阅读说明：本技术 液力变矩器的定子、包括该定子的液力变矩器、以及车辆 (Stator of torque converter, torque converter including the stator, and vehicle ) 是由 孙艳霞 毕荣麟 殷英 王盛璋 于 2019-09-03 设计创作，主要内容包括：本公开涉及一种液力变矩器的定子,包括定子主体、定子带、设置在所述定子主体和所述定子带之间的多个定子叶片。定子主体具有平行于一中心轴线延伸的外圆周面,所述外圆周面上设置有用于安装所述定子叶片的沿周向分布的多组主体侧安装部,每组中的各主体侧安装部具有不同的定子叶片安装角度。由此,可以通过灵活地调整定子叶片的安装角度和/或定子叶片的数量来获得不同的液力变矩器性能。本公开还涉及一种液力变矩器,以及包括液力变矩器的车辆。(The present disclosure relates to a stator of a torque converter, including a stator body, a stator band, a plurality of stator blades disposed between the stator body and the stator band. The stator main part has the outer periphery that extends on a parallel with a central axis, be provided with on the outer periphery and be used for the installation stator blade's the multiunit main part side installation department that distributes along circumference, each main part side installation department in every group has different stator blade installation angle. Thereby, different torque converter performances can be obtained by flexibly adjusting the installation angle of the stator blades and/or the number of the stator blades. The disclosure also relates to a torque converter, and a vehicle comprising a torque converter.)

1. A stator (30) of a torque converter, comprising:

a stator main body (400),

a stator band (600), and

a plurality of stator vanes (500) disposed between the stator body (400) and the stator band (600),

the stator body (400) has an outer circumferential surface (410) extending parallel to a central axis (X), and a plurality of sets of circumferentially distributed body side mounting portions (421, 422, 423; 421 ', 422 ', 423 ') for mounting the stator vanes (500) are arranged on the outer circumferential surface, wherein each body side mounting portion in each set has a different stator vane mounting angle.

2. The stator according to claim 1, wherein the stator vane (500) has a radially inner mounting portion (521) corresponding to the main body side mounting portion (421, 422, 423; 421 ', 422 ', 423 ').

3. The stator according to claim 1, wherein adjacent body-side mounting portions (421, 422, 423) in each group have the same angular difference.

4. The stator as claimed in claim 1, wherein each of the body side mounting portions (421 ', 422 ', 423 ') includes a plurality of recesses (4211, 4212; 4221, 4222; 4231, 4232) spaced apart, the radially inner mounting portion (521) having a plurality of corresponding protrusions (5211, 5212).

5. The stator as claimed in claim 4, wherein each of the body side mounting portions includes first and second recesses (4211, 4221, 4231, 4212, 4222, 4232) spaced apart from each other, the radially inner mounting portion (521) having corresponding first and second protrusions (5211, 5212).

6. The stator of claim 5, wherein the first recess is an oblong recess, the second recess is a circular recess, the first protrusion is an oblong protrusion and the second protrusion is a circular protrusion.

7. A stator according to any of claims 1-6, wherein the stator vane (500) is provided with one radially outer mounting (571) on the side (560) opposite to the main body side mounting for mounting the stator band (600) provided with a respective stator band side mounting (611, 621).

8. The stator according to claim 7, wherein the number of the stator band-side mounting portions is the same as the number of the sets of the main body side mounting portions.

9. The stator of claim 7, wherein the radially outer mounting portion (571) is a staking head and the stator sub-side mounting portion is a staking hole.

10. A hydrodynamic torque converter as claimed in claim 7, wherein said stator band has two discrete segments (610, 620).

11. A torque converter including a stator as claimed in any one of the preceding claims.

12. A vehicle comprising a torque converter as recited in claim 11.

Technical Field

The present disclosure relates to a stator of a torque converter, to a torque converter including the stator, and to a vehicle including the torque converter.

