JP2000087765A - Throttle valve tubing for controlling the output of an internal combustion engine and method for regulating the leakage air of a throttle valve tubing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce air leakage when the throttle valve is closed by locating the rotating axis line to the outside of the plane defined by the valve peripheral surface, and constituting the gas passage wall to have a throttle area in the valve peripheral surface with respect to the pivoting throttle valve at the closing position. SOLUTION: A throttle valve pipe piece 2 is provided with a throttle valve 6 rotatively supported by a throttle valve shaft 10 located at the outside of the plane defined by a valve peripheral surface 26 of the throttle valve 6 within a throttle valve casing 4. A gas passage wall 18 as an inner wall surface of the casing 4 is provided with a throttle area 20. A gas passage 16 is divided into two sections, the upper portion of which is an upper area (diameter: D) 22 and the lower portion of which is a lower area (diameter: d) 24. The diameter d of the lower area 24 is smaller than that of the area of the valve peripheral surface 26. The diameter D of the upper area is larger than that of the area of the valve peripheral surface 26. This construction may reduce the amount of air leakage when the valve is closed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a throttle valve pipe for controlling the output of an internal combustion engine, which is provided with a throttle valve casing and a gas passage located in the throttle valve casing. A gas passage wall of the gas passage is provided, and a throttle valve rotatably supported around a rotation axis is provided in the throttle valve casing, and the throttle valve has a valve peripheral surface. And a type in which the throttle valve can pivot to a closed position. Further, the present invention is a method for adjusting the leak air of a throttle valve pipe, wherein the throttle valve pipe is provided with a throttle valve casing, and a gas passage located in the throttle valve casing is provided. A gas passage wall of the gas passage, and a throttle valve rotatably supported around a rotation axis in the throttle valve casing. And a type in which the throttle valve can pivot to a closed position.

[0002]

2. Description of the Related Art There has long been a need to minimize the leakage of air when the throttle valve is in a closed position. Many proposals have been made for throttle valve stubs that attempt to solve this problem. However, in known embodiments, the problem of leaking air is not fully solved and / or attempts to keep the leaking air small have another serious disadvantage.

[0003] Published German Patent Application No. 1960
Japanese Patent No. 3547 proposes that a stopper surface is provided on a gas passage wall of a throttle valve casing, and the throttle valve is adapted to the stopper surface by plastic deformation. However, such plastic deformation cannot be performed with any material. The throttle valve will return even if heat is applied. A further disadvantage is the difficulty in manufacturing stop faces of the throttle valve casing which are oriented in different directions. A serious disadvantage is that when adjusting the throttle valve, as soon as the throttle valve moves away from the stop surface, the amount of flowing air increases sharply, which in such embodiments fine-tunes the output of the internal combustion engine. Is not possible. Since the internal combustion engine is operated very frequently in the idling range, such rapid power control in the idling range is very disadvantageous.

[0004] Published German Patent Application No. 4305
In the device described in document 123 as well, the amount of air flowing in the region of the closed position of the throttle valve changes rapidly due to the stop surface. Therefore, such devices cannot also be used to control the amount of air supplied to the internal combustion engine,
It is used in exhaust gas passages of internal combustion engines where fine metering of the gas stream is not important. A further disadvantage is that the device cannot be used due to vibrations in the region of the internal combustion engine. This is because for this purpose the positioning of the throttle valve shaft cannot be guaranteed sufficiently permanently. Due to the very high demand for low leakage air, it is also important that the leakage air flows through the penetration area of the throttle valve shaft, as can occur in such a configuration.

[0005] Published German Patent Application No. 1962
No. 6,920 describes a means in which a throttle valve floatingly held at a predetermined circumference is fitted to a gas passage wall. In this case, however, it is necessary to manufacture the throttle valve and the throttle valve shaft very accurately in these connection areas and to reduce dimensional errors. A further disadvantage is that additional undesirable air leaks can occur in the connection area between the throttle valve and the throttle valve shaft. The measure proposed here has the further disadvantage that the shaft end cannot be supported sufficiently reliably. This can cause malfunctions due to the operating moment required to adjust the throttle valve.

