JP5769011B2 - Cooling device for vehicle engine - Google Patents

Description

  The present invention relates to a vehicular engine cooling apparatus, and more particularly, to a vehicular engine cooling apparatus that protects an air vent hose connecting a radiator and a gas-liquid separation tank from external force and facilitates air discharge.

As shown in FIG. 7, the vehicle 101 includes a cooling device 104 for cooling the engine 103 mounted in the engine room 102. A cooling device 104 for the engine 103 has a radiator 105 disposed in front of the engine room 102 and is connected to the engine 103 and the radiator 105 by a radiator inlet hose 106 and a radiator outlet hose 107 which are cooling water pipes through which cooling water circulates. The engine 103 is being cooled.
In addition, the cooling device 104 includes a gas-liquid separation tank 108 for discharging air mixed in the cooling water passage in the cooling water pipe. The gas-liquid separation tank 108 is on the side of the air cleaner 109 disposed on the side of the engine 103 in the vehicle width direction, and is further disposed on the outer side of the vehicle width direction with the battery 110 disposed on the outer side of the air cleaner 109 interposed therebetween. .
The cooling device 104 connects the radiator-side connecting portion 111 provided in the radiator 105 and the gas-liquid separation tank side connecting portion 112 provided in the gas-liquid separation tank 110 with an air vent hose 113, so that the air mixed into the cooling water passage is supplied. It is discharged to the gas-liquid separation tank 108 by the air vent hose 113. The air bleeding hose 113 is attached to the vehicle body side via a clip 114 in order to restrict vibration.

  In such an engine cooling device, the engine is mounted behind the radiator disposed in the front part of the engine room of the vehicle, and a gas-liquid separation tank is disposed on the side of the engine in the vehicle width direction and outside the air cleaner. In some cases, the radiator and the gas-liquid separation tank are connected by an air bleeding hose for discharging air mixed in the cooling water passage in the cooling water pipe. (Japanese Unexamined Patent Application Publication No. 2009-68337)

JP 2009-68337 A

By the way, in the structure of the cooling device shown in FIG. 7 and the Patent Document 1, the radiator side connecting portion provided in the radiator to which the air bleeding hose is connected is disposed on the front side of the air cleaner, and is outward from the vehicle width direction side portion of the air cleaner. A gas-liquid separation tank is arranged at a position far away from the radiator, and the radiator and the gas-liquid separation tank are connected via an air bleeding hose.
However, in the cooling device having such a structure, when the vehicle receives an external force from the front of the vehicle, the radiator may move to the rear of the vehicle and the radiator side connecting portion may contact the air cleaner. This contact may cause the air bleeding hose to fall out of the radiator side connecting portion.
Further, the air vent hose is bent outward in the vehicle width direction in the vicinity of the radiator side connecting portion and extends so as to be separated from the radiator side connecting portion. Generally, a hose used in a cooling system such as an air bleeding hose has a structure in which the air bleeding hose is difficult to extend as compared with a hose formed of a single rubber layer because a reinforcement system member is knitted. For this reason, when the vehicle receives an external force from the front of the vehicle, the radiator moves to the rear of the vehicle, the air vent hose is pulled by the radiator or the radiator side connecting portion, and the air vent hose is detached from the radiator side connecting portion. There was a risk of contact with peripheral parts.
Further, in the cooling device having such a structure, the distance between the radiator side connecting portion and the gas-liquid separation tank side connecting portion is increased, and the overall length of the air bleeding hose is increased. Curved or bent in the direction and the vehicle width direction. For this reason, air easily accumulates in a curved or bent portion in the air bleeding hose, and there is a possibility that the air mixed in the cooling water passage may not easily flow to the gas-liquid separation tank.
Also, if the user forgets to attach the middle of the air bleeding hose to the vehicle body and travels the vehicle, the air bleeding hose hangs down due to its own weight and the air bleeding hose is displaced or vibrated due to the vibration of the vehicle. . For this reason, the air bleeding hose hangs down or is displaced, and air tends to accumulate in the air bleeding hose, and there is a possibility that the performance of discharging the air mixed in the cooling water passage may deteriorate.

  An object of the present invention is to make it easy to discharge air mixed in cooling water piping in a cooling device for a vehicle engine and to protect an air bleeding hose when an external force is applied to the vehicle.