Background

In general, a torque converter is provided between an engine and a transmission of an automatically shifting motor vehicle. The torque converter transfers power of the engine to the transmission through a fluid (usually oil). The torque converter may include a housing that receives torque from the engine, an impeller fixedly connected to the housing so as to be rotatable therewith, a turbine connected to the transmission input shaft and driven by the impeller, and a stationary stator. When fluid circulates between the impeller and the turbine, the fluid flowing out of the impeller impacts the blades of the turbine to drive the turbine to rotate, and the fluid flowing out of the vortex impacts the blades of the stator and is redirected back to the impeller to continue to participate in the fluid circulation. The torque output by the turbine is therefore different from the torque input by the pump impeller, and the torque conversion function of the hydraulic torque converter is realized.

The hydrodynamic performance of a torque converter is typically related to the design of the stator. For example, the inlet angle of the stator vanes is one of the factors that affects hydraulic performance. Different torque ratios may be achieved at different inlet angles.

In one known solution, the stator is generally formed as one piece by casting, i.e. the stator body, the stator blades, etc. are integral in each part. In this case, the installation angle of the stator vanes is fixed with respect to the stator main body, and the number of the stator vanes cannot be changed.

In another known solution, the stator blades are manufactured separately from the stator body and are then riveted to the stator body. However, in this solution, the installation angle of the stator vanes cannot be adjusted either, and when other angles of the stator vanes are desired, the stator can only be redesigned and manufactured.

Therefore, in the above solutions, when it is desired to adjust the performance of the torque converter by adjusting the installation manner of the stator vanes, particularly in the early stages of product development, it is necessary to manufacture the corresponding stator according to specific and different parameters. Stators, and in particular stator vanes, are relatively expensive, and the way in which the different stators are manufactured according to various parameters presents the disadvantages of high costs and long development cycles.

In a further known solution, each stator vane is provided with a pivot shaft dedicated to pivoting it, and with dedicated pivoting actuation means, comprising an actuation piston, a structurally complex spring, etc. In this solution, a very complex structure is provided in a limited space, the number of parts is large, and the operation is also complex.

Disclosure of Invention

Accordingly, the present disclosure aims to provide a stator having a flexible arrangement scheme in which a stator body, stator blades, and a stator band are all independent parts from each other to solve the above-described problems.

This object is achieved by a stator of a hydrodynamic torque converter according to the present disclosure, comprising: a stator body, a stator band, and a plurality of stator vanes disposed between the stator body and the stator band; the stator body is provided with an outer circumferential surface extending parallel to a central axis, a plurality of groups of body side installation parts distributed along the circumferential direction and used for installing the stator blades are arranged on the outer circumferential surface, and each body side installation part in each group has different stator blade installation angles.

This arrangement makes the installation angle of the stator vanes with respect to the stator body adjustable. This is advantageous, especially in the early stages of product development. The stator vanes are expensive to manufacture. In the technical scheme of the present disclosure, the stator blades can be manufactured in batches according to a unified standard, and the possible multiple installation angles of the stator blades on the stator main body are realized through multiple settings of the main body side installation part on the stator main body. Thus, when installed, only the required installation angle needs to be selected, and when it is desired to change the torque ratio of the torque converter, another installation angle needs to be selected. Such an arrangement is very flexible, avoids the high cost of redesigning and manufacturing stators with different stator vane mounting angles to achieve different torque ratios, and significantly reduces development and manufacturing cycles. Moreover, the number of stator vanes may also be adjusted as desired.

Stators according to the present disclosure may also have one or more of the following features, either alone or in combination.

According to an embodiment of the present disclosure, the stator vane has a radially inner mounting portion corresponding to the main body side mounting portion.

According to one embodiment of the present disclosure, adjacent main body side mounting portions in each group have the same angular difference. Such uniform division of the stator blade installation angle interval is very advantageous for studying the influence of the stator blade installation angle on the torque ratio of the torque converter, and can obtain the stator blade installation angle range with the desired torque ratio in a fast and reliable manner, and shorten the development period.