[0006] Published German Patent Application No. 1951
In the embodiment shown in 6927, the gap at the peripheral surface of the throttle valve is reduced by an expansion element. However, such a measure has the disadvantage that it is very time-consuming to manufacture, and when the gas passage is closed, the expansion member abuts against the gas passage wall, thereby adjusting the throttle valve. To do so, a large torque is required. A further disadvantage is that in the region of the throttle valve shaft, a very large amount of leaking air can flow through the gas passage. Furthermore, the durability may not be guaranteed.

[0007] In order to reduce the leakage air inside the throttle valve pipe piece provided with the throttle valve, in addition to the leakage air flowing from the gap between the peripheral surface of the throttle valve and the throttle valve casing, the throttle valve Leakage air flowing internally in the area of the shaft must also be considered. German Patent Application Publication No. 1
U.S. Pat. No. 5,912,874 and DE-A-422 22 0022 propose various measures for reducing the air leakage in the region of the throttle valve shaft. However, the cost of the means described here is very high, and despite such high costs, relatively high leakage air is expected.

To compensate for shape and dimensional errors,
Many proposals have already been made to provide an elastic seal member on the gas passage wall of the throttle valve casing with which the throttle valve abuts in the closed position. However, measures of this type have the disadvantage that in the region of the closed position, precise adjustment of the power of the internal combustion engine is not possible. This is because the gap of the throttle valve changes abruptly during the adjustment movement of the throttle valve, and furthermore, the angle at which the throttle valve contacts the elastic sealing member depends on the pressure and the use of the throttle valve tube. This is because it changes according to the period.

[0009]

SUMMARY OF THE INVENTION It is an object of the present invention to improve a throttle valve tubing of the type described at the outset to reduce the cost of the throttle valve tubing with less air leakage when the throttle valve is in the closed position. To provide

[0010]

SUMMARY OF THE INVENTION In order to solve this problem, according to the configuration of the present invention, the rotation axis is located substantially outside the plane formed by the valve peripheral surface, and is rotated to the closed position. With respect to the throttle valve, the gas passage wall has a narrow region in the region of the valve peripheral surface. In order to further solve the above-mentioned problem, according to the method of the present invention, the gas passage wall has a narrow region in the region of the valve peripheral surface with respect to the throttle valve swiveled to the closed position. In a first method step, the throttle valve is moved in the longitudinal direction of the gas passage in the direction of the smaller cross section until the throttle valve abuts the gas passage wall and the throttle valve assumes the straightened position, and then the second. In the method step, sliding is performed in the direction of the cross section that increases so as to be apart from the straightening position by a predetermined longitudinal distance, and in the third method step, the pivotable throttle valve is fixed to the throttle casing. I did it.

[0011]

The throttle valve tubing for controlling the output of an internal combustion engine and the method for adjusting the leakage air of a throttle valve tubing according to the invention reduce the time and effort required to produce the required individual parts and reduce the number of individual parts. This has the advantage of reducing the time and labor required for assembling the. Particularly advantageously, it is possible to produce a throttle valve with a particularly small amount of leaked air, while having a small production effort. Even more advantageously, components and materials that can be expected to have relatively large dimensional and shape errors can be used, while at the same time reducing the amount of leaking air. A further advantage is that the throttle valve can be securely and permanently firmly connected to the throttle valve shaft. More advantageously, the throttle valve can be adjusted so that the throttle valve does not contact the gas passage wall, so that a large friction can be avoided, and advantageously, the adjusting drive for adjusting the throttle valve is strongly designed. You don't have to. The throttle valve tubing can be manufactured such that when the throttle valve is in the closed position, there is a narrow gap that allows very little leakage air to pass through the entire circumference of the throttle valve. Such a narrow gap is advantageously
It is not interrupted even in the area of the throttle valve shaft.

