Lubricant collection tray for a gearbox housing of a motor vehicle transmission

Abstract

The invention relates to a lubricant collection tray (6) for a transmission housing of a motor vehicle transmission, comprising a tray-shaped separating section (8) that at least partially encloses a receiving area (26) in which, when the lubricant collection tray (6) is installed in the transmission housing, a receiving space for a rotatable transmission element of the motor vehicle transmission is defined, and thereby separates it at least from a lubricant collection area (28), which, in an installation position of the lubricant collection tray (6), is provided in a vertically located lower region of the lubricant collection tray (6) and in which, when the lubricant collection tray (6) is installed in the transmission housing, a lubricant reservoir of the motor vehicle transmission is configured. Furthermore, an intake section (30) is provided, which is radially located on the outside of the separating section (8) and is at least partially situated within the lubricant collection area (28).The intake section (30) has a suction port (36) and at least partially defines an intake chamber which, in the installed state of the lubricant collection tray (6), is intended for supply with lubricant from the lubricant reservoir and into which the suction port (36) opens.

Description

[0001] The invention relates to a lubricant collecting tray for a transmission housing of a motor vehicle transmission, comprising a tray-shaped separating section that at least partially encloses a receiving area, in which, when the lubricant collecting tray is installed in the transmission housing, a receiving space for a rotatable transmission element of the motor vehicle transmission is defined, and thereby separates it at least from a lubricant collecting area, which, when the lubricant collecting tray is installed, is provided in a vertically lower region of the lubricant collecting tray and in which, when the lubricant collecting tray is installed in the transmission housing, a lubricant reservoir of the motor vehicle transmission is configured. Furthermore, the invention relates to a motor vehicle transmission in the transmission housing of which an aforementioned lubricant collecting tray is provided.

[0002] In motor vehicle transmissions, areas and components that require lubrication and / or cooling, such as gear meshes and bearings, are usually supplied with lubricant via circulating lubrication. For this purpose, the corresponding areas and components are usually integrated into a lubricant supply system, via which lubricant is specifically fed to the corresponding areas and components. Within the lubricant supply system, the lubricant is usually withdrawn from a lubricant reservoir via a feed pump and pumped to the respective areas or components. A lubricant reservoir is usually defined by a transmission housing of the motor vehicle transmission as an area in which the lubricant collects after being supplied to the respective areas or components.In some cases, gear housings are also provided with lubricant collecting trays, which can be used to influence the accumulation of lubricant by specifically separating areas.

[0003] US 2006 / 0048600 A1 discloses a motor vehicle transmission in the form of an automatic transmission, in which, among other things, a differential gear set is housed in a transmission housing. In the differential gear set, a differential carrier is non-rotatably connected to a drive gear, which, together with the differential carrier, is arranged in a receiving space of the transmission housing defined for this purpose. Furthermore, a lubricant collecting tray is provided in the transmission housing, which, in conjunction with another housing element, partially encloses the drive gear and the differential carrier and thereby partially separates the receiving space from a lubricant reservoir, which, in the transmission housing, is defined vertically below the receiving space.By this separation, a defined level of lubricant is achieved in the receiving space and thus also in the area of ​​the drive gear and the differential carrier, whereby a gap is defined at the bottom between the lubricant collecting tray and the further housing element, through which lubricant can flow towards the lubricant reservoir.

[0004] Based on the prior art described above, it is now the object of the present invention to provide a lubricant collecting tray by means of which, on the one hand, an at least regional division of a receiving area from a lubricant collecting area can be designed in a reliable manner and, on the other hand, when used in a transmission housing of a motor vehicle transmission, a construction of a lubricant supply system that is as compact as possible can be represented.

[0005] This object is achieved based on the preamble of claim 1 in conjunction with its characterizing features. The dependent claims that follow each of these claims provide advantageous developments of the invention. A motor vehicle transmission in whose transmission housing a lubricant collecting tray according to the invention is further subject to claims 14 and 15.

