JP2020104690A - Internal combustion engine for automobile - Google Patents

Abstract

To achieve improvement of workability in assembling into an automobile, prevention of adverse effect of hot air from a radiator, and prevention of breakage of a cooling water pipeline at a collision time in an internal combustion engine for automobile comprising an intercooler.SOLUTION: A heat exchange unit 22 of an intercooler 21 is supported via a front bracket 39 fixed to a cylinder head 2. Since the intercooler 21 is held integrally on an engine main body, the intercooler can be easily assembled to an automobile. The front bracket 39 is provided with a baffle plate 50 which prevents that hot air having passed a radiator 27 enters into a core part 32. Even if the intercooler 21 is shifted backward at an accident time, falling thereof is blocked by the baffle plate 50, and therefore, breakage of a pipeline (hose) connected to a cooling water distribution part 26 can be prevented.SELECTED DRAWING: Figure 2

Description

The present invention relates to an internal combustion engine for an automobile equipped with an air-cooled intercooler.

An internal combustion engine for an automobile equipped with an exhaust turbocharger is often equipped with an air-cooled intercooler in order to cool intake air. The air-cooled intercooler is equipped with a ventilation casing through which traveling air passes and a core (heat exchange element) through which intake air flows. The traveling air taken into the casing is applied to the core to cool the intake air. doing.

The inlet of the casing is opened toward the front of the vehicle body to capture the running wind, while the outlet of the casing is generally opened downward or rearward, but the radiator is located at the front side of the intercooler. Due to the arrangement, when the engine is running with the car stopped, hot air that has passed through the radiator may flow into the outlet of the casing, which causes the intake air to heat up and fill up. The efficiency deteriorated, and sometimes the output was not output even when the accelerator was stepped on.

In this regard, in Patent Document 1, the lower duct portion (upstream tank) provided at the lower end of the core portion of the intercooler is prevented from the wind passing through the radiator from flowing around the outlet of the air duct (ventilation casing). It is disclosed that a straightening vane is provided. Further, in Patent Document 1, the front part of the air guide duct (ventilation casing) is attached to the radiator.

Japanese Patent No. 5704440

Patent Document 1 can prevent hot air that has passed through the radiator from flowing into the intercooler with a simple structure, but since the casing is attached to the radiator, the intercooler cannot be assembled in advance in the engine. Therefore, the workability of assembling the automobile is poor.

Although the intercooler is located above the transmission, the cooling water distributor to which many cooling water pipes (hoses) are connected is provided above the transmission in the cylinder head. There are many. Then, when a car has a collision accident, the intercooler may be pushed downward through the hood (bonnet), but in Patent Document 1, when the intercooler is pushed downward, a metal straightening plate is also generated. Since they move down together, the cooling plate may be damaged by the straightening plate made of a metal plate.

The present invention has been made to improve the present situation.

The present invention relates to an internal combustion engine for automobiles,
"An engine main body having a crankshaft, an air-cooled intercooler attached to the upper part thereof, a transmission fixed to one end face of both front and rear ends of the engine main body viewed from the crankshaft line direction, and the above The engine main body includes a cooling water distributor arranged above the transmission, and the intercooler is located above the cooling water distributor so as to protrude from one end of the engine main body. Along with it, it is arranged so that the traveling wind can escape almost downwards.''
The basic configuration is
"In the engine room in which the radiator is arranged at the front end, the transmission is arranged behind the radiator, and the crankshaft is arranged in a horizontal posture in which the crankshaft is long in the vehicle width direction."
It is like this.

And the invention of claim 1 has the following basic configuration:
"A bracket that supports the intercooler is fixed to the upper portion of the engine body, and the bracket is provided with a baffle plate that suppresses the wind that has passed through the radiator from flowing into the intercooler from below. There is"
It has the feature.

