JPH01240323A - Suction system for vehicle - Google Patents

Abstract

PURPOSE:To make a bonnet low in height as well as to prevent concurrently water drops from coming in an air intake duct by letting the opening end side of the air intake duct penetrate through the front wall of an engine room, and thereby letting it be bent upward thereafter so as to let it be extended so that it is arranged close to and faced with the front end lower surface of the bonnet. CONSTITUTION:An intake duct 21 the base end section of which is connected with an air cleaner penetrates through a shroud panel 3 forming the front wall section of an engine room 2 while a projected part 21a at its tip end section is positioned at the front section of a car body 1, it is faced with the rear of a lamp unit thereafter. In addition, the air intake duct 21 is bent upward at the place of the projected part 21a while being extended so as to let a tip end opening section 21b be arranged close to and faced with the front end lower surface of a bonnet 6 covering the upper section of the engine room 2. In this case, a water proof plate 25 mounted between a shroud upper 24 and the lamp unit 22 is fixed onto a flange 23 projected onto the tip end opening section 21b if necessary, and a groove 26 in a recess form is formed on the upper surface of the water proof plate 25.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an intake system for a vehicle, and more particularly to an arrangement structure of an intake duct in the intake system for a vehicle.

(Prior Art) Generally, an intake duct with an air cleaner is installed in the engine room of an automobile to take in intake air to be supplied to the engine, but how should the intake duct be installed? This has become an important issue in improving engine performance and preventing water droplets from entering the intake duct. In particular, in order to cope with stricter inspection standards regarding water droplet intrusion into intake ducts, which have become remarkable in recent years, there is an urgent need to develop an appropriate intake duct structure.

What is important when considering the arrangement structure of such an intake duct is how to prevent water droplets from entering the opening of the intake duct, and there is little freedom in piping layout due to equipment placement in the engine room. That is the point. For example, if the opening of the intake duct is placed at a suitable location in the engine room, the structure is extremely good in terms of preventing water droplets from entering through the opening, and the piping layout is also good. Due to the high air temperature, the density of the intake air supplied to the engine decreases, which may lead to a decrease in engine performance. on the other hand,
When opening the intake duct to the outside of the engine room, piping must be routed while avoiding various equipment installed in the engine room, which limits the piping layout. It is conceivable to have a structure that protrudes from the side. As for such a structure, one in which the opening of the intake duct is made to protrude forward from the shroud panel that constitutes the front wall of the engine room has already been proposed (for example, Japanese Utility Model Application Publication No. 59-43213 reference).

(Problems to be Solved by the Invention) As described above, if the opening of the intake duct is structured to protrude to the front of the engine room, a decrease in intake air density can be prevented; Depending on the structure, the intake duct opening may be located at a low position, and there is a risk that water blown up along the shroud panel may splash onto the opening while the vehicle is running.

In addition, in recent years, the development of low-bonnet type vehicles in which the bonnet position is as low as possible has been progressing with the aim of reducing aerodynamic drag. If the opening of the intake duct is configured to protrude forward from the shroud panel, it is difficult to maintain the position of the opening at a predetermined height (i.e., at a height that can prevent water droplets from entering the opening). A problem arises.

The present invention has been made in view of the above points, and aims to prevent water droplets from entering the intake duct as much as possible while meeting the demand for a lower bonnet. be.

(Means for solving the problems) In the present invention, as means for solving the above problems,
In a vehicle in which a bonnet that covers the upper part of the engine room is provided on the upper edge of the opening of the vehicle body constituting the engine room, the opening end of the intake duct disposed in the engine room is located on the 3- side. , the air intake duct has an opening formed at the tip of the intake duct, and extends forward through a vehicle body component forming the front wall of the engine room, and extends upwardly from the projecting portion; It is closely opposed to the lower surface of the front end of the bonnet.

(Function) In the present invention, the following effects can be obtained by the above means.

That is, the opening end side of the intake duct is made to protrude forward through the vehicle body component constituting the front wall of the engine room, and is bent upward from the protruding portion, so that the tip opening thereof is By arranging the intake duct to face the lower surface of the front end of the bonnet, the position of the intake duct opening can be maintained high even in low-bonnet type cars, and water droplets can be prevented from entering the intake duct as much as possible. Not only can this be prevented, but the density of the intake air taken in through the intake duct can be maintained at a high level.

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 3 and 4, the front part of the vehicle body 1 of the automobile of this embodiment includes a front shroud panel 3, left and right wheel aprons 4, and a rear dash panel 5.
An engine room 2 is formed surrounded by the engine room 2, and a bonnet 6 that covers the upper part of the engine room 2 is provided at the upper edge of the opening of the engine room 2 so as to be openable and closable.

Inside the engine room 2, there are an engine 7, a transmission 8, an air cleaner 9, etc. located in the center, and a radiator 10, a condenser 11, a fan 12, etc. located in the front.
12, battery 13, relay box 14, canister 15, etc. located on the left side, radiator sub tank 16, washer tank 17, auto cruise auxiliary equipment 18, power steering oil tank 19, vacuum doubler located on the right side. A force device 20 and the like are arranged.

The air cleaner 9 and the engine 7 are connected by an intake pipe, and an air cleaner nose 9a provided on the inlet side of the air cleaner 9 is connected to an intake duct 21 for intake air intake.