[0006] According to the invention, a lubricant collecting tray comprises a tray-shaped separating section which at least partially encloses a receiving area in which, in the installed state of the lubricant collecting tray in the transmission housing, a receiving space for a rotatable transmission element of the motor vehicle transmission is defined, and thereby separates it at least from a lubricant collecting area which, in an installed position of the lubricant collecting tray, is provided in a vertically lower area of ​​the lubricant collecting tray and in which, in the installed state of the lubricant collecting tray in the transmission housing, a lubricant reservoir of the motor vehicle transmission is configured.

[0007] In the lubricant collecting tray according to the invention, a separating section is designed which is intended to at least partially enclose a receiving area and thereby create at least one division of a lubricant collecting area. For this at least partial enclosing and division, the separating section preferably has a shell shape in that it extends on one axial side of the receiving area, radially overlapping the receiving area as far as possible, and runs radially outward of the receiving area, axially overlapping at least a part of the receiving area. In this respect, the separating section of the lubricant collecting tray shields the receiving area at least partially axially in one direction and radially at least vertically downwards.

[0008] When installed in a transmission housing, the lubricant collecting tray defines a receiving space in the receiving area, in which a rotatable transmission element of a motor vehicle transmission having the transmission housing is located. In contrast, a lubricant reservoir of the motor vehicle transmission is provided in the lubricant collection area, which is located vertically below when the lubricant guide tray is installed, so that the lubricant collecting tray, when installed, at least largely shields the receiving space from the lubricant reservoir. As a result, the receiving space can be arranged next to the lubricant reservoir and vertically overlaps the lubricant reservoir, and despite this arrangement, a fluid level can be maintained on the part of the lubricant reservoir, which would otherwise cause the rotatable transmission element located there to be immersed too deeply in the receiving space.

[0009] The shielding provided by the lubricant collection tray ensures a lower lubricant level in the receiving area when the fluid level in the lubricant reservoir is higher, thus preventing splashing losses from the rotating gear element. For this purpose, the tray-shaped separating section must enclose the receiving area at least at its border to the lubricant collection area, thus separating it from the lubricant collection area.

[0010] Preferably, the separating section is equipped with an axially extending through-opening, via which the receiving area is axially connected to an area located, in particular vertically above the lubricant collection area in the installed position of the lubricant collecting tray. This through-opening can then be used to establish a connection between the rotatable transmission element and another component of the motor vehicle transmission within the motor vehicle transmission. Thus, a shaft for the rotationally fixed connection of the rotatable transmission element can be passed through the through-opening.

[0011] In particular, the separating section is also provided with at least one through-hole, via which a fastening point for fastening the lubricant collecting tray to the gearbox housing is formed.

[0012] For the purposes of the invention, "axial" refers to an orientation parallel to an axis that coincides with the rotational axis of the rotatable gear element to be accommodated in the receiving space. In contrast, "radial" refers to an orientation in the diameter direction with a center point on the axis.

[0013] According to the invention, the lubricant collecting tray is particularly designed as a single piece, so that sections of the lubricant collecting tray are inseparably connected to one another. Alternatively or additionally, the lubricant collecting tray is preferably made of a plastic or metallic material.

[0014] The invention now comprises the technical teaching that an intake section is also provided, which is designed to be radially outwardly located on the separating section and at least partially located in the lubricant collection area. The intake section has a suction connection and at least partially delimits an intake chamber, which, in the installed state of the lubricant collecting tray, is provided for supplying lubricant from the lubricant reservoir and into which the suction connection opens. In other words, in the lubricant collecting tray according to the invention, a suction section is defined in addition to the separating section, wherein this suction section is connected radially outwardly to the separating section and at least partially lies within the lubricant collection area.A suction port is provided in the intake section, wherein the suction section further defines at least a portion of a suction chamber to which lubricant can be supplied from the lubricant reservoir when the lubricant collecting tray is installed. The suction port opens into the suction chamber, so that lubricant located in the suction chamber can be removed from the suction chamber via the suction port.