The present invention also includes the configuration of claim 2. The invention of claim 2 is a development of claim 1,
"While a horizontal support plate is provided at the upper end of the bracket, a mounting plate that is mounted on the support plate of the bracket is provided at the front portion of the intercooler.
In the support plate and the mounting plate, there is a bolt insertion hole through which a bolt for fastening them penetrates,
Either or both of the bolt insertion hole of the support plate and the bolt insertion hole of the mounting plate are cut open in the front-rear direction so that the bolt can be removed when a backward force is applied to the intercooler. There is"
Is configured.

In the present invention, since the wind that has passed through the radiator does not flow into the casing of the intercooler, there is no case where the intake air is heated and the charging efficiency deteriorates. Therefore, for example, there is no phenomenon that no output is produced even when the accelerator is stepped on when starting from a stopped state during traffic jam, and high acceleration response can be secured.

Further, since the intercooler is attached to the engine body via the bracket, the intercooler can be attached to the engine body in a stable state before the automobile is assembled. Therefore, it can also contribute to improving the efficiency of automobile assembly work.

Also, when the intercooler is pushed downward by the hood due to a car accident or the like, the air guide plate can prevent the intercooler from moving downward, so the cooling water piping located below the intercooler Can prevent damage. Therefore, after the accident, it is possible to drive on its own and evacuate to a safe area, or to drive to a service shop.

According to the second aspect of the invention, when the intercooler is pushed backward due to a collision accident, the intercooler is allowed to move backward by removing the bolt from the bolt insertion hole. Therefore, when the automobile collides with a person, the deformation of the hood can be increased to reduce the impact on the person.

Also, in the event of a collision with a person or an object, by moving the intercooler backward, it is possible to prevent the intercooler from hitting the cooling pipes and prevent damage to the cooling water pipes. it can. As a result, it is possible to evacuate after an accident and to travel to a maintenance shop, as in the case of being supported by a baffle plate.

FIG. 2 is a front view of the internal combustion engine as viewed from the front of the vehicle body. It is the perspective view which looked at the principal part from the lower front. (A) is a perspective view of the main part seen from the front upper side, (B) is a view showing an intercooler mounting plate, (C) is a sectional view taken along line CC of (A), and (D) is a bolt insertion hole. It is a figure which shows the effect|action of the slit part. FIG. 4 is a partial IV-IV view of FIG. 1. (A) and (B) are perspective views of a bracket. (A) is a side view of a front bracket, (B) is a sectional view taken along the line BB of (A), and (C) is a view showing a broken state of the front bracket.

Next, an embodiment of the present invention will be described with reference to the drawings. In the following, front-back and left-right wording is used to specify the direction, but this direction is based on the orientation of the vehicle body. The left-right direction is the vehicle width direction. The front view is a view seen from a direction opposite to the front surface of the vehicle body.

In the internal combustion engine, the crank axis direction is generally called the front-rear direction, but the internal combustion engine of the present embodiment is arranged in the engine room in a horizontal position where the crank shaft is long in the vehicle width direction. Therefore, the direction used below is different from the commonly used direction (general term is the opposite of front, back, left and right).

(1). Basic Structure First, the basic structure of the internal combustion engine will be described mainly based on FIG. The basic structure of the internal combustion engine is the same as the conventional one, and as shown in FIG. 1, a cylinder block 1 having a cylinder bore, a cylinder head 2 fixed to the upper surface thereof, a head cover 3 fixed to the upper surface thereof, An oil pan 4 fixed to the lower surface of the cylinder block 1 is provided, and the transmission 5 is fixed to the cylinder block 1 and one end surfaces 1 a and 4 a of the oil pan 4.

A front cover 6 that covers the timing chain is fixed to the other end surfaces 1b and 2b of the cylinder block 1 and the cylinder head 2, and the engine is constituted by the cylinder block 1, the cylinder head 2, the head cover 3, the oil pan 4, and the front cover 6. The body is configured. The other end of the head cover 3 is provided with an oil filling port 8 which is closed by a cap 7.

