JP2020152274A - Vehicle structure - Google Patents

Abstract

To effectively reduce an influence exerted by an intake system component on an efficiency of cooling an object to be cooled which is located backward from the intake system component.SOLUTION: A vehicle structure includes: an intake pipe 30 for an engine 20 mounted to a vehicle 1; and a vehicle body structure extended in a vehicle width direction of the vehicle 1. The vehicle body structure includes an internal space 15F extended in the vehicle width direction. At least part of the intake pipe 30 is extended in the vehicle width direction inside the internal space 15F, whereby it is stored inside the internal space 15F.SELECTED DRAWING: Figure 3

Description

The present disclosure relates to a vehicle structure, and more particularly to a vehicle structure in which at least a part of an intake system component of an engine is arranged in front of a cooled body mounted on the vehicle.

Generally, in the front structure of a cab-over type vehicle such as a truck, heat exchangers such as an intercooler and a radiator are arranged between side members in front of the engine in the engine room below the cab, and these engines and heat exchangers are covered. The cooling body is configured to guide the running wind taken in from the front grill or the like that opens on the front surface of the cab (see, for example, Patent Documents 1 and 2).

Japanese Unexamined Patent Publication No. 2006-248437 JP-A-2002-036888

By the way, depending on layout restrictions, intake system parts such as an intake pipe and an air cleaner that introduce intake air into the engine are arranged in front of the cooled body such as a heat exchanger and the engine (on the upstream side of the running wind flow). In some cases. In this case, the intake system parts block the running wind guided around the heat exchanger and the engine, which may reduce the cooling efficiency of these objects to be cooled.

It is an object of the technique of the present disclosure to provide a front structure of a vehicle capable of effectively reducing the influence of the intake system component on the cooling efficiency of the object to be cooled behind the intake system component.

The technique of the present disclosure includes an intake pipe of an engine mounted on a vehicle and a vehicle body structure extending in the vehicle width direction of the vehicle, and the vehicle body structure has an internal space extending in the vehicle width direction. The intake pipe is characterized in that at least a part of the intake pipe is accommodated in the internal space by extending in the internal space in the vehicle width direction.

Further, the vehicle body structure is a cross member bridged between a pair of side members facing each other at a predetermined interval in the vehicle width direction, and the vehicle width of one side member of the pair of side members. An air cleaner that filters intake air is arranged on the outer side in the direction, and a cooled body is arranged behind the intake pipe between the pair of side members. The intake pipe is the one side member from the air cleaner. Is bent downward from the inner end of one side member in the vehicle width direction toward the inside space, and is bent toward the other side member in the internal space in the vehicle width direction. It is preferable that the portion arranged in front of the heat exchanger is housed in the internal space by being extended.

Further, the vehicle body structure is a cross member bridged between a pair of side members facing each other at a predetermined interval in the vehicle width direction, and the vehicle width of one side member of the pair of side members. An air cleaner that filters intake air is arranged on the outer side in the direction, and a cooled body is arranged behind the intake pipe between the pair of side members. The intake pipe is the one side member from the air cleaner. A portion that is arranged in front of the heat exchanger by penetrating the side surface portion of the vehicle and extending into the internal space and extending the internal space toward the other side member in the vehicle width direction. Is preferably housed in the internal space.

Further, it is preferable that the intake pipe is further provided so as to penetrate the side surface portion of the other side member.

According to the technique of the present disclosure, it is possible to effectively reduce the influence of the intake system component on the cooling efficiency of the object to be cooled behind the intake system component.

It is a schematic perspective view which shows the vehicle structure which concerns on 1st Embodiment. It is a schematic top view which shows the vehicle structure which concerns on 1st Embodiment. It is a schematic front view which looked at the vehicle structure which concerns on 1st Embodiment from the vehicle front side. It is a schematic side view which looked at the 2nd cross member which concerns on 1st Embodiment from the left side of a vehicle. It is a schematic front view which looked at the vehicle structure which concerns on 2nd Embodiment from the vehicle front side. It is a schematic front view which looked at the vehicle structure which concerns on other embodiment from the front side of the vehicle.

Hereinafter, the vehicle structure according to the present embodiment will be described with reference to the attached drawings. The same parts have the same reference numerals, and their names and functions are also the same. Therefore, detailed explanations about them will not be repeated.

