JP2000297708A - Intake device for internal combustion engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an intake device for an internal combustion engine which can use a constituent member which on one hand, can reduce offensive noises, and on the other hand, can be easily realized and can be favorably arranged spatially. SOLUTION: In this intake device 1 for an internal combustion engine having a stroke piston structure, which is so formed that it has a container 8 connected to a cylinder head 6 and the container 8 is expanded adjacently to the cylinder head 6 and also connected through supply pipelines 11, 12, 13 to the intake pipeline of the cylinder head 6 having a valve for exchanging and controlling gas, a device 21 which damps release of noise from a surface is arranged in the container 8 and/or the supply pipeline 11, 12, 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intake device for an internal combustion engine having a stroke piston structure, comprising a container connected to a cylinder head, the container extending adjacent to the cylinder head. And connected via a supply line to an intake line of the cylinder head having a valve for controlling gas exchange.

[0002]

BACKGROUND OF THE INVENTION Attenuation of the noise emissions of highly developed internal combustion engines is a priority task, in which components such as intake systems or air filters or the like are of particular importance. It is becoming.

[0003] Published German Patent Application No. 1950
The intake device of an internal combustion engine, which is known from U.S. Pat. No. 4,223,297, is provided with a silencer, which is provided with a damping element having a closed surface. The intake pipe is guided through this damping element and is provided in the region of an annular chamber having a plurality of openings. Although it is intended to reduce the noise emission of the internal combustion engine by such a configuration, it is difficult to freely form the internal combustion engine in the region of the intake device with the above-described configuration,
Additional construction space that is not normally used is required.

[0004]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an internal combustion engine which has a reduced jarring noise on the one hand and which can use components which can be realized in a simple manner and can be installed spatially conveniently. It is to provide an intake device for an engine.

[0005]

SUMMARY OF THE INVENTION In order to solve this problem, in an arrangement according to the invention, a device is provided in the container and / or in the supply line for damping the emission from the surface.

[0006]

The main advantage achieved by the invention is that the maximum point of resonance is intentionally shifted or prevented in various ways by such a device, so that noise from the surface and thus also noise emissions are reduced. It is to be made. An excellent internal combustion engine with more than two valves per cylinder (4-valve technology) produces an unpleasant high-frequency noise component due to optimized gas exchange. This noise component is generated from the intake device itself, possibly from an upstream air filter. Similarly, noise components can occur directly through the intake openings as airborne sounds.
By means of a device having a through-hole wall element, an insert element having a plurality of openings and an insert made of an absorbent material, an aggressive noise reduction or an improvement in the operating quality of the internal combustion engine is achieved. Such wall members and inserts and inserts are easily realizable and can be integrated into the intake system with little space requirement.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings.

The intake device 1 is disposed in the internal combustion engine 2, and only the inflow passages 3, 4, 5 of the cylinder head 6 of the internal combustion engine 2 are shown in the drawing. The internal combustion engine 2 has two cylinder rows 7 located opposite each other. In the drawing, only the cylinder row 7 extending to the left side of the intermediate plane AA among these cylinder rows 7 is shown. This is also the case for the intake device 1 with a container 8 for each cylinder row 7. The two containers 8 are connected to one another via connecting lines 9, 10. The connecting line 9 is a distribution pipe, and the connecting line 10 is a resonance pipe. Next, the configuration of the intake device 1 will be described in detail based on only one container 8. This is because the other container has the same structure.

The container 8 comprises individual tubular supply lines 11, 1
2, 13 are connected to the inflow passages 3, 4, 5 of the cylinder head 6. The cylinder head 6 contains more than two valves for each cylinder, preferably two intake valves and two exhaust valves for gas exchange control.

The container 8 has a rectangular base when viewed from above, which base is defined by shorter container walls 14,15 and longer container walls 16,17. These walls 14, 15, 16, 17 form the container 8 together with the container walls 18, 19 in the form of a cover and surround the container interior 20. Suitable materials for the container 8 are metal or plastic or the like.

The vessel interior 20 is provided with a device 21 for attenuating noise emissions from surfaces that occur during operation of the internal combustion engine 2. This device 21 is formed by an inner wall 22 according to FIGS. Some or many through holes 23 are provided in the inner wall 22. These through holes 23 may be formed as a kind of perforation 24, and the through holes 23 may be formed as DI <DI
Different diameters DI, DI where I or DI> DII
I may be present. The through-holes 23 having different diameters DI, DII may be defined by calculation and / or empirically. The inner wall 22 extends between the longer container walls 16, 17 facing each other. However, a configuration is also conceivable in which the inner wall 22 is connected to the shorter container walls 14 and 15. In this case, the inner wall 22 is
17 or the container walls 14 and 15 may extend at an angle α. Further, the inner wall 22 extends over the entire height HG of the container 8, and the cover-like container wall 18,
19 may be connected to each other.

