JPH08326614A - Air take-in device in internal combustion engine for vehicle - Google Patents

Abstract

PURPOSE: To arrange a long air duct pipe lead to an air cleaner without disturbing an internal combustion engine, and attain easily and speedily exchange of a filter element in the air cleaner in an air take-in device in which the air cleaner is arranged on one end of an internal combustion engine for a vehicle in an axial line of a crank shaft. CONSTITUTION: A clean side case 6a and a dust side case 6b of an air cleaner are separated from each other in the bilateral direction with respect to a crank axial line of an internal combustion engine in plan view. A bendable bellows part 14 is formed in an air duct pipe, at its portion on the air cleaner side compared to an installation portion to the internal combustion engine and adjacent to the installation portion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for introducing atmospheric air into an air cleaner of an internal combustion engine mounted on a vehicle through an air duct.

[0002]

2. Description of the Related Art Generally,
In the case where atmospheric air is taken into the air cleaner via the air duct pipe, the tip of the air duct pipe is located as far away from the internal combustion engine as possible as described in, for example, Japanese Utility Model Laid-Open No. 3-87863. It should be configured to take in atmospheric air at a low temperature by opening the air duct at a low temperature. The longer length is also effective in reducing the noise generated when the atmospheric air is taken in.

However, the lengthening of the air duct pipe to the air cleaner in this manner requires that the air duct pipe is attached to the internal combustion engine or the vehicle body frame or the like in order to support the air duct pipe. However, if the air duct pipe is attached midway to the internal combustion engine or the vehicle body frame, etc., every time the filter element in the air cleaner is replaced, the air duct pipe may be replaced with respect to the internal combustion engine or the vehicle body frame. Since the mounting portion must be removed, there is a problem that the filter element cannot be replaced easily and quickly.

According to the present invention, in a recent vehicle internal combustion engine, an air cleaner may be arranged at one longitudinal end of the internal combustion engine as described in, for example, Japanese Utility Model Laid-Open No. 4-52556. Focusing on what is being done, by utilizing this, it is a technical problem to solve the above-mentioned problem and to dispose a long air duct pipe to the air cleaner at a portion that does not disturb the air cleaner. .

[0005]

In order to achieve this technical object, the present invention provides "a filter element having a clean side case and a dust side case between one end portion in the crank axis direction of an internal combustion engine mounted on a vehicle. In the air intake device, the air cleaner is detachably joined by sandwiching the air cleaner so that the clean side case of the air cleaner is connected to a surge tank of an intake manifold attached to a longitudinal side surface of the internal combustion engine. An air duct pipe to the dust side case of the air cleaner is arranged on the upper surface of the internal combustion engine so as to extend in the crank axis direction, and the air duct pipe is attached to the other end of the internal combustion engine to clean the air cleaner. Flatten the side case and dust side case. While being configured to be separated in the left-right direction with respect to the crank axis of the internal combustion engine, a bendable bellows is provided on a portion of the air duct pipe on the air cleaner side of the attachment portion for the internal combustion engine and adjacent to the attachment portion. Section is provided. "

[0006]

[Operation] As described above, since the air duct pipe to the air cleaner disposed at one end of the internal combustion engine is disposed on the upper surface of the internal combustion engine so as to extend in the crank axis direction thereof, the air duct having a relatively long length is provided. The pipe can be arranged in an unobstructed area on the upper surface of the internal combustion engine.

Further, as mentioned above, the clean side case and the dust side case in the air cleaner are
While being configured so as to be separated in the left-right direction with respect to the crank axis of the internal combustion engine in a plan view, a bendable bellows portion in a portion of the air duct pipe that is closer to the air cleaner than the attachment portion to the internal combustion engine and adjacent to the attachment portion. By providing the air duct pipe, the air duct pipe can be freely bent at the location of the bellows portion provided on the air duct pipe, so that the dust side case is released after the joining of the clean side case and the dust side case in the air cleaner is released. To
By separating the air duct pipe connected thereto from the clean side case while bending it at the bellows portion, the filter element sandwiched therebetween can be replaced.

[0008]

Therefore, although the long air duct pipe to the air cleaner is attached to the internal combustion engine in a non-obtrusive manner, the filter of the air cleaner is not disassembled without disassembling the attachment portion of the air duct pipe to the internal combustion engine. This has the effect that the element can be replaced easily and quickly.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings of FIGS. In the figure, reference numeral 1 indicates a vehicle body frame of a vehicle. In an engine room 1a provided in a front portion of the vehicle body frame 1, an internal combustion engine 2 has a crank axis 2a substantially perpendicular to a traveling direction of the vehicle. It is mounted sideways so that it becomes.

