JP2006046215A - Intake system structure for engine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent fresh air in an intake duct from being heated by hot air passing through a radiator by preventing water or the like from being sucked from an opening part of the intake duct as much as possible. <P>SOLUTION: In the intake system structure for the engine having a front compartment formed in front of a dash panel of a vehicle, having an engine compartment formed in a lower part of a seat in rear of the dash panel, having a radiator arranged in the front compartment, having an engine arranged in the engine compartment, and having an intake duct connected to the engine arranged between the front compartment and the engine compartment, the radiator is provided in front of the front compartment and the opening part of the intake duct is provided on an upper surface of a vehicle body frame above the radiator and the intake duct is extended upward along an outside of a fan shroud of the radiator. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an intake system structure of an engine, and in particular, can prevent water and the like from being sucked from an opening of an intake duct as much as possible, and the outside air in the intake duct is warmed by hot air that has passed through a radiator. The present invention relates to an intake system structure of an engine that can prevent this.

  In some vehicles, a front room is formed in front of the dash panel, an engine room is formed below the seat behind the dash panel, a radiator is arranged in the front room, and an engine is arranged in the engine room. In this engine intake system structure, an intake duct connected to an air cleaner of the engine is disposed between the front room and the engine room.

In such an intake system structure of an engine, an intake duct connected to an air cleaner of an engine mounted in an engine room below the seat is provided, and an opening of the intake duct is opened in an engine room formed below the seat. It is common to make it.
JP 2002-98016 A

  By the way, when the opening portion of the intake duct is disposed in the engine room below the seat as in Patent Document 1, the engine room is in a low position below the seat, so that it is easy to suck water or the like from the opening portion. There is.

  On the other hand, some vehicles have a front room in which a radiator or the like is disposed in front of a dash panel in front of a seat. Since this front room has a higher position than the engine room under the seat, if this front room is used, the opening of the intake duct can be arranged at a higher position than the engine room under the seat. it can.

  However, in this case, it is necessary to extend the intake duct between the front room in front of the dash panel and the engine room below the seat, and there is a disadvantage that the intake duct becomes long and difficult to handle. If a radiator is installed in the front room, be careful not to be affected by hot air because the outside air in the intake duct introduced from the opening may be warmed by the hot air that has passed through the radiator. Need to be installed.

  The present invention forms a front room in front of a dash panel of a vehicle, forms an engine room below a seat behind the dash panel, arranges a radiator in the front room and arranges an engine in the engine room, In an intake system structure of an engine in which an intake duct connected to the engine is disposed between the front room and the engine room, the radiator is disposed in front of the front room, and a vehicle body frame above the radiator is provided. An opening of the intake duct is disposed on the upper surface, and the intake duct extends downward along the outside of the fan shroud of the radiator.

  In the engine intake system structure according to the present invention, a radiator is provided in front of a front room in front of a dash panel of a vehicle, and an opening of an intake duct is provided on an upper surface of a vehicle body frame above the radiator. The opening of the duct can be arranged as high as possible in the vehicle body to prevent the intake of water from the opening as much as possible, and the intake duct can be connected to the radiator fan shroud from the opening. By extending downward along the outside, it is possible to prevent the outside air in the intake duct taken from the opening from being heated by the hot air that has passed through the radiator.

The intake system structure for an engine according to the present invention has an intake duct opening disposed on the upper surface of a vehicle body frame in a front room of the vehicle to prevent water from being sucked through the opening as much as possible. Extending the intake duct downward along the outside of the fan shroud of the radiator arranged in the front of the room to prevent the outside air in the intake duct taken in from the opening from being heated by hot air that has passed through the radiator Yes.
Embodiments of the present invention will be described below with reference to the drawings.

  1 to 3 show an embodiment of the present invention. In the figure, 2 is a vehicle, 4R is a right side frame extending in the front-rear direction on the right side of the vehicle, 4L is a left side frame extending in the front-rear direction on the left side of the vehicle, 6 is an upper body frame, 8 is a lower body frame, 10 is A dash panel, 12 is an engine room panel, 14 is a right tension rod bracket, and 16 is a stabilizer bar.

