JPS6137534A - Engine cooling device in carrier vehicle - Google Patents

Abstract

PURPOSE:To aim at reducing the air drag of a carrier vehicle and at enhancing the economy of fuel consumption, by having the shell plate of body of the carrier vehicle serve as a radiator to eliminate a radiator, a cooling fan and a fan motor. CONSTITUTION:Each of side skirts 1 used as the shell plate of a truck body is composed of panel-like radiators 2 having a suitable size for cooling a cooling water for an engine 4 disposed in a cab 3, and the panel-like radiators 2 are extended in the longitudinal direction of the vehicle to form both side skirts of the body 5. Each panel-like radiator 2 is formed therein with a cooling water introduction opening 6 and a cooling water discharge opening 7 which are connected in parallel together, to a water feed pipd 8 and a water discharge pipe 9 from an engine 4 so that cooling water is led for circulation into the panel-like radiators 2. A circulating pump is disposed in an engine 4.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an engine cooling system for a transport vehicle such as a truck that has a relatively long body. This invention relates to a transport vehicle 9 engine cooling device having an Iso OL.

[Prior Art] Conventional technologies related to vehicle engine cooling systems include:
First, as shown in Japanese Utility Model Application Publication No. 51-50130, water channels are formed in the left and right main girders of a narrow gauge vehicle, and engine cooling water is circulated through these channels for cooling.
There is one that reduces the burden on the radiator installed at the front of the vehicle. Next, as shown in Japanese Utility Model Application No. 58-81121, the position of the radiator is changed from the front of the cab to the space provided in the cab roof, and the wind blowing against the front of the vehicle is passed through the radiator. Some radiators have improved cooling capacity by increasing the feed HA m.

Although it is not an engine cooling system, there is a system that is equivalent to an oil cooler for an engine, etc., for example,
As shown in Japanese Patent No. 39880, an oil passage is formed in the head guard formed on the top of the cargo handling vehicle, and oil from the engine, etc. is circulated through this to cool the part.
Some attempts were made to improve the cold water capacity of the oil cooler.

On the other hand, as a conventional technology for a heat exchanger constituting a main part of a cooling section device, for example, as shown in Japanese Utility Model Application Publication No. 55-8817 and Japanese Utility Model Application Publication No. 55-14957, There was a method that solved the trouble of assembling the tube and the main body that supports it as separate parts by integrally molding the heat exchanger by polymerizing and bonding the panels that formed the tube.

[Problems to be Solved by the Invention] However, the three conventional techniques related to the above-mentioned cooling device all increase the cooling capacity.

However, in the first method, a straight water channel is simply provided to divert the cooling water, so it cannot be expected that the water channel will improve the cooling capacity much. Therefore, although adding water channels to existing radiators made the structure more complex, it had the disadvantage of being less effective. Also the second
This is simply a matter of changing the location of the radiator from the front of the cab to the cab roof, which is not very wide.
The radiator's heat exchange efficiency does not increase dramatically, and an electric cooling fan is still required to effectively blow air, resulting in loss of engine horsepower due to fan rotation. cannot be reduced. Moreover, it is necessary to install a flap or rectifying grill on the front of the cab roof to blow air into the radiator.
These had the disadvantage that air resistance caused debris to enter.

The third method is that the oil cooler is simply installed on the head guard, which corresponds to the cab roof in a truck, so even if the engine cooling water is cooled instead of the temporary oil, the area of the cooler is limited. Similar to the second method, this method has the disadvantage that it cannot be expected to increase much.

In addition, although both of the two conventional technologies related to heat exchangers can be expected to simplify the manufacturing process in that the water passages are simultaneously molded by simply polymerizing and bonding two panels,
There is only an inlet and an outlet, but no air vent opening, so water cannot be injected when injecting water for heat exchange, or even if water can be injected, air cannot be handled properly. One drawback is that air remains in the heat exchanger if this is not done completely, creating resistance to the flow of water and preventing the heat exchanger from achieving its original heat exchange performance.

