JPH0761247A - Heat exchanger fitting structure for vehicle - Google Patents

Abstract

PURPOSE:To facilitate the layout of each equipment in an auxiliary machinery storage chamber by disposing an intercooler making use of a narrow space without lowering the cooling ability in an automobile provided with a supercharger at the intake system of an engine, and the intercooler for cooling the supercharged intake air. CONSTITUTION:The lower part of a radiator 13 is supported by No.1 cross member 15. Behind the radiator 13 and in a height position below the passing air discharge port of the radiator 13, an intercooler 21 is disposed being supported at the front face of a suspension cross member 20. An air duct 28 leading travel air to the intercooler 21 is disposed passing under the radiator 13 from below No.1 cross member 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger mounting structure for a vehicle, and more particularly to a structure for mounting a heat exchanger such as an intercooler by utilizing an effective space.

[0002]

2. Description of the Related Art In an engine of a vehicle equipped with a supercharger, the temperature of intake air rises due to pressurization, and the intake charging efficiency deteriorates. For example, as disclosed in Japanese Patent Laid-Open No. 123931/1992. An intercooler is provided in the middle of an air pipe connecting a turbocharger and an intake manifold, and the intake air after pressurization is cooled by the intercooler to lower the temperature.

[0003]

By the way, as in recent automobiles, when the number of cylinders of an engine is increased, the number of valves is increased, and the intake system is enlarged by adding the supercharger and the intercooler, the engine room There is no room in the internal space, and it becomes difficult to take space for the heat exchanger such as the intercooler and other devices, and the layout of these becomes difficult. Further, if the intercooler is arranged in a position where the traveling wind is hard to hit because the layout is difficult, the cooling capacity of the intercooler may decrease.

In view of the above, according to the present invention, in particular, a heat exchanger smaller than a radiator such as the intercooler is arranged by occupying an effective space, so that the layout of other equipment can be facilitated. The challenge is to provide the structure.

[0005]

That is, the invention described in claim 1 of the present invention (hereinafter, referred to as the first invention) is a heat of a vehicle in which a radiator is provided at a position on the front of the vehicle body where the traveling wind hits. In the exchanger mounting structure, a cross member that connects the left and right side frames is arranged in the lower rear part of the radiator, and a heat exchanger smaller than the radiator hits the cross wind so that the traveling wind hits the cross member. It is characterized by being installed in.

The invention according to claim 2 (hereinafter referred to as the second
(Invention), two cross members that connect the left and right side frames are arranged in the front and rear with the radiator sandwiched therebetween, the lower side of the radiator is supported by the front side cross member, and at the rear of the radiator, A heat exchanger smaller than the radiator is supported by a rear cross member at a height position lower than the passing air discharge port of the radiator, and an air duct for guiding traveling wind to the heat exchanger is provided at the front side. It is characterized in that the heat exchanger is arranged from below the side cross member to below the radiator.

The invention according to claim 3 (hereinafter, referred to as the third
The rear cross member is a suspension cross member, and the heat exchanger is attached to the suspension cross member via an elastic body for a dynamic damper.

Further, the invention according to claim 4 (hereinafter referred to as the fourth invention) is characterized in that the heat exchanger is an intercooler.

[0009]

According to the first aspect of the present invention, since the heat exchanger smaller than the radiator is arranged below and behind the radiator,
The heat exchanger can be arranged by effectively utilizing the narrow space formed between the radiator and the cross member behind the radiator, and the space for arranging other devices is increased by the amount of this heat exchanger, and The cross member can be used as a support member for the heat exchanger.

Further, according to the second aspect of the invention, since the heat exchanger is located below the passing air discharge port of the radiator, even if the heat exchanger is arranged behind the radiator, the heat exchanger can be operated by the heat exchanger. The flow of the air passing through the radiator is not obstructed, and the air duct that guides the traveling air to the heat exchanger is installed from the front cross member to the heat exchanger through the radiator. It can blow air directly to the heat exchanger.

According to the third aspect of the invention, the suspension cross member can be used as a support member for the heat exchanger, and the vibration of the heat exchanger is absorbed by the elastic body for the dynamic damper. The vibration of the steering shaft and the steering wheel is suppressed.

Further, according to the fourth aspect of the invention, the intercooler is positioned below the rear of the radiator, whereby the first cooler is provided.
And the same effect as that of the second invention can be obtained.

[0013]

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

FIG. 1 shows a cab-over type automobile such as a one-bonks car, in which a central portion of a floor panel 2 provided on a vehicle body 1 in a vehicle width direction is bulged upward in a vehicle interior 3 and The bulging portion 4 forms a recessed space 5 that is recessed upward in the lower surface of the floor panel 2, and the left and right side frames 6 are disposed below the floor panel 2.
By providing the undercover 7 supported by 6, the engine room 8 is formed between the bulging portion 4 and the undercover 7, and the upper part of the engine room 8 projects into the recessed space 5. The engine 9 is arranged in.

