JP2020050098A - Intake air introduction device of vehicle - Google Patents

Abstract

To prevent that hot air which has passed a radiator, and is raised in a temperature wraps around a lower part at this side, and intrudes into an intake duct.SOLUTION: An upper radiator support 9 is arranged at this side of an air cleaner 3, and an upper part of the radiator 7 and an upper part of an air conditioner capacitor 8 are attached to the upper radiator support 9. A capacitor seal plate 10 is arranged at this side of the upper radiator support 9. An intake duct 4 of the air cleaner 3 is oriented toward the capacitor seal plate 10 while straddling the upper radiator support 9. An intake port 4d which is formed at a tip is opened downward toward the capacitor seal plate 10. An intake hole 12 is formed at the capacitor seal plate 10. A cover 13 for blocking the intrusion of hot air by surrounding the intake port 4d is arranged at an upper part of the capacitor seal plate 10.SELECTED DRAWING: Figure 2

Description

  TECHNICAL FIELD The present invention relates to an intake air introduction device for a vehicle.

  The vehicle (automobile) has an engine room in the front, and an engine, an air cleaner, a radiator, a condenser for an air conditioner, and the like are arranged in the engine room. The radiator and the condenser for the air conditioner are arranged at the forefront of the engine room because they exchange heat with running air and suction air from a fan.

  On the other hand, the air cleaner is located behind the radiator. The radiator is connected to an intake duct for sucking air, and various structures have been proposed for the intake duct. As an example thereof, Patent Literature 1 discloses that an intake duct is formed in a U-shape in a horizontal direction in plan view and is opened forward in an upper portion of a radiator.

  In Patent Literature 1, while the air flows into the intake duct from the near side, the air changes direction in the left-right direction and enters the intake duct. This direction change prevents foreign substances such as snow from being sucked into the air cleaner.

JP 2011-213328 A

  Now, the air intake duct of the air cleaner is located above the radiator, but the air (hot air) that has passed through the radiator (and the air conditioner condenser) and heated, hits the engine, etc., and changes its direction upward. It may be wrapped around by the guide action and enter the intake port of the intake duct. If the suction port of the intake duct is opened forward as in Patent Literature 1, there is a concern that hot air may appear significantly.

  When hot air is mixed into the intake air, the air expands and the filling efficiency decreases, and even if the accelerator is depressed, an output cannot be obtained according to the depressed amount, and drivability may be degraded.

  The present invention has been made in view of such circumstances, and even if a hot air wraparound phenomenon occurs in an engine room, it is possible to take in the unheated atmosphere into the intake duct without being affected by the phenomenon. Is to be provided.

The present invention is
`` At the front of the engine room provided at the front of the vehicle body, a left and right longitudinal radiator support with the upper end of the radiator is arranged, and the intake duct connected to the air cleaner straddles the said radiator support. Are located in
An intake port of the intake duct opens downward toward a front frame member located in front of the apparatus support, while an intake hole located below the intake duct is opened in the front frame member. And
Also, a cover is provided to prevent the hot air passing through the radiator from flowing upward and entering the intake port from above. "
It is a configuration.

  According to the present invention, even if the hot air generated by passing through the radiator changes its direction upward and goes forward along the lower surface of the hood, it is possible to prevent the hot air from being sucked into the intake port due to the presence of the cover.

  Air is sucked into the intake duct from an intake hole formed in the front frame material, but outside air is sucked by a radiator fan below the front frame material. Air that has not passed through the condenser) is sucked. For this reason, it is possible to prevent a decrease in the charging efficiency and obtain an output corresponding to the depression of the accelerator. Therefore, deterioration of drivability can be prevented.

  By the way, the upper part of the radiator is attached to the left and right horizontally long apparadiator support, and in general, the apparadiator support is often located at the upper end of the engine room. In some cases, an upper support member is provided at a higher position, and the upper support member may be formed at the upper end of the engine compartment.

  When the upper radiator support constitutes the upper end of the engine room, a seal plate having substantially the same height as that of the upper radiator support is arranged in front of the upper radiator support, and the intake port of the intake duct is opened below the seal plate. In this case, it is possible to prevent hot air from entering the intake port by the seal plate.However, if the upper support is provided, it is difficult to dispose the seal plate. It was difficult to prevent intrusion into the mouth.

