so that the outside air intake (9) is supported by the movable damper (55). The outside air intake structure for a vehicle according to claim 4, wherein the opening (51) of the vehicle is configured to be openable and closable. An outside air blowing part (43) for discharging the air (W) in the air duct (39) is provided at the rear end part of the air duct (39), and the intercooler (7) faces the outside air blowing part (43). The outside air intake structure for a vehicle according to any one of claims 1 to 5, wherein the outside air intake structure is arranged.

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