[0012] It is furthermore advantageous to obtain a particularly simple air characteristic line in the idle range. In other words, in the region of the closed position of the throttle valve, the throttle valve piece can be formed in such a way that, when the throttle valve is adjusted, only a very small change in the amount of air takes place. This provides a particularly simple and comfortable idling control of the internal combustion engine.

By means of the dependent claims, claim 1
Advantageous configurations and improvements of a throttle valve stub for controlling the output of an internal combustion engine and a method for regulating leaking air according to claim 12 are obtained.

If the throttle valve shaft consists of two shaft members, at least one of which is connected to the throttle valve by plastic deformation of the throttle valve or the shaft member, the throttle valve, in particular the narrow leak air, After the gap has been adjusted, the advantage is obtained that the throttle valve can very easily be connected to the throttle valve shaft in this position. This ensures that the throttle valve is permanently maintained in this position.

The narrow area has a circular section, the center of which is advantageously formed in the middle of the gas passage on the axis of rotation of the throttle valve shaft. If there is very little air leakage,
The advantage is obtained that the amount of leaked air flowing in the range of idling control of the internal combustion engine can be particularly finely controlled.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of an embodiment of the present invention.

The throttle valve tube piece constituted according to the present invention can be used in an internal combustion engine that controls the output of the internal combustion engine by a gas flow supplied to the internal combustion engine. The gas is, for example, air or an air-fuel mixture. The internal combustion engine is, for example, an Otto engine having a suction passage provided with a throttle valve pipe piece. In internal combustion engines,
In addition to controlling the power provided by the throttle valve piece, there can be other means for controlling the power, for example by selectively controlling the amount of fuel injected directly into the internal combustion engine.

FIG. 1 shows a longitudinal section through an advantageously selected throttle valve tube of a particularly advantageous configuration, and FIG. 2 shows a cross section along the line II-II in FIG. The figure is shown. The cross-sectional view shown in FIG.
It is sectional drawing along the line.

In all the drawings, the same parts or parts having the same function are denoted by the same reference numerals. Unless otherwise stated or shown, the description and illustration given with reference to one drawing also applies to other embodiments. Unless otherwise stated in the description, the individual parts of the various embodiments can be combined with one another.

The throttle valve pipe 2 has a throttle valve casing 4, a throttle valve 6 and a throttle valve shaft 10. The throttle valve 6 is firmly connected to a throttle valve shaft 10. The throttle valve shaft 10 is divided into a shaft member 10.1 and a shaft member 10.2. The throttle valve casing 4 is provided with a bearing receiving hole 12.1 and a bearing receiving hole 12.2. The bearing 14.1 is located in the bearing receiving hole 12.1 and the bearing 14.2 is located in the bearing receiving hole 12.2. The bearings 14.1 and 14.2 are, for example, plain bearings or rolling bearings. The bearing receiving holes 12.1 and 12.2 correspond to the throttle valve shaft 1 in the throttle valve casing 4.
Acts as a bearing opening for bearing 0.

A gas passage 16 extends from one end face of the throttle valve casing 4 to the other end face. The gas passage 16 is circumferentially limited by a gas passage wall 18. The bearing receiving holes 12.1 and 12.2 are located opposite one another in the throttle valve housing 4 and open into the gas passage 16.

The gas passage 16 or the gas passage wall 18 has a narrow region 20. With reference to FIG.
6 has an upper region 22 above the narrow region 20;
A lower region 24 is located below the narrow region 20.
The upper region 22 has a diameter D. The lower region 24 has a diameter d. Looking at the vertical sectional view of the gas passage 16,
The narrow region 20 between the upper region 22 and the lower region 24
More or less continuously narrowing gradually. The throttle valve 6 has a valve peripheral surface 26. The diameter d of the lower region 24 is smaller than the diameter of the throttle valve 6 in the region of the valve peripheral surface 26, and the diameter D of the upper region 22 is larger than the diameter of the throttle valve 6 in the valve peripheral surface 26. The free cross section of the gas passage 16 and the cross section of the throttle valve 6 are not necessarily circular, but may be, for example, elliptical or oval. Upper region 22 and / or lower region 24 may be, for example, cylindrical (see FIG. 1) or conical. The throttle valve tubing 2 does not have to be spatially oriented as shown, but can be used with any rotation. For example, the area described here as the upper area 22 may be located below the throttle valve 6.

