JPS61150823A - Car engine cooling device - Google Patents

Abstract

PURPOSE:To increase space in an engine room and improve the radiating performance of a radiator by forming a radiator in a panel form and using this panel form radiator as an air deflector. CONSTITUTION:An air deflector 11 consists of four layers of piled panel form radiators 1A-1D. And, an inlet chamber 7 and an outlet chamber 8 are positioned on the both sides in the car width direction and along the longitudinal direction of a cab, and a group of tubes 9 are placed in multistage in the longitudinal direction of the cab and along the car width direction allowing a cooling water to flow. The cooling water heated by an engine is introduced to the air deflector 11, where its heat is radiated being exchanged with air, and the cooling water is again returned to the engine.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vehicle engine cooling system, and more particularly to a vehicle engine cooling system in which an air deflector has a radiator function.

[Prior Art] A radiator installed in a water-cooled engine is generally installed at the front of the engine room in the direction of travel, and is powered by cooling air introduced from the air intake at the front of the vehicle or by a cooling fan driven by the engine. The cooling air is drawn in to cool the cooling water.

[Problem that the invention attempts to solve] However, in the past, there were the following problems.

■ The radiator is placed at the front of the vehicle to use the wind from the vehicle as cooling air.

However, the space at the front of the vehicle is narrow due to the aerodynamic characteristics of the body and body styling, and forced ventilation may be required because the required amount of cooling air cannot be achieved with just the running air. Therefore, a cooling fan is installed for forced ventilation, but the cooling fan is driven by a portion of the engine output. Therefore, part of the engine output is consumed to cool the cooling water, resulting in poor fuel efficiency.

To deal with this, a system has been adopted in which the cooling fan is driven by an electric motor only when necessary, such as when the cooling water is overheated, but this has not been able to sufficiently improve fuel efficiency.

(2) Furthermore, the radiator must have a considerable heat dissipation area, and the required diameter of the cooling fan, etc., is set in accordance with the heat dissipation capacity of the radiator. Therefore, these radiators, fans, etc. occupy a considerable amount of space in the engine room, which has been an obstacle to saving space in the engine room.

■ Furthermore, it is necessary to form an air intake port on the front of the vehicle in order to take the running wind into the radiator. For this reason,
This caused deterioration of the body's aerodynamic characteristics, such as an increase in air resistance, and was a constraint on body styling.

■ On the other hand, in order to make the radiator itself compact and exhibit high heat dissipation performance, many improvements have been made, such as improvements to the heat dissipation fins, cross-flow, and the adoption of negative-type radiators, but there is no way to fundamentally solve the problems mentioned above. Nothing like this has yet been devised.

[Object of the Invention] The present invention was devised in view of the above-mentioned problems, and its purpose is to provide a radiator function to an air deflector that has a wide surface area and through which the traveling wind flows, thereby solving the conventional problems. This not only makes it possible to eliminate the radiator of
We also eliminated the cooling fan and fan motor that were required for the radiator, improving fuel efficiency and improving the aerodynamic characteristics of the body.
To provide an engine cooling device for a vehicle that can save space in an engine room and improve the degree of freedom in body squilling design, and also exhibits sufficient cooling performance.

[Summary of the Invention] According to the present invention, a radiator for cooling engine cooling water is formed into a panel shape, and the panel-shaped radiator itself constitutes an air deflector.

[Example] A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

First, a panel-shaped radiator that is essential to the configuration of the present invention will be explained. As shown in FIG. 15, the panel-shaped radiator 1 is constructed by overlapping a pair of panels 3 in which bowl strips 2 are formed in a predetermined arrangement and bonding them with a mating flange 4. Opening 5. Outlet opening 6. Inlet chamber7. Outlet chamber8. In addition, it is formed by integrally forming nine groups of tubes. An inlet chamber 7 and an outlet chamber 8 formed on the left and right sides of the panel are for temporarily storing cooling water flowing in and out, and a large number of tubes 9 are formed in parallel between these chambers 7 and 8.

The engine cooling water is introduced through the inlet opening 5, subjected to heat exchange through a group of 9 multi-stage tubes, and then flowed out through the outlet opening 6.

