JP2000045779A - Intake device for engine with supercharger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the intake cooling efficiency while properly keeping the loadability to an engine room, in an intake device for an engine where the engine and an automatic transmission(AT) are horizontally loaded, the engine room is made compact in the longitudinal direction of a vehicle, and a turbo supercharger and an intercooler are mounted on an intake path of the engine. SOLUTION: An intercooler 9 is mounted at a side of an AT in the car width direction to a radiator 1. A ventilating space 31 through which the air from the intercooler 9 passes, is mounted between a battery 26 mounted at an upper part of the AT and an engine 3. A second intake pipe 14 at an upstream side of the turbo supercharger 8 and a fourth intake pipe 16 at a downstream side are mounted on the ventilating space 31 in such a manner that they are extended in the longitudinal direction of the vehicle. The downstream side of the fourth intake pipe 16 is mounted in such a manner that it is overlapped to an intercooler core 19 when observed from the longitudinal direction of the vehicle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intake device for a supercharged engine equipped with a supercharger for compressing intake air.
In particular, it belongs to a technical field related to a layout of an intercooler, an intake pipe, and the like in an engine mounted horizontally so that an output shaft extends in a vehicle width direction.

[0002]

2. Description of the Related Art Conventionally, a turbocharger has been provided in an intake passage of an engine in order to improve output, and the temperature of intake air compressed by the turbocharger becomes higher than 150 ° C. Therefore, it is also known to provide an intercooler in the intake passage downstream of the supercharger to lower the intake air temperature in order to eliminate adverse effects such as a reduction in intake air charging efficiency and an increase in combustion temperature.

As a layout of an intercooler in the above-described supercharged engine, for example, a conventional Japanese Utility Model Laid-Open No. 2-54 is known.
As disclosed in Japanese Patent Publication No. 325 and European Patent Publication 0178266, an intercooler for cooling intake air has been proposed which is arranged adjacent to a radiator in front of an engine room. Thus, by arranging the intercooler next to the radiator,
The traveling wind from the front side of the vehicle is directly taken into the intercooler, and the heat radiation can be improved.

[0004]

By the way, in recent years, in order to meet the demand for increasing the living space of a passenger car, an engine is mounted horizontally to make the engine room compact, especially in the longitudinal direction of the vehicle. However, in this case, the flow of the traveling wind passing through the radiator or the intercooler is likely to be obstructed by the engine on the rear side, and the backflow increases, the airflow decreases, and the cooling efficiency of the radiator or the intercooler decreases. There is difficulty to do.

[0005] Further, with the downsizing of the engine room, restrictions on the layout of electric components such as on-vehicle batteries and auxiliary equipment such as various pumps naturally become stricter. Particularly, in the case of an engine provided with a supercharger or an intercooler, It is not easy to arrange them and compactly manage the intake pipe.

That is, in the case where the engine room is compacted by mounting the engine horizontally, the conventional intake system of the engine can achieve both good mounting performance in the engine room and improvement in cooling efficiency. It becomes difficult.

[0007] The present invention has been made in view of such a point, and an object thereof is to provide a compact engine room by mounting an engine horizontally.
An object of the present invention is to enhance intake cooling efficiency while maintaining good mounting of an engine intake device in an engine room.

[0008]

In order to achieve the above-mentioned object, in the solution of the present invention, the arrangement of the intercooler and the intake piping are devised in consideration of the arrangement of the engine and the transmission. The running wind that passed through the cooler smoothly flowed through the compact engine room.

More specifically, according to the first aspect of the present invention, the engine is mounted laterally behind the radiator in the engine room with the output shaft extending in the vehicle width direction, and is mounted on the engine in the axial direction of the output shaft. A transmission is provided, and a supercharger for compressing intake air and an intercooler for cooling intake air compressed by the supercharger are provided in an intake passage for supplying intake air to a combustion chamber of the engine. It is assumed that the intake device of a turbocharged engine is used. The intercooler is arranged on the radiator so as to be arranged on the same side in the vehicle width direction as the side on which the transmission is arranged on the engine.

