JP4316600B2 - Intake device resonator - Google Patents

Description

  The present invention relates to a resonator attached to an intake device of an internal combustion engine.

  Patent Document 1 discloses a structure in which a resonator is connected to an intake duct that constitutes a part of an intake passage of an internal combustion engine via a communication pipe.

JP 2001-59456 A

  In the prior art of Patent Document 1, since the position of the fixed portion for attaching the resonator to the internal combustion engine is not considered, there is a problem that the volume of the intake duct and the resonator, particularly the resonator, is greatly reduced. Further, the upper or outer space around the oil filler cap is not effectively utilized, and there is a problem that the volume of the resonator is greatly reduced. An object of the present invention is to provide a resonator for an intake device that eliminates such problems.

Invention of claim 1, wherein, in the resonator of the intake system resonator main body is communicated through the communicating pipe to the intake duct which constitutes a part of the intake passage of an internal combustion engine, until the upper oil filler cap for an internal combustion engine, wherein The resonator main body is expanded , and an opening is formed in the resonator main body from the upper surface to the upper portion of the oil filler cap. An engine cover is detachably attached to the upper surface of the resonator main body, and the engine cover Is formed with a cylindrical portion that fits into the opening with a gap, and the cylindrical portion includes a lower end opening having a dimension that allows the oil filler cap to pass therethrough .

According to a second aspect of the present invention, in the resonator of the intake device according to the first aspect, the oil filler cap is detachably fitted into an oil filler opening of a head cover of an internal combustion engine, and the lower surface of the resonator main body and the head cover A top surface abuts, and the oil filler opening and the lower end opening of the cylindrical portion of the engine cover are arranged close to each other.

According to a third aspect of the present invention, in the resonator of the intake device according to the second aspect, a buffer member is mounted on both sides of the opening of the resonator main body, and the lower surface of the resonator main body and the top surface of the head cover are the buffer. It contacts, via a member, It is characterized by the above-mentioned.

In the first aspect of the invention, since the resonator main body is expanded to above the oil filler cap , the upper space around the filler cap is effectively used for expansion of the resonator main body. It is possible to avoid a decrease in capacity, and it is possible to form a space for accommodating the internal combustion engine in a compact manner.
In addition, an engine cover is provided separately from the resonator body, and the engine cover is formed with a cylindrical portion that fits into an opening communicating from the upper surface of the resonator body to the top of the oil filler cap. Strength and rigidity are increased, and vibration of the engine cover is suppressed. In addition, since the cylindrical portion is fitted into the opening with a gap, the engine cover can be easily attached to and aligned with the resonator main body, and the resonator main body can be prevented from being contaminated with oil.
And a cylindrical part fits in an opening part at intervals, and transmission of the vibration from a resonator main body to an engine cover is suppressed.

In the invention according to claim 2 , since the opening of the expansion portion of the resonator body approaches the oil filler opening of the head cover by bringing the lower surface of the resonator body and the top surface of the head cover into contact with each other, the opening portion The cylindrical portion fitted to the cylinder also approaches the oil filler opening, so that the lower end opening of the cylindrical portion and the oil filler opening approach, and the cylindrical portion serves as a guide for oil supply to the internal combustion engine. And it is avoided that the resonator main body is soiled with oil.

Furthermore, in the invention described in claim 3, since the lower surface of the resonator main body and the top surface of the head cover are in contact with each other via the buffer member, the interference sound between the resonator main body and the head cover is prevented by the elasticity of the buffer member .

  Hereinafter, an embodiment of the present invention illustrated in FIGS. 1 to 22 will be described.

  The internal combustion engine 1 shown in FIGS. 2, 8, 9 and 10 to which the present invention is applied is mounted on an automobile not shown with the crankshaft not shown in the direction of the vehicle width, that is, commonly known as laterally installed. As shown in FIGS. 8, 9 and 10, a head cover 3 is coupled to the upper surface of the cylinder head 2 of the internal combustion engine 1, and as shown in FIG. The injector base 4 is integrally coupled to the front surface of the injector base 4 and the intake manifold 5 is integrally coupled to the front surface of the injector base 4.

