JP2548192Y2 - Engine cooling structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling structure for an engine in which a radiator and an exhaust manifold are arranged to face each other.

[0002]

2. Description of the Related Art Conventionally, as shown in Japanese Patent Publication No. 63-7967, for example, a radiator is disposed in the engine room of a vehicle in front of a vehicle body, and a horizontal engine is disposed behind the radiator. The structure is generally known. In the case where the radiator and the engine are arranged as described above, usually, an exhaust hold is arranged on the side of the engine body facing the radiator on the front side of the vehicle body.

[0003]

When the exhaust manifold is located opposite the radiator as described above, the distance between the engine body having the exhaust manifold and the radiator is made relatively large, so that the distance to the radiator is increased. Although the effect of exhaust heat is reduced, this requires a large space in the engine room. For this reason, it is required to reduce the distance between the engine body and the radiator.

[0004] However, simply reducing the above-mentioned interval,
Since a considerable amount of heat is transmitted to the radiator due to radiation from the exhaust manifold, the cooling performance of the radiator is reduced. Further, various members attached to the radiator are adversely affected by the exhaust heat. For example, when the oil cooler is built in the radiator and the outlet of the oil cooler is provided on the rear side surface of the radiator, the oil cooler outlet is heated and the function of the oil cooler is hindered. When a rubber mount is provided on the mounting portion so as to have the function of the dynamic damper, there is a problem that the rubber mount is easily deteriorated by heat.

The present invention solves the above-described problem. Even when the distance between the engine body having the exhaust manifold connected to the front side of the vehicle and the radiator in front of the engine body is reduced, the radiator and its It is an object of the present invention to provide a cooling structure for an engine that can prevent an adverse effect of exhaust heat on an attached member.

[0006]

According to the present invention, there is provided a vehicle in which a radiator is disposed at a front portion of a vehicle body and an exhaust manifold is connected to a front side of the vehicle body of an engine body facing the radiator. A low-pressure side hose for an air conditioner is arranged in a space interposed between the manifolds, and at least a part of the low-pressure side hose for an air conditioner overlaps with the exhaust manifold in a front view. is there.

In this configuration, when an oil cooler is built in the lower tank of the radiator, its discharge port is provided on the side of the radiator facing the exhaust manifold, and a low-pressure side hose for an air conditioner is connected to the discharge port of the oil cooler. Preferably, it is arranged to pass through a position between the exhaust manifold.

When a rubber mount is provided on the lower mounting portion of the radiator, it is preferable that the low-pressure side hose for the air conditioner is arranged to pass through the side of the rubber mount on the engine body side.

The radiator has two sides on the side of the engine body.
When two electric fans are arranged in parallel in the vehicle width direction, it is preferable that the low pressure side hose for an air conditioner is arranged to pass through a valley between the two fans.

[0010]

According to the above construction, the low-pressure side hose for the air conditioner has a very low temperature, and the low-temperature hose is interposed between the radiator and the exhaust manifold, so that the heat from the exhaust manifold and the radiator and its attached members are removed. Is suppressed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings.

Referring to FIGS. 1 to 3, an engine body 2 is disposed in the engine room 1 of the vehicle at the rear side, and a radiator 3 is disposed at the front side.

The engine main body 2 has a lateral arrangement in which the output shaft extends in the vehicle width direction. An exhaust manifold 4 is connected to a front side surface of the engine body 2 facing the radiator 3, and an exhaust pipe 5 connected to the exhaust manifold 4 extends rearward from below the engine body 2. I have. An air conditioner compressor 6 is attached to one end (one side in the vehicle width direction) of the engine body 2. On the other end of the engine body 2, an automatic transmission 7, a differential, and the like, which are connected to the engine output shaft, are arranged. The radiator 3 is located at the front of the vehicle, and has a lower portion on both sides supported by a vehicle via a rubber mount 10 so as to have a function as a dynamic damper. It is attached to the frame member 12 via rubber. Bracket 1 above
1 is provided with a vertically elongated bolt communication hole 13 at a bolted portion to the frame member 12 and a radiator 3.
The mounting position can be adjusted in these directions by providing a horizontally elongated bolt communication hole 14 at the bolt stop portion to the bracket 11 and the bracket 11 and the frame member 1.
2 is provided with a corresponding positioning bead 15.

On the side of the radiator 3 on the vehicle rear side, two electric fans 16, 17 are arranged in parallel in the vehicle width direction. The radiator 3 has an automatic transmission 7.
An oil cooler (not shown) for cooling the hydraulic oil is built in, and an inlet 20 and an outlet 21 of the oil cooler are provided on a side surface of the radiator 3 on the vehicle rear side. The inflow port 20 is provided at one end of the radiator 3 corresponding to the automatic transmission 7, and the discharge port 21 is provided at a lower portion of the radiator near a position between the fans 16 and 17. The inflow port 20 and the discharge port 21 are connected to a hydraulic circuit of the automatic transmission 7 by hoses 22 and 23, respectively.

A cooling water hose 24 for sending cooling water from the radiator 3 to the engine body 2 and a cooling water hose 25 for sending cooling water from the engine body 2 to the radiator 3 are connected to the radiator 3 and the engine body 2. ing. The compressor 6 of the air conditioner is connected to a low-pressure side air-conditioning hose 26 for flowing refrigerant into the compressor 6 and a high-pressure side hose 27 for discharging refrigerant compressed by the compressor 6.

