JP2018197044A - Cooling structure of vehicle internal combustion engine - Google Patents

Abstract

To provide a cooling structure for an internal combustion engine for a vehicle that can easily prevent the heat dissipation effect of a heat exchanger from being reduced without being restricted by the design of the vehicle. In a cooling structure of an engine 11, a cylindrical portion 21 is formed on a front bumper 2 so as to be spaced upward from a turbocharger 15 and extend rearward from the front bumper 2. A cutout portion 21A is formed in the cylindrical portion 21, and the cutout portion 21A faces the radiator 8 in the vertical direction and opens toward the turbocharger 15. [Selection] Figure 6

Description

  The present invention relates to a cooling structure for an internal combustion engine for a vehicle.

  In a vehicle, in order to cool an in-vehicle device installed in the engine room, traveling wind is taken into the engine room through an opening of a front bumper provided in a front portion of the vehicle. By the way, since the front bumper is provided in front of the vehicle, there are design restrictions such as a positional relationship between the license plate and the opening in order to provide an opening in the front bumper.

  On the other hand, the mounting portion of the license plate is integrally formed with the front bumper at the middle position between the front bumper and the rear surface of the front bumper on the front side of the front of the vehicle. There is known a cooling wind intake device in which an opening for taking in air is formed between the upper end of the cooling air (see Patent Document 1).

  This cooling air intake device takes in the cooling air from the opening formed between the upper part of the front bumper and the mounting part and the upper end of the license plate, so that the appearance of the vehicle is maintained and the rear of the front bumper is maintained. The arranged heat exchanger is cooled.

Japanese Patent Laid-Open No. 2005-247087

  In such a conventional air intake device, when an engine having an auxiliary machine that generates heat is installed behind the heat exchanger, the heat exchanger is exposed to the heat of the auxiliary machine, The heat dissipation performance of the heat exchanger will deteriorate.

  The present invention has been made paying attention to the above-described circumstances, and is a vehicle internal combustion engine that can easily prevent the heat dissipation effect of the heat exchanger from being lowered without being restricted by the design of the vehicle. The object is to provide a cooling structure.

  The present invention includes a front panel that is provided at a front end portion of the vehicle so as to extend in the width direction of the vehicle and takes air into an engine room, and a heat exchanger that is installed rearward with respect to the front panel. A cooling structure for an internal combustion engine for a vehicle, which is installed behind the heat exchanger in the engine room and includes an auxiliary machine on the heat exchanger side, wherein the auxiliary panel is mounted on the front panel. A cylindrical portion is provided that is spaced apart from the machine in the vertical direction of the vehicle and extends rearward from the front panel, and an alarm generating member that generates an alarm is installed inside the cylindrical portion. In addition, the cylindrical portion is formed with a notch that faces the heat exchanger in the vertical direction and opens toward the auxiliary machine.

  As described above, according to the present invention, it is possible to easily prevent the heat dissipation effect of the heat exchanger from decreasing without being restricted by the design of the vehicle.

FIG. 1 is a diagram showing a cooling structure for a vehicle internal combustion engine according to an embodiment of the present invention, and is a plan view of a front portion of the vehicle. FIG. 2 is a view showing a cooling structure for a vehicle internal combustion engine according to an embodiment of the present invention, and is a front view of a front bumper. FIG. 3 is a front view of the vehicle internal combustion engine according to the embodiment of the present invention. FIG. 4 is a front view of an internal combustion engine having a front bumper as an imaginary line when the vehicle is viewed from the front in the cooling structure for an internal combustion engine for a vehicle according to an embodiment of the present invention. FIG. 5 is a cross-sectional view of the front bumper cut in the direction of VV in FIG. 2, and the engine shows the left side. 6 is a cross-sectional view of the front bumper cut in the direction of VI-VI in FIG. 2, and the engine shows the left side surface. FIG. 7 is a side cross-sectional view of a horn in a cooling structure for an internal combustion engine for a vehicle according to an embodiment of the present invention.