The internal combustion engine of the present embodiment is arranged with the exhaust side surface facing forward. Therefore, although an exhaust outlet (not shown) that opens forward is formed at the exhaust outlet of the cylinder head 2, only one exhaust outlet is formed in the present embodiment, and an exhaust turbo is provided at this exhaust outlet. The turbine housing 10 of the supercharger 9 is connected.

A catalyst case 11 containing a catalyst is connected to an outlet of a turbine housing 10 of the exhaust turbocharger 9 via an elbow pipe, and an exhaust pipe 12 is connected to a lower end of the catalyst case 11. The catalyst case 11 is covered with an insulator 13 from the front side.

The exhaust gas turbocharger 9 further includes a compressor housing 14 and a bearing housing 15. In the compressor housing 14, an actuator 16 that controls a wastegate valve (not shown) provided in the turbine housing 10 is provided. It is provided. Further, the intake inlet of the compressor housing 14 and the outlet of the air cleaner 17 are connected by the intake first duct 18. The air cleaner 17 is disposed above the head cover 3 and at a position near the other end of the engine body, and an intake intake duct 19 is connected to the dust side chamber of the air cleaner 17.

The upstream end of the intake second duct 20 is connected to the outlet of the compressor housing 14 of the exhaust turbocharger 9, and the downstream end of the intake second duct 20 is connected to the heat exchange unit 22 constituting the intercooler 21. It is connected to the upstream tank 23 (see also FIG. 4).

The compressor housing 14 of the exhaust turbocharger 9 is arranged at a portion near the other end surface 2b of the cylinder head 2, while the intercooler 21 is located at a portion higher than the head cover 3 and at one end of the head cover 3. It is arranged so as to protrude to the outside. Therefore, the intercooler 21 is arranged above the base portion of the transmission 5.

As described above, since the compressor housing 14 and the intercooler 21 of the exhaust turbocharger 9 are different from each other in height and greatly separated from each other in the left-right direction, the intake second duct 20 is provided in the exhaust turbocharger 9. After standing up from the compressor housing 14, it is in a horizontal posture toward the intercooler 21. Therefore, the middle part of the intake second duct 20 is supported by the intermediate bracket 24 fixed to the head cover 3.

A cooling water distributor 26 having a plurality of joint ports 25 is arranged on one end surface 2a of the cylinder head 2, and a hose (not shown) connected to each joint port 25 is used to cool the cooling water to the radiator 27 and the like. Is being sent back. Specifically, in addition to water supply/return to the radiator 27, water supply/return to the indoor heating heater core, water supply/return to the CVT warmer, water supply/return to the EGR cooler, and cooling of the exhaust turbocharger 9. Water is supplied to and returned from the water jacket.

Further, the cooling water distributor 26 has a built-in thermo valve for controlling the water supply to the radiator 27. In the present embodiment, the cooling water distributor 26 is attached to the one end surface 2a of the cylinder head 2 afterwards, but it may be formed integrally with the cylinder head 2.

As shown in FIG. 1, the radiator 27 is arranged substantially in front of the transmission 5. Therefore, when seen in a plan view, the radiator 27 is arranged in front of the intercooler 21 and the cooling water distributor 26. Further, in terms of height, the intercooler 21 is located at a position higher than the upper end of the radiator 27, and the cooling water distribution unit 26 is located at a height overlapping the upper portion of the radiator 27.

A fan shroud 28 is arranged behind the radiator 27, and an electric radiator fan (not shown) is attached to the fan shroud 28. As shown in FIG. 4, the radiator 27 includes an upper tank 27a, and the upper tank 27a is fixed to a radiator support (front frame) 29 provided at the front portion of the vehicle body. Note that, as shown in FIG. 4, the internal combustion engine of the present embodiment is a slant type in which the cylinder axis O1 is slightly inclined forward with respect to the vertical line O2.