[0015] Such a design of a lubricant collecting tray has the advantage that, in addition to shielding the receiving area from at least the lubricant collection area, the lubricant collecting tray also functions as a suction line through which lubricant can be sucked in from the lubricant reservoir. This allows a respective feed pump to be arranged in a compact manner in the area of ​​the lubricant collecting tray, so that, due to the functional integration of the suction line into the lubricant collecting tray, an overall compact design of a lubricant supply system for a motor vehicle transmission and thus also of the motor vehicle transmission itself is possible. Furthermore, this also reduces assembly effort due to a smaller number of components to be assembled.Furthermore, the suction section of the lubricant collecting tray according to the invention can easily be designed in a suitable area, whereby suction of lubricant at an optimal location is possible.

[0016] The suction port of the intake section is preferably designed for direct connection to a feed pump, i.e., the feed pump is connected to the suction port with one suction side directly or via only a short piece of pipe. Within the scope of the invention, a suction strainer could also be integrated into the intake section, whereby this could specifically be provided at the suction port on the intake chamber side.

[0017] The fact that the intake section delimits the intake chamber “at least partially” means, in the sense of the invention, that the intake chamber is either completely defined by the intake section or is only delimited by the interaction of the intake section with at least one further component, preferably separate from the lubricant collecting tray.

[0018] The intake section preferably partially delimits the intake chamber and has an opening which is bordered by a flange of the intake section. The flange of the intake section serves to attach a cover to close the opening of the intake section and thus enclose the intake chamber between the intake section and the cover. This allows a large part of the intake chamber to be defined via the intake section of the lubricant collecting tray, but also allows the intake section to be manufactured easily due to the opening. In addition, an inlet for feeding the intake chamber from the lubricant reservoir can thus be defined on the cover or between the intake section and the cover.

[0019] Alternatively or additionally, a permanent magnet is arranged in the lubricant collection area. Advantageously, this reliably removes metal particles from the lubricant being drawn into the intake chamber from the lubricant reservoir by attracting and retaining these metal particles via the permanent magnet. This also prevents clogging of other components in the lubricant supply system, such as a feed pump.

[0020] According to one possible embodiment of the invention, a collecting section is also provided which at least partially defines a collecting chamber. In this case, at least one inlet, which each serves to supply lubricant to the collecting chamber, and / or at least one outlet, which each serves to discharge lubricant from the collecting chamber, are provided on the collecting section. This embodiment of the lubricant collecting tray according to the invention has the advantage that the lubricant collecting tray can thus also assume the additional function of a lubricant collection point, from which a further distribution of lubricant is then carried out. Particularly preferably, both an inlet and a plurality of outlets are provided on the collecting section.

[0021] Particularly preferably, the collecting section is provided in the installation position of the lubricant collecting tray vertically on top of the bowl-shaped separating section and is connected to the separating section radially on the outside.

[0022] In a further development of the aforementioned design option, at least one through-hole is provided in the collecting section, each of which is designed as a screen and through which lubricant can be drained from the collecting chamber. This at least one through-hole thus functions as a spray nozzle, through which lubricant can be sprayed from the collecting chamber into the areas requiring lubricant. This allows, for example, the gear meshes of the motor vehicle transmission to be supplied with lubricant.

[0023] Alternatively or in addition to the aforementioned development, the collecting section partially defines the collecting space and has an opening which is delimited by a flange of the collecting section. The flange of the collecting section serves to fasten a cover in order to close the opening of the collecting space and thus define the collecting space between the collecting section and the cover. Advantageously, the collecting space can thereby be formed in a simple manner in terms of manufacturing technology via the collecting section and the separate cover to be fastened thereto. An inlet of the collecting space is preferably defined at the opening of the collecting section in that the cover to be fastened thereto is provided with at least one inlet connection. Particularly preferably, the cover has exactly one inlet connection, which is designed in particular as a connection point to a filter element.

