JPH04103869A - Air cleaner device for internal combustion engine - Google Patents

Abstract

PURPOSE:To make a purifying device small in size as well as to make dust collecting capacity variable by providing a device with a cylindrical section the both ends of which are connected to an air suction port and an internal combustion engine, a filter section composed of linear elements, and with an actuator twisting the cylindrical section. CONSTITUTION:When an actuator 8 is turned on with an actuating switch actuated, a plunger is advanced, so that an engaging section 3 is thereby pressed down. This thereby causes a cylindrical section 2 composed of rubber-like elastic material is twisted toward the engaging section 3 side from a stationary end 2a. Owing to twisting, for example, a linear element 6 at the stationary end 2a is not tilted at all as shown in a cross-section (a), the linear element 6 at the position of the engaging section 3 is however tilted the most as shown in a cross section (d). In the intermediate section between both of the above said positions, the element is much more gradually tilted at cross sections (b) and (c) in order as it is parted from the stationary end 2a. This thereby causes the respective elements 6 to be conditioned into a mutually intersected one when viewed in the longer direction of the cylindrical section 2, thereby making the air penetration of an intake air passage 4 small.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an air cleaner device for an internal combustion engine installed in an intake system of an internal combustion engine such as a vehicle.

<Prior Art> Conventionally, the intake system of an internal combustion engine is equipped with an air cleaner device for removing dust from the air sucked into the cylinder.

FIG. 7 is a sectional view showing an example of such an air cleaner device. This air cleaner device 5o includes a cleaner element 51, a cover 53. Case 5 consisting of body 55
2. The cleaner element 51 is generally formed of a filter material made of non-woven fabric or the like into an annular body with a large number of pleats, and is configured to collect dust in the air passing from the air inlet 54 to the air outlet 56. .

As shown in FIG. 8, in the air cleaner device 50, an air inlet 53 is connected to an air suction port 61, and an air outlet 55 is connected to an intake duct 62. It was connected to an intake manifold 64 of an internal combustion engine 65 via a resonator 63 and the like.

<Problems to be Solved by the Invention> However, such an air cleaner device with a conventional configuration requires a large case to house the cleaner element, and a thick case to connect the air cleaner and the engine. The problem was that it required a hose.

Furthermore, since the single-layer element made of nonwoven fabric or the like has a large intake resistance per unit area, it is necessary to increase the total area of the cleaner element.

Further, there is a problem in that the cleaner element needs to be made larger in order to be used in dusty places such as rough terrain or desert areas.

Therefore, due to the large air cleaner case and thick intake duct, there is a problem in that the ease of mounting in the engine room is reduced.

This invention was made in order to solve the above problems, and its purpose is to provide an air cleaner for internal combustion engines that can make the intake air purifying device compact and can vary the dust collection ability. The aim is to provide equipment.

<Means for Solving the Problems> The present invention has been made to achieve the above object, and is made of a rubber-like elastic material, has an intake passage formed inside, and has both ends connected to an air intake port and an internal combustion engine. a filtration section consisting of a large number of linear elements arranged parallel to each other in a forest shape in the length direction and traversing the intake passage in parallel in the diametrical direction; This is an air cleaner device for an internal combustion engine, characterized in that it is equipped with an actuator that applies twist to a portion of the air cleaner.

<Function> The present invention is constructed as described above, and a large number of linear elements form a filtration section that is always arranged parallel to each other in the intake passage, and collects dust in the air passing through. do.

When the cylindrical part is twisted by the operation of the actuator, each linear element gradually inclines and crosses from one end of the intake passage to the other, forming a zigzag air passage in the filtration part and removing dust. Increases collection capacity.

<Example> An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing the overall structure of an air cleaner device for an internal combustion engine according to the present invention, and FIG. 2 is a cutaway perspective view showing the main parts.

In the figure, reference numeral 1 indicates an air cleaner device for an internal combustion engine.
It is mainly composed of a filter section 5 made up of a large number of linear elements 6 arranged in a forest shape in the intake passage 4, and an actuator 8 that applies twist to the cylindrical section 2.

In the embodiment, the cylindrical portion 2 is made of a material having rubber-like elasticity such as EPDM, and is formed in the shape of a cylindrical hose. At a predetermined position on the outer periphery of the cylindrical part 2, an engaging part 3 that can be engaged with the actuator 8 is protruded. A filter section 5 is provided.

The filtration section 5 is constituted by a large number of linear elements 6 that are arranged parallel to each other in the diametrical direction of the intake passage 4 and arranged in parallel in the longitudinal direction of the intake passage 4 in a forest shape.

In the embodiment, the linear elements 6 are made of a synthetic resin material such as ABS resin, and a large number of linear elements 6 are grouped together as an element structure 7 for each plane that traverses the intake passage 4 . As shown in FIG. 3, this element structure 7 has a large number of linear elements 6 arranged in parallel at predetermined intervals, and an end of each linear element 6 is integrally formed with an annular portion 7a. . In addition, 7b is a positioning groove of the element structure 7, and is formed so as to engage with the positioning protrusion 2b provided on the inner wall of the cylindrical part 2 in the length direction.

A large number of element structures 7 are arranged in parallel in the longitudinal direction of the intake passage 4, and the outer periphery of the annular portion 7a of each element structure 7 is elastically crimped and fixed by the inner wall of the cylindrical portion 2, and both ends The element structure 7 of the section is fixed to the cylindrical section 2.

The actuator 8 is composed of an electromagnet having a plunger 8a, and is attached to the vehicle body 10 by a mounting member 9, and the tip of the plunger 8a is engaged with the engagement portion 3 of the cylindrical portion 2. Then, by pushing out the plunger 8a,
The engaging portion 3 is configured to be pushed down and twist the cylindrical portion 2. Note that the actuator 8 is connected to a power supply section via an operation switch (not shown).

