JP3114002B2 - Outside air introduction structure of cab-over type car - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outside air introduction structure for a cab-over type vehicle, and more particularly to an outside air introduction structure for supplying outside air to an engine mounted below a driver's seat through an air cleaner.

[0002]

2. Description of the Related Art As is well known, when supplying outside air (fresh air) to an automobile engine, it is not preferable that the outside air temperature is high in view of the charging efficiency and the like. The higher the outside air temperature is, the greater the loss of the intake air of the engine is. Therefore, in a conventional cab-over type automobile, for example, as shown in FIGS. 3 and 4, the intake port 2e of the intake duct 4e connected to the air cleaner 3 is connected to the radiator 1.
A means is provided in front of the intake port 2e to allow the outside air to be sucked from the intake port 2e.

However, if the intake port 2e of the intake duct 4e is simply disposed in front of the radiator 1, for example, as shown in FIG. 5, when traveling on a flooded road or a riverbed, the intake port 2e is not provided. Water easily enters the inside. This is because, even when the water depth L is lower than the intake port 2e, the water in front of the radiator 1 rises due to the water being pushed by the radiator 1, and the water depth La increases.

In view of the above, conventionally, an intake box 10 has been installed in consideration of a structure in which water does not easily enter the intake duct 4e, a water seal plate 11 is provided around the intake box 10, and an engine is disposed below the intake port 2e. By devising the shape of the under cover 12, the intake port 2
e was prevented from entering water.

[0005]

However, in the above-mentioned conventional means, parts dedicated to waterproofing, such as the intake box 10 and the water seal plate 11, are required, and these parts are expensive. Further, an extra cost for processing the engine undercover 12 into a predetermined shape is required. Therefore, there has been a problem that the entire manufacturing cost is considerably high.

The present invention has been devised in view of such circumstances, and requires special parts exclusively for waterproofing while taking care not to supply the outside air passing through the radiator to the engine. It is an object of the present invention to prevent water from easily entering the intake duct with a structure that can be manufactured easily and inexpensively.

[0007]

Means for Solving the Problems To solve the above problems, the present invention takes the following technical means.

That is, the invention of the present application is an outside air introduction structure for a cab-over type vehicle in which an intake duct having an intake port is connected to an air cleaner disposed behind a radiator. The radiator is mounted on a radiator support bracket for supporting the radiator on the vehicle body, and is sandwiched and fixed by both the radiator support bracket and an engine cover disposed above the radiator support bracket. Is characterized by being provided at a position rearward of the radiator on the outer surface of the intake duct and closer to the outside in the vehicle width direction than the radiator, and directed toward the outside of the vehicle body.

[0009]

In the outside air introduction structure for a cab-over type vehicle according to the present invention, the intake port for taking in outside air is provided behind the radiator in the outer surface of the intake duct, but the radiator is provided. Since it is located closer to the outside in the vehicle width direction and is directed toward the outside of the vehicle body, it is possible to reduce the risk that outside air that has passed through the radiator is directly taken in from the intake port. Therefore, fresh outside air that has not passed through the radiator can be supplied to the air cleaner via the intake duct, and problems such as a reduction in charging efficiency can be avoided.

On the other hand, since the intake port is disposed rearward of the radiator and is provided toward the outside of the vehicle body, the water volume in front of the radiator increases due to, for example, running on a flooded road. Even if such a phenomenon occurs, there is no possibility that water will immediately enter the intake port. Therefore, unlike the related art, as a means for preventing water from entering the air inlet, it is possible to eliminate the necessity of separately providing a waterproof part such as an air intake box and a water seal plate around the air inlet.

[0011] Further, the intake duct having the above-mentioned intake port,
The tip is mounted on a radiator support bracket that is usually provided to support the radiator, and is fixed by being sandwiched between both the radiator support bracket and the engine cover. In addition, no special additional parts need to be used for fixing the intake duct.

As described above, according to the present invention, it is possible to eliminate the fear that the outside air warmed by the radiator is supplied to the engine and the fear that the water intrudes into the intake port with a simpler configuration than in the prior art. The reduction in the number of parts and the simplification of the manufacturing work of each part provide a special effect that the manufacturing cost can be reduced.