A cooling structure for an internal combustion engine for a vehicle according to an embodiment of the present invention is provided at a front end portion of the vehicle so as to extend in the width direction of the vehicle, and a front panel for taking air into an engine room, and a front panel A cooling structure for an internal combustion engine for a vehicle that is mounted on a vehicle having a heat exchanger installed at the rear, is installed behind the heat exchanger in the engine room, and has an auxiliary device on the heat exchanger side. The front panel is provided with a tubular portion that is spaced apart from the auxiliary machine in the vertical direction of the vehicle and extends rearward from the front panel, and an alarm that generates an alarm inside the tubular portion A generating member is installed, and a cutout portion is formed in the tubular portion so as to face the heat exchanger in the vertical direction and open toward the auxiliary machine.
Thereby, it can prevent easily that the thermal radiation effect of a heat exchanger falls, without receiving restrictions on the design of vehicles.

A vehicle internal combustion engine cooling structure according to an embodiment of the present invention will be described below with reference to the drawings.
1 to 7 are views showing a cooling structure for an internal combustion engine for a vehicle according to an embodiment of the present invention. In FIG. 1 to FIG. 7, in the up / down / front / rear / left / right directions, the vehicle width direction is the left / right direction and the vehicle height direction is the up / down direction when the vehicle traveling direction is front and the backward direction is rear.

First, the configuration will be described.
In FIG. 1, a vehicle 1 includes a front bumper 2 and side fenders 3L and 3R. The front bumper 2 is made of synthetic resin or the like, and extends in the front-rear direction of the vehicle 1 at a front end portion of the vehicle 1 that is separated in the width direction (left-right direction) of the vehicle 1. Hereinafter, the width direction of the vehicle 1 is referred to as a vehicle width direction. The side fenders 3L and 3R are provided above a front wheel (not shown) and extend rearward from the outer end of the front bumper 2 in the vehicle width direction.

  In FIG. 2, a garnish 4, which is a synthetic resin component separate from the front bumper 2, is attached to the front bumper 2. The garnish 4 is provided to improve the design (appearance design) of the front bumper 2 and extends in the vehicle width direction. A license plate mounting portion 5 is provided at the center of the garnish 4 in the vehicle width direction, and the license plate 5A is mounted on the license plate mounting portion 5.

  An opening 2A is formed below the front bumper 2, and a bumper grill (not shown) is attached to the opening 2A. The vehicle 1 has an engine room 6 (see FIG. 1) behind the front bumper 2, and traveling wind is taken into the engine room 6 through the opening 2A. A front grill mounting portion 7 is provided on the upper portion of the front bumper 2.

  The front grille mounting part 7 constitutes a part of the front bumper 2, and openings 7A, 7B, 7C for taking the traveling wind into the engine room 6 are formed at the lower part and the left side of the front grille mounting part 7. Yes.

  A front grill (not shown) is attached to the front surface of the front grill attachment portion 7, and the openings 7A, 7B, and 7C are covered with the front grill. The front bumper 2 of the present embodiment constitutes a front panel of the present invention.

  In FIG. 1, a radiator 8 and an intercooler 9 are installed in the engine room 6, and the radiator 8 and the intercooler 9 are located behind the front bumper 2. The radiator 8 and the intercooler 9 of the present embodiment constitute a heat exchanger of the present invention.

  In the engine room 6, an engine 11 and a transmission 41 as an internal combustion engine are installed. The engine 11 and the transmission 41 are located behind the radiator 8 and the intercooler 9. In FIG. 3, the engine 11 includes a cylinder block 12, a cylinder head 13 provided on the top of the cylinder block 12, and an oil pan 14 provided on the bottom of the cylinder block 12.

  The cylinder block 12 is provided with a plurality of cylinders (not shown). A piston (not shown) is accommodated in the cylinder, and the piston can reciprocate up and down with respect to the cylinder. The piston is connected to a crankshaft (not shown) via a connecting rod (not shown), and the reciprocating motion of the piston is converted into a rotational motion of the crankshaft via the connecting rod.

  The cylinder head 13 is formed with a plurality of intake ports and a plurality of exhaust ports (not shown). The intake port introduces air into the cylinder, and the exhaust port discharges the exhaust gas burned in the cylinder from the cylinder. The oil pan 14 stores oil for lubricating the crankshaft and piston of the engine 11. The transmission 41 shifts and outputs the rotation of the crankshaft.

  The engine 11 and the radiator 8 are connected via a cooling water pipe (not shown), and the cooling water cooled by the radiator 8 is introduced into the engine 11 through the cooling water pipe. Thereby, the engine 11 is cooled.

  Cooling water that has become a high temperature by cooling the engine 11 is introduced into the radiator 8 through the cooling water piping. The cooling water introduced into the radiator 8 is cooled by the traveling wind taken into the engine room 6 and then introduced into the engine 11 through the cooling water piping.

