JPH11301287A - Suction air intake duct - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent foreign matter such as dusts from piling up inside an air intake port in a suction air intake duct vertically provided at a side of a vehicle between a cab and a load-carrying platform by providing air intake ports on a surface facing a rearward of the vehicle and on a surface facing to a space between the cab and the load-carrying platform, respectively. SOLUTION: When an external air 12 is suctioned to an engine through a suction air intake duct 1, the air 12 is suctioned from a space between the duct 1 and a hood 7 at a rearward of a rear panel 3 of the cab 2 by a first air intake port 5 of the duct 1 and suctioned from a space between the cab 2 and the hood 7 by a second air intake port 20. According to the structure, since the second air intake port 20 functions as a by-path even if the first air intake port 5 is blocked by the hood 7 covering the load-carrying platform, it can be prevented that an intake efficiency of the engine is decreased. Further, since the respective air intake ports 5, 20 do not suction an air from a side surface 9 facing to outside the vehicle, foreign matter can be prevented from piling up.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intake intake duct capable of preventing a decrease in intake efficiency of an engine.

[0002]

2. Description of the Related Art Generally, air required for driving an engine of a vehicle is taken in from an intake duct via an air cleaner, and an example of such an intake duct is shown in FIG.

[0003] The intake duct shown in FIG. 4 is an intake intake duct 1 formed in a chimney shape, and the intake intake duct 1 is provided at a lower rear portion of a rear panel 3 of a cab 2 such as a truck. And stands on the rear panel 3 of the cab 2.

[0004] The intake intake duct 1 is provided with an air inlet 5 for communicating an inner hole communicating from the air cleaner 4 to the upper end with the upper end closed, and an outside air side of the intake intake duct 1.

The air suction port 5 has a plurality of wing-shaped fins inclined upward with respect to a horizontal plane from the outside atmosphere side toward the inner hole of the intake intake duct 1. They are attached at substantially equal intervals with a gap.

However, when the air suction port 5 is provided on the surface of the intake intake duct 1 facing the rear of the vehicle, the air suction port 5 faces the top 7 or the like that covers the loading platform 6. When air is sucked into the engine through the air inlet 5, the top 7 may obstruct the air inlet 5 and reduce the intake efficiency of the engine.

For this reason, generally, the air suction port 5 is provided as shown in FIG.
As shown in FIG. 6, the intake intake duct 1 is provided not on the surface 8 facing the rear of the vehicle but on the side surface 9 facing the outside of the vehicle. Further, a fin 11 is attached to the air suction port 5 in the same manner as described above toward the inner hole 10 of the intake intake duct 1.

In this way, the air 12 necessary for driving the engine is sucked from the outside of the vehicle, so that the air intake port 5 is opened by the hood 7 covering the carrier 6 behind the rear panel 3 of the cab 2. As a result, it is possible to prevent the intake efficiency of the engine from being reduced.

[0009]

However, if the air intake port 5 is provided on the side surface 9 of the intake intake duct 1 facing the outside of the vehicle, foreign matter such as dust flowing from the front of the vehicle is sucked into the air intake port 5. As a result, dust and the like easily accumulate inside the air suction port, and it takes time to maintain the intake intake duct 1 periodically.

The present invention has been made in view of the above-mentioned circumstances, and provides an intake intake duct configured so as not to lower intake efficiency of an engine and to prevent accumulation of dust and the like inside an air intake port. It is intended for.

[0011]

SUMMARY OF THE INVENTION An intake intake duct according to the present invention is an intake intake duct which is located between a cab and a carrier and is provided on an air cleaner for supplying air to an engine of a vehicle. A first air suction port is provided on a surface facing the rear of the vehicle, and a second air suction port is provided on a surface facing a space between the cab and the carrier.

When external air is sucked into the engine via the intake intake duct, the air is sucked from the space between the hood behind the rear panel of the cab and the intake intake duct by the first air intake port of the intake intake duct. The air is sucked from the space between the hood behind the rear panel of the cab and the rear surface of the cab by the second air suction port.

Accordingly, even if the first air intake port is obstructed by a hood or the like that covers the cargo bed, the second air intake port functions as a bypass, thereby reducing the intake efficiency of the engine. The second air intake port can also prevent air from being sucked in between the hood behind the rear panel of the cab and the rear face of the cab, and the first air intake port and the second air intake port can both be directed to the outside of the vehicle. Since air is not sucked in, dust and other foreign matter that flows along the side of the vehicle and is sucked in is prevented from accumulating inside the air suction port, and as a result, time and effort for maintaining the intake intake duct regularly are reduced. Can be reduced.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 show an intake intake duct 1, in which parts denoted by the same reference numerals as those in FIGS. 4 to 6 represent the same parts.