According to this configuration, the traveling wind from the front side of the vehicle is directly taken into the intercooler next to the radiator, and after passing through the intercooler, flows smoothly above the transmission behind the intercooler, so that the engine room From below the vehicle body floor. That is, since the height of the transmission is generally lower than the cylinder head or the cylinder block of the engine, if the intercooler is arranged on the side where the transmission is located in the vehicle width direction with respect to the radiator, the transmission as viewed from the vehicle front-rear direction is provided. Can be secured as a ventilation space through which the traveling wind from the intercooler flows smoothly. Thereby, the cooling efficiency of the intercooler can be sufficiently increased.

According to the second aspect of the present invention, a vehicle-mounted battery is disposed above the transmission according to the first aspect of the present invention, and an intercooler passes between the battery and the engine when viewed from the vehicle front-rear direction. It is assumed that a ventilation space through which the traveling wind passes is provided. Thus, a ventilation space can be secured between the battery and the engine while disposing the battery above the transmission.

According to a third aspect of the present invention, a front frame extending in the vehicle front-rear direction is provided on both sides in the vehicle width direction of the engine room in the second aspect of the invention, and a battery is disposed between the front frames. It is assumed that Thereby, the arrangement of the battery is specified specifically between the left and right front frames.

According to the invention described in claim 4, claim 1 or 2
The supercharger in the described invention is a turbocharger arranged on the rear side of the vehicle with respect to the engine, and primary and secondary intake pipes respectively forming intake passages upstream and downstream of the turbocharger are provided. , In the ventilation space so as to extend in the vehicle front-rear direction.

That is, in an engine mounted horizontally so that the exhaust system is located on the rear side of the vehicle, the turbocharger is always arranged on the rear side of the engine with respect to the engine. For this reason, when the intercooler is arranged in front of the engine room, it is not easy to fit the intake pipe between the supercharger and the intercooler compactly in the engine room. On the other hand, in the present invention, the secondary intake pipe downstream of the turbocharger extends in the vehicle front-rear direction from the transmission side bypassing the engine, and therefore can be arranged compactly without protruding above the engine.

Further, since the secondary-side intake pipe is disposed in the ventilation space through which the traveling wind flows so as to extend in the direction of the flow, the secondary-side intake pipe is cooled by the traveling wind without obstructing the flow of the traveling wind. You. Therefore, the intake air cooling efficiency is further increased.

According to a fifth aspect of the present invention, the downstream side of the secondary intake pipe in the fourth aspect of the invention is disposed so as to overlap with the core of the intercooler when viewed from the vehicle front-rear direction. Section is connected to the intercooler. Thus, the downstream side of the secondary-side intake pipe between the turbocharger and the intercooler is efficiently cooled by the traveling wind passing through the intercooler, which can also increase the intake air cooling efficiency. .

According to a sixth aspect of the present invention, in the invention of the fourth aspect, above the primary and secondary intake pipes in the ventilation space, auxiliary machines driven by a valve system camshaft of the engine are provided. It is assumed that they are provided. Because of this, the accessory driven by the valve train camshaft is located in the vehicle width direction with respect to the engine. It is easy to make the vehicle compact in the longitudinal direction of the vehicle.

According to a seventh aspect of the present invention, the intercooler and the radiator according to the first aspect of the present invention are formed integrally with each other and attached to the vehicle body via an elastic body. This constitutes a dynamic damper using the intercooler and the radiator as mass members. In the horizontally mounted engine, the engine vibration caused by the rotation fluctuation of the output shaft can be effectively attenuated by the dynamic damper, whereby the idle vibration can be reduced.

According to an eighth aspect of the present invention, the elastic body according to the seventh aspect of the present invention is arranged at the upper and lower ends of the intercooler and at the upper and lower ends of the radiator remote from the intercooler. I do.