  A turbocharger 15 is provided on the front surface of the cylinder block 12 on the radiator 8 side, and the turbocharger 15 is disposed behind the radiator 8 and the intercooler 9 so as to overlap the radiator 8 and the intercooler 9 in the front-rear direction. Yes.

  The turbocharger 15 includes a turbine housing 15A and a compressor housing 15B. A turbine wheel (not shown) is rotatably provided in the turbine housing 15A.

  Exhaust gas is introduced into the turbine housing 15A from an exhaust port of the cylinder head 13 through an exhaust pipe (not shown), and the turbine wheel is rotated by the exhaust gas. The exhaust gas discharged to the turbine housing 15A is discharged to the catalytic converter 31.

A compressor wheel (not shown) is rotatably provided inside the compressor housing 15B, and the compressor wheel rotates integrally with the turbine wheel. The compressor housing 15B is installed on an intake pipe 32 having an intake passage that communicates the air cleaner 35 (see FIG. 1) and the intake port of the cylinder head 13.
The intercooler 9 is provided on the intake pipe 32, and the intake air introduced into the intake pipe from the compressor housing 15B is cooled by the intercooler 9.

  When the turbine wheel is rotated by the pressure of the exhaust gas, the turbocharger 15 compresses the intake air introduced into the compressor housing 15B from the intake pipe 32 by the compressor wheel that rotates integrally with the turbine wheel. The intake air compressed by the compressor wheel is introduced into the intercooler 9 through the intake pipe 32, and the intake air is cooled by the intercooler 9 and then introduced into the intake port.

  The turbocharger 15 is provided with a waste gate valve 16. The waste gate valve 16 bypasses the exhaust gas to the exhaust side when an exhaust pressure higher than a certain pressure is applied to the turbocharger 15. The turbocharger 15 of this embodiment constitutes an auxiliary machine of the present invention.

  4 to 6, the front grille mounting portion 7 of the front bumper 2 is provided with a cylindrical portion 21. The tubular portion 21 is provided so as to be spaced upward from the turbocharger 15 and extends rearward from the front grill attachment portion 7 in a cylindrical shape. In the front grill attachment portion 7, the cylindrical portion 21 is formed behind the garnish 4.

  A horn (also referred to as a horn) 22 is installed inside the cylindrical portion 21. The horn 22 is a so-called alarm that alerts other vehicles and pedestrians based on the operation of the driver. Raises a horn. A front grille is attached to the front surface of the front grille attaching portion 7, and the horn 22 is difficult to see from the front by the front grille. The horn 22 of this embodiment constitutes an alarm generating member of the present invention.

  A wire harness (not shown) is connected to the horn 22, and power is supplied to the horn 22 by the wire harness. The horn 22 is fixed to a front bumper member 24 (shown by an imaginary line in FIG. 4) installed behind the front grille mounting portion 7 by a bracket 23.

  The tubular portion 21 is formed with a cutout portion 21 </ b> A. The cutout portion 21 </ b> A faces the intercooler 9 in the vertical direction and opens toward the turbocharger 15.

  5 and 7, a diaphragm 25 is provided on the front surface of the horn 22, and the horn 22 generates an alarm when the diaphragm 25 vibrates. In FIG. 7, the diaphragm 25 is formed with a curved surface 25 </ b> A, and the curved surface 25 </ b> A protrudes forward from the radially outer peripheral side and the radially inner peripheral side of the diaphragm 25.

  An inclined surface 25b is formed on the outer peripheral side in the radial direction of the curved surface 25A. The inclined surface 25b is inclined backward from the tip 25a in the protruding direction of the curved surface 25A. Specifically, the diaphragm 25 has a radially central portion, that is, a protruding tip 25a protruding forward in the circumferential direction, and a radially inner peripheral side is rearward of the protruding tip 25a. Further, an inclined surface 25b on the outer peripheral side in the radial direction with respect to the tip 25a in the protruding direction is formed in a disk shape that is inclined backward in a circular shape.

  In FIG. 5, the tubular portion 21 is formed such that the opening area in the front-rear direction gradually decreases as it extends rearward from the front grill attachment portion 7, and the horn 22 is installed at the rear end portion of the tubular portion 21. Has been. That is, the horn 22 is attached to the front bumper member 24 so as to be positioned at the rear end portion of the tubular portion 21 via the bracket 23. Thereby, the front side of the horn 22 is accommodated in the cylindrical portion 21 as shown in FIGS. 5 and 6.