Particularly, as a feature of the present invention, the low pressure side hose 26 for the air conditioner is disposed in a space sandwiched between the radiator 3 and the exhaust manifold 4. That is, the air-conditioner low-pressure side hose 26 does not pass between the radiator 3 and the exhaust manifold 4 simply by being connected to the compressor 6 from one side in the vehicle width direction in the engine room. It is formed so as to pass through a space between the radiator 3 and the exhaust manifold 4. Then, at least a part of the low pressure side hose 26 for the air conditioner overlaps with the exhaust manifold 4 in a front view (see FIG. 3).

More specifically, the arrangement of the low pressure side hose 26 for the air conditioner will be described. The hose 26 extends from one side in the vehicle width direction of the engine room 1 through the space above the rear of the radiator 3 and has a vehicle width. And extends from this position to a lower portion of the radiator 3 through a valley portion 28 existing between the cowlings of the fans 16 and 17. Then, the radiator 3 is bent laterally from the position below the radiator 3 and is located behind the discharge port 21 of the oil cooler (discharge port 2).
1 and a position between the exhaust manifold 4) and the compressor 6 through the rear of a rubber mount 10 provided at a lower radiator-side end mounting portion close to the exhaust manifold 4. Have been.

A cooling water hose 24 for sending cooling water from the radiator 3 to the engine body 2 is arranged so as to pass through a position between the compressor 6 and the exhaust manifold 4 (see FIG. 3).

According to the cooling device of this embodiment as described above, the very low temperature air-conditioner low pressure side hose 26 is interposed between the radiator 3 and the exhaust manifold 4, and the low temperature hose 26 allows the exhaust heat to be generated. Is transmitted to the radiator 3 side. In particular, when the hose 26 passes behind the discharge port 21 of the oil cooler, the discharge port 21 is protected from exhaust heat, and the function of the oil cooler is maintained. Further, since the hose 26 passes behind the rubber mount 10 at the lower end of the radiator-side end, the rubber mount 10 is also protected from exhaust heat, and the function as a dynamic damper is maintained.

The discharge port 21 of the oil cooler is provided at a position between the fans 16 and 17 and the low pressure side hose 26 for the air conditioner is connected to the fans 16 and 17.
Since they are arranged so as to pass through the valley and pass behind the discharge port 21, they are laid out compactly.

Therefore, even if the exhaust manifold 4 and the radiator 3 are brought closer to each other to narrow the space therebetween, heat damage does not occur and the hoses are laid out without difficulty.

Further, since the cooling water hose 24 passes between the compressor 6 and the exhaust manifold 4, heat damage to the compressor 6 is also prevented.

[0023]

As described above, according to the present invention, the low-pressure side hose for the air conditioner is arranged in the space between the radiator and the exhaust manifold, and at least a part of the low-pressure side hose for the air conditioner is viewed from the front. Since it overlaps with the exhaust manifold, the low-temperature side low-pressure hose for the air conditioner can prevent the influence of exhaust heat on the radiator and the accessory members. Therefore, the radiator and the exhaust manifold can be brought close to each other while avoiding heat damage and the like, and the whole can be made compact.

In addition, a discharge port of an oil cooler is provided on a side surface of the radiator facing the exhaust manifold.
When the low pressure side hose for the air conditioner is positioned between the discharge port of the oil cooler and the exhaust manifold, it is possible to reliably prevent the oil cooler from being damaged by heat. Further, when the low-pressure side hose for the air conditioner is disposed so as to pass through a side portion of the rubber mount on the engine body side, it is possible to prevent the rubber mount from being damaged by heat.

Also, two electric fans are arranged in parallel in the vehicle width direction on the side of the radiator on the main body side of the engine, and the low-pressure side hose for the air conditioner is arranged to pass through a valley between the fans. With such a structure, a compact layout can be obtained by utilizing the dead space between both fans.

[Brief description of the drawings]

FIG. 1 is a plan view of a structure according to an embodiment of the present invention.

FIG. 2 is a side view of the same structure.

FIG. 3 is a front view of the same structure.

[Explanation of symbols]

 2 Engine body 3 Radiator 4 Exhaust manifold 6 Compressor of air conditioner 10 Rubber mount 16, 17 Fan 21 Oil cooler outlet 26 Low pressure side hose for air conditioner

Claims (4)

(57) [Scope of request for utility model registration] In a vehicle in which a radiator is disposed at a front portion of a vehicle body and an exhaust manifold is connected to a front side surface of the engine body facing the radiator, a space sandwiched between the radiator and the exhaust manifold. a, is disposed low-side hose for an air conditioner, and a front
At least part of the low pressure side hose for air conditioner
An engine cooling structure characterized by being overlapped with the air manifold . 2. A discharge port of an oil cooler built in a lower tank of the radiator is provided on a side of the radiator facing the exhaust manifold, and a low-pressure side hose for an air conditioner determines a position between the discharge port of the oil cooler and the exhaust manifold. 2. The cooling structure for an engine according to claim 1, wherein the cooling structure is arranged so as to pass therethrough. 3. A rubber mount is provided at a lower mounting portion of the radiator, and a low-pressure side hose for an air conditioner is disposed so as to pass through a side portion of the rubber mount on the engine body side. An engine cooling structure as described. 4. Two electric fans are arranged in parallel in the vehicle width direction on a side surface of the radiator on the engine body side, and the low-pressure side hose for the air conditioner is arranged to pass through a valley between the two fans. The cooling structure for an engine according to claim 1, wherein: