JP2004028109A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide space saving by directly disposing above an engine main body and to secure workability of plug replacement.
SOLUTION: A cleaner main body 6 having an intake outlet section 9 and a cleaner cap 7 having an intake inlet section 10 and detachable from the cleaner main body 6 are provided. The cleaner cap 7 is attached to the cylinder head cover 3 so as to be located immediately above the region extending outside, and the cleaner cap 7 is configured to be located immediately above the region extending from the center of the cylinder head cover 3 to the other side. The cleaner cap 7 is detached from the cleaner body 6.
[Selection diagram] Fig. 1

Description

The present invention relates to an air cleaner, and more particularly to an air cleaner disposed immediately above a cylinder head cover.

2. Description of the Related Art Conventionally, an air cleaner of an automobile engine is generally disposed in a proper position in an engine room while being supported on a vehicle body side, and is generally connected to an intake manifold of an engine body via an intake pipe (for example, See Patent Document 1.).

However, when a large-capacity air cleaner is used, there is a problem that it is difficult to secure an arrangement space near the engine body.In addition, the pipe connecting the throttle body on the engine body side and the air cleaner on the vehicle body side has a problem. In addition, there is a problem that parts for vibration countermeasures between the vehicle and the vehicle body are required, and many man-hours are required for piping work.

Therefore, as shown in FIG. 5, it is considered that an air cleaner 33 is disposed above the engine body 31 and attached to the cylinder head cover 32 via a rubber mount 34, and an intake outlet 35 of the air cleaner 33 is connected to a throttle body 36. Have been.
Published Japanese Utility Model Application No. 1-61451

However, in the configuration shown in FIG. 5, since it is necessary to open the upper part of the center part of the cylinder head cover 32 in order to ensure the workability at the time of plug replacement, the cylinder head cover 32 extends from one side to the outside. It is necessary to dispose the air cleaner 33 so as to overhang, and there is a problem that the arrangement of the intake manifold and the like is greatly restricted. The air cleaner 33 is supported in a cantilevered state, and is supported via a rubber mount 34 so as to absorb dimensional variations during assembly between components connected to the air cleaner 33 and to absorb vibration of the air cleaner 33. Therefore, when the connection between the throttle body 36 and the air cleaner 33 is made highly rigid, the vibration of the throttle body 36 is transmitted to the air cleaner 33 to generate noise. In order to prevent this, it is necessary to adopt a connection structure such as a rubber hose and a hose clamp, which secures vibration isolation and sealing properties, for the connection means 37 between the air cleaner 33 and the throttle body 36, resulting in an increase in cost. There is.

In view of the above-mentioned conventional problems, the present invention can be arranged directly above the engine main body while securing the workability of plug replacement, can save space around the engine main body, and has a low-cost and simple connection configuration. It is another object of the present invention to provide an air cleaner capable of preventing generation of noise due to vibration transmission from a throttle body.

An air cleaner according to the present invention is an air cleaner attached to a cylinder head cover in which a plug is arranged in a cylinder arrangement direction at a center portion, wherein the air cleaner has a cleaner main body having an intake outlet portion, and has a suction inlet portion and is detachable from the cleaner main body. A cleaner cap is attached to the cylinder head cover such that the cleaner body is located immediately above the area extending from one side of the cylinder head cover to the outside thereof, and the cleaner cap is located immediately above the area extending from the center of the cylinder head cover to the other side. It is configured to be located.

According to the air cleaner of the present invention, it is provided with a cleaner main body having the intake outlet as described above, and a cleaner cap having the intake inlet and detachable from the cleaner main body. From the central portion of the cylinder head cover to the other side, and the cleaner cap is attached to the cylinder head cover so as to be located immediately above the region extending from the outside to the outside thereof. Almost the entire air cleaner is located directly above the cylinder head cover, so a large-capacity air cleaner can be placed by effectively utilizing the space directly above the engine body, and the space around the engine body can be saved. Can be attached and detached when replacing the plug. Nakyappu can the opening the space above the central portion of the cylinder head cover by disengaging from the cleaner main body, the plug replacement without removing the air cleaner can be carried out with good workability.

Hereinafter, an embodiment of the air cleaner of the present invention will be described with reference to FIGS.

1 to 3, reference numeral 1 denotes an engine body, reference numeral 2 denotes a cylinder head thereof, and reference numeral 3 denotes a cylinder head cover. Reference numeral 4 denotes a plug provided for each cylinder. The upper end of the plug 4 projects into a concave portion 3a formed in the center of the cylinder head cover 3 in the width direction along the cylinder arrangement direction.

Reference numeral 5 denotes an air cleaner disposed directly above the cylinder head cover 3 and is composed of a cleaner main body 6 and a cleaner cap 7 which is detachably mounted on the cleaner main body 6 in a horizontal direction. The cleaner main body 6 is formed on the lower surface of an end opposite to the joint opening 6a and the filter arrangement part 8 arranged adjacent to the joint opening 6a with the cleaner cap 7 so as to cross the opening cross section. And an intake outlet 9.

Further, the cleaner cap 7 has an intake port 10 on one side of the end opposite to the joint opening 7a with the cleaner main body 6, and the intake air flowing from the intake port 10 is evenly dispersed. It is configured to flow toward the filter arrangement section 8.