Reference numeral 3 denotes an intake manifold attached to the longitudinal side surface of the internal combustion engine 2, and a throttle body 5 is attached to a surge tank 4 in the intake manifold 3. Further, reference numeral 6 denotes an air cleaner formed by detachably joining a clean side case 6a and a dust side case 6b with a filter element 6c interposed therebetween. The air cleaner 6 is in the crankshaft axis 2a direction of the internal combustion engine 2. Is arranged at one end thereof so as to connect the intake pipe 7 to the throttle body 5 to the clean side case 6a.
Clean side case 6a in this air cleaner 6
The dust side case 6b and the dust side case 6b are configured to be separated from each other in the left-right direction with respect to the crank axis 2a of the internal combustion engine 2 in a plan view.

That is, the clean side case 6a of the air cleaner 6 has a pin 6a 'projecting downward from the lower surface thereof attached to a first bracket 8 projecting from the internal combustion engine 2 or the like in a ring 9 made of a soft elastic material such as rubber. While being inserted, the ear piece 6a ″ protruding from the side surface is attached to the second bracket 10 protruding from the internal combustion engine 2 or the like by fastening it with a bolt 12 via a grommet 11 made of a soft elastic body, The dust side case 6b in the air cleaner 6 is the clean side case 6a.
On the other hand, in the state where the lower surface side is rotatably pivoted by the pin 6d, the upper surface is detachably joined by the engageable clip 6e.

Reference numeral 13 indicates the air cleaner 6
2 shows an air duct pipe for intake of atmospheric air, which is connected to the side surface of the dust side case 6b in FIG.
It is arranged so as to extend in the direction of a, and the opening 1
3b is located at a position close to the body frame 1,
A mounting piece 13a is integrally formed on the other end portion of the air duct pipe 13 in the internal combustion engine 2, and the mounting piece 13a is attached to the internal combustion engine 2 by fastening a bolt or the like. A bendable bellows portion 14 is provided in a portion of the air duct pipe 13 that is closer to the air cleaner 6 than the attachment piece 13a for the internal combustion engine 2 and adjacent to the attachment piece 13a.

As described above, since the air duct pipe 13 to the air cleaner 6 arranged at one end of the internal combustion engine 2 is arranged on the upper surface of the internal combustion engine 2 so as to extend in the crank axis 2a direction, it is relatively long. The length of the air duct pipe 13 can be arranged in a non-obstructing portion on the upper surface of the internal combustion engine 2. Further, as described above, the clean side case 6a and the dust side case 6b in the air cleaner 6 are configured to be separated from each other in the left-right direction with respect to the crank axis of the internal combustion engine 2 in a plan view. On the air cleaner 6 side with respect to the attachment piece 13a for the internal combustion engine 2, and the attachment piece 13
By providing the bendable bellows portion 14 adjacent to a, the air duct tube 13 can be freely bent at the location of the bellows portion 14 provided therein.

Therefore, after removing the clip 6e on the upper surface side of the air cleaner to release the joining of the dust side case 6b to the clean side case 6a, the dust side case 6b is shown by a chain double-dashed line in each drawing. While bending the air duct pipe 13 connected to this at the location of the bellows portion 14 and opening the air duct pipe 13 away from the clean side case 6a around the lower pin 6d, the filter element sandwiched therebetween is opened. 6c
The attachment piece 13a of the air duct pipe 13 can be replaced without removing it from the internal combustion engine 2.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is an enlarged sectional view taken along line II-II of FIG.

[Explanation of symbols]

 1 Body Frame 2 Internal Combustion Engine 2a Crank Axis of Internal Combustion Engine 3 Intake Manifold 4 Surge Tank 5 Throttle Body 6 Air Cleaner 6a Clean Side Case 6b Dust Side Case 13 Air Duct Pipe 13a Air Duct Pipe Attachment Piece 14 Bellows

Claims (1)

[Claims] 1. An air cleaner comprising a clean side case and a dust side case, which are detachably joined with a filter element interposed therebetween, at one end in the crank axis direction of an internal combustion engine mounted on a vehicle. In an air intake device arranged to connect a side case to a surge tank in an intake manifold attached to a longitudinal side surface of the internal combustion engine, an air duct pipe to a dust side case in the air cleaner is provided on an upper surface of the internal combustion engine. The air duct pipe is arranged so as to extend in the crank axis direction, and the air duct pipe is attached to the other end portion of the internal combustion engine, and the clean side case and the dust side case in the air cleaner are seen in a plan view in the crank axis line of the internal combustion engine. At the time of separation in the left and right direction On the other hand, in the internal combustion engine for a vehicle, a bendable bellows portion is provided in a portion of the air duct pipe on the air cleaner side of the attachment portion for the internal combustion engine and adjacent to the attachment portion. Air intake device.