According to one embodiment of the present disclosure, each body side mounting portion includes a plurality of recesses spaced apart, and the radially inner mounting portion has a plurality of corresponding protrusions. This arrangement enables the stator body to be mounted with the stator vanes by a simple plug-in operation.

According to an embodiment of the present disclosure, each of the body side mounting portions includes first and second recesses spaced apart from each other, and the radially inner mounting portion has corresponding first and second protrusions. The body side mounting portion including a plurality of recesses and the radially inner mounting portion of the stator vane including a corresponding plurality of protrusions may improve the overall strength of the assembled stator.

According to an embodiment of the present disclosure, the first recess is an oblong recess, the second recess is a circular recess, the first protrusion is an oblong protrusion and the second protrusion is a circular protrusion. Such an arrangement may take advantage of the limited space on the stator vanes to stiffen the overall strength of the structure as much as possible.

According to an embodiment of the present disclosure, the stator vane is provided with a radially outer mounting portion for mounting the stator band provided with a corresponding stator band side mounting portion on a side opposite to the main body side mounting portion. The stator band is a separate component from the stator vanes and stator body and can be manufactured separately.

According to an embodiment of the present disclosure, the number of the stator band-side mounting portions is the same as the number of the sets of the main body side mounting portions. This arrangement makes it possible, when it is desired to change the torque ratio of the torque converter, to mount the stator vanes in the other main body side mounting portion having the same stator vane mounting angle, at which time the stator band only needs to be displaced in the circumferential direction, for example, advanced by a small angle in the circumferential direction, so that the stator band side mounting portions of the stator band are mounted in alignment with the radially outer side mounting portions of the stator vanes in the respective main body side mounting portions, without redesigning and manufacturing a new specification of the stator band. Therefore, the stator belt can be manufactured according to the uniform specification, and the cost and the development period are saved.

Further, in the technical solution of the present disclosure, in the case where the same stator main body, the same form of stator blade, and the same stator band are used, different torque ratios of the torque converter are realized by adjusting the number of stator blades. This provides significant savings in manufacturing and development costs and cycle time.

According to one embodiment of the present disclosure, the radially outer mounting portion is a rivet head, and the stator band side mounting portion is a rivet hole. Such an arrangement enables simple and low cost mounting between the components.

According to one embodiment of the present disclosure, the stator band has two discrete sections. Therefore, the two sections can be installed respectively, and the operation is simple.

The disclosure also relates to a torque converter comprising a stator as described above.

The disclosure further relates to a vehicle comprising the aforementioned torque converter.

Drawings

FIG. 1 is a partial schematic cross-sectional view of a torque converter taken along a center axis for schematically illustrating a basic structure of the torque converter;

FIG. 2 is a schematic perspective view of a stator according to an embodiment of the invention;

fig. 3A is a partially enlarged view of a stator body according to a first embodiment of the present invention;

FIG. 3B is a perspective view of a stator vane according to the first embodiment of the present invention, particularly showing the portion engaged with the stator body;

fig. 4A is a partially enlarged view of a stator body according to a second embodiment of the present invention;

FIG. 4B is a perspective view of a stator vane according to a second embodiment of the present invention, particularly illustrating the portion engaged with the stator body;

FIG. 5 is a perspective view of a stator vane according to a second embodiment of the present invention, showing the portions engaged with the stator band;

FIGS. 6 and 7 are perspective and top views, respectively, showing stator vanes mounted on a stator body at different angles;

FIG. 8 is a schematic perspective view of the stator body with the stator band separated from the remainder of the stator;

fig. 9 is a schematic perspective view of a stator having a different number of stator vanes.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described below in detail and completely with reference to the accompanying drawings of the embodiments of the present disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the terms "a" and "an" or "the" and similar referents in the description and claims of the present disclosure also do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item preceding the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. "axial" and "radial" directions, etc., are defined relative to the axis of rotation of the torque converter.