  5 and 7, a circumferential convex portion 21 </ b> B is formed on the outer peripheral surface of the horn 22, and the circumferential convex portion 21 </ b> B protrudes outward from the outer peripheral surface of the horn 22, and the circumference of the outer peripheral surface of the horn 22. Extending in the direction. In FIG. 5, the circumferential convex portion 21 </ b> B is formed at a position overlapping the rear end 21 a of the cylindrical portion 21 in the front-rear direction. The rear end 21a of the cylindrical portion 21 is a rear end excluding the cutout portion 21A.

  In FIG. 2, the notch 21 </ b> A is formed in an arc shape along the circumferential direction of the outer peripheral surface of the horn 22. The range in which the circular arc of the notch 21A is formed is a range of about 1/3 to 1/4 with respect to the entire surface of the horn 22 in the circumferential direction.

  In FIG. 2, the turbocharger 15 is orthogonal to the virtual straight line L1 when the circumferential one end 21L and the circumferential other end 21R of the notch 21A are connected by a virtual straight line L1 in the front view of the vehicle 1. And it is installed on the first virtual plane L2 extending in the front-rear direction through the central portion O of the horn 22.

  2 and 4, when viewed from the front of the vehicle 1, the turbocharger 15 is installed obliquely downward to the left with respect to the horn 22. Therefore, the cutout portion 21 </ b> A is formed in the diagonally lower left region of the tubular portion 21 so as to face the turbocharger 15.

  In FIG. 2, of the openings 7B and 7C formed in the lower part of the front grille mounting portion 7, the opening 7B is located above the intercooler 9 and in the vertical direction of the vehicle 1 with the notch 21A and the turbocharger. 15 is provided at a position that intersects the first virtual plane L2. That is, the opening 7B is provided at a position where the first virtual plane L2 passes.

  In a front view of the vehicle 1, a plane extending in the height direction and the front-rear direction of the vehicle 1 and passing through the center portion O of the horn 22 is defined as a second virtual plane L3, extending in the height direction and the front-rear direction of the vehicle 1, and When the plane passing through the turbocharger 15 is the third virtual plane L4, the opening 7B is provided between the second virtual plane L3 and the third virtual plane L4 in the front view of the vehicle 1. Yes. The opening 7B of this embodiment constitutes the opening of the front panel of the present invention.

In FIG. 6, the front grill mounting portion 7 is provided with an inclined wall 27. The inclined wall 27 is inclined from the upper wall surface of the opening 7B toward the turbocharger 15.
In FIG. 5, a guide plate 28 separate from the front bumper 2 is provided behind the front grill mounting portion 7. The guide plate 28 extends in the vertical direction below the horn 22 and above the opening 7B (see FIG. 6).

Next, the operation will be described.
While the vehicle 1 is traveling, traveling wind W is taken into the engine room 6 from the front of the vehicle 1 through the openings 2A, 7A, 7B, and 7C. As a result, the radiator 8 and the intercooler 9 that are installed on the most front side in the engine room 6 are cooled by the traveling wind W.

  On the other hand, the traveling wind W taken into the tubular portion 21 is collected by the tubular portion 21 and then flows to the turbocharger 15 through the cutout portion 21A as shown by traveling wind W1 (see FIG. 6). As a result, the turbocharger 15 installed behind the radiator 8 and the intercooler 9 is cooled by the traveling wind W1.

  According to the cooling structure of the engine 11 of the present embodiment, the front bumper 2 is provided with a cylindrical portion 21 that is spaced apart upward from the turbocharger 15 and extends rearward from the front bumper 2. A cutout portion 21A is formed in the cylindrical portion 21, and the cutout portion 21A faces the radiator 8 in the vertical direction and opens toward the turbocharger 15.

  As a result, after the traveling wind W1 is collected by the tubular portion 21, the traveling wind W1 can flow from the space surrounded by the tubular portion 21 and the horn 22 toward the turbocharger 15 through the cutout portion 21A.

  For this reason, the turbocharger 15 can be easily cooled, and the heat dissipation effect of the radiator 8 and the intercooler 9 can be prevented from being lowered by the heat of the turbocharger 15. As a result, the cooling performance of the engine 11 can be improved.