  In the present embodiment, the up, down, front, back, left and right directions are the forward direction of the vehicle, the left side is the left side, the right side is the right side, and the vertical direction of the vehicle is the vertical direction. Yes.

Further, as partially shown in FIG. 10, a throttle valve body 6 is integrally coupled to the left end surface (the back side surface of the paper) of the intake manifold 5, and the left end of the throttle valve body 6 is illustrated in FIG. Further, the intake manifold 5 is connected to the air cleaner cover 9 of the air cleaner 8 via the synthetic resin intake coupling pipe 7, and the intake manifold 5 is communicated with the clean side in the synthetic resin air cleaner 8. air cleaner element is a built, the communicating pipe 11 to the dust side and communicating the air cleaner case 10 integrally coupled to an air cleaner cover 9, the intake duct 32 of the resonator 30 through the relatively soft synthetic resin pipe catch 12 Connected to the downstream end, this resonator 30 is made of polypropylene, which is a thermoplastic resin, and has an intake duct 32. The upstream end is connected to the air intake duct 14 via a relatively soft synthetic resin communication tube 13, and air from the front to the rear is taken into the air intake duct 14 through the opening 14 a of the air intake duct 14. Then, the clean air that has been sucked into the air cleaner 8 through the communication pipe 13, the intake duct 32, the pipe joint 12, and the communication pipe 11 and from which dust has been removed in the air cleaner 8 is supplied from the air cleaner 8 to the intake connection pipe 7, The cylinder head 2 is guided to the cylinder head 2 shown in FIG. 8 through the throttle valve body 6, the intake manifold 5 and the injector base 4, and the cylinder head 2 and a cylinder (not shown) through the intake port 15 and the intake valve 16 in the cylinder head 2. It is sucked into a combustion chamber 17 surrounded by a block.

Further, as shown in FIG. 9, a power steering pump 18 is integrally coupled to a cooling water passage member (water passage) (not shown) by a bolt 18 a, and the power steering pump 18 is integrally coupled to a rotating shaft 18 b of the power steering pump 18. A steering pulley 19 is fitted, and an endless belt 21 is bridged between the power steering pulley 19, another pulley 24 such as a generator and an oil pump, an idler pulley 20, and a dry pulley connected to a crankshaft (not shown). Thus, when the internal combustion engine 1 enters an operating state, the power steering pump 18 is driven to rotate.

  Next, the resonator 30 will be described with reference to FIGS. 5 and 11 to 15.

The resonator 30 is produced by blow molding of a thermoplastic synthetic resin , and includes a hollow resonator body 31 that serves to mute intake noise generated in the intake system, and an intake duct 32 that forms part of the intake passage. And a communication pipe 33 that communicates the internal space of the resonator body 31 and the intake duct 32. As shown in FIG. 5, the resonator body 31 includes a main part 31a surrounded by a dotted line and a two-dot chain line. enclosed consists of a extended portion 31b, and between the internal space of the main part 31a inside the space and the extended portion 31b, FIG. 5, as illustrated in Figure 15, the communicating portion 31c, communicate with each other via a 31i ing.

  Further, as shown in FIGS. 5 and 11 to 13, the resonator body 31 is formed with coupling portions 34 in which the upper and lower wall portions are integrally coupled to each other at five locations. Among the connecting portions 34, three connecting portions 34a, 34b, 34c are formed with bolt through holes 35a, 35b, 35c. The bolt through holes 35a, 35b, 35c are shown in FIG. Bolts 4a, 4b projecting upward from the injector base 4 and bolts 5b projecting upward from a stay 5a integral with the intake manifold 5 penetrate from above to below and are screwed into the bolts 4a, 4b, 5b. A resonator body 31 of the resonator 30 is integrally attached to the cylinder head 2 of the internal combustion engine 1 via the injector base 4 and the intake manifold 5 by a nut (not shown) that is tightened. The

As shown in FIG. 5 , the coupling portion 34 a is surrounded by the resonator body 31, the intake duct 32, and the communication pipe 33 in the resonator 30, and the cylinder head 2 constituting a part of the body of the internal combustion engine 1. It serves as a fixing part for attaching the resonator 30 to the.