Fig. 1 shows a schematic cross-sectional view of a torque converter 1 having a central axis X to illustrate the basic structure of the torque converter. The torque converter 1 may be used for a motor vehicle. The cross section shown in fig. 1 is a cross section taken along the central axis X, that is, the central axis X is located in the cross section, and fig. 1 shows only a portion of the cross section where the torque converter 1 is located on the side of the central axis X.

The torque converter 1 may include a housing 90 that receives torque from the engine, for example, by a lug 91 fixedly provided on a radially outer side thereof, so that the housing 90 can rotate about the center axis X. The torque converter 1 may further include a pump impeller 10, a turbine runner 20, and a stator 30 disposed between the pump impeller 10 and the turbine runner 20 in the direction of the central axis X and located.

The pump impeller 10 may be fixedly connected with the housing 90 such that when the housing 90 rotates, the pump impeller 10 rotates therewith. The impeller 10 and the turbine 20 are each provided with a plurality of blades and together constitute an annular inner cavity about a central axis X for the circulation of a fluid. The arrows in fig. 1 schematically show the path of the fluid circulating in the annular cavity in this section. When the impeller 10 rotates, fluid flows out of the impeller 10 and impacts blades of the turbine 20 due to centrifugal action, so that the turbine 20 rotates. The fluid flowing from the turbine 20 impinges on the blades of the stator 30 and is thereby redirected, the fluid then returns to the impeller 10 and impinges on the blades of the impeller 10, the fluid thereby continuously circulating, changing the torque output by the turbine 10. Turbine 20 may be fixedly coupled to an output hub 21 to output torque to an input shaft (not shown) of the transmission.

A stator 30 according to the present disclosure is described below with reference to fig. 2-8.

Fig. 2 shows a perspective view of the stator 30. The stator 30 may include a stator body 400, and the stator body 400 may be integrally formed by casting. The stator body 400 may have an outer circumferential surface 410 extending parallel to the central axis X.

The stator 30 may include a stator band 600, the stator band 600 extending about the central axis X and being generally annular. The stator 30 may further include a plurality of stator vanes 500 disposed between the stator body 400 and the stator band 600.

A stator according to a first embodiment of the present disclosure is explained below with reference to fig. 3A and 3B. Fig. 3A is a partially enlarged schematic view of the stator body 400, which shows only a portion of the outer circumferential surface 410 of the stator body 400. As shown in fig. 3A, the outer circumferential surface 410 is provided with a plurality of sets of body-side mounting portions 421, 422, 423 distributed in the circumferential direction for mounting the stator vanes 500. Specifically, the main body side mounting portions are divided into a plurality of groups. In the example shown in fig. 3A, three adjacent main body side mounting portions 421, 422, and 423 are divided into a group 420. Then, the body-side mounting parts of the plurality of groups 420 are distributed in the circumferential direction of the stator body 400, and each group 420 may include three body-side mounting parts 421, 422, and 423.

The number of sets of the main body side mounting portions may be set in advance. Each group may occupy the same circumferential angle, that is, the groups 420 including the body-side mounting portions 421, 422, and 423 may be evenly distributed in the circumferential direction. For example, in the example shown in fig. 2, 26 sets of main body side mounting portions are provided on the outer circumferential surface 410 of the stator main body 400, each set occupying approximately 13.85 degrees of 360/26 degrees.

Only three sets 420 of body side mounting portions are shown in fig. 3A for illustration. The middle group 420 will now be described in detail by way of example. As described above, each set 420 may include three body side mounting portions 421, 422, and 423. As shown in fig. 3B, the stator vane 500 has a radially inner mounting portion 521 corresponding to the main body side mounting portions 421, 422, 423, disposed on a radially inner surface 510 of the stator vane 500 to engage with the main body side mounting portions 421, 422, 423. By radially inner surface is meant that the surface is oriented radially inwardly when the stator vane is mounted on the stator body.