Next, the operation of the air cleaner device for an internal combustion engine configured as described above will be explained.

First, in the air cleaner device 1, the fixed end 2a of the cylindrical portion 2 at a position far from the engaging portion 3 is connected to the air suction port 11. This air intake port 11 has a base end 11a side facing the vehicle body 1o.
The cylindrical part 2 is fixed to the base end 11a of the cylindrical part 2.
The fixed end 2a of is connected. In addition, the other end side of the cylindrical portion 2 (
The side (closer to the engaging portion 3 ) is connected to the intake manifold of the internal combustion engine via the connecting duct 12 . In addition,
The connection duct 12 is formed in a bellows shape from a rubber-like elastic material, and is formed to be movable as the cylindrical portion 2 is twisted.

When the actuator 8 is off, the tip of the plunger 8a moves back and engages with the engaging portion 3. In this state, the cylindrical portion 2 is in an untwisted state. As shown in FIG. 4, each linear element 6 of the filtration part 5 is in a parallel state from the fixed end 2a to the engaging part 3 side when looking at the length direction of the cylindrical part 2, and the linear elements 6 of the filtration part 5 are in a parallel state from the fixed end 2a to the engaging part 3 side. The pass rate will be the highest. Therefore, the intake resistance of the engine is small and the ability to collect dust is relatively low, making it suitable for high-speed operation of the engine on paved roads.

When the actuator 8 is turned on by operating the operation switch, the plunger 8a moves forward and presses the engaging portion 3 downward, as shown in FIG. As a result, the cylindrical portion 2 made of a rubber-like elastic material is twisted from the fixed end 2a toward the engaging portion 3 side. FIG. 6 shows the inclination of each linear element 6 of the filter section 5 in a twisted state. By this twisting, for example, the linear element 6 at the fixed end 2a
does not tilt as shown in cross section a, and the linear element 6 at the engagement portion 3 position tilts the most as shown in cross section d. At an intermediate position between the two, the inclination becomes sequentially larger as shown in the cross sections C and C as the distance from the fixed end 2a increases. Therefore, each of the linear elements 6 crosses each other when viewed in the longitudinal direction of the cylindrical portion 2, and the air passage rate of the intake passage 4 becomes small.

In the embodiment, by tilting the linear element 6 at the engagement portion 3 position by 20 to 30 degrees, the air passage rate is increased to approximately 30 degrees.
% smaller, the dust collection ability is improved,
The condition is suitable for engine operation on rough terrain, desert areas, etc.

When the actuator 8 is turned off, the plunger 8a retreats, and accordingly the cylindrical part 2 moves back in the direction of eliminating twisting due to its own elasticity, and each linear element 6 moves the length of the cylindrical part 2. Return to a parallel position when looking in the horizontal direction.

Note that the present invention is not limited to the above explanation and troubles, and the embodiments thereof can be changed without departing from the technical idea of the present invention. for example,
The linear element may be a wire made of fluff, or may be formed into a net shape.

Further, the actuator may be a motor, a cylinder, or the like, and may be connected to the cylindrical portion via a gear or a link mechanism.

Furthermore, the air cleaner device of the present invention may be used in combination with a conventional air cleaner device, in which case the conventional air cleaner device can be downsized and its dust collection ability can be made variable.

<Effects of the Invention> As explained above, the air cleaner device for an internal combustion engine of the present invention is made of a rubber-like elastic material, has an intake passage formed inside, and has a cylinder whose both ends are connected to an air intake port and an internal combustion engine. a filtration part consisting of a large number of linear elements arranged parallel to each other in a forest shape in the length direction and traversing the intake passage in parallel in the diameter direction; and an actuator for twisting the cylindrical part. , so dust can be collected within the suction duct-like cylindrical part that introduces air into the internal combustion engine, and unlike conventional large cases to accommodate air cleaner elements and The air cleaner device can be constructed in a compact size without requiring a thick hose for connection.

Therefore, the ease of mounting the air cleaner device in the engine room can be greatly improved.

Further, the linear elements constituting the filtration section are sequentially tilted in accordance with the twisting of the cylindrical section, so that the dust collection ability can be varied, so that the dust collection ability can be easily adjusted depending on the operating environment.

As described above, the air cleaner device of the present invention provides effects such as being able to perform dust collection suitable for the operating environment and optimal engine operation.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the overall configuration of an air cleaner device for an internal combustion engine according to an embodiment of the present invention, Fig. 2 is a cutaway perspective view showing the main parts thereof, and Fig. 3 is a sectional view showing an example of the formation of a filter section. , FIG. 4 is a cross-sectional view showing a linear element in a normal state, FIG. 7 is a longitudinal cross-sectional view of a conventional air cleaner device, and FIG. 8 is a perspective view showing a state in which the conventional air cleaner device is mounted on a vehicle. DESCRIPTION OF SYMBOLS 1... Air cleaner device, 2... Cylindrical part, 3... Engaging part, 4... Intake path, 5... Filtration part, 6... Linear element, 8... Actuator . Patent application Jin-Aisan Kogyo Co., Ltd. Toyota Motor Corporation Figure 5 is a sectional view showing the linear element when torsion is applied. Figure 6 is an explanatory diagram showing the inclined state of the linear element.

Claims (1)

[Scope of Claims] A cylindrical part made of a rubber-like elastic material and having an intake passage formed therein and connected at both ends to an air intake port and an internal combustion engine, respectively; An air cleaner for an internal combustion engine, comprising: a filtration section made up of a large number of linear elements arranged in parallel in a forest shape in the length direction; and an actuator that twists the cylindrical section. Device.