(2). Intercooler and its support structure As can be easily understood from FIG. 2 and FIG. 4, the intercooler 21 is arranged at the ventilation casing 31 opening to the front and the lower rear, and the outlet portion of the ventilation casing 31. It is composed of a heat exchange unit 22. The heat exchange unit 22 includes a core portion 32 provided with a large number of plate type heat exchange elements, the above-described upstream tank 23 connected to the upstream end portion of the core portion 32, and the downstream end portion of the core portion 32. And the downstream side tank 33 connected to.

The inlet of the upstream tank 23 is opened laterally, and the second intake duct 20 is connected to this. On the other hand, the outlet of the downstream tank 33 is opened downward, and the upper end of the intake third duct 34 is connected to the outlet opened downward. The heat exchange unit 22 is inclined so that it becomes higher toward the rear, and the inclination angle with respect to the horizontal is about 30°.

The lower end of the third intake duct 34 is connected to a throttle body 35, and the throttle body 35 is attached to a surge tank 37 of an intake manifold 36, as shown in FIG. As shown in FIGS. 2 to 4, an eaves portion 38 that covers the upstream tank 23 from above is provided in the front portion of the ventilation casing 31.

As an attachment means of the intercooler 21, for example, as shown in FIG. 4, the upstream tank 23 is connected to one end of the cylinder head 2 via a front bracket 39, and as shown in FIG. The other side portion is connected to one end portion of the cylinder head 2 via the rear bracket 40. In the present embodiment, the front bracket 39 corresponds to the bracket described in the claims.

The front bracket 39 is made of a metal plate such as a stainless plate, and as can be easily understood from FIG. 3A (see also FIG. 4 ), a lower fixing plate 41 that overlaps the upper surface of one end of the cylinder head 2 is provided. The lower fixing plate 41 has an upright plate 42 that rises upward from the lower fixing plate 41, and a support plate 43 that extends laterally from the upright plate 42. The lower fixing plate 41 is attached to the upper surface of the cylinder head 2 by two front and rear bolts 41a. On the other hand, while being fixed, a front mounting plate 44 projecting forward from the front bracket 39 is connected to the support plate 43 by a bolt 45. A nut 46 into which a bolt 45 is screwed is fixed to the lower surface of the support plate 43.

The front mounting plate 44 is integrally formed with the upstream tank 23, and is provided with left and right upward ribs 44a to ensure strength. Further, the front mounting plate 44 is provided with elastic rings 47 which are vertically overlapped with each other. Therefore, the mounting structure of the front mounting plate 44 is a kind of grommet structure. It is also possible to attach the elastic ring 47 to the support plate 43 of the front bracket 39 and insert the downward pin provided on the front mounting plate 44 into the elastic ring 47.

The front mounting plate 44 has a bolt insertion hole 48 through which the bolt 45 is inserted, but as shown in FIGS. 3(B) and 3(D), the bolt insertion hole 48 has a cutout portion 48a that is opened forward. The shape is formed. The cutout portion 48a has a tapered shape in which the width thereof is widened toward the front side, and the width of the narrowest portion is smaller than the outer diameter of the bolt 45. Therefore, the bolt insertion hole 48 has a constricted portion having a size smaller than the outer diameter of the bolt 45, and is cut open in a forward direction.

As shown in FIG. 3A, the attachment structure of the core portion 32 to the rear bracket 40 is similar to the attachment structure of the upstream tank 23 to the front bracket 39, and the rear attachment plate 51 is brazed to the other side surface of the core portion 32. The rear mounting plate 51 is fixed to the upper piece 40a of the rear bracket 40 via a bolt 52 and an elastic ring 47. Similar to the front mounting plate 44, the rear mounting plate 51 is also formed with a cutout portion 51a for the bolt insertion hole.