The throttle valve 6 has a closed position. In the closed position, the free cross section of the gas passage 16 is almost completely closed up to a slight leak air inside. When the throttle valve 6 is located in the closed position, it is located as shown.

When the throttle valve 6 is in the closed position, the valve peripheral surface 26 is in a narrow region 20 of the gas passage wall 18.
It is located in. In the closed position with the throttle valve 6 correctly assembled, there is an extremely narrow annular gap 30 between the valve peripheral surface 26 of the throttle valve 6 and the narrow region 20 of the gas passage 18.

The throttle valve 6 has a web 32 integrally formed on its end face. The web 32 and the throttle valve 6 are integrally formed of plastic. The web 32 has the same length as the diameter of the throttle valve 6. In the present invention, since the web 32 containing the throttle valve shaft 10 is located outside the area to be sealed, the web 32 may be significantly shorter than the diameter of the throttle valve 6. In this case, this does not undesirably worsen the leak air rate. Web 32
Is somewhat shorter than the diameter of the throttle valve 6,
The risk of catching between the throttle valve 6 and the throttle valve casing 4 is reduced.

A hole 34 extends through the web 32. This hole 34 is preferably cast at the same time as the throttle valve 6 is injection-moulded. This hole 34 has a radially outwardly drilled hole 34.1 and a radially outwardly drilled hole 34.2 located at the other end on the opposite side. have. These holes 34.1 and 34.
The hole 34 having two has, for example, a constant diameter over its entire length.

The shaft members 10.1 and 10.2 are respectively
The throttle valve 6 has an end projecting into the hole 34. The end of the shaft member 10.1 protruding into the hole 34.1 is hereinafter referred to as an introduction area 10.1e, and the shaft member 10.2
The end projecting into the hole 34.2 is hereinafter referred to as the introduction area 1
0.2e. The molding section 3 is located in the introduction area 10.1e.
6 are provided. In the illustrated embodiment, the formed portion is a knurl formed crosswise on the surface of the shaft member 10.1. Thus, the molded portion 36 has a convex portion and a concave portion. The top of the protrusion is located on a diameter larger than the diameter of the hole 34.1, and the lowest part of the recess of the molded portion 36 is located on a diameter smaller than the diameter of the hole 34.1.

In the throttle valve piece of the present application, the material of the throttle valve 6, preferably plastics, is in the region in which the shaft member 10.1 is pushed into the hole 34.1, in which the hole 34.1 is pushed. If appropriate measures are taken to be flexible enough to deflect the shaft member 10.1 into the interior, the introduction region 1 of the shaft member 10.1
0.1e can be pushed into the hole 34.1. The concave portion of the molded portion 36 allows the material of the throttle valve 6 pushed away from the convex portion of the molded portion 36 to flow into the concave portion. After the material of the throttle valve 6 has flowed in and re-tightened due to the projections of the molding 36, the shaft member 10.1 is very firmly and permanently connected to the throttle valve 6 reliably.

The two introduction areas 10.1e and 10.2e have substantially the same shape, and the two shaft members 10.1 and 10.2 are similarly firmly connected to the throttle valve 6. Thus, the throttle valve 6 and the two shaft members 10.1 and 1
A solid connection is formed between 0.2 and 0.2. In this case, the rigidity and durability of the throttle valve shaft 10 composed of the two shaft members 10.1 and 10.2 are almost the same as the rigidity and durability of the consistently used throttle valve shaft used so far. .

FIG. 3 shows the throttle valve pipe piece 2 together with an assembling device for assembling.

The following method is proposed for assembling the throttle valve tube piece 2. First, the throttle valve casing 4 is placed in the region 24 having a small diameter d.
Is placed downward on a horizontal straightening plate 42 with
Fix here. Next, the throttle valve 6 is inserted into the gas passage 16. In this case, the web 32 of the throttle valve 6 is directed upward. At first, the lower end face of the throttle valve 6 opposite to the web 32 is slidable in the height direction by the plunger 44.
Gas passage 16 until it abuts the horizontally oriented top surface.
Run inside.