  The vehicle 2 is provided with a right tension rod bracket 14 for attaching a right tension rod (not shown) on the front side of the engine room panel 12 of the right side frame 4R, and a left tension for attaching a left tension rod (not shown) on the front side of the engine room panel 12 of the left side frame 4L. A rod bracket is provided, and both ends of the stabilizer bar 16 are fixed to the right tension rod bracket 14 and the left tension rod bracket.

  This vehicle 2 is in front of the dash panel 10 and forms a front room 18 between the dash panel 10 and the upper and lower body frames 6 and 8, and a rear seat (not shown) of the dash panel 6. The engine room 20 is formed by the engine room panel 12 below. A vehicle compartment 22 is formed on a floor panel (not shown) between the front room 18 and the engine room 20.

  In the vehicle 2, a radiator 24 is disposed in the front room 18, and an engine 26 is disposed in the engine room 20. The radiator 24 includes an upper tank 28, a lower tank 30, and a core 32, and a water injection port 34 is provided in the upper tank 28. In the radiator 24, a fan shroud 36 is provided on the rear side of the core 32, and a fan motor 38 is attached to the fan shroud 36. The fan motor 38 rotates the fan 40 and allows the cooling air to pass through the core 32.

  The radiator 24 elastically supports the upper side mounting portion 42 of the upper tank 28 on the rear side of the upper body frame 6 via an upper side mount (not shown), and the lower side mounting portion 44 of the lower tank 30 is mounted on the lower side. It is elastically supported on the rear side of the lower body frame 8 via (not shown). Thus, the radiator 24 is disposed on the front surface of the front room 18.

  In the radiator 24, the water inlet 34 of the upper tank 28 is connected to a reservoir tank 48 by an overflow pipe 46. The reservoir tank 48 is arranged to be biased to the front side of the dash panel 10 and to the right side of the front room 18. Further, the radiator 24 is connected to the engine 26 by a radiator outlet hose and a radiator inlet hose (not shown). A condenser 50 of an air conditioner (not shown) is disposed in front of the radiator 24 so as to overlap the radiator 24.

  In the engine 26, an air cleaner 52 constituting an intake system is disposed in the engine room 20. The air cleaner 52 includes an intake inlet portion 54 and an outlet portion 56, and an intake duct 58 connected to the inlet portion 54 is disposed between the front room 18 and the engine room 20 and is connected to the outlet portion 56. A suction duct (not shown) is connected to the engine 26 through a throttle body and an intake manifold.

  The intake duct 58 is provided with a laterally long opening 60 having a width wider than the height at one end side, and an introduction part 62 that is continuous with the opening 60 and gradually extends to the vicinity of the dash panel 10. One side in the width direction (the right side of the vehicle 2 in FIG. 1) of the introduction part 62 where the 48 is disposed is recessed to provide a notch part 64, and an attachment part 66 is provided on each of the left and right sides of the opening part 60. The intake duct 58 is disposed on the upper surface of the upper body frame 6 such that the opening 60 is biased toward the side close to the right side frame 4R so that the rear end of the introduction portion 62 reaches the vicinity of the dash panel 10. 66 is attached to the upper body frame 6, and a reservoir tank 48 connected to the radiator 24 is disposed on the right side of the notch 64.

  The air intake duct 58 extends from the rear end of the introduction portion 62 downward along the outer side of the fan shroud 36 of the radiator 24 (the right side of the vehicle 2 in FIG. 1), and then bent backward to form a floor panel (not shown). The lower side of the stabilizer bar 16 is extended rearward along the right side frame 4R, and the upper side of the engine room panel 12 is bent upward after diving, and the interior of the engine room 20 is extended upward. The other end side is connected to the inlet 54 of the air cleaner 52.

  The intake duct 58 is provided with a front bracket 68 at a portion extending downward along the outside of the fan shroud 36 and an intermediate bracket 70 at a portion extending rearward along the right side frame 4R. A rear bracket 72 is provided at a position immediately before diving underneath. The front bracket 68 is fixed to a vehicle body panel (not shown) in front of the dash panel 10. The intermediate bracket 70 and the rear bracket 72 are fixed to a floor panel (not shown).