When the vehicle collides with a person, the hood F schematically shown in FIG. 4 may be pushed by the person's body to be deformed into a recess, and the intercooler 21 may be pushed backward and downward by the hood F. In this case, if the intercooler 21 is firmly fixed to the front bracket 39, the deformation amount of the hood F becomes small, and thus the damage to the human body becomes large.

On the other hand, when the bolt insertion hole 48 of the front mounting plate 44 is opened forward as in this embodiment, the front mounting plate 44 is disengaged from the bolt 45 by a certain amount of external force, so that the hood F pushes the intercooler. 21 retreats. Therefore, it is possible to increase the deformation amount of the hood F and reduce the damage to the person.

The same applies to the rear mounting plate 51. Since the opening portion 51a is formed in the bolt insertion hole and the external mounting force exceeds a certain amount, the rear mounting plate 51 is separated from the bolt 52, so that the deformation amount of the hood F is reduced. It can be increased to suppress damage to the body. Therefore, if the cut-out portions 48a and 51a are formed on both the front mounting plate 44 and the rear mounting plate 51 as in the embodiment, the intercooler 21 can be easily detached in the event of an accident, and damage to the human body can be reduced. You can contribute greatly. It can be said that the cutout portion may be formed at least in the front attachment plate 44.

(3). Baffle plate Since the intercooler 21 protrudes outside the one end surface 2a of the cylinder head 2, the front bracket 39 has the standing plate 42 rising from one end of the lower fixing plate 41 and the supporting plate 43 It extends in the direction opposite to the lower fixing plate 41. Therefore, the front bracket 39 is bent like a crank when viewed from the front.

Since the front bracket 39 is bent in the shape of a crank, the support plate 43 extends outside the one end surface of the cylinder head 2. However, as can be easily understood from FIG. 2, for example, the support plate 43 extends rearward. The baffle plate 50 having the restriction portion 50a is fixed by welding or the like via the side plate 55.

That is, the baffle plate 50 has an upward piece 50b fixed to the side plate 55 extending downward from the support plate 43 of the front bracket 39 by welding, and a restricting portion 50a provided at the lower end of the upward piece 50b and extending rearward. And has a substantially L-shape in a side view. The restriction portion 50a is located below the front portion of the heat exchange unit 22.

The form of the front bracket 39 is clearly shown in FIG. As shown in FIG. 5, the standing plate 42 and the support plate 43 are formed with integrally continuous rib grooves (or rib protrusions) 53 for reinforcement. A bolt insertion hole 54 is formed in the upper end of the support plate 43. The upward piece 50b of the baffle plate 50 and the restricting portion 50a are also formed in a concavo-convex shape to increase strength and absorb thermal deformation. As shown in FIG. 5(B), an escape hole 55a is formed in the connecting portion between the support plate 43 and the side plate 55. The lower fixing plate 41 has two front and rear bolt insertion holes 41b.

Now, in the state where the automobile is running, as shown by a solid arrow 56 in FIG. 4, the traveling wind passes through the core portion 32 of the heat exchange unit 22 through the ventilation casing 31, so that heat exchange is performed. Then, the intake air is cooled.

On the other hand, when the radiator fan is driven, the hot air that has passed through the radiator 27 flows backward as shown by the dotted arrow in FIG. In this case, while the vehicle is traveling, the hot air that has passed through the radiator 27 is pushed backward by the traveling air, so that the hot air does not enter the core portion 32 of the intercooler 21.

However, when the radiator fan is rotating while the vehicle is stopped as in a traffic jam, the transmission 5 is arranged behind the radiator 27, and so on. As shown by, a part of the hot air that has passed through the radiator 27 may flow upward and go toward the core portion 32 of the intercooler 21. Then, when the hot air enters the core portion 32, the intake air is heated and the charging efficiency is reduced as described above, and the meaning of the intercooler 21 is lost.