[0024] As an alternative or in addition to the aforementioned variants of the design option, the at least one drain is designed as a drain connection on the collecting section. Thus, the collecting section defines at least one drain connection to which a respective line can be connected. Particularly preferably, the collecting section is designed with two drain connections.

[0025] In a further embodiment of the invention, the separating section delimits the receiving area with at least one hollow section, at least partially radially surrounding it, from an outer area in which the lubricant collection area is also located. By designing the separating section with the at least one hollow section, the at least partial separation of the receiving area from at least a part of the outer area, and thereby at least from the lubricant collection area, can be achieved. Preferably, an axial separation of the receiving area from the outer area is also at least partially achieved via the at least one hollow section.

[0026] In a further development of the aforementioned embodiment, a respective inner wall of the at least one hollow section is interrupted in at least one region, in each of which an outlet is formed. Each outlet runs tangentially to the respective inner wall radially outwards and merges into a pocket formed by the at least one hollow section, which pocket is also connected to the outer region via a passageway. Such a configuration has the advantage that when the rotatable gear element received in the receiving region rotates, the level of lubricant in the receiving region can be kept low, since lubricant moved along with the rotation of the gear element is displaced into each outlet and from there can escape via the pocket and passageway into the outer region.In this respect, a centrifuge channel is formed via each outlet, each pocket and each passage.

[0027] Preferably, the one outlet in each case in the at least one hollow section in the installed position of the lubricant collecting tray is designed vertically above the lubricant collection area, whereby a vertical height is realized at which, on the one hand, a problem-free outflow of lubricant from the receiving area into the outer area can take place and, on the other hand, a backflow of lubricant from the outer area into the receiving area is excluded.

[0028] Most preferably, two outlets are formed on the at least one hollow section. These outlets, when the lubricant collecting tray is installed, are positioned vertically at substantially the same height above the lubricant collection area and are circumferentially spaced from one another. This allows lubricant to reliably escape from the receiving area even if the rotatable gear element to be accommodated in the receiving area rotates in opposite directions of rotation. This is because lubricant can be discharged via one of the outlets in each of the directions of rotation.

[0029] Alternatively or in addition to the aforementioned development, the at least one hollow section is penetrated by at least one opening in a region lying vertically at the top in the installed position of the lubricant guide shell, via which openings a connection between the outer region and the receiving region is established. In an advantageous manner, a targeted supply of lubricant from the outer region to the receiving region can thereby be carried out via the at least one opening, so that a lubricant supply to the rotatable gear element placed in the receiving region also takes place. The at least one opening is designed in particular as a radially extending bore which forms a baffle for the respective supply of lubricant. In particular, a basin-like depression is formed by the at least one hollow section at each opening of the at least one opening on the side of the outer region.This promotes the accumulation of lubricant in the area of ​​each mouth.

[0030] In particular, the aforementioned variants of the aforementioned embodiment are implemented together, wherein the separating section has a first hollow section which is connected to a second hollow section via a radially inwardly extending intermediate section, wherein the first hollow section is provided with one outlet each, whereas at least one opening is formed in the second hollow section. This makes it possible to implement a structure of the separating section in which the radial division and also an axial division of the receiving area of ​​at least the lubricant collection area are reliably designed. Particularly preferably, the first hollow section has a substantially axially variable profile, while the second hollow section is composed of a first part with a substantially axially variable profile and a second part with a profile that is both axially and radially variable.The second part of the second hollow section is preferably conical in shape.

[0031] In a further development of the invention, at least one line section is designed with two connection points. Advantageously, the lubricant collecting tray according to the invention can thus also form part of a line volume of a lubricant supply system of the motor vehicle transmission, thus enabling a compact arrangement and eliminating the need for separate channels and / or pipes.

[0032] A lubricant collecting tray designed according to one or more of the variants described above is, in particular, part of a transmission housing of a motor vehicle transmission. The lubricant collecting tray defines a receiving space, which is separated from a lubricant reservoir by the lubricant collecting tray. Furthermore, a feed pump is then connected with its suction side to the suction port of the intake section of the lubricant collecting tray. This allows for a compact design of the motor vehicle transmission and reduces assembly effort.