Note that the cooling water inlet opening 5. A cap 10 is attached to the outlet opening 6 by welding or brazing.

Further, the cross-sectional areas of the chambers 7 and 8 are both designed to be more than twice the total cross-sectional area of the tube group 9. This is a consideration for smoothing the flow of water within the tube 9.

Furthermore, the panels 3 to be overlapped are not limited to flat plates, but may have curved surfaces, and the bowl strips 2 may be formed only on one panel 3, and the bowl strips may not be formed on the other panel 3.

The panel-shaped radiator 1 configured in this manner and for cooling engine cooling water is applied to an air deflector 11 as shown in FIGS. 1 to 5. In this embodiment, an air deflector 11 for a truck is illustrated, and a cab 1
2, and the front edge 14 of the roof 13
A continuous curved surface extends from the front edge of the luggage compartment (not shown) to the front edge of the luggage compartment, which is not shown, to change and guide the flow direction of the traveling wind, thereby improving aerodynamic characteristics.

Here, the present invention forms an air deflector 11 using the above-mentioned panel-shaped radiator 1. In other words, the air deflector 11 has a wide surface area and through which the traveling wind flows.
It has a radiator function.

In this embodiment, the air deflector 11 is 4.

It is constructed by stacking panel-shaped radiators IA, 1B, IC, and ID. In particular, the front panel surface 15 of the panel-shaped radiator 1A forming the outermost surface of the air deflector 11 is formed to be smooth so as not to disturb the airflow. Also, panel radiator 1A
~1D is arranged so that the inlet chamber 7 and the outlet chamber 8 are located along the length direction of the cab on both sides in the inside direction, and the 19 groups of chews are cooled in multiple stages along the inside direction of the cab. It is designed to circulate water.

Further, as shown in FIGS. 1 and 4, the panel-shaped radiators 1A to 1D are connected to the vehicle body, in the illustrated example, to the front edge 14 of the cab roof 13 and A cooling air introduction portion 18 is formed on a front edge 17 of the panel in the vehicle running direction, partitioned by a mounting support plate 16 (described later) disposed in the cab 12 to support mounting of the panel-shaped radiators 1A to 1D. A cooling air outlet portion 20 is formed at the rear edge 19 in the vehicle running direction.

More specifically, the cooling air introduction section 18 extends the front edge of the panel-shaped radiator 1A on the surface layer above the front edge 14 of the cab roof 13, and a pair of mounting holes are installed below this extension 21 in the direction of the inside of the vehicle. It is configured as a section 9111 partitioned into the support plate 16. On the other hand, the cooling air outlet section 20 is configured as a gap between the panel-shaped radiators 1A to 1D that are stacked on top of each other in the height direction and whose both sides in the inside direction of the vehicle are partitioned by the mounting support plates 16. The panel-shaped radiators 1A to 1D form a guide passage 22 between the cooling air introduction section 18 and the outlet section 20 for guiding the introduced cooling air. Therefore, the vehicle running wind flows from the surface of the air deflector 11 and the cooling air introduction part 18 to the guide passage 22.
The air flows between the panel-shaped radiators 1A to 1D via the radiators 1A to 1D.

Furthermore, as shown in FIG. 1, the cooling air introduction section 18 is provided with an opening/closing switch 23 for opening and closing it.

The opening/closing door 23 is formed in the shape of a flat plate along the inside direction of the vehicle, and is hingedly connected to the front edge 14 of the cab roof 13 so as to be tiltable. The opening/closing door 23 opens the cooling air introduction section 18 during normal running to introduce cooling air into the guide passage 22 to improve the heat exchange efficiency, and on the other hand closes the cooling air introduction section 18 during high speed driving. A smooth continuous surface is formed from the front edge 14h of the cab roof 13 to the surface of the air deflector 11, thereby improving aerodynamic characteristics.

Furthermore, as shown by two-dot chain lines in FIG. 5, radiation fins 24 may be interposed between the panel-shaped radiators 1A to 1D to improve heat radiation performance. In this embodiment, corrugated fins are used and are arranged in a wave shape along the inside of the vehicle so as not to obstruct the flow of cooling air.