On the other hand, in the present embodiment, by disposing the air guide plate 50 in the front portion of the heat exchange unit 22, the hot air toward the core portion 32 is diverted downward as indicated by the arrow 58. Therefore, it is possible to prevent hot air from flowing into the core portion 32 and prevent deterioration of the filling efficiency.

Although the baffle plate 50 is arranged only below the front part of the core part 32, since the core part 32 is inclined so as to become higher toward the rear, if the inflow of hot air can be blocked at the front part, Hot air does not enter. Therefore, the object can be achieved even if the baffle plate 50 is disposed only below the front portion of the core portion 32.

On the other hand, as described above, in a collision accident, the intercooler 21 may come off rearward from the front bracket 39 and fall downward, but if the intercooler 21 largely falls down, the intercooler 21 is connected to the cooling water distributor 26. The hoses that are present may be damaged by the intercooler 21. Then, even if the engine body is in an operable state, the operation may be immediately stopped due to the leakage of the cooling water, and the evacuation action may not be performed.

On the other hand, in the present embodiment, since the regulation portion 50a of the baffle plate 50 extends rearward, the regulation portion 50a prevents the intercooler 21 from falling. Therefore, it is possible to prevent the intercooler 21 from largely falling and avoid damage to the hoses connected to the cooling water distributor 26. As a result, the evacuation traveling by itself becomes possible.

(4). Earth and related structure The internal combustion engine of the present embodiment is an EFI engine that controls the opening of the throttle valve and the fuel injection amount by calculating the intake air amount from the intake pressure immediately below the throttle valve and the engine speed. The electric circuit is energized by grounding the engine body.

Then, in the present embodiment, as shown in FIGS. 5A and 6, the lower portion of the standing plate 42 of the front bracket 39 constitutes the ground wire fixing portion 42a, and the ground wire fixing portion 42a The ground wire 59 is connected through the terminal plate 60. The terminal plate 60 has an elongated shape, and a crimp portion 63 for connecting the ground wire 59 is provided on one side of the mounting hole 62 through which the screw 61 such as a tapping screw penetrates to sandwich the mounting hole 62. Therefore, a detent claw 64 is provided on the other side.

The standing plate 42 of the front bracket 39 is provided with a mounting hole 65 into which the screw 61 is screwed and a positioning hole 66 located below the mounting hole 65, and the claw 64 of the terminal plate 60 is engaged with the positioning hole 66. Then, it is fixed with screws 61. It is also possible to screw the screw 61 into the nut.

As described above, the control circuit secures the flow of current by grounding it to the engine body via the front bracket 39. However, if the grounding function is lost due to a collision accident, etc., the current will not flow to the circuit and control will be performed. However, even if the engine's driving function is maintained, the vehicle will not be able to run and will not be able to take evacuation action. Therefore, even if the front bracket 39 is damaged due to an accident or severe vibration, it is required to keep the grounded state.

With respect to this point, in the present embodiment, the weakened portion having the lowest strength is formed in a portion of the standing plate 42 above the ground wire fixing portion 42a, so that the grounded state is maintained even if the front bracket 39 is broken. I am trying to do it.

That is, first, the front edge of the standing plate is formed in a V shape having an included angle of less than 180°, and the vertex 42b of the V character is positioned above the ground wire fixing portion 42a, so that the standing plate 42 is grounded. The upper side of the line fixing portion 42a is narrowed in a side view so that the uppermost portion thereof is narrowest, and the upper side of the rear edge of the standing plate 42 is higher than the apex 42b. The side plate 55 is bent and formed at the above position, and the lower end of the side plate 55 is set to face the apex 42b of the dogleg.

With this structure, the standing plate 42 has the lowest strength at the weakening line 42c connecting the lower end of the side plate 55 and the apex 42b of the dogleg (that is, stress concentrates at the weakening line 42c). The grounded wire fixing portion 42a does not come off, and the grounded state can be maintained.