  The front bumper 2 constitutes the most prominent front end portion of the vehicle 1 among the vehicles 1, and the front bumper 2 is attached with parts for improving design such as the garnish 4 and the license plate mounting portion 5. Thereby, the front bumper 2 becomes an important part for enhancing the aesthetic appearance of the vehicle 1. For this reason, there is a design restriction to newly set an opening for introducing the traveling wind to the turbocharger 15 in the front bumper 2.

According to the cooling structure of the engine 11 of the present embodiment, the cutout portion 21A is formed in the cylindrical portion 21 for installing the horn 22, thereby preventing the design of the vehicle 1 from being deteriorated, while reducing the turbo. The charger 15 can be easily cooled.
As described above, the cooling structure of the engine 11 according to the present embodiment can easily prevent the heat dissipation effect of the radiator 8 and the intercooler 9 from being lowered without being restricted by the design of the vehicle 1.

  Further, according to the cooling structure of the engine 11 of the present embodiment, the turbocharger 15 is installed behind the radiator 8 and the intercooler 9 so as to overlap with the radiator 8 and the intercooler 9 in the front-rear direction.

Thereby, the traveling wind W taken into the engine room 6 through the openings 2A, 7A, 7B, and 7C collides with the radiator 8 and the intercooler 9 and does not flow to the turbocharger 15 behind the radiator 8 and the intercooler 9. However, the traveling wind W1 can be easily guided to the turbocharger 15 from the notch 21A.
For this reason, the turbocharger 15 can be easily cooled, and the heat dissipation effect of the radiator 8 and the intercooler 9 can be prevented from being lowered by the heat of the turbocharger 15.

  Further, according to the cooling structure of the engine 11 of the present embodiment, the curved surface 25A protruding forward is formed on the front surface of the horn 22, and the curved surface 25A is formed on the outer peripheral side in the radial direction of the curved surface 25A. An inclined surface 25b that is inclined rearward from the tip 25a in the protruding direction is formed.

  Thereby, the traveling wind W1 introduced into the tubular portion 21 and flowing through the horn 22 is guided to the outer peripheral portion in the radial direction of the horn 22 along the inclined surface 25b of the diaphragm 25 provided on the front surface of the horn 22. Yes (see FIG. 7).

  For this reason, the traveling wind W1 guided to the outer peripheral portion of the horn 22 can be easily guided from the outer peripheral portion of the horn 22 to the cutout portion 21A. As a result, the traveling wind W1 can easily flow from the cutout portion 21A to the turbocharger 15, and the cooling efficiency of the turbocharger 15 can be improved. In addition, although the diaphragm 25 of a present Example is formed in disk shape, the shape of the diaphragm 25 is not limited to this.

  Further, according to the cooling structure of the engine 11 of the present embodiment, the cylindrical portion 21 is formed so that the opening area in the front-rear direction gradually decreases as it extends rearward from the front grille mounting portion 7, and the horn 22 is formed. The cylindrical portion 21 is installed at the rear end portion.

  Thereby, the opening area of the cylindrical part 21 can be made small as it goes from the front side of the cylindrical part 21 to the rear side, and the clearance gap between the outer peripheral part of the horn 22 and the cylindrical part 21 can be made small. For this reason, the traveling wind W1 collected in the cylindrical portion 21 can be made difficult to escape rearward from between the outer peripheral portion of the horn 22 and the cylindrical portion 21, and can be guided to the cutout portion 21A. Furthermore, when the traveling wind W1 introduced into the tubular portion 21 moves toward the horn 22 along the tubular portion 21, the flow velocity of the traveling wind W1 can be increased.

  Due to these synergistic effects, the traveling wind W1 having a high flow velocity can be caused to flow to the turbocharger 15 while preventing the air volume of the traveling wind W1 collected in the tubular portion 21 from being lowered. Even if it is away from, the cooling efficiency of the turbocharger 15 can be improved.

  Further, according to the cooling structure of the engine 11 of the present embodiment, the circumferential convex portion 21 </ b> B that protrudes outward from the outer peripheral surface of the horn 22 and extends in the circumferential direction of the outer peripheral surface of the horn 22 is formed on the outer peripheral surface of the horn 22. Has been. Thereby, the clearance gap between the outer peripheral part of the horn 22 and the cylindrical part 21 can be made small, and the driving | running | working wind W1 collected by the cylindrical part 21 is back from between the outer peripheral part of the horn 22 and the cylindrical part 21 back. It is difficult to pull out and can be effectively guided by the notch 21A.