Further, in FIG. 5, the upper wall of the main portion 31a of the resonator body 31, located behind both sides closer, FIG. 7, as shown in FIGS. 12 and 15, the recess 31d is formed in the recess an upper surface , clip receiving portion 36 are integrally connected.

  As shown in FIG. 7, the clip receiving portion 36 includes a metal piece 37 formed in an endless rectangular shape in a side view, and a polypropylene leg integrally melt-bonded to the lower portion of the metal piece 37. The clip 38 is composed of a piece 38 and a synthetic resin receiving piece 39 (see FIGS. 18 to 20) that can be elastically and detachably fitted into a square opening (not shown) formed on the upper surface of the metal piece 37. The receiving portion 36 is disposed on the inner surface of the female mold in advance when the resonator 30 is blow-molded. At the time of blow molding, the polypropylene resonator 30 and the polypropylene leg piece 38 of the same material are integrally melt-bonded. It has become so.

18 to 20 includes a top portion 39a wider than the square opening on the upper surface of the metal piece 37, a neck portion 39b slightly narrower than the square opening, an engaging portion 39c, a neck portion 39b, more becomes curved connecting portion 39d for elastically connecting the engagement portion 39c to each other, the a top portion 39a and the neck portion 39 b, engagement of the lower end of the shaft portion 40a of the tree butter made clip 40 (see FIGS. 21 and 22) are large diameter hole 39e is formed in the diameter of the extent to which stop projection piece 40b can pass, the engagement portion 39c, and a small diameter hole 39f of the shaft portion 40a of the clip 40 can penetrate, the locking clip 40 projecting piece 40b A flat hole 39g slightly wider than both side surfaces 40c and a curved groove 39h into which the top surface 40d of the locking projection piece 40b of the clip 40 can be engaged are formed.

  21 and 22, a head 40e is integrally coupled to the top end of the shaft portion 40a of the clip 40, and an engagement groove 40f is formed on the top surface of the head 40e.

In FIG. 5, a concave portion 31e is formed in the front and rear portions of the substantially right and left center of the upper wall of the resonator body 31 of the resonator 30, as shown in FIGS. 7, 12, and 13, and the concave portion 31e synthetic resin base 41a of (a clip receiving portion 36 may be configured similarly to the case of metal) moth Idopin 41 are coupled together during blow molding of the resonator 30.

In addition, the resonator body 31 and the intake duct 32 are not only integrally connected to each other by the communication pipe 33, but the front portion of the main portion 31a of the resonator body 31 and the intake duct 32 are connected by the connecting portion 31f. while being integrally coupled to each other, the extended portion 31b and the intake duct 32 of the resonator body 31, are integrally connected to each other with a consolidated portion 31 g.

Furthermore, the head cover 3 positioned below the extension portion 31b of the resonator body 31, as illustrated in FIG. 8, the oil filler opening 3a is formed, the oil filler cap 22 is detachably to the oil filler opening 3a It is to be fitted. As shown in FIGS. 5, 8 and 14, an opening 31 h that is located immediately above the oil filler opening 3 a and communicates with the expansion space 31 b of the expansion body 31 b. Is formed on the right side (left side in FIG. 5) of the extended portion 31b. As shown in FIG. 8, the head cover 3 and the cylinder head 2 penetrate and the tip electrode is exposed to the combustion chamber 17. plug unit 23 covering the Hare water penetration preventing part serving water penetration preventing eaves 42 (shown in FIG. 5) are formed integrally, befell water to water penetration preventing eaves 42, the arrows in FIG. 5 As shown, after proceeding forward, it flows to the right from the notch 42a.

