JP2016050497A - Air intake port arrangement structure for automobile air intake system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air intake port arrangement structure for an automobile air intake system that is less likely to suck water from an air cleaner even when traveling on a flooded road, and does not cause a problem of air intake noise by a simple and low-cost structure.SOLUTION: In the structure for arranging an air intake port 13a of an air system 9 for taking air into an engine of an automobile including a closed cross sectional member 8 that defines a closed cross section and extends in a vehicle width direction, the air intake port 13a to the air cleaner 10 is opened in the closed cross sectional member 8 positioned higher than at least a low place part of a side member 2a.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an arrangement structure of an intake port to an air cleaner of an intake device that supplies air to an engine in an automobile such as a cab-over vehicle.

  In cab-over vehicles such as trucks, it is known that the air inlet to the air cleaner is set at the kick-up part of the side member.When a vehicle with this structure is run on a submerged channel, water enters the side member. It flows in and enters the air cleaner from the intake port, which may cause engine malfunction.

  As a conventional structure that solves this problem, a long intake duct is arranged on the back of the cabin in the vertical direction, and a rain cap is put on the upper intake of the intake duct, so that the intake of the air cleaner is placed at a high position. When the intake structure is formed in the pillar outer (for example, refer to Patent Document 1), an intake passage is formed in the pillar outer, and a communication pipe is connected to the pillar inner, a cover member and an intake guide plate are arranged in the pillar. There is a provided structure (for example, see Patent Document 2).

Japanese Utility Model Publication No. 3-82627 Japanese Utility Model Publication No. 62-184030

  The structure of Patent Document 1 has a problem that the structure is complicated and the cost is increased due to the necessity of a long intake duct and rain cap, and the appearance is further deteriorated.

  Moreover, in the structure of the said patent document 2, in order to prevent water entering from the downward direction, the complicated structure which consists of a cover member and a guide member is required, and also since the air of the vehicle interior side is sucked in, it is said that an intake sound is loud There's a problem.

  The present invention has been made in view of the above-described conventional situation, and has a simple and low-cost structure, so that it is difficult for water to be sucked into an air cleaner even when traveling in a submerged channel, and the problem of intake noise does not occur. It is an object of the present invention to provide an intake port arrangement structure for an intake device.

In the intake port arrangement structure of an automobile air intake device having a closed cross-section member extending in the vehicle width direction, the present invention has a closed cross-section member positioned higher than at least a low portion of the side member. It is characterized by opening an air inlet to the air cleaner.

  According to the present invention, the intake port is opened in the closed cross-section member that is positioned higher than the side member and extends in the vehicle width direction. Since it extends in the orthogonal direction, it is difficult for water to enter the closed cross-section member, and therefore water can be prevented from entering the intake port of the air cleaner. Incidentally, in the case of a closed cross-section member extending in the vehicle longitudinal direction, the closed cross-section member extends in the direction of water flow, so that water can easily enter the closed cross-section member, and as a result, the water enters the engine via the air cleaner. Intrusion causes engine malfunction.

  Further, since the intake port is opened in the closed cross-section member, the intake sound does not enter the room, and the problem that the intake sound is noisy does not occur.

  In addition, the above-described effect can be obtained by a structure in which the intake port is simply opened in the closed cross-section member. Therefore, the structure is simple, the cost is low, and the appearance is not deteriorated.

It is a side view of the small truck provided with the inlet arrangement structure concerning Example 1 of the present invention. It is a cross-sectional side view of the intake port arrangement structure. FIG. 3 is a plan view of an intake device having the intake port arrangement structure. It is a cross-sectional side view of the intake port arrangement structure. It is a cross-sectional rear view of the intake port arrangement structure.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIGS. 1 to 5 are views for explaining an intake port arrangement structure of an automobile intake device according to Embodiment 1 of the present invention.

  In the figure, reference numeral 1 denotes a small truck having an inlet arrangement structure according to Embodiment 1 of the present invention. The small truck 1 has a schematic structure in which a vehicle compartment 3 is mounted on a front portion of a vehicle body frame 2 and a cargo box 4 is mounted on a rear portion. In addition, 14a is a front wheel and 14b is a rear wheel.

  The vehicle body frame 2 is a so-called ladder type frame in which a pair of left and right side members 2a, 2a are coupled by a plurality of cross members (not shown).

  The packing box 4 has a schematic structure in which side gates 4b and 4b are arranged on the left and right edges of the packing box floor 4a and a rear gate 4c is arranged on the rear edge so as to be opened and closed.

  The packing box floor 4a is obtained by fixing a floor panel 4e on a packing box frame 4d. The cargo box frame 4d has a plurality of cross frames 4f extending in the vehicle width direction, and the cross frames 4f form a closed cross section extending in the vehicle width direction with the floor panel 4e.