  In contrast, in the present invention, the cover attached to the front frame member can prevent hot air from entering, so that even if the seal plate cannot be arranged, the hot air can be firmly prevented from entering the intake duct. Therefore, the present invention is particularly advantageous when the upper support is provided.

It is a principal part top view of embodiment. FIG. 2 is a sectional view taken along line II-II of FIG. 1. FIG. 3 is an enlarged view of a main part of FIG. 2.

  Next, an embodiment of the present invention will be described with reference to the drawings. Hereinafter, the terms front and rear, left and right are used to specify the direction, but this direction is defined as the direction viewed from the driver. Therefore, the front-back direction is the longitudinal direction of the vehicle, and the left-right direction is the width direction of the vehicle. The direction is clearly shown in FIG. 1 just in case.

(1). Structure of the embodiment As schematically shown in FIG. 1, an engine (engine body) 2 of an internal combustion engine is placed horizontally in an engine room 1 provided at a front portion of a vehicle body with a crankshaft in a left-right longitudinal posture. It is arranged in. The engine main body 2 has an exhaust side on the front side and an intake side on the rear side.

  An air cleaner 3 is arranged in the front of the engine room 1 and to the left of the engine 2. As shown in FIG. 2, the air cleaner 3 has a dust chamber 3a at a lower part and a clean chamber 3b at an upper part, and an intake duct 4 is connected to an upper surface of a front chamber 3c provided integrally with a front part of the dust chamber 3a. Have been. The start end of the first intake hose 5 is connected to the clean chamber 3b of the air cleaner 3. The end of the first intake hose 5 is connected to the inlet port of the compressor housing in the exhaust turbocharger. The air cleaner 3 and the intake duct 4 are made of synthetic resin.

  Although not shown, the starting end of the second intake hose is connected to the outlet port of the compressor housing in the exhaust turbocharger. In FIG. 1, reference numeral 6 denotes a third intake hose having a start end connected to an outlet of the intercooler, and an end of the third intake hose 6 connected to a throttle body (not shown).

  A radiator 7 and an air conditioner condenser 8 are arranged in front of the air cleaner 3 in the engine room 1 in front of and behind the air conditioner condenser 8. The radiator 7 displays only the heat exchange unit 7a, but naturally includes a fan shroud and an electric fan.

  Further, the heat exchange unit 7a has an upper tank and a lower tank, and the upper tank is attached to an upper and lower longitudinal radiator support 9 disposed above the lower tank, and the lower tank is attached to a lower radiator support (not shown). I have. The condenser 8 for the air conditioner is also mounted on the upper radiator support 9 and the lower radiator support. The upper radiator support 9 is in the form of a groove (U-shape) opened downward.

  A capacitor seal plate 10 that extends long in the left-right direction at a height overlapping the upper end of the air conditioner condenser 8 is disposed in front of the applicator support 9. The condenser seal plate 10 defines the upper end of the intake area in front of the air conditioner condenser 8, and the condenser seal plate 10 also defines the upper end of the suction area of the radiator 7 with the fan. In FIG. 1, reference numeral 11 denotes a cooling water feed pipe connected to the upper tank of the radiator 7.

  The capacitor seal plate 10 is an example of the front frame material described in the claims, and has a groove shape (U-shape) that opens downward, like the upper radiator support 9.

  As shown in FIG. 1, the intake duct 4 of the air cleaner 3 includes an elbow joint 4a having a right opening and connected to the upper surface of the front chamber 3c, and a base 4b connected to the elbow joint 4a and having an axis oriented in the left-right direction. And a forward facing portion 4c facing forward from the base portion 4b. The forward facing portion 4c is arranged so as to straddle the applicator support 9, and has a wide left and right width toward the near side.

  Further, the forward facing portion 4c of the intake duct 4 is generally inclined so as to shift rightward toward the front end in plan view. As shown in FIGS. 2 and 3, an intake port 4 d that opens downward toward the capacitor seal plate 10 is formed at the front end of the forward portion 4 c, while the intake port 4 d is formed in the condenser seal plate 10. Are opened. The intake hole 12 may be formed larger than the intake port 4d.