[0033] Particularly preferably, the feed pump is then connected on the pressure side via a line section of the lubricant collecting tray to a cooler and / or a filter element, wherein a connection is then subsequently established in particular to a collecting section of the lubricant collecting tray, from which a further distribution of the lubricant to the areas to be supplied takes place. In particular, in the motor vehicle transmission, an electric machine is also integrated into the transmission housing, wherein, starting from the collecting section, lubricant is also supplied, among other things, to a rotor cooling system and / or a stator cooling system of the electric machine. Furthermore, lubricant is sprayed specifically into the areas to be supplied via through-bores in the collecting section.Lubricant, which flows out again after being supplied to the rotor cooling and / or the stator cooling, is preferably guided into the receiving area via at least one opening in the separating section and thus fed to the rotatable gear element located there.

[0034] In particular, a differential gear set of the motor vehicle transmission is accommodated in the receiving space delimited by the lubricant collecting tray.

[0035] An advantageous embodiment of the invention, which is explained below, is illustrated in the drawings. It shows: Fig. 1 is a perspective view of a portion of a motor vehicle transmission with a lubricant collecting tray according to a preferred embodiment of the invention; Fig. 2 a perspective view of the lubricant collecting tray from Fig. 1; Fig. 3 a view of a lubricant supply system of the motor vehicle transmission from Fig. 1; Fig. 4 another view of the lubricant collecting tray according to Fig. 1 and Fig. 2; Fig. 5 a sectional view of the motor vehicle transmission from Fig. 1; Fig. 6 a detailed view of a collecting section of the lubricant collecting tray according to the Fig. 1, Fig. 2 and Fig. 4; and Fig. 7 to 9 further sectional views of the motor vehicle transmission from Fig. 1.

[0036] Out of Fig. Figure 1 shows a perspective view of part of a motor vehicle transmission 1, wherein the motor vehicle transmission 1 is shown in the region of a differential gear set 2 and with a partially illustrated transmission housing 3. In addition to an outer housing part 4 and a housing part 5 accommodated therein, the transmission housing 3 has a lubricant collecting tray 6, which is designed according to a preferred embodiment of the invention.

[0037] The lubricant collecting tray 6 is attached to the rest of the transmission housing 3 via a screw connection 7 and comprises a bowl-shaped separating section 8, via which the lubricant collecting tray 6 separates a receiving space 9 from another interior region 10 and a lubricant reservoir 11 provided in this interior region 10 of the transmission housing 3. This separation of the receiving space 9 from the lubricant reservoir 11 prevents a lubricant level corresponding to the lubricant reservoir 11 from occurring in the receiving space 9, which would otherwise lead to increased splashing losses of the differential gear set 2.

[0038] In Fig. 2 shows a perspective view of the lubricant collecting tray 6. As can be seen here, the separating section 8 comprises a first hollow section 12, which is designed in the shape of a hollow cylinder and which is penetrated by a recess 13 in a region lying vertically upwards in an installed position of the lubricant collecting tray 6. As can be seen in conjunction with the perspective view of Fig. 1, in the installed state of the lubricant collecting tray 6, a tooth engagement of a pinion 14 with a drive gear 15 takes place via this recess 13, which is connected in a rotationally fixed manner to a differential cage 16 within the differential gear set 2 and is accommodated together with the rest of the differential gear set 2 in the receiving space 9.

[0039] Due to its hollow cylindrical shape, the first hollow section 12 of the separating section 8 has a course that essentially only changes in one axial direction, wherein the first hollow section 12 is followed by an intermediate section 17 of the separating section 8, which extends radially inward from the first hollow section 12 and has a course that essentially only changes in the radial direction. The intermediate section 17 connects the first hollow section 12 to a second hollow section 18, which is composed of a first part 19 and a second part 20. The connection to the intermediate section 17 is established at the first part 19 of the second hollow section 18, wherein the first part 19 has a course that essentially changes in the axial direction and is thus largely hollow cylindrical.In contrast, the second part 20 of the hollow section 18 changes its shape both in the axial direction and in the radial direction, whereby the second part 20 has a conical shape.