The cleaner main body 6 is disposed so as to be located immediately above a region extending from one side of the cylinder head cover 3 to the outside thereof, and mounting legs 11 projecting from both lower ends of the joining opening 6 a are connected to the cylinder via a rubber mount 12. The head cover 3 is mounted on the upper surface of one side. The cleaner cap 7 is configured to be located immediately above a region extending from the center to the other side of the cylinder head cover 3, and is joined to the cleaner main body 6 via a pair of upper and lower hinges 13 provided at one end of the joint opening 7 a. A locking clip 15 is supported at one end of the opening 6a so as to be openable and closable, and is provided at the other end of the joining opening 6a of the cleaner body 6 in an engaging recess 14 formed on the outer surface of the other end of the joining opening 7a. The cleaner main body 6 and the cleaner cap 7 are configured to be engaged with each other and fixed to each other in a state where they are joined to each other. The cleaner cap 7 may be configured to be completely separated from the cleaner body 6.

An inclined surface 16 is formed on the upper surface of the other side of the cylinder head cover 3 so as to become higher toward the center, and a support member 17 is provided below the cleaner cap 7 at a position corresponding to the inclined surface 16. An elastic contact portion 18 made of rubber or the like is attached to the lower end of the support member 17. When the cleaner cap 7 is mounted on the cleaner main body 6, the elastic contact portion 18 is configured to engage with the inclined surface 16 in a pressure-contact state.

As shown in FIG. 4, an intake outlet 9 of the air cleaner 5 is fitted and connected to an inlet 21 of a throttle body 20 fixedly supported outside one side of the engine body 1, and is connected to the inside and outside thereof. O-rings 19 interposed on the peripheral surface are connected to each other in a sealed state. As shown in FIG. 4, the center of gravity 5 a of the air cleaner 5 is located at a position where the cleaner body 6 is attached to the cylinder head cover 3, that is, almost immediately above the rubber mount 12. In FIG. 4, reference numeral 22 denotes an intake manifold connected to an outlet of the throttle body 20, reference numeral 23 denotes a collecting pipe portion, and reference numeral 24 denotes a branch pipe. Reference numeral 25 denotes a fixing bracket for connecting and fixing the throttle body 20 to the cylinder head 2, and reference numeral 26 denotes a connecting bracket for connecting and fixing the intake manifold 22 to an appropriate position of the engine body 1.

  In the above configuration, almost the entire air cleaner 5 including the cleaner body 6 and the cleaner cap 7 is disposed immediately above the cylinder head cover 3, so that the large capacity air cleaner 5 can effectively utilize the space immediately above the engine body 1. The space around the engine body can be saved. In addition, when the plug 4 is exchanged, the upper space at the center of the cylinder head cover 3 can be opened by detaching the detachable cleaner cap 7 from the cleaner main body 6 as shown by the phantom line in FIG. The replacement of the cleaner 4 can be performed with good workability without removing the cleaner body 6.

When the cleaner cap 7 is mounted on the cleaner main body 6, the other side of the cleaner cap 7 is securely supported on the upper surface of the other side of the cylinder head cover 3 via the elastic contact portion 18 at the lower end of the support member 17. Therefore, the structure for joining the cleaner cap 7 to the cleaner main body 6 can be simplified, the cleaner cap 7 can be easily attached and detached, and the workability of plug replacement is further improved. In addition, since the vibration of the cleaner cap 7 is suppressed by the elastic contact portion 18, the effect of preventing the vibration of the air cleaner 5 can be improved.

Further, since the inlet 21 of the throttle body 20 and the intake outlet 9 of the cleaner main body 6 are fitted to each other and the inexpensive O-ring 19 is used as the sealing means, both can be connected with an inexpensive configuration. Even if the body 20 and the cleaner main body 6 are connected with considerably high rigidity, the position just below the center of gravity 5a of the air cleaner 5 is supported by the cylinder head cover 3 via the rubber mount 12, and the other side of the cleaner cap 7 is Since the air cleaner 5 is supported by the cylinder head cover 3 via the elastic contact portion 18, vibration of the air cleaner 5 can be effectively prevented, and generation of noise by transmission of vibration from the throttle body 20 is reliably suppressed. be able to.

It is a partial section front view of an air cleaner of one embodiment of the present invention. FIG. 3 is a partial cross-sectional plan view of the air cleaner according to the embodiment. It is a perspective view of the air cleaner of the embodiment. FIG. 2 is an overall front view of an intake device using the air cleaner of the embodiment. FIG. 8 is a perspective view of a conventional configuration example in which an air cleaner is arranged on an upper portion of an engine body.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Engine main body 3 Cylinder head cover 4 Plug 5 Air cleaner 6 Cleaner main body 7 Cleaner cap 8 Filter arrangement part 9 Intake outlet part 10 Intake inlet part 11 Mounting leg 12 Rubber mount 16 Inclined surface 17 Support member 18 Elastic contact part 20 Throttle body 21 Inlet Department

Claims (1)

An air cleaner attached to a cylinder head cover in which a plug is arranged in a cylinder arrangement direction at a center portion, comprising: a cleaner main body having an intake outlet portion, and a cleaner cap having an intake inlet portion and detachable from the cleaner main body. The cleaner body is attached to the cylinder head cover so as to be located immediately above a region extending from one side of the cylinder head cover to the outside thereof, and the cleaner cap is located immediately above a region extending from the center of the cylinder head cover to the other side. An air cleaner characterized by the above.

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