The throttle valve 6 satisfactorily rests against the upper surface of the plunger 44 by means of an advantageously formed holding device 46. In the embodiment shown, the holding device 4
Reference numeral 6 has a negative pressure chamber 46a and a negative pressure connection portion 46b.
The holding device 46 can be switched on or off by connecting the negative pressure chamber 46a to the atmospheric pressure or a chamber having a low pressure as needed.

The plunger 44, together with the throttle valve 6 held by the plunger 44 based on the negative pressure in the negative pressure chamber 46a, and the valve peripheral surface 2 of the throttle valve 6
6 is shifted downward until it abuts a narrow region 20 of the gas passage wall 18. The plunger 44 is mounted so that it can slide very slightly in the radial direction. As a result, the throttle valve 6 is centered in the horizontal direction, so that the throttle valve 6 uniformly contacts the narrow region 20 of the gas passage wall 18 on the peripheral surface. As a result, the throttle valve 6 is located at a position described below as a straightening position. For example, plunger 44
Can be measured very accurately when the throttle valve 6 has reached the straightened position. After the throttle valve 6 reaches the straightened position, the movement direction of the plunger 44 is reversed, and the plunger 44
Is operated upwards by a small predefined distance. In this case, the valve peripheral surface 26 is lifted from the narrow region 20 and a gap 30 is created. Since the throttle valve 6 can be operated exactly upward by a predetermined distance by the plunger 44, the gap 3
0 can be adjusted to a precisely defined value. While the plunger 44 is moving upwards and then assembling the throttle valve shaft 10, the radial movement of the plunger 44 is locked, and the throttle valve 6 is moved by the holding device 46 to the plunger 44.
The position is fixed. Thereby, the gap 3 in the circumferential direction
A uniform height of 0 is guaranteed.

Adjustment of the height of the gap 30 can also be performed by monitoring the air flow through the gap 30, provided that the pressure difference between the lower side and the upper side of the throttle valve 6 is taken into account. .

While the throttle valve 6 is held at a position where the gap 30 has a desired gap height by the plunger 44, the shaft members 10.1 and 10.2 are externally brought into the bearing receiving holes 12.1, 2.11. 12.2 is inserted through. In this case, the introduction areas 10.1e, 10.2e of the shaft members 10.1, 10.2 are pushed into the holes 34.1 or 34.2 of the throttle valve 6 from both sides. The shaft members 10.1, 1
In the area of contact with 0.2, the material of the throttle valve 6 is softened until the shaft members 10.1, 10.2 can be pushed. After the shaft members 10.1, 10.2 have been pushed into the bores 34, the material of the throttle valve 6 is cooled again, so that it regains its original strength and shape stability. The vacuum chamber 46a of the holding device 46 is then connected to the surrounding air, so that the plunger can leave the throttle valve 6 without problems.

The shaft members 10.1 and 10.2 have different diameters, the holes 34.1 and 34.2 and the bearings 14.1.
If the inner diameters 1 and 14.2 are adapted to the different diameters of the shaft members 10.1 and 10.2, then both shaft members 10.1
And 10.2 can also be inserted from the same side. In this case, the shaft member with the smaller diameter is inserted first. Since such a modification of the embodiment can easily be made, an additional illustration of this variant embodiment is omitted.

While the plunger 44 holds the throttle valve 6 in a precisely set position, the shaft members 10.1,
The height of the gap 30 remains accurate even after the plunger 44 has been removed, since 10.2 is firmly and permanently connected to the throttle valve 6.