[0040] At the end, a through-opening 21 is defined by the second part 20 of the hollow section 18, through which a shaft 22 is guided through the lubricant collecting tray 6 in the motor vehicle transmission 1 for the rotationally fixed connection to the differential gear set 2 (cf. Fig. 1). To increase the rigidity of the lubricant collecting tray 6, the hollow section 18 is also connected to the intermediate section 17 via stiffening ribs 23. Furthermore, the hollow section 18 is penetrated by a casing 24, which is provided with a through-bore 25. The through-bore 25 serves to guide the screw connection 7.

[0041] The hollow sections 12 and 18 as well as the intermediate section 17 give the separating section 8 its essentially bowl-shaped configuration, through which a receiving area 26 of the lubricant collecting tray 6, in which the receiving space 9 is defined when the lubricant collecting tray 6 is installed, is separated from an outer area 27 and a corresponding lubricant collection area 28. In the installed state of the lubricant collecting tray 6, the remaining inner area 10 is realized in the outer area 27, and the lubricant reservoir 11 is realized in the lubricant collection area 28.

[0042] Apart from separating the receiving space 9 from the remaining interior area 10 and in particular the lubricant reservoir 11, the lubricant collecting tray 6 is, as a special feature, also part of a lubricant supply system 29 of the motor vehicle transmission 1, wherein the lubricant supply system 29 is partly in Fig. 3. Thus, the lubricant collecting tray 6 forms a suction point of the lubricant supply system 29, in that the lubricant collecting tray 6 is equipped with a suction section 30 in addition to the separating section 8, which is particularly shown in the further view of the lubricant collecting tray 6 in Fig. 4 and also a sectional view of the motor vehicle transmission 1 in Fig. 5 can be seen in each case. This suction section 30 is designed in the installed position of the lubricant collecting tray 6 vertically below on the outside of the separating section 8 and, together with a cover 31 fastened to the suction section 30, delimits a suction chamber 32, which in particular in Fig. 5. The intake section 30 of the lubricant collecting tray 6 is located at least partially in the lubricant collection area 28 and thus, in the installed state of the lubricant collecting tray 6, also at least partially in the lubricant reservoir 11.

[0043] The cover 31 is attached to the intake section 30 on a flange 33 and, when attached, closes an opening 34 of the intake section 30, whereby the intake section 30 and the cover enclose the intake chamber 32 between them. Furthermore, a suction opening 35 is formed on the cover 31, through which lubricant can flow from the lubricant reservoir 11 into the intake chamber 32, as shown in Fig. 5. The suction section 30 further forms a suction connection 36, to which a feed pump 37 is connected with its suction side in the lubricant supply system 29.

[0044] As in Fig. 3, a pressure side of the feed pump 37 is then connected within the lubricant supply system 29 via a connecting line 38 to a line section 39, which is also formed by the lubricant collecting tray 6 on the outside of the separating section 8 and which has two connection points 40 and 41. While the connection to the connecting line 38 is established at the connection point 40, a cooler 42 is connected to the connection point 41, in which cooler the lubricant delivered via the feed pump 37 can be brought into heat exchange with another medium, in particular cooling water. A filter element 43, in which particles can be separated from the lubricant, is then connected to the cooler 42.

[0045] Following the filter element 43, the lubricant is then distributed to various areas to be supplied with lubricant, this function also being implemented by the lubricant collecting tray 6. For this purpose, the lubricant collecting tray 6 is equipped with a collecting section 44, which, in the installed position of the lubricant collecting tray 6, is arranged vertically above and outside the separating section 8. Together with a cover 45 attached thereto, the collecting section 44 delimits a collecting chamber 46, in which the lubricant is collected after filtering via the filter element 43 and from which it is subsequently distributed to the areas to be supplied. The collecting chamber 46 is particularly visible in the individual view of the collecting section 44 in Fig. 6. The cover 45 forms an inlet 47 to the collecting chamber 46, in that the cover 45 has a connection opening for the filter element 43. On the side of the collecting section 44, a flange 48 is also formed, to which the cover 45 is attached in order to close an opening 49 of the collecting section 44 defined by the flange 48, and thereby define the collecting chamber 46.