Furthermore, in FIG. 5, buffer members 43 made of rubber, soft synthetic resin, etc. are integrally mounted on the lower surface of the resonator body 31 as shown by the dotted lines, located on the left and right sides of the opening 31 h of the resonator body 31. Thus, the lower surface of the resonator body 31 and the top surface of the head cover 3 can come into contact with each other.

Moreover, as shown in FIG. 8, a heat shield cover 44 made of a heat insulating material is integrally attached to the rear portion of the extended portion 31 b of the resonator main body 31.

  Following the description of the resonator 30, an engine cover 45 that is detachably attached to the resonator 30 above the resonator 30 will be described.

As the veneer engine cover 45 which plays a role of, certain waterproof plate, the heat radiating plate or the like of the radiator.

  The engine cover 45 shown in FIG. 6 covers the entire upper surface of the main portion 31a of the resonator body 31 in the resonator 30, and covers the upper surface of the portion excluding the left rear portion of the extended portion 31b, as shown in FIG. Further, a tapered oil supply cylindrical portion 46 is formed at a predetermined interval in the opening 31h of the resonator body 31, and the filler cap 22 passes through the lower end opening 46a of the oil supply cylindrical portion 46. The dimensions are set so that they can be used.

  Further, as shown in the left side (the right side of the vehicle body) of FIG. 7, the engine cover 45 is detachably engaged with a receiving piece 39 fitted in a clip receiving portion 36 in the resonator body 31 of the resonator 30. A recess 45a for receiving the head 40e of the clip 40 that can be stopped is formed, and a hole through which the shaft 40a of the clip 40 can pass is formed at the center of the recess 40a. A notch through which the locking projection piece 40b can pass is formed, and the shaft portion 40a of the clip 40 and the locking projection piece 40b can pass through the hole and the notch of the engine cover 45. Then, after the shaft 40a and the locking protrusion 40b of the clip 40 penetrate the recess 45a of the engine cover 45, the clip 40 is slightly swung in either direction, so that the locking protrusion 40b of the clip 40 is It is engaged with the recess 45a of the engine cover 45 so that it cannot fall off.

  Further, as shown in the right side portion (the left side portion of the vehicle body) of FIG. 7, the engine cover 45 is formed with a cylindrical receiving portion 45b positioned immediately above the guide pin 41 in the resonator body 31 of the resonator 30. A guide receiving piece 47 rich in elasticity such as rubber is fitted into a flange 45c bent inward from the lower end of the cylindrical receiver 45b, and the engine cover 45 is mounted on the resonator main body 31 of the resonator 30. At that time, the hole of the guide receiving piece 47 provided in the cylindrical receiving portion 45b of the engine cover 45 is applied to the shaft 41b of the guide pin 41 provided in the concave portion 31e of the resonator main body 31, and the engine cover 45 is strongly pressed. Since the guide receiving piece 47 can be fitted to the shaft 41b of the guide pin 41, the positioning of the engine cover 45 with respect to the resonator body 31 is accurately performed, and the clip 40 penetrating the recess 45a of the engine cover 45 is provided. Engaging protrusion 40b is adapted to be able to easily penetrate the large diameter hole 39e of the receiving pieces 39 of the clip receiving portion 36 of the resonator body 31.

  Furthermore, the engine cover 45 is formed with a peripheral wall portion 48 directed downward along the outer peripheral edge thereof, and a power steering pulley 19 is formed on the right peripheral wall portion 48a of the engine cover 45 as shown in FIG. An arc-shaped notch 48b is formed at a predetermined interval along the outer periphery of the circular arc.

  Further, in FIG. 6, a protrusion 49 drawn by a double dotted concentric circle is provided as shown in FIG. 17, and a contact piece 50 made of rubber, soft synthetic resin or the like is fitted to the protrusion 49. As shown in FIG. 16, the abutment piece 50 can abut against the head of a bolt 18a for mounting the power steering pump 18 when the engine cover 45 is deformed downward. It has become.