In the present invention, a radiator is disposed in a front portion of an engine room of a vehicle, an engine having a crankshaft directed in a vehicle width direction is mounted behind the radiator, and a turbocharger is provided between the engine and the radiator. And arranging an air cleaner on the side of the turbocharger in the vehicle width direction , connecting the turbocharger and the air cleaner by an intake hose, and on the air cleaner side of the engine in the vehicle width direction side And a gas-liquid separation tank is disposed on the vehicle rear side of the intake hose , the engine and the radiator are connected by a cooling water pipe through which cooling water circulates, and the radiator and the gas-liquid separation tank are cooled. In a vehicular engine cooling device connected by an air vent hose for discharging air mixed in a water pipe, the intake hose in front view of the vehicle By bending in an S shape or a crank shape, beneath the intake hose, a space is formed surrounded by the one side and the other side in the vehicle width direction and each of the intake hose and the air cleaner, the air vent hose the radiator-side connecting portion provided on the radiator to connect disposed to face the space portion, the lower portion of the air vent the air hose a hose and through the space connected to the radiator-side connecting portion It is characterized by that.

The cooling device for a vehicle engine according to the present invention has a structure in which the radiator side connecting portion is disposed so as to face the space surrounded by the S-shaped or crank-shaped intake hose and the air cleaner. When an external force is received from the front, the radiator-side connecting portion can enter the space surrounded by the intake hose and the air cleaner as the radiator moves rearward of the vehicle.
As a result, the cooling device for a vehicle engine according to the present invention can prevent the radiator side connecting portion from coming into contact with the air cleaner and protect the radiator side connecting portion and the air bleeding hose.
In the vehicle engine cooling device of the present invention, the radiator side connecting portion is disposed so as to face the space surrounded by the intake hose and the air cleaner, and the air bleeding hose penetrates the space portion and the radiator side connecting portion. With the structure connected to the air vent hose, the air vent hose can be extended substantially linearly from the radiator side coupling portion to the space side, and the overall length of the air vent hose can be shortened compared to the conventional structure.
Thus, the vehicular engine cooling device of the present invention can easily discharge the air mixed in the cooling water pipe from the radiator to the air bleeding hose.

FIG. 1 is a plan view of an engine room of a vehicle. (Example) FIG. 2 is a side view of the engine room of the vehicle. (Example) FIG. 3 is a front view of the engine room of the vehicle. (Example) FIG. 4 is an enlarged plan view of the vicinity of the air bleeding hose. (Example) FIG. 5 is an enlarged front view of the vicinity of the air bleeding hose. (Example) FIG. 6 is an enlarged side view of the vicinity of the air bleeding hose. (Example) FIG. 7 is a plan view of the engine room of the vehicle. (Conventional example)

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

1 to 6 show an embodiment of the present invention. 1-3, 1 is a vehicle, 2 is an engine room, 3 is an engine. The vehicle 1 has an engine 3 in which an engine 3 with a crankshaft 4 directed in the vehicle width direction is mounted, and a battery 5 is mounted on the vehicle width direction side (left) away from the vehicle width direction end of the engine 3. ing. The engine 3 drives the front wheels 6 via a transmission attached to the vehicle width direction end.
The engine 3 has an exhaust manifold 7 attached to the front side, and a turbocharger 8 is connected to the exhaust manifold 7. A catalytic converter 9 is connected to the turbocharger 8. Connected to the catalytic converter 9 is an exhaust pipe 10 that guides exhaust to the rear of the vehicle.
The engine 3 is arranged on the side (left side) of the turbocharger 8 in the vehicle width direction, and an air cleaner 11 is disposed in front of the battery 5. The air cleaner 11 takes in air through an intake duct 12 connected to the lower left part in the vehicle width direction. The air cleaner 11 connects the upstream end portion of the intake hose 13 to the upper portion on the right side in the vehicle width direction. The intake hose 13 is connected to the turbocharger 8 whose downstream end is disposed below the air cleaner 11.
As shown in FIG. 3, the intake hose 13 is curved from the air cleaner 11 to the right in the vehicle width direction, an upstream portion 13A, a middle flow portion 13B that curves from the upstream portion 13A and extends downward, and a curved portion from the middle flow portion 13B. The downstream portion 13C extends to the right in the vehicle width direction and is connected to the turbocharger 8. Thereby, the intake hose 13 is curved in an S shape or a crank shape when the vehicle 1 is viewed from the front. Between the intake hose 13 and the air cleaner 11, a space portion 15 surrounded by the upstream portion 13 </ b> A and the midstream portion 13 </ b> B of the intake hose 13 and the wall portion 14 on the right side in the vehicle width direction of the air cleaner 11 is formed.
The turbocharger 8 is connected to an upstream end of an intercool linelet hose 16. The intercool linelet hose 16 has a downstream end connected to the lower portion of the intercooler 17. The intercooler 17 is disposed on the front side of the engine 3 and on the right side in the vehicle width direction. The upstream end of the intercooler outlet hose 18 is connected to the upper part of the intercooler 17. The intercooler outlet hose 18 extends from the front upper part of the engine 3 to the left in the vehicle width direction, then curves and extends rearward, and is connected to the throttle body 19 on the rear side of the engine 3. The throttle body 19 is connected to an intake manifold 20 attached to the rear side of the engine 3.