  The vehicle compartment 3 includes a floor panel 3a, a back panel 3b, left and right side panels 3c, a front panel 3d, and a roof panel 3e. A door opening 3f formed in the side panel 3c is opened and closed by the door 3g. Is done.

  A step 3h is formed at the rear of the floor panel 3a so as to be raised by one step, and a seat 7 including a seat cushion 7a, a seat back 7b, and a headrest 7c is mounted on the step 3h.

  Reference numeral 3i denotes a maintenance opening for the engine unit 5 described later, and the opening 3i can be opened and closed by a seat cushion 7a of the seat 7.

  A back window glass 15 is disposed at the center of the back panel 3b in the vehicle width direction, and a lower end 3b 'is connected to the floor panel 4e of the packing box 4. Further, the rear stage part 3k, which is the latter half part of the step part 3h, is connected to the connection part. Further, a reinforcing plate 6 having an L-shaped cross section and extending in the vehicle width direction is disposed on the rear stage portion 3k. One end 6a of the reinforcing plate 6 is connected to the lower end portion 3b 'of the back panel 3b. The ends 6b are fixed to the rear stage 3k by welding. Thereby, a closed cross-section member 8 extending in the vehicle width direction at a height higher than the side member 2a is configured.

  The engine unit 5 is mounted below the boundary between the passenger compartment 3 and the cargo box 4. The engine unit 5 includes an engine body 5a and a transmission 5b connected thereto.

  An intake device 9 is connected to the engine body 5a. The intake device 9 is interposed between an air cleaner 10 connected to an intake manifold 5c of the engine body 5a via a joint duct 10a, an intake duct 11 for introducing air into the air cleaner 10, and an intermediate portion of the intake duct 11. And a resonator 12 having an intake noise reduction function. The air cleaner 10 is disposed on the inner side in the vehicle width direction of the side member 2a, and the resonator 12 is disposed on the outer side. The intake duct 11 is bent from the rear side of the air cleaner 10 to the upper side of the side member 2a in the vehicle width direction. To the front of the vehicle.

  The upstream end opening 11 a of the intake duct 11 is connected to the intake pipe 13. The intake pipe 13 passes through the rear stage portion 3 k, and an intake port 13 a that is an upper end opening of the intake pipe 13 opens into the closed cross-section member 8. The intake pipe 13 is fixed to the rear stage portion 3k and eventually to the closed section member 8 by welding a flange portion 13b fixed thereto to the rear stage portion 3k.

  Further, the vehicle width direction outer end portion 6c of the reinforcing plate 6 and the vehicle width direction outer end portion 3k ′ of the rear stage portion 3k are fixed to the inner panel 3c ′ of the side panel 3c by welding. Furthermore, an outside air intake 6d is formed at the right end of the reinforcing plate 6 in the vehicle width direction so as to open toward the front of the vehicle. Although not shown, a wheel house of the front wheel 14a is arranged in front of the outside air intake 6d so as to cover the outside air intake 6d from the front.

  As described above, in the present embodiment, the intake port 13a is opened in the closed cross-section member 8 that is positioned higher than the side member 2a and extends in the vehicle width direction. Since water 8 extends in the vehicle width direction, that is, in a direction perpendicular to the water flow direction, it is difficult for water to enter the closed cross-section member 8, so that water enters the air cleaner 10 and thus the engine body 5 a from the intake port 13 a. Intrusion can be prevented. Further, since the outside air intake 6d is arranged at the right end portion in the vehicle width direction and the outside air intake 6d is configured to be covered with the wheel house, it is possible to more reliably prevent water from entering the closed cross-section member 8. .

  Further, since the intake port 13a is opened in the closed cross-section member 8, the intake sound does not enter the room, and the problem of the intake sound does not occur.

  Further, the above-described effect is realized by a simple structure in which the intake port 13a is opened in the closed cross-section member 8. The structure is simple, the cost is low, and there is no problem that the appearance is deteriorated.

  In the above-described embodiment, the intake port 13a is opened in the closed cross-section member 8 disposed at the lower rear end of the passenger compartment 3. However, the position of the intake port in the present invention is not limited to this. In short, it suffices if it is positioned higher than the side member 2a, has a closed cross-sectional structure, and opens in a member extending in the vehicle width direction. For example, an air inlet may be opened in the cross frame 4f constituting the packing box frame 4d of the packing box 4. In this case, an air inlet is arranged in the cross frame 4f located near the air cleaner 10 among the plurality of cross frames 4f.

1 Light truck (car)
2a Side member 8 Closed cross-section member 9 Air intake device 10 Air cleaner 13a Air intake port

Claims (1)

In the intake port arrangement structure of an automobile intake device that has a closed cross-section member that has a closed cross-section and extends in the vehicle width direction,
An intake port arrangement structure for an automobile intake device, wherein an intake port to an air cleaner is opened in the closed cross-section member positioned higher than at least a low part of a side member.

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