  Further, according to the cooling structure of the engine 11 of the present embodiment, the notch portion 21 </ b> A is formed in an arc shape along the circumferential direction of the outer peripheral surface of the horn 22. When the circumferential one end 21L and the circumferential other end 21R of the notch 21A are connected by a virtual straight line L1 when the vehicle 1 is viewed from the front, the turbocharger 15 is orthogonal to the virtual straight line L1, and the horn 22 Are installed on a first virtual plane L2 that extends in the front-rear direction through the center portion O.

  Accordingly, the turbocharger 15 can be opposed to the circumferential center of the notch 21A without being biased toward the circumferential one end 21L or the other circumferential end 21R of the notch 21A. More traveling wind W1 including traveling wind flowing in the center of the notch 21A can be guided to the turbocharger 15. For this reason, the cooling efficiency of the turbocharger 15 can be improved more effectively.

  Further, according to the cooling structure of the engine 11 of the present embodiment, the opening 7B is formed in the front grille mounting portion 7 of the front bumper 2, the opening 7B is above the intercooler 9, and the vehicle 1 It is provided at a position that intersects the first virtual plane L2 between the cutout portion 21A and the turbocharger 15 in the vertical direction.

  Thus, the traveling wind W2 (see FIG. 6) taken into the engine room 6 from the opening 7B can be merged with the traveling wind W1 flowing from the notch 21A to the turbocharger 15 and guided to the turbocharger 15. For this reason, it is possible to further increase the cooling efficiency of the turbocharger 15 by further increasing the amount of traveling airflow flowing through the turbocharger 15.

  Here, if the opening area of the opening 7B is increased, more running wind can be taken into the engine room 6, but the air resistance during the running of the vehicle 1 increases, and the fuel consumption deteriorates.

  On the other hand, according to the cooling structure of the engine 11 of the present embodiment, in the front view of the vehicle 1, the second plane extends through the center portion O of the horn 22 and extends in the height direction and the front-rear direction of the vehicle 1. When the virtual plane L3 is defined as a third virtual plane L4 that extends in the height direction and the front-rear direction of the vehicle 1 and passes through the turbocharger 15, the opening 7B is second in the front view of the vehicle 1. Between the virtual plane L3 and the third virtual plane L4.

  Thereby, even if the opening area of the opening 7B is reduced, the traveling wind W2 taken into the engine room 6 from the opening 7B can be merged with the traveling wind W1 flowing from the notch 21A to the turbocharger 15. Further, it is possible to introduce more traveling wind to the turbocharger 15 while preventing an increase in air resistance when the vehicle 1 is traveling. As a result, the cooling efficiency of the turbocharger 15 can be improved.

  Further, according to the cooling structure of the engine 11 of the present embodiment, the front grill mounting portion 7 is provided with the inclined wall 27 that is inclined toward the turbocharger 15 from the upper wall surface of the opening 7B. Thus, the traveling wind W2 taken into the engine room 6 from the opening 7B can be directed to the turbocharger 15, and the running wind W1 flowing from the notch 21A to the turbocharger 15 and the running taken from the opening 7B. The direction in which the wind W2 flows can be the same direction.

  For this reason, W2 taken into the engine room 6 from the opening 7B can be easily merged with the traveling wind W1 flowing from the notch 21A to the turbocharger 15, and the cooling efficiency of the turbocharger 15 can be improved more effectively. .

  Further, according to the cooling structure of the engine 11 of the present embodiment, the guide plate 28 is provided behind the front grille mounting portion 7, and the guide plate 28 is below the horn 22 and above the opening 7B. In FIG.

  Thereby, it is possible to prevent the traveling wind W1 flowing through the tubular portion 21 from colliding with the guide plate 28 (see FIG. 6), and to escape from between the outer peripheral portion of the horn 22 and the tubular portion 21 to the rear. The amount of traveling airflow that flows through the charger 15 can be secured.

  Although the horn 22 is provided above the turbocharger 15 according to the cooling structure of the engine 11 of the present embodiment, the horn 22 may be provided below the turbocharger 15.

  While embodiments of the invention have been disclosed, it will be apparent to those skilled in the art that changes may be made without departing from the scope of the invention. All such modifications and equivalents are intended to be included in the following claims.