As a result, the mass member including the intercooler and the radiator is separated from each other on both sides in the vehicle width direction.
Since it is attached to the vehicle body at the corner, even if it is attached to the vehicle body via an elastic body so as to be able to move up and down, it does not swing much around the axis in the vehicle longitudinal direction. That is, it is possible to suppress the inclination and the sway in the left-right direction while securing the amount of vertical displacement required as the mass member of the dynamic damper.

According to a ninth aspect of the present invention, the intercooler according to the seventh aspect of the present invention is provided with a radiator support for supporting the radiator.

That is, in general, the intercooler has a higher rigidity than the radiator in order to receive high-pressure intake air from the supercharger. Therefore, by providing a radiator support portion on the high-rigidity intercooler and integrally supporting the radiator, the intercooler and the radiator can be integrally and highly rigidly formed without particularly increasing the rigidity of the radiator itself. Can be configured.

[0023]

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

1 to 3 show an engine room of a vehicle in which an intake device A of a supercharged engine according to an embodiment of the present invention is mounted. In each of the drawings, reference numeral 1 denotes a radiator disposed on the front side of an engine room. The lower end of the radiator 1 is supported by a cross member (not shown) extending in the vehicle width direction, while the upper end is also mounted in the vehicle width direction. And is supported by a shroud upper panel 2 extending therefrom. Behind the radiator 1, an engine 3 is mounted horizontally with its crankshaft (output shaft) oriented in the vehicle width direction, and extends forward and backward on both sides of the engine room in the left-right direction (vehicle width direction).
The front frames 4 and 4 are supported via engine mounts. An automatic transmission (hereinafter, referred to as AT) 5 is attached to the engine 3 on the left side of the vehicle (the right side in FIGS. 1 and 2).

The engine 3 is an in-line four-cylinder diesel engine (not shown) having four cylinders arranged side by side in the vehicle width direction. An intake passage 6 for supplying intake air to a combustion chamber in each cylinder is provided with: An air cleaner 7, a turbocharger 8, an intercooler 9, and a surge tank 10 (only shown in FIG. 2) are arranged in this order from the upstream side. More specifically, the intake passage 6 is formed by connecting a plurality of resin-made intake pipes, and has an upstream end connected to a case of the air cleaner 7 and a first intake pipe 12 extending in a vertical direction, and an upstream end connected to the first intake pipe. A second intake pipe 13 is connected to the downstream end of the pipe 12, extends above the AT 5 in the vehicle front-rear direction, and has a downstream end connected to the upstream side of the turbocharger 8. The first and second intake pipes 12 and 13 constitute a primary intake pipe upstream of the turbocharger 8.

The turbocharger 8 is mounted on an exhaust manifold 11 (shown only in FIG. 2) located on the rear side of the vehicle with respect to the engine 3 and receives high-temperature and high-pressure exhaust gas from the exhaust manifold 11. The scroll-shaped turbine case 8a and the scroll-shaped blower case 8b communicating with the intake passage 6 are connected by a center housing. In the turbine case 8a,
Although not shown, a turbine wheel rotated by the exhaust gas is accommodated therein, while a blower case 8b accommodates a blower impeller that rotates at a high speed integrally with the turbine wheel, and the blower impeller defines The intake air sucked in from the upstream side is compressed in the blower case and is pressure-fed to the downstream side.

The intake passage 6 on the downstream side of the turbocharger 8
A connection pipe 14 connected to the turbocharger 8 and a third intake pipe connected at an upstream end to the connection pipe 14 and extending in the vehicle front-rear direction above the AT 5 in parallel with the second intake pipe 13. 1
5, the upstream end is connected to the downstream end of the third intake pipe 15,
A fourth intake pipe 16 extending vertically and having a downstream end connected to the intercooler 9. The connection pipe 14, the third intake pipe 15, and the fourth intake pipe 16 constitute a secondary-side intake pipe.