[First Embodiment]
FIG. 1 is a schematic perspective view showing a vehicle structure according to the first embodiment, and FIG. 2 is a schematic upper view showing a vehicle structure according to the first embodiment.

As shown in FIG. 1, the vehicle 1 is, for example, a cab-over type vehicle such as a truck, and a cab 3 (driver's cab) is mounted on the upper part of the vehicle frame 10 on the front end side. The cab 3 is tiltably supported by the vehicle frame 10 via a cab mount (not shown). The vehicle 1 is not limited to a cab-over type vehicle, and may be another vehicle such as an SUV (Sport Utility Vehicle), a pickup truck, or a passenger car.

The vehicle frame 10 has a pair of left and right side members 11 and 12 facing each other at predetermined intervals in the vehicle width direction, and a plurality of cross members 15 (in the illustrated example, a front end cross member 15A on the front end side and a second cross member 15A). Only the second cross member 15B is shown).

The pair of left and right side members 11 and 12 are formed in a substantially U-shaped cross section that opens inward in the vehicle width direction, and are extended in the vehicle front-rear direction with the opening sides facing each other. The cross members 15A and 15B are formed in a U-shaped cross section that opens to the front or rear of the vehicle (rear in the illustrated example), and are bridged between the left and right side members 11 and 12 in the vehicle width direction. The cross-sectional shapes of the side members 11 and 12 and the cross members 15A and 15B are not limited to a substantially U-shape, and may be a substantially rectangular shape.

In the engine room below the cab 3, the engine 20 fixedly supported by the left and right side members 11 and 12 via a mounting mechanism (not shown) or the like is housed. Further, on the front side of the vehicle from the engine 20 in the engine room, the intercooler 40 (an example of the heat exchanger of the present disclosure), the radiator 60 (an example of the heat exchanger of the present disclosure), and the cooling fan are arranged in this order from the front side. 65 (see FIG. 2) and the like are arranged.

A plurality of front grilles 8 for introducing running wind are formed in the engine room at a portion above the front end cross member 15A on the front surface of the cab 3. Further, below the front grill 8, a front bumper 9 supported by the front end cross member 15A is provided.

The intercooler 40 cools the intake air by exchanging heat with the outside air (for example, running wind). Specifically, the intercooler 40 includes an inlet 41, a core portion 42, and an outlet 43. An intermediate intake pipe 53, which will be described in detail later, is connected to the inlet 41, and a downstream intake pipe 54, which will be described in detail later, is connected to the outlet 43. The intake air introduced from the intermediate intake pipe 53 to the core portion 42 via the inlet 41 is cooled by heat exchange with the traveling wind, and then is sent from the outlet 43 to the downstream intake pipe 54. In the illustrated example, the core portion 42 of the intercooler 40 is shown as a horizontal flow type, but it may be a vertical flow type.

The radiator 60 cools the cooling water of the engine 20 by exchanging heat with the outside air (for example, running wind). Specifically, the inlet 61 and the outlet (not shown) of the radiator 60 are connected to the piping of a cooling water circuit (not shown), and the cooling water heated by the water jacket of the engine 20 is supplied. After being cooled by heat exchange with the running wind at the core portion 62 of the radiator 60, it is circulated to the water jacket of the engine 20. In the illustrated example, the core portion 62 of the radiator 60 is shown as a vertical flow type, but it may be a horizontal flow type.

In the present embodiment, the radiator 60 is preferably fixedly supported by brackets (not shown) or the like on the side members 11 and 12 rearward of the second cross member 15B and in front of the engine 20 and intercooler. The cooler 40 is preferably fixedly supported by the radiator 60 via a bracket (not shown) or the like.

As shown in FIG. 2, an exhaust manifold 80 for collecting exhaust gas discharged from an exhaust port (not shown) is provided on the exhaust side side portion (right portion in the illustrated example) of the engine 20. The turbine housing 51 of the turbocharger 50 is connected to the exhaust manifold 80. Further, an exhaust pipe 81 for guiding exhaust gas to an exhaust purification device or the like (not shown) is connected to the turbine housing 51.

