JPH08216702A - Air intake structure of engine for automobile - Google Patents

Abstract

PURPOSE: To provide the air intake structure of an engine for an automobile, by which the length of an intake pipe to the engine can be reduced. CONSTITUTION: In the air intake structure of an engine for an automobile, wherein an extension panel 18 disposed in a gap part between a side frame and a floor panel and an intake pipe for taking air in an engine provided on the lower surface of the floor panel is piped on the lower surface of the floor panel, the forward end flange part 10a and both side flange parts 10b of the extension panel 10 are made closely adhere to the lower surface side of the floor panel 3, whereby the inside of the side frame 1 is partitioned by the extension panel 10. An intake pipe 13 of the engine is passed through the side wall 10d of the extension panel 10 to be opened to the inside of the extension panel 10, and at least the base of the extension panel 10 is provided with a drain hole communicating with the inside of the side frame 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air intake structure for an automobile engine capable of reducing the length of an intake pipe to the engine.

[0002]

2. Description of the Related Art As shown in FIG. 7, in some so-called cab-over type automobiles such as one-box type automobiles, an engine 101 is arranged behind a vehicle body 100.

In such an automobile, conventionally, as shown in FIG. 8, in order to introduce air into the engine 101, the intake port 103 of the engine intake pipe 102 is provided on the side surface 104 of the door opening of the vehicle body 100. ing. Therefore, as shown in FIGS. 9 and 10, the engine intake pipe 102 is guided downward through the space between the outer panel 105 and the rocker panel 106 of the vehicle body 100, and the floor panel 10 is opened through the opening hole 107 formed in the rocker panel 106.
8 is connected to an air cleaner (not shown) provided on the lower side of the engine 8 and provided on the engine 101 side.

However, in this type of automobile, in general,
Since the frame structure is adopted as the basic structure of the vehicle body 100, the side frame 109 is arranged on the lower side of the floor panel 108. For this reason, the engine intake pipe 102 is arranged to penetrate the side surface of the side frame 109 and be piped to the engine 101 side. in this case,
Since the extension panel 110 that closes the gap between the side frame 109 and the floor panel 108 is provided in the portion where the engine intake pipe 102 is piped,
The engine intake pipe 102 was piped below the extension panel 110.

[0005]

Therefore, conventionally, the length of the engine intake pipe 102 becomes long, the piping work is difficult, and the cost is increased. In addition, it is not preferable to open an opening for penetrating the side frame 109 because the rigidity of the side frame 109 is lowered.

An object of the present invention is to solve the above problems and to provide an air intake structure for an automobile engine which can shorten the length of an intake pipe to the engine.

[0007]

In order to solve the above problems, the present invention provides a floor panel on the upper surface of a side frame having an open upper portion, and an extension panel is provided in a gap between the side frame and the floor panel. In an air intake structure for an automobile engine, in which an intake pipe for introducing air into the engine provided on the lower surface of the floor panel is connected to the lower surface of the floor panel,
The front end flange portion and both side flange portions of the extension panel are closely attached to the lower surface side of the floor panel to partition the inside of the side frame by the extension panel, and the intake pipe of the engine is passed through the side wall of the extension panel. This is because a water drain hole that opens inside the extension panel and communicates with the inside of the side frame is provided at least on the bottom surface of the extension panel.

[0008]

[Operation] Air is introduced from the intake pipe opened inside the extension panel to be sucked into the engine side. Since the inside of the extension panel is partitioned from the inside of the side frame, there is no possibility that rainwater or the like that has entered the inside of the side frame will enter the inside of the extension panel during traveling. Since rainwater or the like that has entered the inside of the extension panel is discharged to the inside of the side frame through the water drain hole, there is no risk that rainwater or the like will enter the intake pipe through the opening of the intake pipe.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIGS. 1 to 6, 1 is a side frame constituting a vehicle body 2, 3 is a floor panel disposed on the side frame 1, and both sides of the floor panel 3 are welded to a side panel 4 of the vehicle body 2. Has been done. The side panel 4 is composed of an outer panel 5 and a rocker panel 6, and constitutes a side portion of the vehicle body 2.

The side frame 1 is formed by connecting a plurality of cross members 9 to a frame 8 having a U-shaped cross section with an opening 7 at the top. Frame 8 of this side frame 1
A curved portion 8a is provided on the way, and an extension panel 10 is arranged in a gap portion 9 formed between the curved portion 8a and the floor panel 3.

This extension panel 10 is shown in FIG.
As shown in FIG. 5A and FIG. 5B, it is a long extension member having an open upper portion, and is provided with outwardly bent flange portions 10a and 10b at its tip and both sides.
It is closely attached to the lower surface side of the floor panel 3 via a and 10b. At the rear end of the extension panel 10, a gap 11 is provided between the extension panel 10 and the floor panel 3, and the interior of the extension panel 10 communicates with the frame 8 of the side frame 1 through the gap 11.

The bottom surface 10c of the extension panel 10
A water drainage hole 12 is provided in the water drainage hole 12, and the water is drained into the frame 8 of the side frame 1 through the water drainage hole 12. The bottom surface 8b of the frame 8 of the side frame 1 is also provided with drainage holes 8c and 8d at predetermined locations.

