JPH1067340A - Cooling structure using enginehood for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the whole height of an enginehood, lead air to an air duct completely, and surely guide it from the air duct to a part to be cooled. SOLUTION: This cooling structure, which is constituted so that an engine compartment 18 may be cooled by using a space 14 to an enginehood 10, which is made from an outer panel 12 and an inner panel 16 disposed with the space 14 left downward from the outer panel 12, as an air duct, and is provided with a first air intake guide 28 and a second air intake guide 30. When the enginehood 10 is in a closed position, the upper end 29 of the first guide 28 is inserted in an air inlet 20 on the front side of the air duct, and the upper end 31 of the second guide 30 is inserted in an air spit hole 22 on the rear side of the air duct.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for cooling an engine room by using an interval of an engine hood comprising an outer panel and an inner panel spaced downward from the outer panel as an air duct.

[0002]

2. Description of the Related Art The interval of an engine hood consisting of an outer panel and an inner panel arranged at a distance downward from the outer panel is defined as an air duct, and an air intake in front of the air duct and an air outlet in the rear are respectively provided. A cooling structure provided with a guide seal has been proposed (Japanese Utility Model Laid-Open No. 2-109722).

[0003]

In the cooling structure according to the above proposal, a guide seal having a deflection allowance for guiding air to the air duct is used, and the height of the entire engine hood is increased by the amount of the guide seal. Is high.

An object of the present invention is to utilize an engine hood for an automobile, which can reduce the overall height of the engine hood, and can surely guide air to an air duct and also from the air duct to a portion to be cooled. To provide a cooling structure.

[0005]

According to the present invention, there is provided a structure for cooling an engine room by using an interval of an engine hood comprising an outer panel and an inner panel spaced downward from the outer panel as an air duct. And a first air guide plate and a second air guide plate. When the engine hood is in the closed position, the upper end of the first air guide plate is inserted into an air intake in front of the air duct, and the upper end of the second air guide plate is connected to the air duct. Into the air outlet behind.

[0006]

When the vehicle runs, the air hitting the first baffle is guided from the upper end of the first baffle to the air intake and enters the air duct. The air that has entered the air duct hits the upper end of the second baffle plate at the air outlet, and is guided to the portion to be cooled along the second baffle plate.

Since there is no guide seal having a deflection allowance, the clearance between the engine hood and the portion to be cooled can be reduced accordingly. This makes it possible to reduce the overall height of the engine hood.

When the engine hood is in the closed position, the upper end of the first air guide plate is inserted into the front air intake, so that the air can be reliably guided to the air duct. When the engine hood is in the closed position,
The upper end of the air guide plate is inserted into the rear air outlet, so that the air sent to the air duct can be reliably guided to the portion to be cooled.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The engine hood comprises an outer panel and an inner panel disposed at a distance of 10 to 30 mm downward from the outer panel. The spacing is used as an air duct. The air duct does not need to cover the entire width of the engine hood in the vehicle width direction, and the width can be determined according to the portion to be cooled. Two separate ribs are formed between the outer panel and the inner panel and extend in the longitudinal direction of the vehicle. The space defined by these ribs, the outer panel and the inner panel is used as an air duct, or the inner panel extends in the longitudinal direction of the vehicle. Two inverted U-shaped reinforcing portions are provided, and a space defined by these reinforcing portions, the outer panel, and the inner panel can be used as an air duct.

An air inlet is provided in front of the air duct, and an air outlet is provided in the rear. The air inlet is supplied with air from a grill disposed in front of the air inlet and attached to the vehicle body. It is preferable that a part of the grill is projected obliquely upward and used as a first air guide plate. The upper end of the first air guide plate is inserted into the air intake when the engine hood is in the closed position. The length of said end inserted into the air intake can be determined between 5 and 15 mm. The first air guide plate is formed in a groove shape surrounded by three pieces, and is positioned so that air can easily enter the groove. On the other hand, the second air guide plate is formed by bending a plate material and forming a groove surrounded by three pieces.
It is preferable to adopt a form in which the side piece is longer in the front-rear direction as it goes down so that the horizontal cross-sectional area of the groove becomes larger as it goes down to a location. The second air guide plate is positioned so that air can easily enter the groove. The upper end of the second air guide plate is inserted into the air outlet of the air duct when the engine hood is in the closed position. The length of the end inserted into the air outlet can be determined to be 5 to 15 mm. Preferably, a guide plate for guiding air flowing through the air duct to the second air guide plate is attached to an outer panel of the engine hood. In this case, the guide plate is positioned in front of an end of the second air guide plate, and The plate and the end of the second air guide plate are overlapped in the front-rear direction.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, which shows a cross section taken along a virtual vertical plane extending in the front-rear direction of a vehicle body, an engine hood 10 of an automobile has an outer panel 12 and an inner panel disposed at a distance 14 downward from the outer panel 12. 16. The interval is used as an air duct.
When in the closed position, the engine room 18 is covered. As is known per se, the engine hood 10 is pivotally mounted (not shown) so that it can assume a closed position as shown and an open position where the front end opens upward and stays in place. ).