[Object of the Invention] The object of the present invention has been made in view of the above-mentioned prior art, and it is possible to eliminate the radiator on the front of the vehicle by providing the radiator function to the outer panel of the vast body that occupies most of the area of the transport vehicle. Not only that, but also the cooling fan and its fan motor that were necessary for the radiator can be eliminated to reduce air resistance and improve fuel efficiency, and moreover, the transport vehicle can demonstrate sufficient cooling performance. An object of the present invention is to provide an engine cooling device.

[Summary of the Invention 1 The structure of the present invention in accordance with the above object is that a radiator for cooling engine cooling water is formed into a panel shape, and this panel-shaped radiator itself constitutes a side skirt, an 0III wall, or an underfloor panel of the body. It is characterized by This allows the engine cooling water to be sufficiently cooled without the need for a cold NJ fan or fan motor, and eliminates the need for a radiator or air intake on the front of the vehicle. .

[Example] An example of the present invention will be described below based on FIGS. 1 to 8. In this embodiment, only a truck is used as a transport vehicle, but the present invention is also applicable to other large-bodied buses, concrete mixer trucks, fire engines, etc.

As shown in FIG. 1, a side skirt 1 serving as an outer panel of a truck body is composed of a panel-shaped radiator 2. The panel-shaped radiator 2 is a panel-shaped radiator of an appropriate size that cools the cooling water of the engine 4 installed in the cab 33. Multiple pieces are installed in series along the length of the vehicle. Each panel-shaped radiator 2 is provided with an opening 6 for a cooling water inlet and an opening lower for a cold section water outlet, and a water supply vibe 8 and a drainage pipe 9 extending from the engine 4 are respectively connected in parallel to these. , the cooling water of the engine 4 is guided to and circulated through each panel-shaped radiator 2.

Although not shown, a circulation pump for circulating cooling water is provided inside the engine 4.

Not only the panel-shaped radiator 2 but also general radiators cool the cooling water by heat exchange with the air, so the larger the heat exchange area with the air, the higher the cooling performance. Therefore, if the side skirt 1, which has a very large area and is provided along the entire length of the body to close the gap formed below the body, is composed of a plurality of panel-shaped radiators 2, both the front and back sides of the side skirt will be exposed to air. In addition to this, the total heat exchange area of the panel-shaped radiator 2 with the air is extremely large.

Therefore, in order to install the panel-shaped radiator 2 in a wide area, it is not necessarily limited to the side skirt, but as shown in FIG. 2 or FIG. It may be 11.

Next, the panel-shaped radiator 2 that constitutes the side skirt
The details will be described below.

As shown in FIG. 4, the panel-shaped radiator 2 has an inlet chamber 12 and an outlet chamber 13 for storing water on the left and right sides of the panel.
and a parallel tube 14.14 formed in multiple stages to communicate between the two chillen bars 12.13.
. . . A group of multistage tubes 14.1 are provided to guide cooling water from the cooling water inlet mouthpiece 15 at the top of the inlet chamber.
4... The cooling water is configured to be discharged from the cooling water outlet mouthpiece 16 at the bottom of the outlet chamber through the group.

This panel-shaped radiator 2 is formed as follows. 5 to 7, an opening 6 for inlet of cold 2Jl water, an inlet chamber 12, a tube 14, 14.
...The panels 20 and 20, which are formed with the bowl strips 17, 18 and 19 which are to be the lower part for the outlet chamber 13 and the cooling water outlet, are overlapped from the left and right sides, and 7 lunges 22 are formed.
．． 22 to integrally mold the openings 6, 7, the inlet/outlet chambers 12, 13, and the tubes 14, 14... group. The formation of the Leebanel-shaped radiator 2 is completed by attaching the caps 15 and 16 to the integrally molded model and the opening 6 for the cooling water inlet and the open lower part for the cooling water outlet by welding or brazing, respectively.