  Next, the operation will be described.

  The intake system structure of the engine 2 takes outside air from an opening 60 of an intake duct 58 disposed on the upper surface of the upper body frame 6 of the front room 18 and guides it downward along the outside of the fan shroud 36 by the intake duct 58. Then, dive under the dash panel 10, guide the lower side of the floor panel (not shown) rearward along the right side frame 10, dive under the engine room panel 12, and then introduce it into the upper air cleaner 52. The outside air from which dust has been removed by the air cleaner 52 is supplied to the engine 26 from a suction duct (not shown) via a throttle body and an intake manifold.

  On the other hand, the radiator 24 rotates the fan 40 by the fan motor 38 to allow cooling air to pass through the core 32, thereby cooling the cooling water of the engine 26. The air that has been warmed through the core 32 is guided inside the fan shroud 36 toward the rear dash panel 10 and is discharged to the outside.

  In the intake system structure of the engine 26, an opening 60 of the intake duct 58 is arranged at a position as high as possible in the front room 18 so as to be biased toward the right side frame 4R, and the intake duct continuous to the opening 60 is provided. When extending 58 up and down and front and rear, the intake duct 58 extends downward along the outside of the fan shroud 36 and extends rearward along the right side frame 4R.

  As described above, in the intake system structure of the engine 26, the radiator 24 is disposed on the front surface of the front room 18, and the opening 60 of the intake duct 58 is disposed on the upper surface of the upper body frame 6 above the radiator 24. Accordingly, the opening 60 of the intake duct 58 can be disposed as high as possible on the vehicle body, and it is possible to prevent water and the like from being sucked from the opening 60 as much as possible.

  In addition, the intake system structure of the engine 26 is such that the intake duct 58 extends downward from the opening 60 along the outside of the fan shroud 36 of the radiator 24, so that the hot air that has passed through the radiator 24 allows the intake air to flow from the opening 60. It is possible to prevent the outside air in the intake duct 58 taken in from being warmed.

  Further, in the intake system structure of the engine 26, the opening 60 is disposed so as to be biased toward the right side frame 4R side of the front room 18, and the intake duct 58 is rearward along the right side frame 4R extending in the front-rear direction of the vehicle 2. Thus, the intake duct 58 can be shortened and the intake duct 58 can be easily routed.

  Furthermore, in the intake system structure of the engine 26, the intake duct 58 extending downward from the opening 60 is fixed to the vehicle body panel in front of the dash panel 6, so that the intake duct 58 extending downward is idle. Can be prevented.

  In addition, the intake system structure of the engine 26 is provided with an introduction portion 62 that extends to the vicinity of the dash panel 10 in the opening 60, and the intake duct 58 extends downward from the rear end of the introduction portion 62 to make the intake duct 58 a radiator. The air intake duct 58 that extends in the vertical direction without interfering with a pipe (a condenser cooling pipe) (not shown) on the side of the condenser 50 that is disposed in front of the radiator 24 by being separated from the radiator 24. The front bracket 68 for fixing the intake duct 58 can be formed compactly.

  Further, the intake system structure of the engine 26 is provided with a notch portion 64 in the introduction portion 62 and a reserve tank 48 connected to the radiator 24 at a position close to the notch portion 64, so that the introduction portion 62 and the reserve are arranged. Interference with the tank 48 can be avoided, and the introduction portion 62 can be formed in the opening 60 of the intake duct 58 without changing the mounting position of the reserve tank 48.

  The present invention is not limited to the above-described embodiments, and various application modifications can be made.

  FIG. 4 shows a first modification. The intake system structure of the engine 26 is shielded between an intake duct 58 extending downward along the outside of the fan shroud 36 from the rear end of the introduction portion 62 provided in the opening 60 and the fan shroud 36. A hot plate 74 is provided.