Since the radiator support bracket on which the intake duct is supported has a certain strength required to support the radiator on the vehicle body, the radiator support bracket is effectively used to take the intake air. It is possible to secure the support of the duct. There is no instability in supporting and fixing the intake duct.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below.
This will be specifically described with reference to the drawings.

FIG. 1 is a schematic plan view of an essential part showing an example of the outside air introduction structure of a cab-over type vehicle according to the present invention, and FIG. 2 is a sectional view of the essential part taken along line XX.

In this outside air introduction structure, an air cleaner 3 for purifying air taken into the engine E is provided behind the radiator 1. The air cleaner 3 is connected to an intake duct 4 having an intake port 2.

The radiator 1 is arranged, for example, between wheel houses 5 and 5 for front wheels of an automobile. Between both side portions of the radiator 1 and the wheel houses 5 and 5, radiator support brackets 6 and 6 formed of a metal plate or the like are provided substantially horizontally along the vehicle width direction. Radiator support bracket 6,
6, the radiator 1 is supported and fixed. As means for connecting and fixing both ends of the radiator support brackets 6, 6 to the wheel houses 5, 5 and the radiator 1, welding or bolting means is employed.

The intake duct 4 is formed by a pipe made of metal or rubber. The distal end opening of the intake duct 4 is closed by, for example, attaching a cap 8 or a plug. The distal end 4a of the intake duct 4 is mounted on the upper part of the one radiator support bracket 6 described above. As shown in FIG. 2, this one radiator support bracket 6
A concave portion 60 is formed in the upper part of the upper surface of the air intake duct 4 so as to fit the front end portion 4a of the air intake duct 4, so that the air intake duct 4 is not inadvertently displaced in the vehicle width direction. An engine cover 7 is mounted above the front end 4a of the intake duct 4. The intake duct is formed by both the sponge 70 attached to the back of the engine cover 7 and the radiator support bracket 6. The front end portion 4a of the fourth member 4 is sandwiched and fixed.

The intake port 2 is provided on the outer surface of the intake duct 4 at a position behind the radiator 1 and at a position closer to the outside in the vehicle width direction than the radiator 1. The intake port 2 is provided with a radiator 1
It is provided so as to open toward the outside of the vehicle body on the opposite side of the vehicle. When the intake duct 4 is a metal pipe, the intake port 2 is formed at the tip of the pipe 20 by connecting a short pipe 20 to the duct 4 or the like.
On the other hand, when the intake duct 4 is made of rubber, a portion corresponding to the short pipe 20 can be formed integrally with the intake duct 4.

In the present embodiment, the above-mentioned intake duct 4 is provided between a place where a water pump and a V-belt 90 and a pulley 91 for an alternator provided at the front of the engine E are arranged. A cover 9 is provided for preventing water from jumping from the V-belt 90 to the intake port 2. The cover 9 is, for example, a frame 92
The cover 9
Is preferably designed so that the intake port 2 is located forward of the rear end of the cover 9. A sponge is appropriately attached to the service hole cover provided along the upper side of the cover 9.

In the outside air introduction structure for a cab-over type automobile having the above-described structure, the intake port 2 of the intake duct 4 is provided behind the radiator 1, but not behind the radiator 1 but rather than the radiator 1. It is arranged on the outer side in the vehicle width direction, and is directed toward the outer side of the vehicle body. Therefore, there is little possibility that the outside air warmed by passing through the radiator 1 is directly taken in from the intake port 2, and the outside air not heated by the radiator 1 can be supplied from the intake duct 4 to the air cleaner 3 side. The efficiency of charging the engine E with outside air can be improved.

Further, since the intake port 2 is disposed rearward of the vehicle body with respect to the radiator 1 and is directed to the outside of the vehicle body, there is less danger of water entering from the front side of the vehicle when the vehicle is running. can do. Moreover, even when a phenomenon such as an increase in the water volume in front of the radiator 1 occurs when traveling on a flooded road or the like, the water does not immediately enter the intake port 2. Therefore, it is not necessary to additionally provide a component for preventing water from entering around the intake port 2.