In FIG. 3, first insertion members 25, 26, 2 forming a device 21 are provided in supply lines 11, 12, 13.
It can be seen that 7 has been inserted. These insertion members 2
5, 26, 27 are local pipe sections which the supply lines 11, 12, 13 surround on the inside, these pipe sections being located in areas guided away from the container 8,
The funnel-shaped enlarged portions 29, 30, 31 of the tube section are
It is rushing to zero. FIG. 4 shows that comparable second inserts 32, 33 are provided in the coupling lines 9, 10. The cylindrical extensions 3 of these insertion members 32, 33
4 and 35 extend into the container inner chamber 20. Inserts 25, 26, 27 also having perforations 24
Are in direct contact with the inner surfaces of the supply lines 11, 12, 13 and the inserts 32, 33, which also have perforations 24, with the inner surfaces of the coupling lines 9, 10. However, the annular intermediate chamber ZR is formed so that the insertion member 2 can be almost
It is also possible to insert 5, 26, 27, 32, 33 into a suitable conduit.

FIGS. 5 and 6 show that the device 21 has inserts 36, 37 made of an absorbent material. These inserts 36, 37 are provided on opposed container walls 14, 15 in the container interior 20. The volumes VI, VII of the inserts 36, 37 can be calculated and / or empirically calculated. These inserts 36, 37 can be made from foamed materials or ceramics or the like. FIG. 7 shows another embodiment. According to this insert 3
Reference numerals 8 and 39 are arranged on the cover-like container walls 18 and 19. The insert 38 is located in a local recess 40 provided in the container wall 18 of the container 8 and, if the insert is formed from a foam material, as long as the container is a plastic member, the insert can be inserted together with the container. Can be manufactured from two parts. The insert 39 is a separate foam material which is held in place by means of support members 41, 42 extending parallel to the container wall 19.

FIG. 8 shows an inner wall 43 of the device 21 which extends parallel to the container wall 19. This inner wall 43 of the device 21 has the perforations 24 described above. The inner wall 43 limits the reflection chamber 44. In some cases, an insert 45 made of an absorbing material can be arranged in this reflection chamber 44. In the reflection chamber 44, sound energy is converted to heat energy when passing through the perforations, and the sound waves are reflected by the wall, and as a result, the sound waves overlap. Higher frequency ranges can be attenuated as the volume of the reflection chamber (resonance chamber) 44 or the distance AS between the inner wall 43 and the container wall 19 is reduced.

According to FIGS. 9 and 10, the container 8 is adjacent to the inflow passages 3, 4, 5, ie the supply lines 11, 12,.
Compensation chambers 46, 47, 48, 49, 50, 5
One. These compensation chambers 46, 47, 48, 4
9, 50, 51 are provided in a kind of rectangular casing 52, in which the device 21 operates. The device 21 has inner walls 53, 54, 55, 5
6, 57, 58, 59 and 60. These inner walls 53, 54, 55, 56, 57, 58, 59, 6
Reference numeral 0 denotes a component of the casing 52, of which the perforations 24 are provided only on the inner walls 53, 54, 56, 57, 59, 60.

[Brief description of the drawings]

FIG. 1 is a schematic view of an intake device of a multi-cylinder internal combustion engine as viewed from above.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a schematic view of an intake device corresponding to FIG. 1;

FIG. 4 is a schematic view of an intake device corresponding to FIG. 1;

FIG. 5 is a schematic view of an intake device corresponding to FIG. 1;

FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5;

FIG. 7 is a schematic view of an intake device corresponding to FIG. 2;

FIG. 8 is a schematic view of an intake device corresponding to FIG. 2;

FIG. 9 is a schematic view of an intake device corresponding to FIG. 1;

FIG. 10 is a schematic view of the intake device shown in FIG.