  The intake system structure of the engine 26 can prevent the hot air that has passed through the radiator 24 from flowing around the intake duct 58 that extends downward along the outside of the fan shroud 36 by the company heat plate 74. It is possible to prevent the outside air in the intake duct 58 taken from the opening 60 from being warmed.

  FIG. 5 shows a second modification. The intake system structure of the engine 26 is biased so as to be positioned above the right side frame 4R, the opening 60 of the intake duct 58 is disposed on the upper surface of the upper body frame 6, and the fan shroud 36 of the radiator 24 is disposed. The other side in the width direction of the introduction portion 62 (the left side of the vehicle 2 in FIG. 1) is recessed to provide a notch 64, and a reservoir tank 48 connected to the radiator 24 is disposed on the left side of the notch 64. is there.

  In the intake system structure of the engine 26, the opening 60 of the intake duct 58 is biased so as to be positioned above the right side frame 4R and disposed on the upper surface of the upper body frame 6, so that the opening 60 can be made as much as possible of the vehicle body. It can be disposed at a high position and away from the radiator 24, and it is possible to prevent as much as possible from sucking water or the like from the opening 60, and to remove the air heated by the radiator 24. Suction can be prevented, and the reservoir 24 is provided in the notch 64 provided on the other side in the width direction of the introduction portion 62, thereby avoiding interference between the introduction portion 62 and the reserve tank 48 and the radiator 24. The reserve tank 24 using a space surrounded by the rear side of the core 32, the upper right side of the cylindrical fan shroud 36 and the front side of the dash panel 10. It can be arranged.

  An intake system structure for an engine according to the present invention has an intake duct opening disposed on the upper surface of a vehicle body frame in a front room of a vehicle to prevent water from being sucked through the opening as much as possible. Extending the intake duct downward along the outside of the fan shroud of the radiator arranged in the front of the room to prevent the outside air inside the intake duct taken in by the hot air passing through the radiator from being warmed Therefore, the engine parts can be appropriately arranged using the space effectively.

It is a top view of the intake system structure of the engine which shows an Example. It is a side view of the intake system structure of the engine by the arrow II of FIG. It is a front view of the intake system structure of an engine. It is a principal part top view of the intake system structure of the engine which shows a 1st modification. It is a principal part top view of the intake system structure of the engine which shows a 2nd modification.

Explanation of symbols

2 Vehicle 4R Right side frame 4L Right side frame 6 Upper body frame 8 Lower body frame 10 Dash panel 12 Engine room panel 18 Front room 20 Engine room 22 Car compartment 24 Radiator 36 Fan shroud 48 Server tank 50 Condenser 52 Air cleaner 58 Air intake duct 60 Opening portion 62 Introduction portion 64 Notch portion 66 Mounting portion 68 Front bracket 70 Intermediate bracket 72 Rear bracket

Claims (5)

A front room is formed in front of a dash panel of the vehicle, an engine room is formed below a seat behind the dash panel, a radiator is arranged in the front room, an engine is arranged in the engine room, and the engine is connected to the engine room. In the engine intake system structure in which the intake duct to be disposed is disposed between the front room and the engine room, the radiator is disposed on the front surface of the front room, and the intake air is disposed on the upper surface of the vehicle body frame above the radiator. An intake system structure for an engine, wherein an opening of a duct is provided, and the intake duct extends downward along the outside of a fan shroud of the radiator. 2. The engine according to claim 1, wherein the opening is disposed to be biased toward the side frame, and the intake duct extends rearward along the side frame extending in the front-rear direction of the vehicle. Intake system structure. 2. The intake system structure for an engine according to claim 1, wherein an intake duct extending downward from the opening is fixed to a vehicle body panel in front of the dash panel. 2. The opening portion is provided with an introduction portion extending to the vicinity of the dash panel, and the intake duct is extended downward from a rear end of the introduction portion so that the intake duct is separated from the radiator. The intake system structure of the engine described in 1. The intake system structure for an engine according to claim 4, wherein a notch portion is provided in the introduction portion, and a reserve tank connected to the radiator is disposed in the notch portion.

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