JPS61143219A - Intaking device of engine in vehicle - Google Patents

Abstract

PURPOSE:To simplify the structure of an intaking device by providing air intaking passages of which the front and the rear end surfaces are open in the upper surfaces of fenders, and coupling them to an engine air cleaner in the intaking device for a vehicle, as stated in the title, having a pair of front wheels in the right and the left and fenders. CONSTITUTION:An air intaking passage 8 is provided in the inside of a front bonnet 5 across the bonnet 5, and it is integrally coupled to air intaking passages 9, 9 in the right and the left of front fenders 6l, 6r in the right and the left. Accordingly, accompanying with the running of a vehicle, air flows into the passages 9 from an air intaking port 10, and it is drawn in into the intaking passage 8 by means of the suction negative pressure of an engine. And the air enters into an air cleaner 14 through distributed passages 13, 13 to clean it, and further enters into the engine through an intake manifold 15 and a carburetor 16. Excessive air passes into an exit 11. By this constitution, it is possible to simplify the structure of an intaking device.

Description

Detailed Description of the Invention A0 Object of the Invention (1) Industrial Application Field The present invention relates to an intake system for an engine in a vehicle equipped with a pair of left and right front wheels and a front fender that covers the upper surfaces thereof. be.

(2) Prior Art Generally speaking, vehicles that are capable of traveling on rough terrain, wetlands, snowy areas, etc. are sometimes driven with most of their running wheels submerged in water. For this reason, in such vehicles, the air intake of the intake system of the running engine mounted on the vehicle body must be located at a higher position than the running wheels.
As disclosed in Japanese Patent No. 421, it is known that an air intake port for an engine intake system is provided directly below a passenger seat installed in the upper part of a vehicle body.

(3) Problems to be Solved by the Invention However, in the conventional device described above, there is a problem in that the position of the seat is raised because the air intake port is provided directly under the seat. If the sheet is made thinner, there is a problem in that its cushioning properties deteriorate. Furthermore, below the seats are the carburetor for the intake system of the driving engine, an air cleaner, a damper for the rear wheel suspension,
Another problem is that because auxiliary equipment such as batteries are crowded together, there is not enough space to provide an air intake for the intake system directly below the seat.

In addition, with the conventional system, mud, dust, snow, etc. that are kicked up when the vehicle is running enter the intake system along with the intake air, causing early clogging of the air cleaner element in the intake system, which requires replacement and cleaning of the cleaner element. There was also the problem that the frequency of doing this increased.

The present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to provide an intake system for an engine in a vehicle that has a simple configuration and can solve all of the above-mentioned problems.

B1 Structure of the Invention (1) Means for Solving the Problems According to the present invention, in order to achieve the above-mentioned object, a pair of left and right wheels are provided on both sides of the front of the vehicle body on which the driving engine is mounted.

In a vehicle in which a right front wheel is suspended and left and right front fenders are disposed above the front wheels to cover the upper surface of the front wheel, the front and rear end surfaces are open on the upper surface of at least one of the left and right front fenders. An air intake passage is provided, and an air suction port is opened on an inner wall surface of the air intake passage, and the air suction port is communicated with an air cleaner connected to an intake pipe of the engine.

(2) Effect According to the above configuration, particulate matter such as mud, dust, snow, etc. that enters the air guide with the traveling wind when the vehicle is running passes through the air intake passage due to its inertia and is released into the outside air again. Only outside air is drawn into the engine's intake system through the air intake port without being drawn into the intake system.

(3) Embodiments Hereinafter, embodiments in which the present invention is applied to a four-wheel saddle type vehicle will be described with reference to the drawings.

In Figures 1 to 3, a buff unit P including an engine E is mounted in the center of the four-wheel saddle type vehicle, and the vehicle body 1
A pair of steerable front wheels Ff, Wf are suspended on the front left and right sides of the vehicle, and a pair of rear wheels Fr, Fr are suspended on the rear left and right sides of the vehicle. Before each pair.

The rear wheels Ff, Ff, Fr, Fr are each equipped with wide extremely low pressure tires 2. On the vehicle body 1 is an air cleaner cover 3, and further behind it is a passenger seat 4.
will be placed. A bonnet 5 that covers the upper surface of the vehicle body 1 is disposed at the front, right and left center of the vehicle body 1, and left and right front fenders 61 that cover the upper surfaces of the left and right front wheels Wf and If are provided on the left and right sides of the bonnet 5, respectively. , 6r is the vehicle body 1
is fixed to. Further, left and right rear fenders 71 and 7r are fixed to the rear left and right sides of the vehicle body 1 to cover the upper surfaces of the left and right rear wheels Fr and Fr on both sides of the seat 40, respectively.

Next, the intake system In connected to the engine will be explained.

At the front of the vehicle body 1, inside the bonnet 5,
An air suction passage 8 is provided across the bonnet 5. Both left and right ends of this air suction passage 8 reach above the left and right front fenders 6f and 6r, and left and right air intake passages 9.9 are integrally formed at both ends, respectively.