The intercooler 9 is arranged on the left side of the radiator 1 on the vehicle, that is, on the side where the AT 5 is arranged with respect to the engine 3, and runs through high-temperature and high-pressure intake air compressed by the turbocharger 8. It is designed to be cooled by wind and the like. That is, the intercooler 9 has an upper tank 17 and a lower tank 18 on the upper and lower sides, respectively, and the lower end of the fourth intake pipe 16 is connected to the lower tank 18. Accept high temperature and high pressure intake. The intake air from the turbocharger 8 is cooled by the wind passing through the intercooler core 19 while flowing from the lower tank 18 through the intercooler core 19 to the upper tank 17.

The upstream end of the fifth intake pipe 20 is connected to the upper tank 17.
Is connected to a surge tank 10 attached to the cylinder head of the engine 3, and the intake air cooled by the intercooler 9 passes from the upper tank 17 through the fifth intake pipe 20 to the surge tank 10. From there, the fuel is distributed and supplied to the combustion chamber in each cylinder of the engine 3.

At the rear side of the intercooler 9 and the radiator 1, as shown in FIG.
Two fans, a main cooling fan 24 and an auxiliary fan 25, which are rotated by the motors 2 and 23, are mounted.
The main cooling fan 24 is disposed on the left side of the vehicle (on the side of the intercooler 9) so as to overlap with both the cores of the intercooler 9 and the radiator 1 when viewed from the vehicle front-rear direction. On / off switching operation. The auxiliary fan 25 is disposed on the right side of the vehicle, and is turned on / off in accordance with the operation state of the air conditioner. Since the capacity of the auxiliary fan 25 is smaller than that of the main cooling fan 24, a relatively thin one is used, and a large space for arranging auxiliary equipment between the auxiliary fan 25 and the engine 3 is secured. . The detailed configurations of the intercooler 9 and the radiator 1 will be described later.

The main cooling fan 24 and the auxiliary fan 25
26 that supplies electric power to the electric motors 22 and 23
Are arranged on the left side and rear side of the vehicle in the engine room. The battery 26 is located at substantially the same height as the cylinder head cover 3 a of the engine 3, is spaced apart from the cylinder head cover 3 a in the vehicle width direction, and is located on the vehicle inner side of the left front frame 4. A vacuum pump 28 and a hydraulic pump 29 as accessories driven by a valve system camshaft (not shown) are provided on an end surface of the engine 3 (an end surface on the left side of the vehicle) facing the battery 26.
(Shown only in FIG. 3). The vacuum pump 28 supplies a negative air pressure to a vacuum booster (so-called master back) for a brake (not shown), and the hydraulic pump 29 supplies an operating hydraulic pressure to a power steering device of the vehicle. is there. Although shown only in FIGS. 2 and 3, reference numeral 30 denotes a reservoir tank of the hydraulic pump 29.

As shown in FIG. 1, when the engine room of this embodiment is viewed from the front side of the vehicle toward the rear side of the vehicle, the space above the AT 5 that overlaps the main cooling fan 24, in other words, when viewed from the front-back direction of the vehicle. The space between the battery 26 and the engine 3 and the space between the battery 26 and the AT 5 are ventilation spaces through which the wind sucked by the main cooling fan 14 through the intercooler 9 and the radiator 1 flows in the front direction of the vehicle. 31. That is, as shown by the bold arrow in FIG. 3, the traveling wind and the like passing through the intercooler 9 and the radiator 1 smoothly flow through the ventilation space 31 behind the vehicle from the front side to the rear side, and from the rear side of the engine room. It flows out below a vehicle body floor (not shown). Further, between the battery 26 and the engine 3, a second intake pipe 13 and a fourth intake pipe 16 extend under the vacuum pump 28 or the like and extend in the vehicle front-rear direction. Cooled by the wind without disturbing.