An intake manifold 21 for distributing intake air to an intake port (not shown) is provided on the side portion (left portion in the illustrated example) of the engine 20 on the intake side. Further, in the intake manifold 21, the air cleaner 22, the upstream intake pipe 30 (an example of the intake pipe of the present disclosure), the compressor housing 52 of the supercharger 50, the intermediate intake pipe 53, the intercooler 40, and the downstream are in this order from the intake upstream side. The intake pipe 54 is connected.

The air cleaner 22 filters the intake air introduced into the engine 20. Specifically, the air cleaner 22 includes a filter housing 23 having an inlet 24 and an outlet 25, and an element 26 as a filter medium provided in the filter housing 23. In the present embodiment, the air cleaner 22 is arranged outside the left side member 11 in the vehicle width direction.

The upstream intake pipe 30 connects the outlet 25 of the air cleaner 22 and the compressor housing 52 of the turbocharger 50. Details of the upstream intake pipe 30 will be described later.

The intermediate intake pipe 53 connects the compressor housing 52 and the inlet 41 of the intercooler 40. The downstream intake pipe 54 connects the outlet 43 of the intercooler 40 and the intake manifold 21. That is, the intake air pumped by the compressor (not shown) of the supercharger 50 is sent from the intermediate intake pipe 53 to the intercooler 40 to be cooled, and then introduced into the intake manifold 21 from the downstream intake pipe 54. Has been done.

In the present embodiment, at least the upstream portion of the upstream intake pipe 30 extending from the air cleaner 22 is housed in the second cross member 15B in front of the intercooler 40. Hereinafter, the details of the upstream intake pipe 30 will be described with reference to FIGS. 3 and 4.

FIG. 3 is a schematic front view of the vehicle structure according to the first embodiment as viewed from the front side of the vehicle.

As shown in FIG. 3, the upstream intake pipe 30 includes a first straight pipe portion 31, a first elbow pipe portion 32, a second straight pipe portion 33, and a second elbow pipe portion 34 in order from the intake upstream side. A third straight pipe portion 35, a third elbow pipe portion 36, a fourth straight pipe portion 37, a fourth elbow pipe portion 38, and a connecting pipe portion 39 are provided. Each of these pipe portions 31 to 39 may be formed integrally, or all or a part of them may be formed as separate pipes.

The inlet end of the first straight pipe portion 31 is connected to the outlet 25 of the air cleaner 22 arranged outside the left side member 11 in the vehicle width direction. Further, the first straight pipe portion 31 extends from the outlet 25 to the right end of the left side member 11 in the vehicle width direction on the upper surface of the left side member 11. The first straight pipe portion 31 is preferably fixed to the upper surface of the left side member 11 with a bracket or the like (not shown). The inlet end of the first elbow pipe portion 32 is connected to the outlet end of the first straight pipe portion 31.

The first elbow tube portion 32 is bent and formed in a substantially L shape downward from the outlet end of the first straight tube portion 31. The inlet end of the second straight pipe portion 33 is connected to the outlet end of the first elbow pipe portion 32.

The second straight pipe portion 33 extends downward from the outlet end of the first elbow pipe portion 32 and is inserted into a through hole 15G formed in the upper surface portion 15C of the second cross member 15B.

More specifically, as shown in FIG. 4, the outlet end side 33A of the second straight pipe portion 33 opens rearward, which is partitioned by the upper surface portion 15C, the lower surface portion 15D, and the front surface portion 15E of the second cross member 15B. It is received in the internal space 15F. The inlet end of the second elbow pipe portion 34 is connected to the outlet end of the second straight pipe portion 33. The second straight pipe portion 33 may be inserted into a through hole (not shown) formed on the upper surface portion of the left side member 11.

Returning to FIG. 3, the second elbow pipe portion 34 is bent in a substantially L shape from the outlet end of the second straight pipe portion 33 toward the inside in the vehicle width direction in the internal space 15F of the second cross member 15B. Has been done. The inlet end of the third straight pipe portion 35 is connected to the outlet end of the second elbow pipe portion 34.

The third straight pipe portion 35 extends from the outlet end of the second elbow pipe portion 34 to the left end of the right side member 12 in the internal space 15F of the second cross member 15B in the vehicle width direction. That is, the third straight pipe portion 35 is arranged so as to be completely accommodated in the internal space 15F of the second cross member 15B. The inlet end of the third elbow pipe portion 36 is connected to the outlet end of the third straight pipe portion 35.