The intake duct 21 connects the radiator 10 and the battery 13.
The opening end side of the shroud panel 3, which is a vehicle body structural member constituting the front wall of the engine room 2, is protruded forward through the gap between the shroud panel 3 and the front wall of the engine room 2. Then, the protruding portion 2 of the intake duct 21
1a faces the rear of a lamp unit 22 located in front of the side end of the shroud panel 3. Moreover, the intake duct 21 is bent and extended upward from the protruding portion 21a, and its tip opening 21b is closely opposed to the lower surface of the front end of the bonnet 6. By adopting such a piping layout for the intake duct 21, inside the engine room 2, the piping is used between the radiator 10 and the battery 13, which can be installed relatively easily, and outside the engine room 2. The piping utilizes the surplus space formed behind the lamp unit 22. Moreover, by making use of the extra space behind the lamp unit 22 and bending and extending the protruding portion 21a of the intake duct 21 upward, it is extremely useful when lowering the cowl and bonnet of a short-nose vehicle. This makes it possible to secure the layout space for the intake duct 21 outside the engine room 2, which has been difficult, and also makes it possible to maintain the position of the opening 21b of the intake duct 21 at a high position. The lamp unit 22 is configured by unitizing a headlight 22a, a small lamp 22b, and a direction indicating lamp 22c.

In this embodiment, as shown in FIGS. 1 and 2, a flange 23 is integrally provided at the opening 21b of the intake duct 21, and the shroud panel 3 A waterproof plate 25 is fixed between the shroud upper 24 and the lamp unit 22. The waterproof plate 25 has the function of preventing water that blows up along the vehicle body l (for example, the shroud panel 3) from scattering to the upper side of the intake duct opening 21b when the vehicle runs in a waterway. have. Therefore, if this waterproof plate 25 is provided,
The effect of preventing water droplets from entering the intake duct 21 becomes even more remarkable. Further, this waterproof plate 25 is connected to the shroud upper 23.
The lamp unit 22 is attached in such a way that the lamp unit 22 is connected to the lamp unit 22.

It also has the effect of reinforcing the situation. Furthermore, a series of grooves 26 are formed on the upper surface of the waterproof plate 25 to surround the front and left and right sides of the intake duct opening 21b. The groove 26 has a slightly downward slope toward both ends, and discharge holes 27 and 27 are formed at both ends to penetrate the lower surface of the waterproof plate 25. This groove 26 acts to collect water and discharge it from the discharge hole 27.27 to the lower part of the waterproof plate 25 when the water splashes to the upper surface of the waterproof plate 25, and the water to the intake duct opening 21b. This is to make prevention of intrusion more effective.

In the drawings, 28 is a wheel apron reinforcement, 29 is a bumper, 30 is a side frame, 31 is a cross member, and 32 is a cowl.

With the above configuration, in this embodiment,
This makes it possible to maintain a certain length of the intake duct 21 and maintain the position of the opening 21b high, so even when a short-nose car has a low cowl and bonnet, water blown up while driving on a waterway can be avoided. This effectively prevents the air from entering the intake duct 21. Moreover, the waterproof plate 25 provided at the intake duct opening 21b and the groove 26 formed on the upper surface of the waterproof plate 25
As a result, the waterproof effect is further enhanced. In addition, by making the open end side of the intake duct 21 protrude into the surplus space behind the lamp unit 22 and bending and extending it upward from there, the opening end side of the intake duct 21 does not take up any extra space in the longitudinal direction of the vehicle body. Intake duct 21
The piping layout can be secured, and in this respect, it can also be used when a short nose car is designed to have a low cowl and low bonnet. Furthermore, by arranging the intake duct opening 21b to face the outside of the engine room 2, the density of the intake air supplied to the engine 7 via the intake duct 21 is maintained high, thereby maintaining good engine performance. can.

It goes without saying that the present invention is not limited to the configuration of the above-described embodiments, and that the design can be changed as appropriate without departing from the gist of the invention.

(Effects of the Invention) As described above, according to the present invention, in a vehicle in which a bonnet that covers the upper part of the engine room is provided on the upper edge of an opening of the vehicle body constituting the engine room, the hood can be opened and closed. The opening end side of the intake duct disposed in the engine compartment is made to protrude forward through a vehicle body component constituting the front wall of the engine room, and to extend upwardly from the protrusion, and the intake duct Since the opening formed at the tip of the duct is closely opposed to the lower surface of the front end of the hood, the position of the opening at the tip of the intake duct can be maintained high even in a low-head type automobile. This has the excellent effect of not only being able to prevent water droplets from entering the intake duct as much as possible, but also being able to maintain a high density of the intake air taken in through the intake duct.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing essential parts of a vehicle intake system according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, and FIG. 3 is an intake system according to an embodiment of the present invention. FIG. 4 is a sectional view taken along IV--■ in FIG. 3. l...Car body 2...Engine room 3...Car body front wall (shroud panel) 6.
...Bonnet 21 ...Intake duct 21a ...Protrusion part 21b ...Opening

Claims (1)

[Claims] 1. In a vehicle in which a bonnet that covers the upper part of the engine room is provided on the upper edge of the opening of the vehicle body constituting the engine room, the opening end side of the intake duct disposed in the engine room is An opening formed at the tip of the intake duct projects forward through a vehicle body component that constitutes the front wall of the engine compartment, and extends upwardly from the projecting portion, and is formed at the tip of the intake duct.
An air intake device for a vehicle, characterized in that the air intake device is disposed close to and opposed to the lower surface of the front end of the bonnet.