The cross-sectional area of the inlet/outlet chambers 12 and 13, in which cooling water is temporarily stored, is designed to be more than twice the total cross-sectional area of the tubes 14, 14... group. This is a consideration for smoothing the flow of water within each tube 14, and was determined based on experience.

Note that the panels 20 and 20 to be superposed are not limited to flat plates, but may have curved surfaces, or as shown in FIG.
The bowl strip portion 1-7 may be provided only on the portion 0.

Now, the operation of the embodiment configured as described above will be explained.

The cooling water that has circulated within the engine 4 to cool the engine 4 exits the engine 4 and flows into the water supply vibe 8, through which it is transferred from the cab 3 to the body 5, where it is transferred to the 1° panel that forms the side skirt of the body. radiators 2.2... in parallel. The cooling water flowing into each panel-shaped radiator 2 is heat exchanged with air and cooled, and then
Panel-shaped radiator 2. Drainage vibe 9 coming out from 2...
The water flows out through this, returns to the engine 4, and is used to cool the engine 4 again.

In this case, since the panel-shaped radiators 2, 2, . . . constitute the side skirts, the sum of their heat exchange areas is extremely large. Therefore, there is no need to forcibly blow air to these panel-shaped radiators 2, and the cooling capacity of the panel-shaped radiators 2, 2... is extremely large, and the water is sufficiently cooled. It is possible to sufficiently contribute to cooling the engine 4 without providing any.

In this way, the side skirt can be attached to a panel-shaped radiator 2.2
By configuring ..., there is no need to forcefully blow air to these panel-shaped radiators 2.2..., so the cold N1 fan for blowing air to the radiators and the fan motor that drives it can be discontinued. As a result, it is possible to eliminate the horsepower loss of the engine used to power these engines, and improve fuel efficiency.

Furthermore, not only the radiator but also the cooling fan and fan motor can be eliminated from the narrow cab 3, so space can be saved and the cab can be downsized. Moreover, with the removal of the radiator at the front of the cab, there is no need to take in air from the front of the vehicle. air resistance can be significantly reduced. This reduction in air resistance is different from the case of bulldozers, forklifts, etc., and is particularly significant for trucks that require high speed.

On the other hand, the panel-shaped radiator 2 has two panels 20.20
Simply polymerize and glue the inside of the inlet/outlet chamber 12.
13, tubes 14, 14, etc. are integrally molded, and the fins formed by the ridges 17 projecting to the outside are molded at the same time, so the process of welding or brazing them can be completely omitted. Therefore, the cost of forming the panel-shaped radiator 2 can be reduced, and
The product v1 and appearance can also be improved.

FIG. 9 shows a modification of the embodiment shown in FIG.
The difference from the diagram is that firstly, between the horizontal tubes 14, 14, which are formed in multiple stages, there are vertical tubes 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23... This has the advantage that the cooling capacity can be further increased. Also,
Second, an air handling opening 24 is provided at the top of the outlet chamber 13.
is provided, and a cap 25 is welded or brazed thereto. When water is injected, the water first enters the inlet chamber 12, passes through the horizontal tube 14 and the vertical tube 23, and enters the outlet chamber 1.
3, and the inside of the panel-shaped radiator 2 is gradually filled.

On the other hand, the air inside the radiator 2 flows from the bottom to the top through the horizontal tube 14 and the vertical tube 23, and exits to the outside through the mouthpiece 25 from the air-handling-only frontage 24. Therefore, one advantage is obtained that the air in the panel-shaped radiator 2 can be completely handled, the cooling water can flow smoothly, and the original cooling performance of the radiator can be fully exhibited.