The throttle valve 6 is relatively thin in the region of the valve peripheral surface 26. Therefore, one plane on which the valve peripheral surface 26 is located can be assumed. Alternatively, the throttle valve 6 forms one plane in the region of the valve peripheral surface 26.
A throttle valve shaft 10 having shaft members 10.1 and 10.2 is pivotally mounted in the throttle valve housing 4 via bearings 14.1 and 14.2. With such a support, the throttle valve shaft 10 maintains the rotation axis 40, about which the throttle valve shaft 10 can rotate or pivot with the throttle valve 6. This rotation axis 40 is
It is clearly at a distance from said plane formed by the valve peripheral surface 26. The distance between the rotation axis 40 and the plane formed by the valve peripheral surface 26 is greater than the thickness of the throttle valve 6 in the region of the valve peripheral surface 26.

The shaft member 10.1 has a diameter D10 where it penetrates the gas passage wall 18 (see FIG. 2). In order to avoid leaking air surrounding the throttle valve shaft 10 in the region of the throttle valve shaft 10 penetrating the gas passage wall 18, the distance between the rotation axis 40 and the plane of the valve peripheral surface 26 must be at least equal to the valve circumference. It is proposed that the surface 26 be chosen large enough to be able to extend over the entire circumference of the throttle valve 6 without being interrupted by the throttle valve shaft 10. The spacing between the axis of rotation 40 and the plane formed by the valve peripheral surface 26 is therefore preferably at least slightly larger than half the diameter D10 of the shaft member 10.1. Or shaft member 1
When the diameter of 0.2 is larger than the diameter of the shaft member 10.1, it is preferable that the diameter of the shaft member be larger than half of the diameter of the shaft member 10.2.

The fact that the rotation axis 40 is spaced perpendicular to the plane in which the valve peripheral surface 26 is located also allows the throttle valve 6 to contact the gas passage wall 18 despite the particularly narrow gap 30. Without the plunger 44 being removed, it can be swiveled or rotated.

The slope of the constricted area 20 is advantageously the tangent of an imaginary circle that rotates about the axis of rotation 40 when viewed in the cross-sectional view of FIG. In the embodiment shown, the constricted area 20 is funnel-shaped, in which case the constricted area 20 extends conically or substantially conically and has the shape of a truncated cone or conical section.

Unlike the embodiment shown, the narrow region 20 can be formed in the shape of a circular section. In this case, the center point of the circular section is advantageously located in the middle of the gas channel 16 on the axis of rotation 40 or at the intersection of the axis of rotation 40 and the longitudinal axis of the gas channel 16. In this embodiment, there is no bent portion at the transition from the narrow region 20 to the upper region 22 of the gas passage wall 18, and the narrow region 20 is tangential to the gas passage wall 1.
8 to the upper region 22. Since such differences from the illustrated embodiment are slight, they are not additionally shown to omit unnecessary illustrations. Narrow area 20
To the imaginary circle about the axis of rotation 40, the gap 30 is initially changed only relatively slightly during the pivoting movement from the illustrated closed position. This has the advantage that, in the region of the closed position, the gap 30 can be changed very finely when the throttle valve 6 moves, so that the output of the internal combustion engine can be controlled very finely.

The desired height of the gap 30 in the closed position of the throttle valve 6 is advantageously adjusted independently of any possible dimensional, shape or diameter errors of the throttle valve 6 and the valve casing 4. can do. Unlike many proposals known hitherto, the gap 30 is not obtained by a particularly precise manufacture of the throttle valve 6 and the valve casing 4, but rather the height of the gap 30 in the throttle valve piece 2 according to the invention. Is adjusted to the desired dimensions by the prefabricated components. This has the advantage that the throttle valve 6 can be made, for example, of plastic and that the surface of the throttle valve 6 is not mechanically treated, in particular no cutting of the valve peripheral surface 26 is required.

According to the selected embodiment, the forming part 36 can be provided on the shaft members 10.1 and 10.2 of the throttle valve shaft 10. This molded part is connected to the throttle valve 6
Can be provided inside the hole 34. In such a case, it is advantageous to manufacture the shaft members 10.1, 10.2 from a material which softens at a lower temperature than the material of the throttle valve 6.