The third elbow tube portion 36 is bent and formed in a substantially L-shape upward from the outlet end of the third straight tube portion 35 in the internal space 15F of the second cross member 15B. The inlet end of the fourth straight pipe portion 37 is connected to the outlet end of the third elbow pipe portion 36.

The fourth straight pipe portion 37 extends upward from the outlet end of the third elbow pipe portion 36 along the left end of the right side member 12, and is formed in a through hole 15H formed in the upper surface portion 15C of the second cross member 15B. It has been inserted. The inlet end of the fourth elbow pipe 38 is connected to the outlet end of the fourth straight pipe 37. The fourth straight pipe portion 37 may be inserted into a through hole (not shown) formed on the upper surface portion of the right side member 12.

The fourth elbow pipe portion 38 is bent in a substantially L shape from the outlet end of the fourth straight pipe portion 37 toward the outside in the vehicle width direction. A connecting pipe portion 39 extending toward the compressor housing 52 (see FIG. 2) is connected to the outlet end of the fourth elbow pipe portion 38.

According to the present embodiment described in detail above, the air cleaner 22 for filtering the intake air is arranged outside the left side member 11 facing the intake side of the engine 20, and is provided on the exhaust side of the air cleaner 22 and the engine 20. The feeder 50 is connected to the third straight pipe portion 35, which forms at least a part thereof, by an upstream intake pipe 30 arranged in front of the intercooler 40. In such a layout structure, the third straight pipe portion 35 arranged in front of the intercooler 40 is located in the internal space 15F of the second cross member 15B in front of the intercooler 40 from the left side member 11 to the right. It extends in the vehicle width direction toward the side member 12. That is, the third straight pipe portion 35 is configured to be completely housed in the internal space 15F of the second cross member 15B.

In other words, the running wind taken into the engine room from below the front grill 8 and the front bumper 9 (both see FIGS. 1 and 2) is not blocked by the third straight pipe portion 35, and has an influence on the running wind. The second cross member 15B can be minimized. As a result, the running wind can be effectively introduced into the core portions 42 and 62 of the intercooler 40 and the radiator 60, and further to the engine 20, and the third straight pipe such as these heat exchangers 40 and 60 and the engine 20 can be used. It is possible to effectively reduce the influence on the cooling efficiency of the cooled object arranged behind the portion 35 (downstream side of the traveling wind flow).

Further, by housing the pipe portions 34 to 36 of the upstream intake pipe 30 in the internal space 15F of the second cross member 15B and arranging them in a fixed manner, the structural strength of these pipe portions 34 to 36 is effectively enhanced. Will be possible.

[Second Embodiment]
FIG. 5 is a schematic front view of the vehicle structure according to the second embodiment as viewed from the front side of the vehicle.

In the second embodiment, in the upstream intake pipe 30 of the first embodiment, the first straight pipe portion 31, the first elbow pipe portion 32, the second straight pipe portion 33, and the second elbow pipe portion 34 are omitted. 3 The straight pipe portion 35 is directly connected to the air cleaner 22.

Specifically, the inlet side of the third straight pipe portion 35 is inserted through the through hole 11A formed in the side surface portion of the left side member 11 and is directly connected to the outlet 25 of the air cleaner 22. In this way, the third straight pipe portion 35 is passed through the side surface portion of the left side member 11 from the air cleaner 22 side, and the inside of the internal space 15F of the second cross member 15B is directed toward the right side member 12 in the vehicle width direction. By extending it, the third straight pipe portion 35 is configured to be completely accommodated in the internal space 15F of the second cross member 15B.

In other words, as in the first embodiment, the running wind taken into the engine room from below the front grill 8 and the front bumper 9 (both of which see FIGS. 1 and 2) is not blocked by the third straight pipe portion 35. The influence on the running wind can be minimized to the second cross member 15B. As a result, the running wind can be effectively introduced into the core portions 42 and 62 of the intercooler 40 and the radiator 60, and further to the engine 20, and the third straight pipe such as these heat exchangers 40 and 60 and the engine 20 can be used. It is possible to effectively reduce the influence on the cooling efficiency of the cooled object arranged behind the portion 35 (downstream side of the traveling wind flow).