Each air intake passage 9 is formed into a rectangular tube shape along the longitudinal direction of the vehicle body 10, and has an inlet 10 and an outlet 1 facing each other on its front and rear end surfaces.
1 are opened respectively. Further, an air suction port 12 is opened on the inner wall surface of each air intake passage 9 so as to be substantially perpendicular to the flow of air flowing through the passage 9, and this air suction port 12 is communicated with the air suction passage 8.

Two air distribution passages 13 are provided in the middle of the air suction passage 8.
．． 13 extend substantially parallel toward the rear of the vehicle body 1, and the rear ends of these air distribution passages 13 and 13 communicate with the inlet of an air cleaner 14 disposed on the engine. An intake pipe 15 is communicated with an outlet of the air cleaner 14. The intake pipe 15 extends rearward and downward under the air cleaner cover 3 and the seats 4, is bent forward, and is connected to an intake port of the engine E via a carburetor 16.

An exhaust pipe 17 is connected to an exhaust port on the front surface of the engine E, and the exhaust pipe 17 descends in front of the engine E, extends rearward, and is connected to an exhaust muffler (not shown).

Next, the operation of the embodiment of the present invention will be explained.

When the vehicle is running now, the wind flows along the upper surfaces of the left and right front fenders 5Z and 5r, and a portion of the wind flows into the left and right air intake passages 9, 9.

The intake negative pressure of the engine E is determined by the left and right air intake passages 9.
The outside air flowing through the interior of the air suction passage 8 is drawn into the air suction passage 8 and guided from the passage 8 into the air cleaner 14 via the distribution passage 13. 16, where an air-fuel mixture is produced which is drawn into the intake port of engine E.

By the way, when a vehicle drives on rough ground, wetland, snowy ground, etc.
Particulate matter such as mud, dust, spray, and snow mixed in with the wind when traveling enters the air intake passages 9, 9, but since these particulate matters have a higher specific gravity than air, their inertia causes them to move left and right. The air passes through the air intake passage 9°9 with great force and is emitted to the rear thereof, and is hardly sucked into the air suction passage 8. Therefore, outside air containing almost no particulate matter is sucked into the air cleaner 14, purified in the air cleaner 14, and then sucked into the engine E via the carburetor 16.

In the above embodiment, the air intake passage 9 is located on the left side.

Although the case where the air intake passage 9 is provided on the right front fenders 51 and 6r has been described, the air intake passage 9 is provided on the left and right front fenders 6r.
It may be provided on one side of 1.6r.

Effects of C0 Invention As is clear from the above examples, according to the present invention,
An air intake passage with open front and rear ends is provided on the top surface of the front fender, an air suction port is opened on the inner wall of the air intake passage, and this air suction port is connected to an air cleaner connected to the engine intake pipe. Therefore, the driving wind is guided by the unobstructed front fender and enters the air intake passage with little resistance, where it separates particulate matter such as mud, dust, and snow, which has a specific gravity higher than that of air, and removes the particulate matter. It is possible to introduce outside air containing almost no particulate matter into the air cleaner, thereby reducing contamination of the air cleaner by the particulate matter, and cleaning the air cleaner.
The frequency of replacement can be reduced.

In addition, unlike the conventional system described above, there is no need to provide an air intake passage under the seat, so the position of the seat does not become high, which may make the cushion layer of the seat thin and make the ride uncomfortable. Not at all.

[Brief explanation of drawings]

The drawings show one embodiment of the device of the present invention, and FIG.
FIG. 2 is a side view of the essential parts, FIG. 2 is a plan view thereof, and FIG. 3 is a perspective view of a straddle-type vehicle equipped with the device of the present invention. E...Engine, Wf...Front wheel 1...Vehicle body, 61, 6γ...Left, right front fender, 9...Left air intake passage, 12...Air suction port, 14... ...Air cleaner, 15...Intake pipe patent applicant Honda Motor Co., Ltd. Procedural Amendment (Return March 2, 1985) 3rd, 1, Indication of Case 1988 Patent Application No. 263666 3, Amendment Name of patent applicant (532) Honda Motor Co., Ltd. 4, representative
Person 〒105 5 Date of amendment order March 6, 1985 (Date of dispatch: March 26, 1985)
6. Subject of correction

Claims (1)

[Claims] A vehicle in which a pair of left and right front wheels are suspended on both sides of the front of a vehicle body equipped with a driving engine, and left and right front fenders are disposed above the front wheels to cover the upper surfaces of the front wheels. An air intake passage with open front and rear end surfaces is provided on the upper surface of at least one of the left and right front fenders,
An air intake device for an engine in a vehicle, characterized in that an air suction port is opened in an inner wall surface of the air intake passage, and the air suction port is communicated with an air cleaner connected to an intake pipe of the engine.