When the shaft members 10.1 and 10.2 are loaded with ultrasonic waves while the shaft members 10.1 and 10.2 are pushed into the holes 34, the introduction region 10.1 of the throttle valve shaft 10 is adjusted.
e, the material of the throttle valve 6 can be softened particularly easily at the point of contact with 10.2e. The shaft members 10.1, 10.2 and the holes 34.
Since a very small frictional motion occurs between 1,34.2,
The material of the throttle valve 6 is heated by the micro motion, and in the region of the micro motion, the throttle valve 6 is heated.
Is soft enough to push the shaft members 10.1 and 10.2 into the holes 34. Shaft member 10.
By loading 1,10.2 with ultrasound, the energy required for the softening of the material can be precisely metered and precisely brought to the desired location.

The valve peripheral surface 26 of the throttle valve 6 is formed in the shape of a cone, a truncated cone, or a circular section.
It is proposed to adapt to an angle of zero. This allows
The gap 30 is as long as possible in the flow direction, which makes it possible to achieve a particularly effective leakage flow reduction.

FIG. 4 shows a longitudinal section through a further advantageous embodiment. As shown in this example,
The throttle valve 6 does not necessarily have to be flat. In addition, FIG. 4 shows the throttle valve 6 in the fully opened state by a dash-dot line.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a throttle valve pipe piece.

FIG. 2 is a cross-sectional view of the throttle valve tube piece of the first embodiment in a plane of a rotation axis.

FIG. 3 is a vertical sectional view of a throttle valve tube piece shown together with an assembling device.

FIG. 4 is a longitudinal sectional view of a throttle valve tube piece of a second embodiment.

[Explanation of symbols]

2 Throttle valve tube piece, 4 Throttle valve casing, 6 Throttle valve, 10 Throttle valve shaft, 10.1, 10.2 Shaft member, 10.1
e, 10.2e introduction area, 12.1, 12.2 bearing accommodation hole, 14.1, 14.2 bearing, 16 gas passage, 18 gas passage wall, 20 narrow area, 22 upper area, 24 lower area, 26 Valve circumference, 3
0 gap, 32 webs, 34 holes, 34.
1,34.2 holes, 36 profiles, 40 axes of rotation, 42 straightening plates, 44 plungers, 4
6 Holding device, 46a pressure chamber, 46b pressure connection

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Uwe Hammer Inventor Mark Groningen Germany Papelweg 1

Claims (19)