  A cover 13 is arranged on the upper surface of the condenser seal plate 10 to surround the intake port 4d of the intake duct 4 from both left and right sides and the near side. The cover 13 has a U-shape that is open downward except for a portion adjacent to the intake port 4d, and has a recess 13a so as to surround the intake port 4d in plan view. In other words, the intake port 4d enters the cover 13 from behind.

  A rearwardly facing bracket piece 14 is provided at a position near the left and right ends of the upper end portion of the cover 13, and the bracket piece 14 is fixed to the upper surface of the radiator support 9 by a bolt (screw) 15. However, the cover 13 may be fixed to the capacitor seal plate 10, or may be fixed to both the adapter support 9 and the capacitor seal plate 10.

  A cowl member 16 is disposed above the capacitor seal plate 10. Further, a front grille 17 having a ventilation space is disposed in front of the condenser seal plate 10.

  As shown by a dashed line in FIG. 2, the height of a hood (not shown) may be increased by disposing the upper frame 18 in the left and right directions above the radiator support 9. In other words, the height of the hood may increase due to the design or the like. In this case, the upper frame 18 is arranged to increase the upper end of the engine room 1.

  In the above configuration, the outside air passes through the air conditioner condenser 8 and the radiator 7 due to the running of the vehicle and the suction of the suction fan, whereby cooling of the air conditioner refrigerant and cooling of the engine cooling water are performed. On the other hand, outside air is sucked into the intake duct 4 from below the condenser seal plate 10 through the intake hole 12.

  The outside air that has passed through the air conditioner condenser 8 and the radiator 7 undergoes heat exchange to become hot air. The hot air impinges on the front surface of the engine 1 and changes its direction upward as indicated by the dotted line, and is guided by the hood to act as a guide. May wrap around in the foreground.

  If no countermeasures are taken, hot air may be sucked into the intake duct 4 and the filling efficiency may be reduced. In this embodiment, the intake port 4d of the intake duct 4 is covered by the cover 13 from above. Even if hot air flows around, it is not sucked into the intake port 4d, and only low-temperature outside air before being sucked into the air conditioner condenser 8 and the radiator 7 is sucked into the intake port 4d. Therefore, a decrease in the filling efficiency can be prevented.

  When the upper frame 18 does not exist, the height of the front grille 17 is substantially the same as the height of the radiator support 9, so that a seal plate that covers the intake port 4d of the intake duct 4 can be provided. By arranging the seal plate in this manner, hot air is prevented from entering the intake port 4d.

  However, if the upper frame 18 is present, the seal plate cannot be arranged due to interference with the front grille 17 and the like, and the above-described hot air intrusion phenomenon occurs. On the other hand, in the present embodiment, since the intrusion of hot air is prevented by the cover 13, the intrusion of hot air into the intake port 4d is prevented regardless of the presence or absence of the upper frame 18 and without providing a seal plate. it can. Therefore, it is possible to cope with both the case where the upper frame 18 exists and the case where it does not exist.

  The present invention can be embodied in various ways other than the illustrated embodiment. For example, the form of the air cleaner or the intake duct can be changed as appropriate. Also, the cover can be arbitrarily changed within a range having the function, for example, by covering the entire circumference of the intake port.

  In the embodiment, the adapter radiator support 9 and the capacitor seal plate 10 are separate members, but they may be integrated to form a capacitor seal plate portion by stepping down a portion corresponding to the air conditioner capacitor 8. It is possible. Further, the cover can be provided integrally with the intake duct.

  The present invention can be embodied in an intake air introduction device for a vehicle. Therefore, it can be used industrially.

DESCRIPTION OF SYMBOLS 1 Engine room 2 Engine 3 Air cleaner 3c Front room 4 Intake duct 4d Inlet 7 Radiator 7a Heat exchange unit 8 Condenser for air conditioner 9 Apparatus support 10 Condenser seal plate as an example of front frame material 12 Inlet hole 13 Cover 18 Upper frame

Claims (1)

At the front of the engine room provided at the front of the vehicle body, left and right longitudinal radiator supports to which the upper end of the radiator is attached are arranged, and the intake duct connected to the air cleaner straddles the radiator support. Are located,
An intake port of the intake duct opens downward toward a front frame member located in front of the apparatus support, while an intake hole located below the intake duct is opened in the front frame member. And
A cover is provided to prevent the hot air that has passed through the radiator from flowing upward and entering the intake port from above.
Vehicle air intake system.

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