In FIG. 2, reference numerals 33 and 34 denote an upper hose and a lower hose which connect the water jacket in the engine 3 and the radiator 1, respectively. Also,
2 and 3, reference numeral 35 denotes a sound insulation cover that covers the upper part of the cylinder head cover 3a of the engine 3. This sound insulation cover 35 corresponds to the uppermost position of the engine 3 and is inclined so as to gradually decrease from the rear side to the front side of the vehicle along the hood line B of the vehicle.
A fuel injection pump (auxiliary machine) 40 for supplying high-pressure fuel to the combustion chamber of each cylinder of the engine 3 is provided. further,
As shown only in FIG. 3, below the fuel injection pump 40, an alternator 42 as an accessory and a compressor 43 for an air conditioner are arranged in a vertical direction.

Next, the configurations of the radiator 1 and the intercooler 9 will be described in detail with reference to FIGS.

As shown in FIGS. 4 and 5, the radiator 1 has an upper tank 45 and a lower tank 46 at the top and bottom, respectively, which are integrally connected together with an intermediate radiator core 47 by a side frame. Type.

The upper tank 45 is formed by integrally attaching an aluminum alloy plate member also extending in the vehicle width direction to a lower side of a resin cover member having an inverted U-shaped cross section extending in the vehicle width direction. A cooling water inlet (connecting portion) 45a to which the upper hose 33 is connected is provided at a position closer to the left side of the vehicle than the center position of the cover member in the vehicle width direction. The lower tank 46 is configured similarly to the upper tank 45, and a cooling water outlet 46a to which the lower hose 34 is connected is provided at a position closer to the right side of the vehicle than the center position in the vehicle width direction.

Further, although not shown, the radiator core 47 is formed by integrally forming a large number of tubes extending vertically and a large number of fins between the tubes.
Upper and lower ends of each tube are
And penetrates the plate member of the lower tank 46 and faces the inside of the tank. And the upper hose 33
The high-temperature cooling water returned from the engine 3 through the inside
The gas flows down from the upper tank 45 through the tube of the intercooler core 47, is cooled by running wind and the like, reaches the lower tank 46, and is supplied to the engine through the lower hose 44. Reference numeral 48 denotes a filler cap for opening and closing a supply hole for supplying fresh cooling water.

The sectional area of the upper tank 45 on the left side of the vehicle (on the side of the intercooler 9) with respect to the cooling water inlet portion 45a is larger than that on the opposite side (the right side of the vehicle), for example, approximately twice. The cooling water from the engine 3 is distributed to the left and right sides of the upper tank 45 with the cooling water inlet 45a as a boundary, and flows more in the upper tank 45 on the left side of the vehicle having a large cross-sectional area than on the right side of the vehicle. That is, the radiator core 47 on the left side of the vehicle is cooled by the main cooling fan 45 so that the wind is sucked out and is efficiently cooled.
Since the flow rate of the cooling water in the inside 7 is relatively large, the cooling efficiency of the radiator 1 as a whole is enhanced.

As shown in FIGS. 6 to 8, the intercooler 9 has an upper tank 17, a lower tank 18, and an intercooler core 19 integrally formed of an aluminum alloy. The radiator 1 has a higher rigidity than the radiator 1. Further, the thickness of the intercooler core 19 is approximately twice as large as that of the radiator core 47, so that the heat radiation can be enhanced without reducing the pitch of the intercooler core 19. That is, the cooling efficiency can be increased while the pressure loss of the traveling wind is kept small.

The upper tank 1 of the intercooler 9
In FIG. 7, an intake outlet portion 17a extending obliquely upward on the rear side of the vehicle and connected to the fifth intake pipe 20 is formed. In the vicinity of the intake outlet 17a, there is provided a vehicle-body-side connecting portion 17b which projects upward and into which a rubber mount 52 described later is fitted. On the other hand, the lower tank 18
In the lowermost position of, that is, the lowermost position of the intercooler 9, an intake inlet portion 18a extending substantially horizontally to the rear side of the vehicle and connected to the fourth intake pipe 16 is formed. In the vicinity of the intake port 18a, there is provided a vehicle-body-side connecting portion 18b which protrudes downward and into which a rubber mount 53 described later is fitted.