  Since the embodiment shown in FIGS. 1 to 22 is configured as described above, the following effects can be obtained.

  The resonator body 31, the intake duct 32, and the communication pipe 33 of the resonator 30 are each formed in a hollow shape. In the coupling portion 34 a surrounded by the resonator body 31, the intake duct 32, and the communication pipe 33, these upper wall portions ( Alternatively, since the outer wall portion and the lower wall portion (or the inner wall portion) are superposed on each other to form a single wall portion, it is possible to avoid a decrease in the capacity of the resonator 30.

  Further, the bolts projecting upward from the injector base 4 at the three coupling portions 34a, 34b, and 34c, which are improved in strength and rigidity by integrally forming the upper wall portion and the lower wall portion of the resonator body 31 of the resonator 30. 4a, 4b, and 4c pass through the bolt through holes 35a, 35b, and 35c of the resonator 30, and the resonator 30 is internally connected via the injector base 4 by nuts (not shown) that are screwed and tightened to the bolt through holes 35a, 35b, and 35c. It can be easily and firmly attached to the main body of the engine 1 in an accurate positional relationship.

  Further, the lower base portion of the metal piece 37 of the clip receiving portion 36 is integrally melt-bonded in advance to a polypropylene leg piece 38 made of the same material as the resonator 30, and this leg piece 38 is blow molded by the resonator 30. Since the fusion bonding is integrally performed with the resonator 30, the metal piece 37 is firmly fixed to the resonator main body 31 of the resonator 30. Moreover, since the metal piece 37 is made of a metal having high strength and rigidity, and the clip 40 penetrating the engine cover 45 is attached to the metal piece 37 through the synthetic resin receiving piece 39, the engine cover 45 can be firmly attached to the resonator body 31 of the resonator 30 with high attachment accuracy.

  Furthermore, since the resonator main body 31 is extended to the upper part of the periphery of the oil filler cap 22 to form the extended portion 31b, the space above the oil filler cap 22 is effectively used for the expansion of the resonator main body 31, and the resonator main body 31 As a result of the reduced thickness of 31, the entire internal combustion engine 1 can be housed in a compact engine room.

  Moreover, since the expansion portion 31b of the resonator body 31 is integrally coupled to the intake duct 32 via the connecting portion 31g, the strength and rigidity of the resonator body 31 are greatly improved.

  Further, the engine cover 45 that is detachably mounted on the upper surface of the resonator body 31 is integrally formed with an oil supply cylindrical portion 46 that can be fitted into the opening 31h of the expansion portion 31b of the resonator body 31. Further, the mounting position of the engine cover 45 with respect to the resonator main body 31 can be easily adjusted, and the strength and rigidity of the engine cover 45 are increased by the oil supply cylindrical portion 46, so that vibration of the engine cover 45 is suppressed.

  Further, since the buffer members 43 are stuck to the left and right lower surfaces of the opening 31h of the resonator main body 31 with an adhesive or the like, the resonator main body 31 can stably come into contact with the upper surface of the head cover 3, and the elasticity of the buffer member 43 Thus, the interference sound between the resonator extension 31b and the head cover 3 is prevented.

  Since the buffer member 43 is attached to the resonator body 31 having a temperature lower than that of the head cover 3, the buffer member 43 is not easily peeled off from the lower surface of the resonator body 31.

  Furthermore, since the water intrusion prevention rod 42 is formed in the resonator body 31 and is located above the spark plug unit 23, water such as rainwater is unlikely to enter the spark plug unit 23. And since the water intrusion prevention gutter 42 is integrally formed in the resonator expansion part 31b, the rigidity of the resonator expansion part 31b is also improved.

  In addition, as shown in FIG. 8, since a heat shield cover 44 is provided on the rear surface of the exhaust extension portion 31 close to the exhaust manifold 25 extending rearward from the cylinder head 2, Heating is avoided and deformation of the exhaust extension 31 due to heat is prevented in advance.