[0046] As in the Fig. 2 and Fig. 6, the collecting section 44 forms two outlets 50 and 51 in the form of a drain connection 52 and 53, respectively. While at the drain connection 52, within the lubricant supply system 29, a connection to a stator cooling system of a - in Fig. 3 only indicated - electric machine 54 of the motor vehicle transmission 1, the drain connection 53 is connected to a rotor cooling of the electric machine 54.

[0047] In addition, several through holes 55 and 56 are provided in the collecting section 44, which Fig. 6 and are each designed as a screen. Spray nozzles are implemented via the through holes 55 and 56, through which lubricant is sprayed in the directions in which the through holes 55 and 56 point, once a certain pressure is reached in the collecting chamber 46. This is shown in Fig. 2 and also in Fig. 4 respectively. Furthermore, on the one hand, based on the further sectional view of the motor vehicle transmission 1 in Fig. 7 shows that lubricant is injected via the through holes 55 into the area of ​​the tooth engagement of the pinion 14 with the drive gear 15 to lubricate this tooth engagement. Fig. 8, that a further tooth engagement 57 of the motor vehicle transmission 1 is supplied with lubricant via the through holes 56.

[0048] In order to prevent, apart from the separation, an excessive accumulation of lubricant in the receiving area 26 and thus also in the receiving space 9, pockets 57 and 58 are formed in the hollow section 12 of the separating section 8, which are each formed above a vertical center of the separating section 8 essentially at the same height and are each connected via a passage 59 or 60 with the outer area 27 of the lubricant collecting tray 6 and thus also with the remaining inner area 10. This is particularly evident from the Fig. 2 and Fig. 5. The individual pockets 57 or 58 are connected to the receiving area 26 via an outlet 61 or 62, respectively, with which an inner wall 63 of the hollow section 12 is interrupted in each case and which merges tangentially to the inner wall 63 radially outwards into the respective pockets 57 or 58. When the drive gear 15 rotates, depending on the direction of rotation, lubricant is pumped into one of the outlets 61 and 62 and thus into the respective associated pockets 57 or 58, from which the lubricant pumped there can then flow out via the respective passage 59 or 60. This emptying of the receiving space 9 is achieved when the differential gear set 2 and thus also the drive gear 15 rotates.

[0049] In addition, the lubricant collecting tray 6 also provides a supply of lubricant to the receiving space 9 in order to ensure sufficient lubrication of the differential gear set 2. For this purpose, an opening 64 is formed in a vertically upper area of ​​the hollow section 18, which opening is designed as a through-hole and is particularly Fig. 2. Through this opening 64, lubricant, which runs off after being supplied to a rotor 65 of the electric machine 54, can be guided into the receiving space 9. This run-off is shown in a further sectional view of the motor vehicle transmission 1 in Fig.9. In order to realize an accumulation of lubricant in the area of ​​the opening 64, a basin-like depression 66 is formed in the area of ​​the opening 64, which, in addition to the intermediate section 17 and the stiffening ribs 23 located on both sides of the opening 64, is also designed by a web-like elevation 67 on the outside of the hollow section 18.

[0050] Finally, a permanent magnet 68 is arranged on the lubricant collecting tray 6, which is located in the region of the intake section 30 and thus, when the lubricant collecting tray 6 is installed, lies within the lubricant reservoir 11. The permanent magnet 68 is intended to attract and thus separate metal particles from the lubricant.