The upper tank 17 and the lower tank 18 of the intercooler 9 are provided with brackets (radiator support portions) 17c and 18c each having an L-shaped cross section and extending substantially horizontally in the vehicle width direction. As shown in FIG. 5, the brackets 17c and 18c are connected to an upper tank 45 and a lower tank 46 of the radiator 1, respectively. As described above, the bracket 17 for supporting the radiator 1 on the intercooler 9 having high rigidity is provided.
By providing the radiator 1 integrally with the radiator 1 by providing the radiator 1 and c, without increasing the rigidity of the radiator 1 itself,
The intercooler 9 and the radiator 1 can be configured integrally and with high rigidity.

The intercooler 9 and the radiator 1
Are positioned such that the rear surfaces of the cores are arranged substantially on the same plane, and the impellers of the main cooling fan 24 disposed over both of the cores are arranged on both cores 19 arranged substantially on the same plane. , 47 from the intercooler 9 and the radiator 1 efficiently. The main cooling fan 24 includes an intercooler core 1.
9 and a fan shroud 24a that covers the radiator core 47 on the left side of the vehicle with respect to the cooling water inlet portion 45a, so that the wind can be sufficiently sucked from the left side of the radiator 1 on the vehicle, that is, from the side where the flow rate of the cooling water is large. It has become.

On the other hand, the front surface of the radiator core 47 is located on the rear side of the vehicle with respect to the front surface of the intercooler core 19, and a cooler condenser 50 (see FIG. 2) for condensing the refrigerant of the air conditioner is disposed there. The front surface of the cooler condenser 50 is located on substantially the same plane as the front surface of the intercooler core 19. That is, the cooler condenser 50 is disposed in a dead space between the radiator 1 having a smaller thickness than the intercooler 9 and the radiator grille in front of the radiator 1.

The intercooler 9 and the radiator 1
Constitutes a dynamic damper for attenuating idle vibration of the engine 3. That is, as shown in FIGS. 4 and 5, two upper rubber mounts 52, 52 and two lower rubber mounts are provided at both ends in the vehicle width direction on both upper and lower surfaces of the intercooler 9 and the radiator 1, respectively. 53, 53 are provided, and the upper two are provided on the shroud upper panel 2 via brackets 54, 54.
(See FIG. 2), while the lower two are connected to a cross member of the vehicle body.

As described above, the mass member composed of the intercooler 9 and the radiator 1 is
Are mounted so as to be able to move up and down with respect to the vehicle body, so that engine vibrations caused by rotational fluctuations of the crankshaft of the horizontally mounted engine 3 can be effectively attenuated. The four rubber mounts 52, 53,... Correspond to a mass member including the intercooler 9 and the radiator 1,
Since they are arranged at the four corners separated from each other in the vehicle width direction, tilting and shaking in the left and right directions are suppressed while securing the amount of vertical displacement required as a mass member. The effect is fully exhibited.

Therefore, according to the intake system A for the engine according to this embodiment, the intercooler 9 is disposed adjacent to the radiator 1 in the vehicle width direction and on the AT5 side, so that the rear side of the intercooler 9 is provided. Above the AT5 at a position lower than the cylinder head etc. of the engine 3,
The ventilation space 31 through which the wind from the intercooler 9 passes can be used. As a result, it is possible to secure a sufficient amount of air passing through the intercooler 9 and increase the intake air cooling efficiency.