Further, by inserting and fixing the inlet side of the third straight pipe portion 35 into the through hole 11A of the left side member 11, the structural strength of each pipe portion 35 to 37 can be effectively increased.

Further, by reducing the number of elbow pipes and reducing the bending points of the upstream intake pipe 30, it is possible to effectively reduce the pressure loss of the intake air flowing through the upstream intake pipe 30.

Further, a space is secured on the upper surface of the left side member 11, and the layout around the left side member 11 can be effectively improved.

[Other]
It should be noted that the present disclosure is not limited to the above-described embodiment, and can be appropriately modified and implemented without departing from the gist of the present disclosure.

For example, as shown in FIG. 6, in the upstream intake pipe 30 of the second embodiment, the third elbow pipe portion 36, the fourth straight pipe portion 37, and the fourth elbow pipe portion 38 are omitted, and the third straight pipe portion 38 is omitted. The outlet side of the portion 35 may be inserted through the through hole 12A formed in the side surface portion of the right side member 12. Also in this case, the third straight pipe portion 35 is completely accommodated in the internal space 15F of the second cross member 15B, and the heat exchangers 40, 60, the engine 20, etc., etc., are the same as in the above embodiment. 3 It is possible to effectively reduce the influence on the cooling efficiency of the cooled body arranged behind the straight pipe portion 35 (on the downstream side of the traveling wind flow).

Further, in each of the above embodiments, the third straight pipe portion 35 has been described as being housed in the internal space 15F of the second cross member 15B, but depending on the layout and the like, other than the front end cross member 15A and the like. It may be housed in the internal space of the cross member.

Further, in the above embodiment, the heat exchanger has been described as including the intercooler 40 and the radiator 60, but either one of them, an oil cooler for cooling the engine oil, or an EGR cooler for cooling the recirculation exhaust. Etc. may be provided.

Further, the vehicle frame 10 is not limited to the ladder frame structure of the illustrated example, and may have a monocoque frame structure.

1 Vehicle 3 Cab 8 Front Grill 10 Vehicle Frame 11 Left Side Member 11A Through Hole 12 Right Side Member 12A Through Hole 15A Front End Cross Member 15B Second Cross Member 15C Top 15D Bottom 15E Front 15F Internal Space 20 Engine 22 Air Cleaner 30 Upstream intake pipe (intake pipe)
31 1st straight pipe part 32 1st elbow pipe part 33 2nd straight pipe part 34 2nd elbow pipe part 35 3rd straight pipe part 36 3rd elbow pipe part 37 4th straight pipe part 38 4th elbow pipe part 39 connection Pipe 40 Intercooler (heat exchanger)
60 radiator (heat exchanger)

Claims (4)

The intake pipe of the engine mounted on the vehicle and
A vehicle body structure extending in the vehicle width direction of the vehicle is provided.
The vehicle body structure has an internal space extending in the vehicle width direction, and at least a part of the intake pipe is accommodated in the internal space by extending the internal space in the vehicle width direction. The vehicle structure is characterized by being The vehicle body structure is a cross member bridged between a pair of side members facing each other at a predetermined interval in the vehicle width direction.
Of the pair of side members, an air cleaner that filters intake air is arranged on the outside of one side member in the vehicle width direction, and a cooled body is arranged behind the intake pipe between the pair of side members. Ori,
The intake pipe extends from the air cleaner on the upper surface of the one side member, is bent downward from the inner end in the vehicle width direction of the one side member toward the inside space, and is bent downward in the internal space. The vehicle structure according to claim 1, wherein a portion arranged in front of the heat exchanger is housed in the internal space by being bent toward the side member of the vehicle and extending in the vehicle width direction. .. The vehicle body structure is a cross member bridged between a pair of side members facing each other at a predetermined interval in the vehicle width direction.
Of the pair of side members, an air cleaner that filters intake air is arranged on the outside of one side member in the vehicle width direction, and a cooled body is arranged behind the intake pipe between the pair of side members. Ori,
The intake pipe extends from the air cleaner through the side surface portion of the one side member into the internal space, and extends in the internal space toward the other side member in the vehicle width direction. The vehicle structure according to claim 1, wherein a portion arranged in front of the heat exchanger is housed in the internal space. The vehicle structure according to claim 3, wherein the intake pipe is further provided so as to penetrate a side surface portion of the other side member.

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