  Further, when the engine cover 45 is attached to the resonator 30, the guide receiving portion integral with the cylindrical receiving portion 45b of the engine cover 45 is attached to the shaft 41b of the guide pin 41 embedded integrally in the concave portion 31e of the resonator main body 31. If the hole 47 is applied and the engine cover 45 is pressed downward, the engine cover 45 is easily temporarily fixed to the resonator body 31. Since there are two guide pins 41, the alignment of the engine cover 45 with respect to the resonator body 31 is ensured.

  After that, the clip 40 is pushed down so that the shaft portion 40a and the locking protrusion 40b of the clip 40 can be easily passed through the receiving piece 39, and the engine cover 45 can be easily and reliably inserted into the resonator body 31. Can be attached firmly.

  Further, as shown in FIG. 17, in a state where the elastic contact piece 50 is fitted to the protrusion 49 protruding from the lower surface of the engine cover 45 and the engine cover 45 is attached to the resonator 30. 9 and FIG. 16, since the bolt 18a of the power steering pump 18 is disposed at a predetermined distance on the contact piece 50, the engine cover 45 is pushed downward and moved downward. Even if it bends, the abutment piece 50 abuts against the bolt 18a, and the engine cover 45 does not bend downward any more. Therefore, the engine cover 45 is connected to the power steering pump 18, the power steering pulley 19, Wrap around the engine cover 45, the power steering pump 18, the power steering pulley 19, and the pulley 19 without contacting the endless belt 21 wound around the pulley 19. Endless belt 21 is damaged by friction or collision is prevented in advance.

  Further, since the bolt 18a, the protrusion 49, and the contact piece 50 are arranged near the power steering pulley 19 adjacent to the engine cover 45, the stress applied to the engine cover 45 is reduced, and the protrusion 49 and the contact piece 50 are in contact with each other. The piece 50 is short and sufficient.

  Furthermore, since the load from the engine cover 45 is applied to the bolt 18a that firmly fixes the power steering pump 18 to the injector base 4, a large load can be prevented from being applied to the main body of the power steering pump 18.

  In addition, since the contact piece 50 rich in elasticity is fitted to the protrusion 49, when the protrusion 49 comes into contact with the bolt 18a, the contact piece 50 absorbs shock and vibration and relaxes.

  Further, since the lower end opening 46a of the oil supply cylindrical portion 46 of the engine cover 45 is close to the opening 3a of the head cover 3 in which the oil filler cap 22 is fitted, the oil supply cylindrical portion 46 is connected to the internal combustion engine. It serves as a guide for oil supply to the engine 1, and the contamination of the opening 31h of the resonator body 31 with oil can be avoided.

  In the above-described embodiment, the resonator 30 is disposed above the internal combustion engine 1, but the resonator 30 may be disposed on the front, rear, left, and right sides of the internal combustion engine 1, and in this case, in the above embodiment, The bottom means outside, inside or front and back.

In the above embodiment, the number of bolt through holes 35 for mounting the resonator 30 to the internal combustion engine 1 is three, but it may be two or four or more.

  Further, although the number of the clip receiving portions 36 and the number of the clips 40 for locking the engine cover 45 to the resonator main body 31 is two, one or three or more may be used.

  Further, among the four spark plug units 23 arranged on the left and right sides, the left end and the adjacent spark plug unit 23 are covered with the resonator extension 31b, and the second spark plug unit 23 from the right is infiltrated with water. Although it is covered with the prevention rod 42, the water entry prevention rod 42 may be extended rightward so as to cover the spark plug unit 23 at the right end.