The air duct 14 formed by the space
Has an air inlet 20 at the front and an air outlet 22 at the rear. Although the air inlet 20 is located near the grill 24 on the vehicle body side, the air outlet 22 can be set at an appropriate position according to the portion 26 to be cooled. In the illustrated embodiment, the portion to be cooled 26
Is the engine exhaust manifold.

The cooling structure includes a first air guide plate 28 and a second air guide plate 30 in addition to the air duct 14. When the engine hood 10 is in the closed position, the first air guide plate 28 is connected to the air intake 20 in front of the air duct 14.
The upper end 29 is inserted into the second air guide plate 3
0 has an upper end 31 that is inserted into the air outlet 22 behind the air duct 14 when the engine hood 10 is in the closed position.

In the embodiment shown in FIGS. 1 and 2, the air duct 14 is made of a different material from the outer panel and the inner panel, and is mounted between the outer panel 12 and the inner panel 16 so as to extend in the longitudinal direction of the vehicle body. The two ribs 32, the outer panel 12, and the inner panel 16
It is a space defined by An air intake 20 is provided in front of the air duct 14, and two reinforcing plates 34 surround the air intake 20 on both sides.

As shown in detail in FIG. 2, the first air guide plate 28 includes an intermediate control plate 37 among three control plates 36, 37, 38 spaced above and below the grill 24.
From the bottom piece 40, 2
It has a groove shape having two side pieces 41. Side piece 4
0 is formed in a substantially triangular shape so that the length in the front-rear direction becomes longer toward the upper side. First air guide plate 28
Are arranged such that the two side pieces 41 are located forward of the bottom piece 40.

As shown in detail in FIG. 3, the second air guide plate 30 is a groove having a bottom piece 42 and two side pieces 43. The bottom piece 42 is formed by slightly bending the upper end thereof forward. The side piece 43 is formed so that the length in the front-rear direction becomes longer as it goes down to the middle in the up-down direction, and is substantially the same from the middle to the lower end. The second baffle plate 30 is arranged such that the two side pieces 43 are located forward of the bottom piece 42 and the bolts 44
Is inserted into the through hole 46 of the bottom piece 42 and screwed into a nut (not shown) of the dash cross member 48 to be attached to the dash panel 50.

A guide plate 52 is attached to the outer panel 12 so as to face the air outlet 32 of the air duct 14. The guide plate 52 is preferably curved, as shown in FIG. 1, but it can also be flat. The width of the guide plate 52 in the vehicle width direction is the second
Is substantially the same as the width of the bottom piece 42 of the air guide plate 30. As shown in detail in FIG. 4, the guide plate 52 is dimensioned so as to be in front of the second baffle plate 30 and to have an overlap margin O overlapping the second baffle plate 30 in the front-rear direction.

The cooling structure functions as follows. When the vehicle runs, the control plates 36, 37, 3
The air that has passed through eight spaces flows backward. When the air flowing along the control plate 37 hits the first baffle 28, the air is turned upward and the upper end 29 of the first baffle 28 is turned upside down.
From the air inlet 20 and enters the air duct 14.
The air that has entered the air duct 14 is turned downward along the guide plate 52, and the second air guide plate 3 is
It hits the upper end 31 of the zero and is guided to the cooled part 26 along the second air guide plate 30. Therefore, the flow of the air from the grill 24 to the cooled portion 26 bypasses the intermediate obstacle as indicated by the arrow in FIG. 1, so that the cooled portion 26 is sufficiently cooled.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an embodiment of a cooling structure using an engine hood of an automobile according to the present invention, taken along a virtual vertical plane extending in a vehicle longitudinal direction.

FIG. 2 is a perspective view showing a first air guide plate and an air intake of an air duct.

FIG. 3 is a perspective view showing a second air guide plate and a mounting portion on a vehicle body side.

FIG. 4 is an enlarged sectional view showing a second air guide plate and a guide plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Engine hood 12 Outer panel 14 Air duct (interval) 16 Inner panel 18 Engine room 20 Air intake 22 Air outlet 24 Grill 26 Cooled part 28 First air guide plate 29 Upper end 30 Second air guide plate 31 Upper end 52 Guide plate

Claims (1)

[Claims] 1. An engine hood comprising an outer panel and an inner panel disposed at a distance downward from the outer panel is used as an air duct.
A structure for cooling an engine room, comprising: a first air guide plate having an upper end inserted into an air intake in front of the air duct when the engine hood is in a closed position; A second air guide plate having an upper end inserted into the air outlet, the cooling structure using an engine hood of the automobile.