The front side of the vehicle body relative to the dash panel 10 to which the front end of the floor panel 2 is connected serves as an auxiliary equipment storage chamber 11, and a front grill for taking in traveling air into the auxiliary equipment storage chamber 11 is provided. A radiator 13 is arranged at a position where the radiator 12 is opened in the front surface of the vehicle body and the traveling wind introduced into the auxiliary equipment storage chamber hits the radiator 13, and a radiator fan 14 is attached to the rear surface of the radiator 13. In this case, the radiator 13 is supported at its lower part by the support metal fitting 16 on the rear surface of the No1 cross member 15 which is erected over the left and right side frames 6, 6, and the shroud which is also erected over the left and right side frames 6, 6. The upper part is supported by the support metal 18 on the rear surface of the upper 17, and in this state, the radiator fan 14 blows the passing air passing through the radiator 13 toward the tunnel portion 19 described below.

That is, the bulging portion 4 of the floor panel 2 and the auxiliary equipment accommodating chamber 11 are formed in the center portion of the floor panel 2 in the vehicle width direction and are shorter than the bulging portion 4 and are auxiliary members. By being configured to be communicated with each other by the tunnel portion 19 having a width narrower than that of the machine storage chamber 11, the upper surface of the tunnel portion 19 is configured to rise obliquely toward the bulging portion 4 described above,
The wind passing through the radiator 13 is sent to the tunnel portion 19 by the radiator fan 14, guided by the rising portion 19A and guided to the recessed space 5, and the recessed space 5 is scavenged. As a result, the heat of the engine 9 that tries to stay in the recessed space 5 is discharged, and the reduction in engine output and the adverse effects on electrical components around the engine are eliminated.

A suspension cross member 20 for connecting the left and right side frames 6, 6 is arranged behind the radiator 13 and the radiator fan 14, and passes through the radiator 13 below the radiator fan 13 to pass from the radiator fan 14. An intercooler 21, which is sufficiently smaller than the radiator 13, is arranged at a position that does not obstruct the airflow flowing backward and in front of the suspension cross member 20, and the intercooler 21 is attached to the suspension cross member 20. That is, a plurality of rearwardly extending brackets 22 to 22 are fixed to the upper and lower surfaces of the intercooler 21 by welding or the like, and extend forward in correspondence with these brackets 22 to 22 on the upper and lower surfaces of the suspension cross member 20. The same number of brackets 23 to 23 are fixed, and the corresponding brackets 22 and 23 are respectively rubber 24.
The intercooler 21 is mounted on the suspension cross member 20 by being connected via the. In that case, the rubber 23 has an elastic coefficient that resonates with the vibration when the intercooler 21 vibrates during traveling or the like, and thereby a dynamic damper is configured.

Further, the intercooler 21 is provided with two ports 24, 25 on the upper surface thereof, and one port 24 is connected with an upstream air pipe 26 for connecting the supercharger (not shown) and the intercooler 21. , The intake manifold not shown in the other port 25 and the intercooler 2
1 is connected to the downstream air pipe 27. On the other hand, the rear part of the air duct 28 is connected to the front part of the intercooler 21. The tip side of the air duct 28 is
The upper surface of the radiator 13 and the No. 1 cross member 15 are lowered so as to be able to sneak into the lower part of the radiator, and the tip end portion is flattened in the lateral direction so that the tip end portion passes under the radiator 13 first. No 1 mentioned
It extends to the bottom of the cross member 15 and is opened. Then, in this portion, a plurality of places N
It is fixed to the lower surface of the o1 cross member 15. A flange portion 30 is formed around the rear portion of the air duct 28,
By connecting the flange portion 30 to the front surface portion of the intercooler 21 with the fastener 31, the traveling wind that has flowed in from the opening portion is intercooled by the air duct 28.
It is designed to lead to.

A well-known front wheel steering mechanism 34 is mounted on the suspension cross member 20 using a bracket 33 or the like fixed to the cross member 20, and the rotation of a steering wheel (not shown) is shown in FIG. A steering rod 37 is input via a steering shaft 35 and a rack and pinion mechanism 36 shown in FIG.

According to this structure, the traveling wind taken in from the front grill 12 passes through the radiator 13 and then the radiator fan 14 allows the tunnel portion 1 to pass through.
9 to the engine room 8 from the tunnel section 19
Flow into. Then, the traveling air scavenges the recessed space 5, the hot air of the engine 9 that tries to stay in the recessed space 5 is carried away to the outside of the engine room, and the engine 9 itself is cooled by the traveling wind.

Further, a part of the traveling wind taken in from the front grill 12 flows into the air duct 28 and then passes through the intercooler 21 to cool the intake air, but in this case, it is smaller than the radiator 13. Since the intercooler 21 is disposed below and behind the radiator 13 and the radiator fan 14, the intercooler 21 can be disposed by effectively utilizing the narrow space X formed between the radiator 13 and the suspension cross member 20 behind the radiator 13. As a result, the auxiliary cooler storage room 11 can be widely used by the amount of the intercooler 21.
The layout of other devices stored in 1 becomes easy.