That is, for example, when the intercooler 21 is pushed backward in the event of a collision accident, a bending force is applied to the front bracket 39 so as to tilt the standing plate 42 backward, but the intercooler 21 is separated from the front bracket 39. If an excessive rearward external force is applied to the support plate 43 of the upright plate 42 without doing so, the weakening line 42c (constricted portion) located above the terminal plate 60 is broken, as shown in FIG. The ground function is maintained. Therefore, if the function of the engine is maintained, it is possible to take an evacuation action by self-driving.

Even if excessive vibration acts on the front bracket 39, the front bracket 39 may be damaged. However, since the damaged portion is constant above the ground wire fixing portion 42a, the ground function is maintained in this case as well. Can continue driving.

As shown in FIG. 5B, the side plate 55 of the front bracket 39 is connected to both the support plate 43 and the upright plate 42. Therefore, the rigidity of the portion of the front bracket 39 above the weakening line 42c is remarkably high. As a result, it is ensured that breakage will occur at the weakened line 42c in the event of an accident.

It is also possible to form a V groove 42d that promotes stress concentration at one end or both ends of the weakening line 42c. Further, as the weakening means, a slit or a hole can be provided instead of or in addition to forming the constricted portion.

Although the embodiments of the present invention have been described above, the present invention can be embodied in various other ways. For example, the baffle plate can be integrally formed with a bracket such as a front bracket. Further, the bracket supporting the intercooler can adopt various forms such as a form bent in a crank shape in a side view. The bracket can also be fixed to the head cover or the cylinder block. Further, it is possible to support the ventilation casing of the intercooler with the front bracket.

To describe the form of the intercooler, the intercooler does not necessarily have to include a ventilation casing, and may be a heat exchange unit only. It is also possible to provide the hood with the traveling wind guide function of the ventilation casing.

The present invention can be embodied in an internal combustion engine for an automobile equipped with an intercooler. Therefore, it can be used industrially.

2 Cylinder head that constitutes the engine body 5 Transmission 9 Exhaust turbocharger 14 Compressor housing 17 Air cleaner 18, 20, 34 Intake duct 21 Intercooler 23 Upstream side tank that constitutes a heat exchange unit 26 Cooling water distributor 27 Radiator 31 Ventilation casing of intercooler 32 Core part of intercooler 33 Downstream tank constituting a heat exchange unit 39 Front bracket (bracket of claim)
40 Rear Bracket 42 Standing Plate 43 Support Plate 44 Mounting Plate 48 Bolt Insertion Hole of Mounting Plate 48a Cut Opening Part

Claims (2)

An engine main body having a crankshaft, an air-cooled intercooler attached to the upper part thereof, a transmission fixed to one end face of the front and rear ends of the engine main body viewed from the crankshaft line direction, and the engine A cooling water distributor arranged in an upper part of the transmission in the main body, the intercooler being located above the cooling water distributor so as to protrude from one end of the engine main body; It is arranged so that the traveling wind can escape almost downward,
And, in the engine room in which the radiator is arranged at the front end, in the internal combustion engine in which the transmission is located behind the radiator and the crankshaft is arranged in a horizontal posture in which the crankshaft is longitudinal in the vehicle width direction,
A bracket that supports the intercooler is fixed to an upper portion of the engine body, and the bracket is provided with a baffle plate that suppresses the wind that has passed through the radiator from flowing into the intercooler from below. ,
Internal combustion engine for automobiles. While a horizontal support plate is provided at the upper end of the bracket, a mounting plate that is mounted on the support plate of the bracket is provided at the front portion of the intercooler.
In the support plate and the mounting plate, there is a bolt insertion hole through which a bolt for fastening them penetrates,
Either or both of the bolt insertion hole of the support plate and the bolt insertion hole of the mounting plate are cut open in the front-rear direction so that the bolt can be removed when a backward force is applied to the intercooler. Is
The internal combustion engine for an automobile according to claim 1.

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