On the other hand, FIGS. 5 to 8 show panel-shaped radiators 1A to 1.
A structure for mounting D in a stacked manner is shown. On both sides of the cab roof 13 in the vehicle interior direction, a pair of mounting support plates 16 are arranged in parallel at intervals so as to sandwich the panel-shaped radiators 1A to 1D. These mounting support plates 16 are
The outer edge shape is curved continuously along the vehicle length, being lower on the front edge 14 side and higher on the luggage compartment side so as to smoothly connect the front edge 14 of the cab roof 13 and the luggage compartment. , the whole is shaped like a fan, and panel-shaped radiators 1A to 1D are attached at intervals along the outer edge shape in the height direction. Further, this mounting support plate 16 has multiple mounting 7 langes 25 in its height direction, each of which has a combined 7 flange 4 for mounting the panel-shaped radiators 1A to 1D.
can be attached with bolts, nuts, etc. Figures 6 and 7
The figure shows a configuration for attaching panel-shaped radiators 1A to 1D to each mounting flange 25 in multiple layers.

The upper mounting 7 lange 25 is directly below the mounting 7 lange 2.
In order to avoid blocking the bolt mounting holes 26 of No. 5 and interfering with the mounting work, the upper mounting flange 25 is made to correspond to the bolt mounting holes 26 formed in the mounting flange 25 directly below in order to expose them. A cutout 27 is provided. Furthermore, FIG. 8 shows the panel-shaped radiator 1 as described above.
A structure for attaching the attachment support plate 16 to the cab roof 13 to which A to 1D are attached in a stacked manner is shown. A fixing fitting 29 is attached to the side edge 7 flange 28 of the cab roof 13.
The base M30ffi is superimposed on the base M30ffi, and the base end of the mounting support plate 16 is fixed to this base 30. Also, between the base end of the mounting support plate 16 and the base 30,
A reinforcing member 31 is provided for backing.

On the other hand, the laminated structure of the spring square radiators 1A to 1E is as shown in FIG.
~1E inlet chamber 7. If the interval between the outlet chambers 8 is changed in the order in which they are stacked, or if the upper inlet chamber 7 is placed inward in the direction of the inside of the car, the position of the lower outlet chamber 8 is conversely placed inward in the direction of the inside of the car. to let, etc.
Inlet chamber7. The outlet chambers 8 may be stacked so as to be offset far from each other along the stacking direction. With this configuration, the panel-shaped radiator 1A
By narrowing the interval between ~1E, compactness in the height direction can be achieved, and more panel-shaped radiators can be stacked (see FIG. 5).

Furthermore, as shown in FIGS. 1 and 10, the mounting support plate 16 constituting the air deflector 11 has an air intake that is partially opened and communicated with the guide passage 22 on the back side for ventilation of cooling air. A mouth 32 is formed. In this embodiment, narrow slits that are vertically elongated in the height direction are arranged in parallel in the vehicle length direction to form a grill shape, and guide the running wind to the guide passage 22.

Further, FIGS. 11 to 13 show a mounting structure for the cooling water pipe 33 of the engine. In particular, FIG. 11 shows the application to a tilting cab. In a tilt type cab, a cab 12 equipped with an air deflector 11 is placed at a tilt center 3 with respect to a body frame 34 on which an engine is mounted.
Tilt 5 times.

In this embodiment, the lower floor surface 3 of the cab 12
The cab-side cooling water pipe 33a fixed to the side member 37 of No. 6 with a clip 38 and the frame-side cooling water pipe 33b fixed to the vehicle body frame 34 with a clip 38 are flexible in a bellows shape or the like at the tilt center 35. The panel-shaped radiators 1A to 1D are connected to each other via a flexible water pipe 39, which absorbs relative movement of the panel-shaped radiators 1A to 1D due to tilting of the cab 12. The cooling water pipe 33 is also fixed with a clip in the cab back (FIG. 14).

Next, we will discuss the effect.