Further, even if the turbocharger 8 is arranged on the rear side of the vehicle with respect to the engine 3, the second and fourth intake pipes 13 and 16 upstream and downstream of the turbocharger 8 are connected to the engine 5 from the AT5 side. Engine 3
So that it does not protrude upward. In addition, since the second and fourth intake pipes 13 and 16 extend in the direction in which the wind flows in the ventilation space 31, the flow of the wind is hardly obstructed. That is, the intake pipe can be compactly laid out in the engine room without obstructing the flow of the wind passing through the intercooler 9.

Further, the upstream side of the fourth intake pipe 16 is cooled by wind flowing through the ventilation space 31, while the downstream side extends so as to overlap the intercooler core 19 when viewed in the vehicle front direction. It is cooled efficiently by the wind passing through the intercooler core 19. As described above, the high-temperature and high-pressure intake air from the turbocharger 8 to the intercooler 9 is also cooled beforehand inside the fourth intake pipe 16, so that the cooling efficiency of the intake air can be further enhanced.

In addition, in this embodiment, the vacuum pump 28 and the hydraulic pump 29 are driven by a valve train camshaft, and are arranged on the rear end surface of the engine 3, that is, on the left side of the vehicle. Engine 3 side,
That is, the protrusion in the vehicle front-rear direction is suppressed as compared with the case of arranging in the vehicle front-rear direction. Also, of the two fans 24 and 25 on the vehicle front side of the engine 3,
A thin auxiliary fan 24 is arranged on the front end side of the engine (right side of the vehicle) to increase the space between the auxiliary fan 24 and the engine 3. And, since the fuel injection pump 40, the alternator 42 and the compressor 43 are arranged vertically in the space thus secured, the engine room can be made compact in the vehicle front-rear direction while ensuring the mountability of accessories. it can.

[0050]

As described above, according to the intake system for a supercharged engine according to the first aspect of the present invention, the engine is arranged by arranging the intercooler on the transmission side in the vehicle width direction with respect to the radiator. The space above the transmission at a position lower than the cylinder head or the like can be secured as a ventilation space through which the traveling wind from the intercooler flows smoothly, and thereby the cooling efficiency of the intercooler can be sufficiently increased.

According to the second aspect of the invention, it is possible to secure a ventilation space between the battery and the engine while disposing the vehicle-mounted battery above the transmission.

According to the fourth aspect of the invention, the intake pipe between the turbocharger and the intercooler on the rear side of the vehicle with respect to the engine is detoured from the transmission side to the engine, so that the intake pipe does not protrude upward from the engine. Can be placed in Further, since the secondary-side intake pipe from the turbocharger to the intercooler is cooled in the ventilation space without obstructing the flow of the running air, the intake air cooling efficiency can be further increased.

According to the fifth aspect of the present invention, since the downstream side of the secondary intake pipe can be efficiently cooled by the traveling wind passing through the intercooler, the intake air cooling efficiency can be further improved.

According to the sixth aspect of the present invention, by arranging the auxiliary machine in the vehicle width direction with respect to the engine, it is easy to make the engine room compact in the vehicle longitudinal direction.

According to the seventh aspect of the present invention, the idle vibration of the engine can be reduced by the dynamic damper having the intercooler and the radiator as mass members.

According to the eighth aspect of the present invention, the elastic member is disposed at the four corners separated from each other in the vehicle width direction with respect to the mass member, so that the vertical displacement of the mass member is ensured while securing the vertical displacement of the mass member. Can suppress the inclination and the sway of the dynamic damper, so that the effect of the dynamic damper can be sufficiently obtained.

According to the ninth aspect of the present invention, the radiator is integrally supported on the intercooler having higher rigidity, whereby the intercooler and the radiator can be integrally and highly rigid.

[Brief description of the drawings]

FIG. 1 is a front view showing an arrangement configuration of an engine room according to an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a view showing the flow of wind, omitting a cooling fan and the like.
FIG.

FIG. 4 is a front view showing a configuration of an intercooler and a radiator as viewed from a rear side of the vehicle.