The vehicle 1 includes a cooling device 21 for the engine 3. In the cooling device 21, a radiator 22 is disposed in the front part of the engine room 2. The engine 3 mounted in the engine room 2 is disposed behind the radiator 22. Further, the intercooler 17 is disposed on the right side of the radiator 22 in the vehicle width direction. The radiator 22 includes an upper tank portion 24 and a lower tank portion 25 above and below the core portion 23, respectively.
The upper tank portion 24 is connected to the engine 3 via a thermostat 27 by a radiator inlet hose 26. As shown in FIGS. 4 to 6, the radiator inlet hose 26 is a space 15 surrounded by the intake hose 13 and the air cleaner 11 from a thermostat 27 provided on the wall surface 28 at the left end of the engine 3 in the vehicle width direction. And is connected to the approximate center of the upper tank portion 24. The lower tank portion 25 is connected to the engine 3 via a water pump by a radiator outlet hose 29. The radiator outlet hose 29 passes from the lower tank portion 25 between the catalytic converter 9 and the intercooler 17 and is connected to a water pump provided at the right end of the engine 3 in the vehicle width direction.
The cooling device 21 cools the engine 3 by connecting the engine 3 and the radiator 22 with a radiator inlet hose 26 and a radiator outlet hose 26 which are cooling water pipes through which cooling water circulates.
The cooling device 21 includes a gas-liquid separation tank 30 in order to discharge air mixed in the cooling water passages in the radiator inlet hose 26 and the radiator outlet hose 29. As shown in FIG. 4, the gas-liquid separation tank 30 is disposed between the engine 3 behind the air cleaner 11 and the battery 5 on the air cleaner 11 side of the side of the engine 3 in the vehicle width direction. The cooling device 21 includes a radiator-side connecting portion 31 provided substantially at the center of the upper tank 24 of the radiator 22 and a gas-liquid separation tank side connecting portion 32 provided on the upper front side of the gas-liquid separation tank 30. Connected with. The cooling device 21 discharges the air mixed in the cooling water passage to the gas-liquid separation tank 30 by the air vent hose 33.
As shown in FIGS. 4 to 6, the radiator side connecting portion 31 of the radiator 22 that connects the air bleeding hose 33 includes an intake hose 13 and an air cleaner that are curved in an S shape or a crank shape when viewed from the front of the vehicle 1. 11 is arranged so as to face the space 15 surrounded by 11. The air bleeding hose 33 passes through the space 15 and is connected to the radiator side connecting portion 31 of the radiator 22. On the other hand, the gas-liquid separation tank side connecting portion 32 for connecting the air vent hose 33 is close to the wall surface 34 on the rear side of the air cleaner 11 and close to the wall surface 28 at the end in the vehicle width direction of the engine 3. Note that the air vent hose 33 is attached to a wall surface 14 facing the space portion 15 on the right side of the air cleaner 11 via the clip 35 by attaching a clip 35 to a portion in the middle of passing the space portion 15 in order to regulate vibration. Yes.

Thus, the cooling device 21 of the engine 3 has a structure in which the radiator side connecting portion 31 is disposed so as to face the space portion 15 surrounded by the air hose 13 and the air cleaner 11 that are curved in an S shape or a crank shape. Thus, when the vehicle 1 receives an external force from the front of the vehicle, the radiator side connecting portion 31 enters the space portion 15 surrounded by the intake hose 13 and the air cleaner 11 as the radiator 22 moves rearward of the vehicle. be able to.
Thereby, the cooling device 21 can prevent the radiator side connecting portion 31 from contacting the air cleaner 11 and protect the radiator side connecting portion 31 and the air bleeding hose 33.
Moreover, the cooling device 21 arranges the radiator side connecting portion 31 so as to face the space portion 15 surrounded by the intake hose 13 and the air cleaner 11, and the air bleeding hose 33 penetrates the space portion 15 and the radiator side connecting portion. With the structure connected to 31, the air bleeding hose 33 can be extended substantially linearly from the radiator side connecting portion 31 to the space 15 side, and the overall length of the air bleeding hose 33 can be shortened compared to the conventional structure.
Thereby, the cooling device 21 of the engine 3 makes it easy to discharge the air mixed in the cooling water passages in the radiator inlet hose 26 and the radiator outlet hose 29 which are cooling water pipes from the radiator 22 to the air bleeding hose 33. Can do.