As shown in FIG. 14, a cooling water pipe 33 is connected between the engine 39 and the air deflector 11 constituted by the panel-shaped radiator 1, specifically the inlet chamber 7 and the outlet chamber 8. is circulated by a pump (not shown). The cooling water heated by the engine 39 is led to the air deflector 11, where it exchanges heat with the air and radiates heat, and then is returned to the engine 39 again.

By the way, in the present invention, the radiator 1A is made into a panel.
By configuring the air deflector 11 with ~1D and giving the air deflector 11 a radiator function, the air deflector 11 having a wide surface area can sufficiently exchange heat with a large amount of freely flowing traveling wind. That is,
The air deflector 11 itself can exhibit sufficient heat dissipation performance, and can ensure a heat exchange rate comparable to that of the conventional one.

Therefore, the radiator, cooling fan, and electric motor that were conventionally provided in the engine room can be eliminated all at once. As a result, it is possible to eliminate part of the engine output from being consumed for driving the cooling fan and the like, thereby achieving improvement in fuel efficiency.

Furthermore, as a result of eliminating the radiator etc., sufficient space can be saved in the engine room.

Furthermore, with the removal of the radiator in the engine room, there is no need to create a large air intake at the front of the vehicle, so the air intake, which conventionally contributed to an increase in air resistance, is blocked and the front shape improves aerodynamics. In addition, the degree of freedom in designing the body squilling can be improved. Unlike bulldozers, forklifts, etc., this improvement in aerodynamic characteristics is particularly significant for trucks that require high speed.

On the other hand, the panel-shaped radiator 1 can be manufactured more easily and inexpensively than conventional radiators because the chamber 7.8, the tube group 9, etc. can be integrally molded by simply bonding two panels 3 together.

Furthermore, in this embodiment, since the air deflector 11 is constructed by stacking a plurality of panel-shaped radiators 1, the heat radiation area is further expanded, and sufficient heat exchange performance can be ensured. In addition, the panel-shaped radiator 1 forming the air deflector 11 is partitioned into the vehicle body (cab roof, etc.) and cooling air introduction/outlet portions 18 and 20 are formed at the leading and trailing edges in the vehicle running direction. radiator 1
Cooling air can be sufficiently circulated along the front and back surfaces of A to 1D, and heat dissipation performance can be improved from this side as well. Furthermore, the air intake port 32 formed by partially opening the mounting support plate 16 of the air deflector 11 also improves the flow of cooling air to the panel-shaped radiators IA to 1D, thereby ensuring heat dissipation performance. In addition, panel-shaped radiators 1A to 1
The heat exchange area is expanded by the heat radiation fins 24 interposed between the two.

On the other hand, the cooling air introduction section 18 has an opening/closing mechanism for opening and closing it.
! 23, it is possible to ensure cooling air and aerodynamic characteristics during normal driving and during high-speed driving, and it is possible to achieve improvements in fuel efficiency, etc. The opening/closing operation of the opening/closing 1ji23 can be driven by an actuator (not shown) or the like by sending a signal from a control switch installed in the cab or an electronic control circuit that senses the vehicle speed and controls various devices. good.

Furthermore, the panel-shaped radiators 1A-1D are connected to their inlet chambers 7. Compactness can be achieved by stacking the outlet chambers 8 so as to be alternately offset along the stacking direction.

Further, the distance between the engine 39 and the air deflector 11 is relatively short, so the length of the cooling water pipe 33 is kept short, and pipe resistance loss is also suppressed.

Further, the inlet opening 5 and the outlet opening 6 of each of the stacked panel-shaped radiators 1A to 1D are connected in parallel to the cooling water pipe 33 of the engine through a manifold-shaped rubber hose (not shown). .

[Effects of the Invention] In summary, according to the present invention, the following excellent effects are achieved.

(1) By forming the radiator in a panel shape and configuring this panel-shaped radiator as an air deflector, the air deflector with a wide surface area has a Kujita function, ensuring heat dissipation performance comparable to conventional ones. While conventional radiator.

Cooling fans and the like can be removed all at once, improving fuel efficiency and saving space in the engine room.Furthermore, eliminating the cooling fan is advantageous in terms of noise control.