Reference numeral 13 is an intake pipe of the engine 14 opened in the extension panel 10.
As shown in FIG. 6, 3 is attached to the side wall 10d of the extension panel 10 via a mounting flange portion 15. A mounting hole 16 is formed in the mounting flange portion 15, and a cylindrical collar 17 is internally provided in the mounting hole 16.
A bolt 18 is inserted into the collar 17 and a welding nut 19 is screwed to fix the mounting flange portion 15 to the extension panel 10. Reference numeral 20 is a seal sponge interposed between the mounting flange portion 15 and the extension panel 10.

According to the above structure, the air in the extension panel 10 is sucked into the engine 14 via the intake pipe 13 opened in the extension panel 10. Air is introduced into the extension panel 10 through the gap 11 and the water drain hole 12. On the other hand, since rainwater and the like flowing into the frame 8 of the side frame 1 is partitioned by the extension panel 10 in the frame 8, there is little risk that rainwater or the like will enter the extension panel 10, and in the unlikely event that there is a gap on the rear side. Rainwater and the like that have entered the extension panel 10 from 11 and the like also fall into the frame 8 of the side frame 1 from the water drain hole 12, and therefore are not sucked from the intake pipe 13 to the engine 14 side. Also, the frame 8 of the side frame 1
Even if rainwater or the like flowing in flows through the frame 8 due to inertial force, it is discharged to the outside through the water drain holes 8c and 8d,
It is extremely unlikely that rainwater will enter the extension panel 10.

According to the above structure, the air in the extension panel 10 is supplied to the engine 14 via the intake pipe 13.
Since the intake air is taken in, the intake pipe 13 can be taken in near the engine 14 and at a low position, so that the length of the intake pipe 13 can be shortened as compared with the conventional one. Further, since the inside of the frame 8 is partitioned by the extension panel 10, there is no fear that rainwater or the like will enter the inside of the extension panel 10. Further, rainwater and the like that have entered the extension panel 10 also fall into the frame 8 of the side frame 1 from the water drain hole 12, and therefore are not sucked from the intake pipe 13 to the engine 14 side.

The present invention is not limited to the above embodiment, and for example, the shape of the extension panel 10 includes the gap portion 9 formed between the curved portion 8a of the frame 8 of the side frame 1 and the floor panel 3. As long as it is a container shape that closes, it does not have to be a long extension member having an open upper part like the embodiment, and it can be appropriately modified and implemented within a range not changing the gist of the present invention. Needless to say.

[0018]

As described above, according to the air intake structure for an automobile engine according to the present invention, the floor panel is disposed on the upper surface of the side frame having the upper opening, and the gap between the side frame and the floor panel is provided. In an air intake structure for an automobile engine, in which an extension panel is provided on the floor panel, and an intake pipe for introducing air into the engine provided on the lower surface of the floor panel is connected to the lower surface of the floor panel, a tip flange of the extension panel is provided. Section and both side flanges are closely attached to the lower surface side of the floor panel to partition the inside of the side frame by the extension panel, and the intake pipe of the engine is opened through the side wall of the extension panel to the inside of the extension panel. The extension panel Is provided with the water drainage hole communicating with the inside of the side frame to at least the bottom surface of, since the engine air inlet can be placed in a low position near the engine,
Cost can be reduced by shortening the length of the intake pipe.

[Brief description of drawings]

FIG. 1 is a perspective view showing an arrangement structure of an automobile body, a side frame, and an engine.

FIG. 2 is a perspective view of the air intake structure for an automobile engine according to the present invention in the direction of arrow A in FIG.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a sectional view taken along line BB in FIG.

5 is an enlarged cross-sectional view taken along the line AA of FIG.

6 is an enlarged cross-sectional view taken along the line BB of FIG.

FIG. 7 is a conceptual diagram showing a conventional air intake structure for an automobile engine.

FIG. 8 is a partially enlarged perspective view of FIG. 7;

9 is a perspective view showing an air intake structure of a conventional automobile engine in the same portion as the direction of arrow A in FIG.

10 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

 1 side frame 2 vehicle body 3 floor panel 4 side panel 5 outer panel 6 rocker panel 7 opening 8 frame 9 gap part 10 extension panel 11 gap 12 drain hole 13 intake pipe 14 engine 15 mounting flange part 16 mounting hole 17 color 18 bolt 19 welding nut 20 Seal sponge 10a, 10b Flange part

Claims (1)

[Claims] 1. A floor panel is disposed on an upper surface of a side frame having an opening at an upper portion, an extension panel is provided in a gap portion between the side frame and the floor panel, and air is taken into an engine provided on a lower surface of the floor panel. In an air intake structure for an automobile engine in which an intake pipe for connecting the bottom panel to the bottom surface of the floor panel is attached, the front end flange portion and both side flange portions of the extension panel are closely attached to the bottom surface side of the floor panel, Is defined by the extension panel, and the intake pipe of the engine is opened through the side wall of the extension panel to the inside of the extension panel, and at least the bottom surface of the extension panel has a drain hole communicating with the inside of the side frame. Established Air intake structure for automobile engines.