In addition, since the intercooler 21 is sufficiently smaller than the radiator 13 as described above, the intercooler 21 may be arranged in the narrow space X so as not to interfere with the smooth flow of the air passing through the radiator behind the radiator fan. In addition, the ability of the radiator 13 is not lowered, and the suspension cross member 20 can be used as a support member of the intercooler 21 by arranging the suspension cross member 20 at the front portion of the suspension cross member 20, and the support structure can be simplified.

Further, the radiator 13 is located on the rear side of the No. 1 cross member 15, and the tip end of the air duct 28 for guiding the traveling wind to the intercooler 21 is passed under the radiator 13 to extend below the No. 1 cross member 15. Therefore, the No1 cross member 15 can be used as a supporting member at the tip of the air duct, the air duct 28 can be firmly supported, and the traveling wind taken in from the front grill 12 is obstructed by the radiator 13 and the No1 cross member 15. Can be directly taken in and guided to the intercooler 21. Even if the intercooler 21 is arranged behind the radiator 13, the intercooler 21 can be directly introduced.
Does not impair the performance of.

In the mounting structure of the intercooler 21 described above, the intercooler 21 vibrates due to vibration from the vehicle body side during traveling, which causes the suspension cross member 20 to vibrate.
In addition, it is considered that the steering shaft 35 and the steering wheel are vibrated by being transmitted to the front wheel steering mechanism 34. However, as described above, since the bracket 22 on the intercooler 21 side and the bracket 23 on the suspension cross member 20 side are connected by the rubber 24 forming the dynamic damper, the resonance vibration of the rubber 24 causes the vibration from the intercooler 21 side. The vibration to be input is canceled and the vibration of the steering shaft 35 and the like is suppressed.

In the above-described embodiment, the intercooler 21 is arranged in the space X, but this may be another heat exchanger sufficiently smaller than the radiator 13 such as an oil cooler. The present invention can also be applied to automobiles other than the cab overtype.

[0026]

As is apparent from the above description, according to the first aspect of the present invention, since the heat exchanger smaller than the radiator is arranged below and behind the radiator, the radiator and the cross member behind the radiator are disposed. The heat exchanger can be arranged by effectively utilizing the narrow space formed between the heat exchangers, the space for arranging other devices is increased by the amount of this heat exchanger, and the cross member is supported by the heat exchanger. It can be used as a member. Therefore, the layout of other devices and the like becomes easy.

According to the second aspect of the invention, since the heat exchanger is located below the passing air discharge port of the radiator, even if the rear heat exchanger of the radiator is arranged, the heat exchanger can still be used to heat the radiator. Since the air flow of the passing air is not obstructed and the air duct that guides the traveling air to the heat exchanger is installed from the front side cross member to the heat exchanger through the radiator, ensure that it is not disturbed by the radiator. It can blow air directly to the heat exchanger. Therefore, the radiator and the intercooler are not deteriorated in performance.

Further, according to the third aspect of the invention, the suspension cross member can be used as a support member of the heat exchanger, the support structure is simplified, and the vibration of the heat exchanger is absorbed by the elastic body for the dynamic damper. Therefore, this vibration is less likely to be propagated to the suspension cross member, and vibrations of the steering shaft and the steering wheel are suppressed.

Further, according to the fourth aspect of the invention, the intercooler is located below and behind the radiator, so that the same effects as those of the first and second aspects of the invention can be obtained.

[Brief description of drawings]

FIG. 1 is a sectional view of a vehicle body front portion of an automobile according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of the automobile.

FIG. 3 is a plan view of FIG.

[Explanation of symbols]

 6 Side Panel 11 Auxiliary Equipment Storage Room 12 Front Grill 13 Radiator 15 No1 Cross Member 20 Suspension Cross Member 21 Intercooler 28 Air Duct

Claims (4)

[Claims] 1. A heat exchanger mounting structure for a vehicle, wherein a radiator is provided at a position on the front of a vehicle body where the traveling wind hits, and a cross member for connecting left and right side frames is arranged below and behind the radiator. A heat exchanger mounting structure for a vehicle, wherein a heat exchanger smaller than a radiator is mounted on the cross member so as to be hit by the traveling wind. 2. A heat exchanger mounting structure for a vehicle, in which a radiator is provided at a position on the front of a vehicle body where the traveling wind hits, and a cross member connecting left and right side frames is arranged in front of and behind the radiator. A heat exchange that is smaller than the radiator is installed in the main body, the lower part of the radiator is supported by the front cross member, and is located behind the radiator and at a height position that is lower than the passing air discharge port of the radiator. Is provided by being supported by a rear cross member, and an air duct for guiding traveling wind to the heat exchanger is provided from below the front cross member to under the radiator to the heat exchanger. Vehicle heat exchanger mounting structure. 3. The rear cross member is a suspension cross member, and a heat exchanger is attached to the suspension cross member via an elastic body for a dynamic damper. The vehicle heat exchanger mounting structure described. 4. The heat exchanger mounting structure for a vehicle according to claim 1, wherein the heat exchanger is an intercooler.