■ Also, as a result of being able to remove the conventional radiator that was installed at the front of the vehicle in the engine room, the air intake that was formed at the front of the vehicle can be eliminated, making it possible to design a free body styling with excellent aerodynamic characteristics. .

(3) By using a panel-shaped radiator, it can be easily manufactured at low cost.

(Φ) The heat dissipation performance of a panel-shaped radiator can be improved by making the panel-shaped radiator multi-layered, and by installing cooling air intake/outlet ports, air intake ports, and heat dissipation fins.

(2) By providing the cooling air introduction section with an opening/closing door for R-closing the cooling air introduction section, the cooling air introduction section can be opened and closed as appropriate using this opening/closing door, thereby ensuring improvement in heat dissipation performance and aerodynamic characteristics.

[F]) Compactness can be achieved by arranging the inlet chambers and outlet chambers of the panel-shaped radiator provided in multiple layers so as to be offset from each other along the stacking direction.

[Brief explanation of the drawing]

Fig. 1 is an enlarged side view of a truck cab showing a preferred embodiment of the present invention, Fig. 2 is a front view of the cab, Fig. 3 is a side view thereof, and Fig. 4 is taken along the rV-IV line in Fig. 2. 5 is a sectional view taken along the line v-v in FIG. 3;
The figure is a perspective view of the mounting support plate adopted in the present invention, FIG. 7 is a plan view thereof, FIG. 8 is a front sectional view showing the mounting structure of the mounting support plate to the cab roof, and FIG. 9 is a panel-shaped radiator. 10 is a sectional view taken along the line X--X in FIG. 1 showing the air intake port adopted in the present invention, and FIG. 11 is a front sectional view of the air deflector showing another laminated state. FIG. An enlarged side view of the tilt center section showing the state of the water piping, Figure 12 is a sectional view taken along the line XI [-X■ in Figure 11, and Figure 13 is a sectional view taken along the xi-xm line in Figure 11. , FIG. 14 is an equipment system diagram of engine cooling water piping, and FIG. 15 is a front view showing the basic configuration of a panel-shaped radiator employed in the present invention. In the figure, 1, 1A to 1D are panel-shaped radiators, 2 is a bowl strip, 3 is a panel, 7 is an inlet chamber, 8 is an outlet chamber, 9 is a tube, 11 is an air deflector, 12 is a vehicle body.
18 is a cooling air inlet, 20 is a cooling air outlet, and 23 is an open rjII #! , 24 is a radiation fin, 32 is an intake port, and 39 is an engine.

Claims (8)

[Claims] (1) A vehicle engine cooling device 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 air deflector. (2) The above-mentioned panel-shaped radiator is formed by polymerizing and adhering panels that have a bowl strip on at least one side, and integrally molding an inlet chamber, a tube, and an outlet chamber for circulating cooling water between them using the bowl strip. A vehicle engine cooling system according to claim 1, comprising: (3) Claim 1 or 2, wherein a plurality of the panel-shaped radiators are stacked to form an air deflector.
The engine cooling system for the vehicle described in Section 1. (4) The engine cooling system for a vehicle according to claim 3, wherein the plurality of stacked panel-shaped radiators are stacked with their inlet chambers and outlet chambers offset in a staggered manner along the stacking direction. (5) The panel-shaped radiator has a cooling air introduction section partitioned into the vehicle body at its leading edge in the direction of vehicle travel in order to circulate cooling air along its front and back surfaces, and has a cooling air introduction section at its rear edge in the direction of vehicle travel. An engine cooling system for a vehicle according to any one of claims 1 to 4, which includes a cooling air outlet. (6) The engine cooling system for a vehicle according to claim 5, wherein the cooling air introduction section has an opening/closing door that opens and closes the cooling air introduction section. (7) The engine cooling device for a vehicle according to any one of claims 1 to 6, wherein the air deflector is formed by partially opening the air deflector and has an intake port for ventilating cooling air. . (8) The engine cooling device for a vehicle according to any one of claims 1 to 7, wherein the panel-shaped radiator has heat radiation fins.