[Explanation of symbols]

Reference Signs List 1 intake device, 2 internal combustion engine, 3, 4, 5 inflow passage, 6 cylinder head, 7 cylinder row, 8
Container, 9,10 coupling line, 11,12,13 supply line, 14,15,16,17,18,19 container wall, 20 container inner chamber, 21 device, 22 inner wall,
23 through holes, 24 perforations, 2
5, 26, 27 insertion member, 29, 30, 31 enlarged diameter portion, 32, 33 insertion member, 34, 35 extension portion,
36, 37, 38, 39 insert, 40 recess, 41, 42 support member, 43 inner wall, 44
Reflection chamber, 45 inserts, 46, 47, 48, 4
9, 50, 51 Compensation chamber, 52 Casing, 53,
54,55,56,57,58,59,60 inner wall

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F02M 35/10 301R (72) Inventor Jurgen Coteweiss Weissach im Wengert 21 (72) Inventor Jürgen Schorn Germany Ruthesheim Kant Strasse 8 (72) Inventor Siegfried Meyer Germany Weil der Stadt am Heinrichsberg 33

Claims (19)

[Claims] 1. An intake device for an internal combustion engine (2) having a stroke piston structure, comprising a container (8) connected to a cylinder head (6), said container (8) being said cylinder head. A type which extends adjacent to (6) and which is connected via a supply line (11, 12, 13) to an intake line of said cylinder head (6) having a valve for controlling gas exchange. The container (8) and / or the supply line (11,1)
2. An intake device for an internal combustion engine, characterized in that a device (21) for attenuating surface emissions is provided in (2, 13). 2. The device (21) has one or more inner walls (22), and the inner wall (22) has through holes (2).
The intake device for an internal combustion engine according to claim 1, wherein (3) is provided. 3. The supply line (11, 12, 13) of the container (8) as an insert (25, 26, 27), wherein the device (21) has a tube section. The intake device according to claim 1, wherein the intake device is formed in the inside. 4. An air intake device for an internal combustion engine, comprising an array of cylinders located opposite each other and two containers connected via a connecting line, said insert being an insertion member.
4. The intake device as claimed in claim 1, wherein a suction line is inserted into the connection line. 5. The insertion member (25, 26, 27, 3)
2, 3) is in contact with said supply line (11, 12, 13) or said coupling line (9, 10).
Or the air intake apparatus according to 4. 6. The insertion member (25, 26, 27, 3)
2, 3) are inserted into the supply lines (11, 12, 13) or the connection lines (9, 10), for example, forming a small intermediate chamber (ZR). An air intake device according to any one of the preceding claims. 7. An air-intake device according to claim 2, wherein at least one inner wall of the device extends between the container walls facing each other. . 8. A container having a plurality of container walls extending substantially parallel to each other in the vertical direction, and the container walls (eg, 14 and 15).
8. The intake device according to claim 2, wherein the inner wall (22) of the device (21) extends at an angle. 9. The apparatus according to claim 1, further comprising a plurality of container walls extending substantially in parallel and in a horizontal direction, wherein said inner wall (2) of said device (21) is provided.
9. The intake device according to claim 1, wherein 2) extends over the entire height (HB) of the container (8). 10. The intake device according to claim 2, wherein the through-hole (23) is arranged in the device (21) as a kind of perforation (24). 11. The intake air according to claim 1, wherein the device (21) is provided with through holes (23) having different diameters (DI> DII). apparatus. 12. The device (21) has an insert (36, 37) made of an absorbent material, which insert (36, 37) is arranged in the container interior (20) of the container (8). The intake device according to claim 1, wherein: 13. The suction device according to claim 1, wherein the inserts (36, 37) are mounted on mutually facing container walls (16, 17). 14. The intake device according to claim 12, wherein a ceramic or foam material or the like is used as an absorbent material for the inserts (36, 37). 15. The device according to claim 1, wherein the inner wall of the device extends at a relatively small distance parallel to one of the container walls. The intake device according to claim 1. 16. The inner wall (43) of the device (21)
15. The air intake device according to claim 14, wherein a reflection chamber (44) is formed between the container and the container wall (19). 17. The inner wall (43) of the device (21)
17. The intake device according to claim 1, wherein an insert (45) is provided between the container wall (19) and the container wall (19). 18. The container (8) is provided with the inflow passage (3, 3).
Compensation room (47, 48, 49, 50) adjacent to (4, 5)
18. The intake device according to claim 1, wherein the at least one device (21) is provided in the compensation chamber (47, 48, 49, 50). 19. The compensation chamber (47, 48, 49, 5)
0) is the supply line (11,12,1) of the container (8).
19. The intake device according to claim 18, which is incorporated in 3).