The intake port 2 is preferably provided at a position close to the wheel house 5. However, if the intake port 2 is too close, water traveling through the wheel house 5 tends to enter the intake port 2. Conversely, if the wheel house 5 is too far away from the wheel house 5, the water that the tire jumps up easily enters the intake port 2. Therefore, it is desired that the intake port 2 and the wheel house 5 are appropriately separated from each other.

In this embodiment, since the cover 9 is provided between the V-belt 90 and the intake port 2, the pulley 91 lands or immerses during high-water-depth travel.
Even if water is splashed up from the V-belt 1 or the V-belt 90, the water can be prevented from splashing toward the intake port 2 by the cover 9. Therefore, it is possible to more reliably prevent water from entering the intake port 2. In addition, the provision of the cover 9 has an effect that a situation in which the warm air passing through the radiator 1 flows toward the intake port 2 can be appropriately suppressed.

Further, the intake duct 4 is fixed by effectively utilizing a radiator support bracket 6 provided in advance to support the radiator 1 and an engine cover 7 disposed above the radiator support bracket 6. No special components are additionally employed to fix 4. Therefore, the number of components of the whole outside air suction mechanism described above can be reduced, and the manufacturing cost of these mechanisms can be reduced.

In the above embodiment, since the short pipe 20 is connected to the intake duct 4 and the intake port 2 is provided at the end of the pipe 20, the intake port 2 from the front of the automobile is provided.
The advantage is obtained that the intrusion of water into the inside can be more appropriately prevented. However, the present invention is not necessarily limited to this. For example, a hole may be formed in the outer surface of the intake duct 4 and the hole may be used as the intake port 2.

Further, in the present invention, since the front end 4a of the intake duct 4 is sandwiched between both the radiator support bracket 6 and the engine cover 7, the front end 4a of the intake duct 4 is originally radiator. Even if it is not fixed to the support bracket 6, it can be fixed and held. However, the present invention is not limited to this, and in addition to such means, it is of course possible to fix the distal end portion 4a of the intake duct 4 to the radiator support bracket 6 using appropriate means such as welding. Absent.

In addition, in the present invention, the specific structure of each part such as the intake duct 4, the air cleaner 3, the radiator 1, the radiator support brackets 6, 6 and the like can be variously modified. Radiator support brackets 6, 6
Is not necessarily connected to the wheel house, but may be connected to other parts of the vehicle body.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of an essential part showing an example of an outside air introduction structure of a cab-over type automobile according to the present invention.

FIG. 2 is a sectional view of a main part taken along line XX of FIG. 1;

FIG. 3 is a schematic plan view of a main portion showing an example of a conventional outside air introduction structure of a cab-over type vehicle.

FIG. 4 is a schematic side view of a main part of the outside air introduction structure of the conventional cab-over type vehicle shown in FIG.

FIG. 5 is an explanatory diagram showing a state of a conventional cab-over type automobile when traveling.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 radiator 2 intake port 3 air cleaner 4 intake duct 4 a tip (of intake duct) 5 wheel house (automobile body) 6 bracket for radiator support 7 engine cover

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 2-103821 (JP, U) JP-A 63-164555 (JP, U) JP-A 58-16346 (JP, U) JP-A 4- 99124 (JP, U) Japanese Utility Model 62-130929 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60K 13/02 F02M 35/16

Claims (1)

(57) [Claims] 1. An outside air introduction structure for a cab-over type vehicle in which an intake duct having an intake port is connected to an air cleaner disposed behind a radiator, wherein a tip of the intake duct connects the radiator to an automobile body. The radiator support bracket is mounted on a radiator support bracket for supporting the radiator support bracket and an engine cover disposed above the radiator support bracket. A cab-over type vehicle, characterized in that it is provided on the outer surface of the duct behind the radiator and at a position closer to the outside in the vehicle width direction than the radiator and directed toward the outside of the vehicle body, Outside air introduction structure.