In the embodiment shown in fig. 3A and 3B, the main body side mounting portions 421, 422, and 423 are concave portions that are recessed from the outer circumferential surface 410 of the stator main body 400. The recess may for example be a recess having an elongated form, such as an oblong recess. The elongated form of the recess may provide a certain stator vane mounting angle in the case where the main body side mounting portion has only one recess. The stator vane installation angle refers to an angle of the stator vane with respect to an axis that is located in the outer circumferential surface 410 and is parallel to the central axis X when the stator vane is installed. Specifically, referring to fig. 3A, there are shown three axes X1, X2, and X3, which are all parallel to the central axis X and located on the outer circumferential surface of the stator body 410, and respectively correspond to different body-side mounting portions in the same group 420. The main body side mounting portions 421, 422, 423 in each set 420 each have a mounting direction, shown in fig. 3A as L1, L2, and L3, respectively. The mounting directions L1, L2, and L3 of each of the main body-side mounting portions 421, 422, 423 are at angles α 1, α 2, and α 3, i.e., stator blade mounting angles, with respect to their respective axes X1, X2, and X3, respectively.

As shown in fig. 3B, the radially inner mounting portion 521 of the stator vane 500 may be a protrusion protruding from the radially inner surface 510 of the stator vane 500, and may be inserted into and engaged with any one of the main body side mounting portions 421, 422, 423.

The respective main body side mounting portions 421, 422, 423 in each set 420 have the same structure, but have different stator vane mounting angles,

that is, α 1, α 2, and α 3 are different from each other. The first main body side mounting portions 421 in each group 420 all have the same mounting angle α 1, the second main body side mounting portions 422 in each group 420 all have the same mounting angle α 2, and the third main body side mounting portions 423 in each group 420 all have the same mounting angle α 3.

When the plurality of stator vanes 500 are mounted on the stator body 400, the radially inner mounting portions 521 of the plurality of stator vanes 500 may be selectively engaged with the body-side mounting portions 421 having the same mounting angle α 1 in each group 420, or may be selectively engaged with the body-side mounting portions 422 having the same mounting angle α 2 in each group 420, or may be selectively engaged with the body-side mounting portions 423 having the same mounting angle α 3 in each group 420. Thereby obtaining different torque ratios.

This arrangement makes the installation angle of the stator vanes with respect to the stator body adjustable. This is advantageous, especially in the early stages of product development. The stator vanes are expensive to manufacture. In the technical scheme of the disclosure, the stator blades can be manufactured in batches according to the unified standard, and a plurality of possible installation angles of the stator blades on the stator main body are realized by a plurality of settings of the main body side installation part on the stator main body, so that when the stator blades are installed, only a required installation angle needs to be selected, and when the torque ratio of the hydraulic torque converter is expected to be changed, another installation angle needs to be selected. Such an arrangement is very flexible, avoids the high cost of redesigning and manufacturing stators with different stator vane mounting angles to achieve different torque ratios, and significantly reduces development and manufacturing cycles.

Further, the provision of the main body side mounting portion as a recess and the provision of the radially inner side mounting portion of the stator vane as a projection enable the mounting of the stator main body and the stator vane to be achieved by a simple plug-in operation.

Fig. 6 and 7 show the case where the stator vanes are mounted on the outer circumferential side 410 of the stator body 400. The cases where the stator vanes 500A, 500B, 500C are mounted to the stator body 400 with three different stator vane mounting angles α 1, α 2, α 3 are shown together in fig. 6 and 7 to compare and explain different mounting states, and do not represent that the three vanes 500A, 500B, 500C are mounted at the same time. The deflection of the stator blades in the same group 420 relative to each other, as well as the displacement in the circumferential direction, is evident from fig. 6 and 7.

Fig. 4A and 4B illustrate a stator body 400 'and a blade 500' according to a second embodiment of the present disclosure. In the second embodiment, a plurality of sets 420 ' of body-side mounting portions 421 ', 422 ', and 423 ' for mounting the stator vanes 500 ' are provided on the outer circumferential surface 410 ' of the stator body 400 '.

