JPS6120299Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the structure of an air cleaner used in an automobile engine.

This type of air cleaner has an air cleaner nose protruding from the main body for introducing air into the main body. This air cleaner nose has certain conditions such as securing the amount of intake air required by the engine and not reducing engine horsepower, appropriately preventing engine intake noise, and preventing water from being drawn into the air cleaner body from the outside. It is necessary to satisfy the following. In conventional air cleaners, these conditions have been met by ensuring the necessary cross-sectional area and appropriately lengthening the suction duct of the air cleaner nose. However, installing such a long air cleaner nose or intake duct in the narrow space of a car's engine compartment has many restrictions due to the relationship with other equipment, and in practice this can only be achieved within a limited range. However, the above-mentioned conditions could not be fully satisfied.

The purpose of this invention is to create an air cleaner for automobiles with an air cleaner nose that can be installed in a relatively narrow space and that can reduce intake noise and prevent water intake while ensuring the necessary cross-sectional area for engine intake. The goal is to provide the following.

Hereinafter, the present invention will be described in detail with reference to the drawings. In the figure, an air cleaner main body (case) 1 of an automobile engine is a vertical air cleaner having a substantially cylindrical shape and whose central axis is arranged substantially horizontally. A ring-shaped filter element 2 is disposed inside the air cleaner body 1. An air cleaner nose 3 having a shape as shown in the figure protrudes from the outer periphery of the air cleaner body 1. The air cleaner nose 3 includes an upper wall 4 extending horizontally in a substantially tangential direction from the upper peripheral wall of the air cleaner main body 1;
A front wall portion 7 extends toward the lower part of the peripheral wall of the air cleaner main body 1 so that the distance from the side wall portions 5, 6 and the upper wall 4 is gradually increased from approximately the tip portions of the upper wall 4.
An air chamber 8 is formed in the internal intake duct. Intake openings 9 and 10 for introducing air into the air chamber 8 from the outside are provided at two locations above and below, approximately at the tip of the air cleaner nose 3 and at a portion of the front wall 7 near the peripheral wall of the air cleaner main body. . The air entering from these intake openings 9 and 10 passes through the air chamber 8 and then flows through the opening 11 provided in the peripheral wall of the air cleaner main body 1 into the air cleaner main body 1.
flow inward.

The sum of the opening cross-sectional areas of the upper and lower intake openings 9 and 10 is:
To be large enough to take in a sufficient amount of intake air required by an engine so as not to reduce the horsepower and torque of the engine. In addition, the opening cross-sectional area of the main body opening 11 and the size of the air chamber 8 are determined by the upper and lower intake openings 9, 1.
It shall be larger than the sum of the opening cross-sectional areas of 0. With such a structure, the flow velocity of the air passing through the upper and lower intake openings 9 and 10 is reduced within the air chamber 8, so that engine intake noise can be suppressed, producing a muffling effect. Furthermore, since the upper intake opening 9 is smaller than the intake opening of a conventional air cleaner nose, water is less likely to be sucked in. If water is inhaled from the upper intake opening 9, the outer wall 12 of the air cleaner body 1 or the front wall 7 of the air cleaner nose 3
The water drops hit the lower intake opening 10 along the wall surface.
pulled out from the outside. In this way, in this invention, the intake openings 9 and 10 are provided at two locations, the upper and lower, so compared to conventional air cleaner noses, the length can be made shorter and simpler, and it can be used in the engine room of a car. It can be installed even in a narrow space.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the air cleaner of the present invention, Figure 2 is a perspective view of the air cleaner of the present invention;
The figure is a plan view thereof, and FIG. 3 is a longitudinal sectional view thereof. 1... Air cleaner body, 3... Air cleaner nose, 8... Air chamber, 9, 10... Intake opening.

Claims (1)

[Scope of utility model registration request] In order to introduce air into the generally cylindrical air cleaner body 1 whose central axis is arranged approximately horizontally and a ring-shaped air cleaner element is disposed inside, an air cleaner nose 3 is made to protrude outward from the air cleaner body. The air cleaner nose includes an upper wall 4 extending laterally from the upper part of the peripheral wall of the air cleaner body, and a front wall 7 extending toward the peripheral wall of the air cleaner body so that the distance from the approximate tip of the upper wall to the upper wall gradually increases. In order to form an air chamber 8 in the intake duct portion of the air cleaner nose, it is composed of the upper wall and side walls 5 and 6 on both sides of the front wall, and at least a portion of the front wall near the tip of the air cleaner nose and the peripheral wall of the air cleaner main body. At least 2 places above and below the
An automobile characterized in that intake openings 9 and 10 are provided to the air chamber, and the area of the opening 11 between the air chamber 8 and the air cleaner body is larger than the sum of the opening areas of the intake openings 9 and 10. Engine vertical air cleaner.