FIG. 5 is a plan view of FIG. 4;

FIG. 6 is a front view showing the configuration of the intercooler as viewed from the rear side of the vehicle.

FIG. 7 is a plan view of FIG. 6;

FIG. 8 is a left side view of FIG.

[Explanation of symbols]

A intake device for engine 1 radiator 3 engine 4, 4 front frame 5 transmission (AT) 6 intake passage 8 turbocharger 9 intercooler 12 first intake pipe (primary intake pipe) 13 second intake pipe (primary) Side intake pipe) 14 connection pipe (secondary intake pipe) 15 third intake pipe (secondary intake pipe) 16 fourth intake pipe (secondary intake pipe) 17c, 18c bracket (radiator support) 19 intercooler Core 26 Battery 28 Vacuum pump (auxiliary equipment) 31 Ventilation space 52, 53 Rubber mount (elastic body)

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Minoru Shimomori 3-1, Fuchi-machi, Shinchu, Aki-gun, Hiroshima Mazda Co., Ltd. (72) Noriaki Fujita 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda Stock Inside the company (72) Inventor Iwa ▲ Saki ▼ Ryutoku 3-1, Fuchi-cho, Fuchu-cho, Aki-gun, Hiroshima Mazda Co., Ltd. (72) Inventor Toshihiko Kawamura 3-1, Fuchi-cho, Fuchu-cho, Aki, Hiroshima Mazda F Terms (reference) 3D035 CA19 CA25 CA26 CA28 3G005 DA02 EA04 EA14 FA00 FA54

Claims (9)

[Claims] An engine is mounted horizontally on the rear side of a radiator in an engine room with an output shaft extending in a vehicle width direction, and a transmission is disposed in an axial direction of the output shaft with respect to the engine. In a suction device of a supercharged engine, a supercharger for compressing intake air and an intercooler for cooling intake air compressed by the supercharger are provided in an intake passage for supplying intake air to a combustion chamber of the engine. The intake device for a supercharged engine, wherein the intercooler is arranged on the same side in the vehicle width direction as a side on which the transmission is arranged on the engine with respect to the radiator. 2. The vehicle according to claim 1, wherein a vehicle-mounted battery is disposed above the transmission, and a ventilation space for passing a traveling wind passing through an intercooler is provided between the battery and the engine when viewed from the vehicle front-rear direction. An intake device for a supercharged engine, wherein the intake device is provided. 3. The vehicle according to claim 2, wherein a front frame extending in the vehicle front-rear direction is provided on each side of the engine room in the vehicle width direction, and a battery is disposed between the front frames. Intake device for a charged engine. 4. The supercharger according to claim 1, wherein the supercharger is a turbocharger disposed on a rear side of the vehicle with respect to the engine, and a primary part that forms an intake passage upstream and downstream of the supercharger, respectively. The intake device for a supercharged engine, wherein the side and secondary side intake pipes are arranged in the ventilation space so as to extend in the vehicle front-rear direction. 5. The intercooler according to claim 4, wherein a downstream side of the secondary-side intake pipe is disposed so as to overlap a core of the intercooler when viewed from the front-rear direction of the vehicle, and a downstream end thereof is connected to the intercooler. An intake device for a supercharged engine. 6. The air conditioner according to claim 4, wherein the ventilation space is provided above the primary-side and secondary-side intake pipes.
An intake device for an engine with a supercharger, wherein an auxiliary machine driven by a camshaft of a valve train of the engine is provided. 7. The air intake device for a supercharged engine according to claim 1, wherein the intercooler and the radiator are formed integrally with each other and attached to a vehicle body via an elastic body. 8. The engine with a supercharger according to claim 7, wherein the elastic bodies are respectively disposed at upper and lower ends of the intercooler and upper and lower ends of the radiator that are farther from the intercooler. Intake device. 9. The intake device for a supercharged engine according to claim 7, wherein the intercooler is provided with a radiator supporting portion for supporting the radiator.