The difference from the first embodiment is that each of the main body side mounting portions 421 ', 422 ', and 423 ' may include a plurality of recesses spaced apart. As shown in fig. 4A, the body side mounting portion 421 ' includes first and second spaced apart concave portions 4211 and 4212, the body side mounting portion 422 ' includes first and second spaced apart concave portions 4221 and 4222, and the body side mounting portion 423 ' includes first and second spaced apart concave portions 4231 and 4232. The first concave portions 4211, 4221, 4231 of the respective main body side mounting portions in each set 420' have the same structure except for the mounting angle. The second concave portions 4212, 4222, 4232 of the respective body side mounting portions in each set 420' have the same structure except for the mounting angle. The main body side mounting portions have the same structure as a whole except for different mounting angles. That is, the relative arrangement of the first recess and the second recess is the same for each of the main body side mounting portions 421 ', 422 ', 423 ', and the main body side mounting portion constituted by one pair of the first recess and the second recess is different in mounting angle from the main body side mounting portion constituted by the other pair of the first recess and the second recess.

The stator vane 500' is shown in FIG. 4B. The stator vane 500 ' has a radially inner mounting portion 521 ' on a radially inner surface 510 ' thereof. The radially inner mounting portion 521' includes first protrusions 5211 corresponding to the first recesses 4211, 4221, and 4231 and first protrusions 5212 corresponding to the second recesses 4212, 4222, and 4232. In this case, the first and second protrusions 5211 and 5212 may be inserted into the first and second recesses of each of the body-side mounting portions 421 ', 422 ', 423 ' of each set 420 ', thereby mounting the stator vane 500 ' on the stator body.

The second embodiment shows only a case where one main body side mounting portion includes two recesses. One main body side mounting portion may include more recesses according to, for example, strength requirements. Providing a plurality of recesses can improve the overall strength of the assembled stator, as compared with the case where one main body side mounting portion includes one recess in the first embodiment.

Further, the first concavities 4211, 4221, and 4231 are oblong concavities, and the second concavities 4212, 4222, and 4232 are circular concavities. Accordingly, the first protrusion 5211 of the radially inner mounting portion 521 'of the stator vane 500' is an oblong protrusion, and the second protrusion 5212 is a circular protrusion to engage with the first and second recesses. Preferably, the oblong first protrusion 5211 is closer to the leading edge 511' of the stator vane than the circular second protrusion 5212, as shown in fig. 4B. Such an arrangement may take advantage of the limited space on the stator vanes to increase strength as much as possible. Specifically, the oblong first protrusion 5211 may be disposed on a thicker portion of the vane near the leading edge 511' of the stator vane, while the circular second protrusion 5212 may be disposed closer to the trailing edge than the first protrusion 5211, and thus may be disposed on a thinner portion of the stator vane to further enhance the strength of the overall structure using a space of limited size.

In both the first and second embodiments described above, the case where each set includes three main body side mounting portions is described. It is also possible that each set includes other numbers of main body side mounting portions, for example, four, five, and the like.

In one embodiment, adjacent main body side mounting portions in each set have the same angular difference. Specifically and with reference to fig. 7, the angular difference α 1- α 2 ═ α 2- α 3. That is, the deflection angle of the stator blade 500B with respect to the stator blade 500A is the same as the deflection angle of the stator blade 500C with respect to the stator blade 500B. In the case where there are more main body side mounting portions in each set 420, the difference between the mounting angle of the (N + 1) th main body side mounting portion and the mounting angle of the (N + 1) th main body side mounting portion is equal to the difference between the mounting angle of the (N + 2) th main body side mounting portion and the mounting angle of the (N + 1) th main body side mounting portion. For example, the difference may be 10 degrees. Such uniform division of the stator blade installation angle interval is very advantageous for studying the influence of the stator blade installation angle on the torque ratio of the torque converter, and can obtain the stator blade installation angle range with the desired torque ratio in a fast and reliable manner, and shorten the development period.