FIG. 10 shows another modification of the embodiment shown in FIG. 9, and the difference from FIG. 9 lies in that the horizontal tube is tilted to form an inclined tube 26. That is, the inclined tube 26 is disposed obliquely so that the root of the inlet chamber 12 is located above the root of the inlet chamber 12. This provides the advantage that air can easily escape upwards when cooling water is injected, allowing for more complete air removal.

[Effects of the invention] That's it! ! According to this invention, the following excellent effects are exhibited.

(1) The outer skin of the body, which has an area that is incomparably larger than the space inside the cab, is made up of panels and a radiator. Since sufficient heat exchange is possible without forced air blowing, the radiator on the front of the vehicle and the cooling fan and fan motor required therefor can be omitted without impairing the cooling capacity. Therefore, it is possible to improve fuel efficiency by eliminating the need for power for driving the fan motor, and also to save space at the front of the vehicle, thereby making it possible to downsize the cab.

(D) With the removal of the radiator at the front of the vehicle, there is no need to take in air from the front of the vehicle, so by blocking the air intake at the front of the vehicle and making the surface smooth, the air resistance caused by the air intake can be reduced. It is possible to suppress the increase and thereby improve high-speed performance.

[Brief explanation of the drawing]

FIG. 1 is a side structural view of a truck showing a preferred embodiment of the engine cooling system for a transport vehicle according to the present invention, and FIGS. 2 and 3 are diagrams for explaining other embodiments of FIG. 1, respectively. A schematic side view of the truck, Figure jI-4 is a front view of the panel-shaped radiator which is the main part of the cooling unit, and Figure 5 is the v of Figure 4.
-V line arrow sectional view and Figure 6 are the same < Vl -VI I
7 is a sectional view taken along the same <Vt-■ line, FIG. 8 is a sectional view showing another modification of the embodiment shown in FIGS. 5 to 7, and FIGS. 10 is a plan view of a panel-shaped heater showing a modification of the embodiment shown in FIG. 4, respectively. In the figure, 1 is a side skirt, 2 is a panel-shaped radiator,
4 is the engine, 5 is the body, 6 is the opening for cooling water inlet,
7 is the opening for the cooling water outlet, 10 is the fI4 wall of the body, 1
1 is an underfloor panel of the body, 12 is an inlet chamber, 13 is an outlet chamber, 14 is a tube, 17, 18, 19 is a bowl strip, 20 is a panel, 24 is an opening for air venting, and 26 is an inclined tube. Patent applicant 4) Patent attorney representing Suzu Jidosha Co., Ltd.
Kinu Tani Shin Yushim Figure 5 + 7 No. 70

Claims (7)

[Claims] (1) An engine cooling device for a transport vehicle, characterized in that a radiator for cooling engine cooling water is formed into a panel shape, and the panel-shaped radiator is used as an outer panel of the body. (2) The engine cooling device for a transport vehicle according to claim 1, wherein the outer plate of the body is a side skirt. (3) The engine cooling device for a transport vehicle according to claim 1 or 2, wherein the outer plate of the body is a side wall. (4) The engine cooling device for a transport vehicle as set forth in claim 1, 2, or 3, wherein the outer panel of the body is an underfloor panel. (5) The above-mentioned panel-shaped radiator is constructed by polymerizing and adhering panels with bowl strips formed on at least one side from the left and right sides, and integrally molding an inlet chamber through which cooling water is passed, a tube, and an outlet chamber. An engine cooling system for a transport vehicle according to claim 1, 2, or 4, characterized in that: (6) An inlet chamber and an outlet chamber communicated with the tube are arranged opposite to each other, and an opening for a cooling water inlet is provided at the top of the inlet chamber, and an opening for a cooling water outlet is provided at the bottom of the outlet chamber. 6. The engine cooling device for a transport vehicle according to claim 5, further comprising an air vent opening at the top of the outlet chamber. (7) The engine of the carrier vehicle according to claim 6, wherein the tube is disposed obliquely so that the base of the outlet chamber is located higher than the base of the inlet chamber. Cooling system.