It is a whole perspective view of an air intake device provided with a resonator concerning the present invention. FIG. 2 is a schematic plan view of an internal combustion engine equipped with the intake device illustrated in FIG. 1. FIG. 3 is a schematic plan view of a state in which a resonator is mounted on the internal combustion engine illustrated in FIG. 2. FIG. 4 is a schematic plan view showing a state where an engine cover is mounted on the internal combustion engine shown in FIG. 3. It is a top view of a resonator. It is a top view of an engine cover. FIG. 6 is an enlarged cross-sectional view of a main part cut along a line XII-XII in FIG. 5 in a state where an engine cover is mounted on the resonator. FIG. 4 is an enlarged cross-sectional view of a main part cut along the front and rear surfaces through the center of an oil supply tubular portion in a state where a resonator and an engine cover are sequentially attached to the head cover. FIG. 2 is an enlarged side view of a main part on the right side of the internal combustion engine 1. FIG. 10 is an enlarged side view of the main part on the right side with the power steering pump, idler pulley, endless belt and pulley removed in FIG. 9. It is sectional drawing of the resonator cut | disconnected along the XI-XI line of FIG. It is sectional drawing of the resonator cut | disconnected along the XII-XII line | wire of FIG. It is sectional drawing of the resonator cut | disconnected along the XIII-XIII line | wire of FIG. It is sectional drawing of the resonator cut | judged along the XIV-XIV line | wire of FIG. It is sectional drawing of the resonator cut | disconnected along the XV-XV line | wire of FIG. It is the perspective view which illustrated the relative relationship between an engine cover and a power steering pump. It is sectional drawing of the state which mounted | wore the engine cover with the contact piece. It is a top view of a receiving piece. It is sectional drawing of the receiving piece cut | judged along the XIX-XIX line | wire of FIG. It is a side view of FIG. It is a front view of a clip. It is a side view of a clip.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Internal combustion engine, 2 ... Cylinder head, 3 ... Head cover, 4 ... Injector base, 5 ... Intake manifold, 6 ... Throttle valve body, 7 ... Intake connection pipe, 8 ... Air cleaner, 9 ... Air cleaner cover, 10 ... Air cleaner case, 11 ... Communication pipe, 12 ... Pipe joint, 13 ... Communication pipe, 14 ... Air intake duct, 15 ... Intake port, 16 ... Intake valve, 17 ... Combustion chamber, 18 ... Power steering pump, 19 ... Power steering pulley, 20 ... Idler pulley, 21 ... endless belt, 22 ... oil filler cap, 23 ... spark plug unit, 24 ... pulley, 25 ... exhaust manifold,
30 ... Resonator, 31 ... Resonator body, 32 ... Intake duct, 33 ... Communication pipe, 34 ... Connection part, 35 ... Bolt through hole, 36 ... Clip receiving part, 37 ... Metal part, 38 ... Leg piece, 39 ... Reception One piece, 40 ... clip, 41 ... guide pin, 42 ... water intrusion prevention rod, 43 ... buffer member, 44 ... heat shield cover,
45 ... engine cover, 46 ... cylindrical part for oil supply, 47 ... guide receiving piece, 48 ... peripheral wall part, 49 ... projection, 50 ... contact piece.

Claims (3)

In the resonator of the intake device in which the resonator main body is communicated with the intake duct constituting a part of the intake passage of the internal combustion engine via the communication pipe,
The resonator main body is expanded to above the oil filler cap of the internal combustion engine , and an opening is formed in the resonator main body from the upper surface thereof to the upper portion of the oil filler cap .
An engine cover is detachably attached to the upper surface of the resonator body,
The engine cover is formed with a cylindrical portion that fits into the opening with a gap,
The resonator according to claim 1, wherein the cylindrical portion includes a lower end opening having a size through which the oil filler cap can pass . The oil filler cap is detachably fitted into an oil filler opening of a head cover of an internal combustion engine,
The bottom surface of the resonator body and the top surface of the head cover abut,
2. The resonator for an intake device according to claim 1, wherein the oil filler opening and the lower end opening of the cylindrical portion of the engine cover are arranged close to each other. 3. The intake device according to claim 2, wherein a buffer member is mounted on both sides of the opening of the resonator body, and a lower surface of the resonator body and a top surface of the head cover are in contact with each other via the buffer member. Resonator.

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