The mounting of stator band 600 with stator vanes is described below with reference to fig. 5-8. The stator band 600 is a separate component from the stator vanes 500, 500 'and the stator bodies 400, 400', and may be separately manufactured.

As shown in fig. 5 to 7, the stator vane 500 is provided with a radially outer mounting portion 571 for mounting the stator band 600 on a side portion 560 opposite to the main body side mounting portion 510. The radially outer mounting portion 571 may be a rivet joint.

Stator band 600 may have two separate sections 610 and 620, as shown in FIG. 8. The segments 610 and 620 may be segments of equal circumferential length. The section 610 has a stator band side mounting portion 611, and the section 620 has a stator band side mounting portion 621. The stator sub-band side mounting portions 611, 621 may be staking holes for staking with radially outer mounting portions 571 of the stator vane 500 in the form of staking heads. Thus, when the stator band 600 is mounted, the stator-band-side mounting portions 611 and 621 of the two separate segments 610 and 620 are mounted in alignment with the rivet joints of the stator blade 500.

Such an arrangement allows the stator bands to be manufactured separately and in a simple and easy manner to mount to the stator vanes.

Further, the total number of the stator band-side mounting portions 611 and 621 is the same as the number of sets of the main body-side mounting portions of the stator main body 400. Taking fig. 8 as an example, 26 sets of body-side mounting portions are provided on the outer circumferential surface 410 of the stator body 400, which are distributed in the circumferential direction. The stator vanes 500 are mounted in the main body side mounting portions 421 having the same stator vane mounting angle α 1 in each set. Thus, the stator 30 has 26 stator blades. When it is desired to change the torque ratio of the torque converter, the stator vanes 500 can be mounted in the main body side mounting portion 422 having the same stator vane mounting angle α 2. At this time, the stator band 600 only needs to be displaced in the circumferential direction, for example, advanced by an angle along the arrow R shown in fig. 8 so that the staking holes of the stator band 600 are mounted in alignment with the staking heads of the stator blades 500 in the respective main body side mounting portions 422, without redesigning and manufacturing a stator band 600 of a new specification. Thereby, the stator band can also be manufactured according to a unified standard, saving costs and development cycles.

The number of stator vanes may also be adjusted according to the present disclosure. The following description is made with reference to fig. 2, 8, and 9.

The stator 30 shown in fig. 2 and 8 has 26 sets of body-side mounting portions provided on the outer circumferential surface 410 of the stator body 400. The stator vanes 500 are mounted in the main body side mounting portions 421 having the same stator vane mounting angle α 1 in each set. Thus, the stator 30 has 26 stator blades.

The stator body 400 shown in fig. 9 is the same as the stator body 400 shown in fig. 8, and the outer circumferential surface 410 thereof is also provided with 26 sets of body-side mounting portions. In contrast, one stator vane 500 is mounted to each two sets of main body side mounting portions, that is, the stator vanes 500 are mounted to each other set of main body side mounting portions. Specifically, as shown in fig. 9, in the group 420A, a stator blade 500 is mounted in the main body side mounting portion 421 thereof. In group 420B, which is adjacent to group 420A, no stator vanes are installed. In another group adjacent to the group 420B, a stator blade 500 is additionally installed.

Accordingly, the rivet holes of the stator strip 600 are also riveted to the rivet heads of the stator vanes 500 at an interval.

It is also possible to make different arrangements as required, for example, to mount one stator blade per three sets of main body side mounting portions.

Thus, when the same stator main body, the same type of stator blades, and the same stator band are used, different torque ratios of the torque converter are achieved by adjusting the number of stator blades. This provides significant savings in manufacturing and development costs and cycle time.

It is to be understood that the structures described above and shown in the drawings are merely examples of the present disclosure, which can be substituted with other structures exhibiting the same or similar function for achieving the desired end result. Furthermore, it should be understood that the embodiments described above and shown in the drawings are to be regarded as merely constituting non-limiting examples of the present disclosure and that it can be modified in a number of ways within the scope of the patent claims.