[Claims] 1. A throttle valve tube for controlling the output of an internal combustion engine, wherein a throttle valve casing (4) is provided, and a gas passage (16) located in the throttle valve casing (4). The throttle valve is provided with a gas passage wall (18) of the gas passage (16), and is supported in the throttle valve casing (4) so as to be pivotable about a rotation axis (40). (6) is provided, wherein the throttle valve (6) has a valve peripheral surface (26), and the throttle valve (6) can turn to a closed position. (40) is substantially the valve peripheral surface (26).
With respect to the throttle valve (6), which is located outside the plane defined by and is pivoted into the closed position, said gas passage wall (18) defines a narrow region (20) in the region of the valve peripheral surface (26). A throttle valve piece for controlling an output of an internal combustion engine, comprising: 2. The gas passage (16) has a free cross section of different size in the longitudinal direction of the gas passage (16), said cross section being reduced by a narrowed area (20);
That is, when the throttle valve (6) moves in the longitudinal direction of the gas passage (16) in the direction of the smaller cross section, the valve peripheral surface (26) of the throttle valve (6) is in the straightened position and the gas passage wall ( 18), and the pivotable throttle valve (6) is separated from the straightened position by a predetermined longitudinal distance in the direction of the larger cross section in the state of being finally assembled. 2. The method of claim 1, wherein said method is supported.
The described throttle valve tube piece. 3. The throttle valve piece according to claim 1, wherein the valve peripheral surface (26) of the throttle valve (6) is adapted to a narrow region (20) of the gas passage wall (18). 4. A throttle valve (6) is pivotably mounted in a throttle valve casing (4) via a throttle valve shaft (10) having two shaft members (10.1, 10.2). And the two shaft members (1
4. Throttle valve stub according to claim 1, wherein at least one of the throttle valves (0.1, 10.2) is plastically assembled to the throttle valve (6). 5. At least one shaft member (10.1, 1
0.2) is the throttle valve radially from the outside (6)
The throttle valve pipe piece according to claim 4, which is attached to the throttle valve. 6. The throttle valve tube piece according to claim 4, wherein the plastic deformation is performed by an ultrasonic load. 7. Throttle valve (6) has at least one hole (34.1, 34.2) for receiving at least one shaft member (10.1, 10.2). , The shaft member (10.1, 10.2) is provided with an introduction area (1) for insertion into the hole (34.1, 34.2).
0.1e, 10.2e).
The throttle valve tube piece according to any one of the preceding claims. 8. At least a shaft member (10.1, 10..
Until the 2) is attached to the throttle valve (6), the introduction region (10.1e, 10.1e,
10.2e) a molded part (36) having a convex part and a concave part
The projections project radially beyond the diameter of the hole (34), and the recesses
8. The throttle valve stub according to claim 7, which is located inside a diameter of 4.1, 34.2). 9. At least a shaft member (10.1, 10..
Until 2) is attached to the throttle valve (6), the hole (34.1, 34.2) has a molded portion having a convex portion and a concave portion, and the convex portion has a shaft member ( 10.1,
9. Throttle valve element according to claim 7, which is located radially inward of the diameter of the inlet region (10.1e, 10.2e) of the throttle valve (10.2). 10. Throttle valve stub according to claim 1, wherein the narrow region (20) extends substantially conically. 11. Throttle valve tubing according to claim 1, wherein the narrow area (20) has a substantially circular section. 12. A method for adjusting the leakage air of a throttle valve tube, said throttle valve tube being provided with a throttle valve casing (4). Is provided with a gas passage (16) located in the gas passage (1).
6) a gas passage wall (18) is provided, and a throttle valve (6) rotatably supported about a rotation axis (40) is provided in the throttle valve casing (4); In a type in which the throttle valve (6) has a valve peripheral surface (26) and the throttle valve (6) can pivot to a closed position, the gas passage wall (18) pivots to a closed position. With regard to the throttle valve (6) provided, it has a narrow area (20) in the area of the valve peripheral surface (26), and in a first method step, the throttle valve (6) is In the longitudinal direction of the passage, in the direction of the decreasing cross section, the throttle valve (6) is fitted with a gas passage wall (18).
And move the throttle valve (6) until it assumes a straightened position, and then in a second method step slide in the direction of the cross-section which increases to a predetermined longitudinal distance from said straightened position. A method for regulating the leakage air of a throttle valve piece, characterized in that, in a third method step, a pivotable throttle valve (6) is fixed to a throttle casing (4). 13. The method according to claim 12, wherein the axis of rotation (40) of the throttle valve (6) is located outside a plane formed by the valve peripheral surface (26). 14. Throttle valve (6) is connected to a throttle valve casing (4) via a throttle valve shaft (10) having two shaft members (10.1, 10.2).
In a third method step at least one of the two shaft members (10.1, 10.2).
14. The method as claimed in claim 12, wherein one is attached to the throttle valve (6) by plastic deformation. 15. At least one shaft member (10.1,
15. The method according to claim 14, wherein (10.2) is mounted on the throttle valve (6) radially from the outside. 16. The plastic deformation is applied in a mounting direction of at least one shaft member (10.1, 10.2),
At least one shaft member (10.1, 10.2) and / or
Alternatively, the throttle valve (6) is connected to the throttle valve (6) and / or at least one shaft member (10.1,
16. The method according to claim 14 or 15, wherein step 10.2) is performed by loading with energy which allows it to be deformed in the mounting area. 17. The method according to claim 16, wherein the throttle valve (6) and / or the at least one shaft element (10.1, 10.2) are ultrasonically loaded at the mounting area. 18. The method as claimed in claim 12, wherein the narrow area (20) extends conically. 19. The method according to claim 12, wherein the narrow region has a substantially circular section.
The method described in the section.