Furthermore, the cooling device 21 of the engine 3 is attached to the air cleaner 11 via a clip 35 in the middle of the air bleeding hose 33 passing through the space 15 in order to restrict vibration of the air bleeding hose 33.
However, even if the user forgets to fix the middle of the air bleeding hose 33 to the clip 35 or when the middle of the air bleeding hose 33 comes off from the clip 35 when the vehicle is running, The intake hose 13 and the air cleaner 11 surrounding the air release hose 13 can restrict the air release hose 32 from being greatly displaced or vibrated, and can suppress the air release hose 33 from shaking greatly.
As a result, the cooling device 21 can reduce the amount of displacement and vibration of the air bleeding hose 33, so that it is difficult for air to accumulate in the middle of the air bleeding hose 33, and the performance of discharging the air flowing from the radiator 22 to the gas-liquid separation tank 30 Can be improved.

Further, the cooling device 21 of the engine 3 brings the gas-liquid separation tank side connecting portion 32 closer to the wall surface 34 on the rear side of the air cleaner 11 and closer to the wall surface 28 on the left end side in the vehicle width direction of the engine 3. Depending on the structure, the gas-liquid separation tank side connecting portion 32 can be positioned closer to the rear side of the radiator side connecting portion 31 in the vehicle width direction.
Therefore, when the vehicle 1 is viewed from above, the entire length of the air bleeding hose 33 can be extended substantially linearly in the vehicle front-rear direction, and the total length of the air bleeding hose 33 can be shortened compared to the conventional structure.
As a result, the cooling device 21 can suppress the air vent hose 33 from hanging down due to its own weight or being bent sharply, so that the air flowing in the air vent hose 33 can be smoothly fed from the radiator 22 to the gas-liquid separation tank. It can be poured into 30.

In the structure of the conventional cooling device shown in FIG. 7, when the radiator receives the external force from the front of the vehicle and the radiator moves to the rear of the vehicle, the air bleeding hose is pulled by the radiator or the radiator side connecting portion, There is a possibility that the air bleeding hose may come off from the part or contact with peripheral parts.
In contrast, the cooling device 21 of the engine 3 brings the gas-liquid separation tank side connecting portion 32 closer to the rear wall surface 34 of the air cleaner 11 and the wall surface 28 at the end of the engine 3 on the left side in the vehicle width direction. Since the air bleeding hose 33 can be extended in the vehicle front-rear direction by the structure close to the vehicle, the air bleeding hose 33 can be curved from a low position to a high position of the vehicle 1.
And when the vehicle 1 which provided such a structure receives external force from the vehicle front, the radiator 22 or the radiator side connection part 31 moves to the vehicle rear, pushes the air bleeding hose 33 to the vehicle rear, The intermediate portion can be bent so as to hang downward from the vehicle.
As a result, the air bleeding hose 33 is not pulled by the radiator side connecting portion 31, and further, the air bleeding hose 33 can be prevented from contacting the peripheral components by bending the air bleeding hose 33 downward in the vehicle.
As a result, the cooling device 21 can prevent the air bleeding hose 33 from falling off the radiator side connecting portion 31 and can protect the air bleeding hose 33.

  The present invention facilitates the discharge of air mixed in the cooling water piping, and can protect the air bleeding hose when an external force is applied to the vehicle. The arrangement of various piping in the engine room It is possible to apply to.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Engine room 3 Engine 4 Battery 8 Turbocharger 11 Air cleaner 13 Intake hose 15 Space part 21 Cooling device 22 Radiator 26 Radiator inlet hose 29 Radiator outlet hose 30 Gas-liquid separation tank 31 Radiator side connection part 32 Gas-liquid separation tank Side connection 33 Air bleeding hose

Claims (2)

A radiator is arranged at the front of the engine room of the vehicle, an engine having a crankshaft directed in the vehicle width direction is mounted behind the radiator, a turbocharger is arranged between the engine and the radiator , An air cleaner is disposed on the vehicle width direction side of the turbocharger, the turbocharger and the air cleaner are connected by an intake hose , the air cleaner side of the engine width direction side of the engine , and the A gas-liquid separation tank is arranged on the vehicle rear side from the intake hose , the engine and the radiator are connected by a cooling water pipe through which cooling water circulates, and the radiator and the gas-liquid separation tank are connected to the cooling water pipe. In a vehicular engine cooling device connected with an air vent hose for discharging mixed air, the intake hose is formed in an S shape or in a front view of the vehicle. By bending into a crank shape, beneath the intake hose, in order to form a space surrounded by one side and the other side respectively the intake hose by said air cleaner in the vehicle width direction to connect the air vent hose and wherein the radiator-side connecting portion provided in the radiator is disposed to face the space portion, and connects the air vent hose below the intake hose and the radiator-side connecting portion through the space A cooling device for a vehicle engine.   The gas-liquid separation tank side connecting portion provided in the gas-liquid separation tank to which the air vent hose is connected is brought close to the wall surface on the rear side of the air cleaner and arranged close to the wall surface at the end in the vehicle width direction of the engine. The cooling device for a vehicle engine according to claim 1.

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