The intake intake duct 1 is located slightly behind the rear panel 3 of the cab 2 on the vehicle, and extends upright and upward from the air cleaner.
And a louver 14 attached to the intake main body 13.

As shown in FIG. 3, the intake main body 13 has an inner hole 10 communicating with the air cleaner and has a substantially triangular horizontal cross-sectional shape, similar to the conventional intake intake duct 1. The surface 8 facing the rear of the nearby vehicle has an opening 15 as if partly cut away.

In the vicinity of the upper portion of the intake main body 13, an end 16 of the side surface 9 which is formed to be substantially larger than the upper portion of the intake main body 13 so as to cover the opening 15 and faces the outside of the vehicle, and an end of the side surface which faces the inside of the vehicle. Louver 14 with section 17
Is attached via bolts 18 at the end 16 of the side surface 9 facing the outside of the vehicle, and on the surface 8 of the louver 14 facing the rear of the vehicle, the outside air side of the intake intake duct 1 and the intake body 13 are connected. A first air suction port 5 communicating with the opening 15 and the inner hole 10 is provided.

The first air suction port 5 has a plurality of fins 11 in the form of blades which are inclined upward from a horizontal plane toward the inner hole 10 of the intake intake duct 1 from the outside atmosphere side, and each of which is vertically arranged. Are attached at substantially equal intervals with a predetermined gap.

The surface 19 of the intake body 13 facing the inside of the vehicle and the ends 17 of the side surfaces of the louver 14 facing the inside of the vehicle are alternately arranged so that the second air suction port 2 is formed.
0, and the second air inlet 20
Communicates with the outside air side of the intake intake duct 1 and the inner hole 10 of the intake body 13.

The operation of the embodiment of the present invention will be described below.

When the outside air 12 is sucked into the engine through the intake air intake duct 1, the air 12 flows through the first air intake port 5 of the intake air intake duct 1 to the top 7 behind the rear panel 3 of the cab 2 and the intake air intake. The air is sucked from the space between the ducts 1 and from the space between the hood 7 behind the rear panel 3 of the cab 2 and the rear surface of the cab 2 through the second air suction port 20.

For this reason, even if the first air inlet 5 is obstructed by the top 7 or the like covering the loading platform 6, the second air inlet 20 functions as a bypass, so that the intake efficiency of the engine is reduced. Further, the second air suction port 20 can suck the air between the hood 7 behind the rear panel 3 of the cab 2 and the rear face of the cab 2, and the first air suction port 5 and the second air suction port can be prevented. Side 9 with mouth 20 facing outside of vehicle
Since air is not sucked into the air intake port, dust and the like are prevented from accumulating inside the air suction port due to foreign matter such as dust flowing in the vehicle side portion and being sucked, and as a result, the intake intake duct 1 is periodically maintained. The labor can be reduced.

Incidentally, the intake intake duct 1 of the present invention.
Is not limited to only the above-described embodiment, and the method of connecting the intake body 13 and the louver 14 may be welding or fitting. It is needless to say that luggage loaded on the loading platform 6 may be used instead of the hood 7 of the loading platform 6, and that various changes may be made without departing from the spirit of the present invention.

[0025]

According to the intake intake duct of the present invention, even if the first air suction port is obstructed by a hood or the like covering the cargo bed, the second air suction port functions as a bypass. It is possible to prevent the intake efficiency of the engine from being reduced, and the second air intake port sucks air between the hood behind the rear panel of the cab and the rear surface of the cab, and the first air intake port and the second air intake port Does not inhale air from the side facing the outside of the vehicle, so that dust and other foreign substances flowing along the side of the vehicle are prevented from accumulating inside the air intake port. An excellent effect that the trouble of regularly maintaining the duct can be reduced can be achieved.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of an intake intake duct of the present invention.

FIG. 2 is a front view showing an embodiment of the intake intake duct of the present invention.

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

FIG. 4 is a side view when an example of a conventional intake duct is provided in a cab of a large vehicle.

FIG. 5 is a side view showing an example of a conventional intake intake duct.

FIG. 6 is a horizontal sectional view of the intake intake duct shown in FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Intake intake duct 2 Cab 4 Air cleaner 5 Air inlet 6 Packing board 8 side 12 Air 19 side 20 Air inlet

Claims (1)

[Claims] An air intake duct, which is located on a side of a vehicle between a cab and a carrier and is provided upright on an air cleaner that supplies air to an engine of the vehicle, wherein a first air intake duct is provided on a surface facing rearward of the vehicle. An intake intake duct having an opening and a second air inlet on a surface facing a space between the cab and the cargo bed.