  1 ... vehicle, 2 ... front bumper (front panel), 6 ... engine room, 7 ... front grill mounting (front panel), 7B ... opening (front panel opening) , 8 ... Radiator (heat exchanger), 9 ... Intercooler (heat exchanger), 11 ... Engine (internal combustion engine), 15 ... Turbocharger (auxiliary), 21 ... Cylindrical Part, 21B ... circumferential convex part, 21L ... circumferential end part (circumferential one end part of the notch part), 21R ... circumferential other end part (circumferential other end part of the notch part) , 21a ... rear end (rear end of the cylindrical portion), 22 ... horn (alarm generating member), 25A ... curved surface (curved surface of alarm generating member), 25a ... tip (curved surface) 25b ... inclined surface (inclined surface of curved surface), 27 ... inclined wall, 28 ... guide plate, L1 ... virtual straight line, L2 ... first virtual Plane (virtual plane), L3 ... second virtual plane L4 ... the third virtual plane

Claims (10)

It is mounted on a vehicle that is provided at the front end of the vehicle so as to extend in the width direction of the vehicle, and includes a front panel that takes air into the engine room, and a heat exchanger that is installed behind the front panel. A cooling structure for an internal combustion engine for a vehicle that is installed behind the heat exchanger in the engine room and includes an auxiliary machine on the heat exchanger side,
The front panel is spaced apart from the auxiliary machine in the vertical direction of the vehicle, and a cylindrical portion extending rearward from the front panel is formed.
An alarm generating member for generating an alarm is installed inside the cylindrical portion,
A cooling structure for an internal combustion engine for a vehicle, wherein the tubular portion is formed with a notch portion facing the heat exchanger in a vertical direction and opening toward the auxiliary machine.   2. The cooling structure for an internal combustion engine for a vehicle according to claim 1, wherein the auxiliary machine is installed behind the heat exchanger so as to overlap with the heat exchanger in a front-rear direction of the vehicle.   A curved surface that protrudes toward the front of the vehicle is formed on the front surface of the alarm generating member, and an inclined surface that inclines toward the rear of the vehicle from the tip in the protruding direction of the curved surface on the outer peripheral side of the curved surface. The cooling structure for an internal combustion engine for a vehicle according to claim 1, wherein the cooling structure is formed. The cylindrical portion is formed such that the opening area in the front-rear direction of the vehicle gradually decreases as it extends rearward from the front panel,
The cooling structure for an internal combustion engine for a vehicle according to any one of claims 1 to 3, wherein the alarm generation member is installed at a rear end portion of the cylindrical portion. On the outer peripheral surface of the alarm generating member, a circumferential convex portion that protrudes outward from the outer peripheral surface of the alarm generating member and extends in the circumferential direction of the outer peripheral surface is formed,
5. The internal combustion engine for a vehicle according to claim 1, wherein the circumferential convex portion is formed at a position overlapping a rear end of the cylindrical portion and a longitudinal direction of the vehicle. Engine cooling structure. The notch is formed in an arc shape along the circumferential direction of the outer peripheral surface of the alarm generating member,
When the circumferential one end and the other circumferential end of the notch are connected by a virtual straight line when viewed from the front of the vehicle, the auxiliary machine is orthogonal to the virtual straight line and the center of the alarm generating member The cooling structure for an internal combustion engine for a vehicle according to any one of claims 1 to 5, wherein the cooling structure is installed on a virtual plane extending in the front-rear direction of the vehicle through the section. The front panel has an opening that opens toward the engine room,
The opening is provided above the heat exchanger and at a position intersecting the virtual plane between the notch and the auxiliary machine in the vertical direction of the vehicle. The cooling structure for an internal combustion engine for a vehicle according to claim 6. The virtual plane is a first virtual plane, and in a front view of the vehicle, a plane that extends in the height direction of the vehicle and the front-rear direction of the vehicle and passes through the center of the alarm generation member is a second virtual plane. When the plane extending in the height direction and the front-rear direction of the vehicle and passing through the auxiliary machine is a third virtual plane,
The cooling structure for an internal combustion engine for a vehicle according to claim 7, wherein the opening is provided between the second virtual plane and the third virtual plane in a front view of the vehicle.   The cooling structure for an internal combustion engine for a vehicle according to claim 7 or 8, wherein the front panel has an inclined wall inclined from the opening toward the auxiliary machine.   The guide part is provided in the back of the front panel, The guide part is extended in the up-and-down direction of vehicles under the alarm generating member and above the opening. The cooling structure for an internal combustion engine for a vehicle according to any one of claims 7 to 9.

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