[0051] By means of the inventive design of a lubricant collecting tray, in addition to a regional division of a receiving area from a lubricant collection area, further functions can be represented within a lubricant supply system of a motor vehicle transmission. Reference symbol 1 motor vehicle transmission 2 differential gear set 3 Gearbox housing 4 Housing part 5 Housing part 6 Lubricant tray 7 Screw connection 8 Separation section 9 Recording room 10 Interior 11 Lubricant reservoir 12 hollow section 13 Recess 14 pinions 15 drive gear 16 Differential cage 17 Intermediate section 18 hollow section Part 19 20 part 21 Passage opening 22 Wave 23 stiffening ribs 24 Casing 25 through hole 26 Recording area 27 Outdoor area 28 Lubricant collection area 29 Lubricant supply system 30 intake section 31 lids 32 intake chamber 33 flange 34 Opening 35 Intake opening 36 Suction connection 37 Feed pump 38 connecting line 39 line section 40 Junction 41 Junction 42 coolers 43 Filter element 44 Collective section 45 lids 46 Assembly room 47 Inlet 48 flange 49 Opening 50 Expiration 51 Procedure 52 drain connection 53 Drain connection 54 Electric machine 55 through hole 56 through hole 57 Bag 58 bag 59 passage 60 passage 61 Outlet 62 outlet 63 Interior wall 64 Breakthrough 65 Rotor 66 Deepening 67 increase 68 permanent magnet QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] US 2006 / 0048600 A1

[0003]

Claims

[1] A lubricant collecting tray (6) for a transmission housing (3) of a motor vehicle transmission (1), comprising a tray-shaped separating section (8) which at least partially encloses a receiving area (26) in which, when the lubricant collecting tray (6) is installed in the transmission housing (3), a receiving space (9) for a rotatable transmission element of the motor vehicle transmission (1) is defined, and thereby separates it from at least one lubricant collecting area (28) which, when the lubricant collecting tray (6) is installed, is provided in a vertically lower area of the lubricant collecting tray (6) and in which, when the lubricant collecting tray (6) is installed in the transmission housing (3), a lubricant reservoir (11) of the motor vehicle transmission (1) is formed, characterized bythat a suction section (30) is also provided, which is designed to be radially outwardly located on the separating section (8) and at least partially located in the lubricant collection area (28), that the suction section (30) has a suction connection (36) and at least partially delimits a suction chamber (32) which, in the installed state of the lubricant collecting tray (6), is provided for feeding with lubricant from the lubricant reservoir (11) and into which the suction connection (36) opens. [2] Lubricant collecting tray (6) according to claim 1, characterized byin that the suction section (30) partially delimits the suction space (32) and has an opening (34) which is delimited by a flange (33) of the suction section (30), wherein the flange (33) of the suction section (30) serves to fasten a cover (31) in order to close the opening (34) of the suction section (30) and thus enclose the suction space (32) between the suction section (30) and the cover (31). [3] Lubricant collecting tray (6) according to claim 1 or 2, characterized by that a permanent magnet (68) is arranged in the lubricant collection area (28). [4] Lubricant collecting tray (6) according to one of claims 1 to 3, characterized byin that a collecting section (44) is also provided, which at least partially defines a collecting space (46), wherein at least one inlet (47), each serving to supply lubricant to the collecting space (46), and / or at least one outlet (50, 51) are provided on the collecting section (44), each serving to discharge lubricant from the collecting space (46). [5] Lubricant collecting tray (6) according to claim 4, characterized by that at least one through-bore (55, 56) is introduced into the collecting section (44), each of which is designed as an aperture and through which lubricant can be discharged from the collecting space (46). [6] Lubricant collecting tray (6) according to claim 4 or 5, characterized byin that the collecting section (44) partially defines the collecting space (46) and has an opening (49) which is delimited by a flange (48) of the collecting section (44), wherein the flange (48) of the collecting section (44) serves to fasten a cover (45) in order to close the opening (49) of the collecting section (44) and thus to define the collecting space (46) between the collecting section (44) and the cover (45). [7] Lubricant collecting tray (6) according to one of claims 4 to 6, characterized by that the at least one outlet (50, 51) is designed as a respective outlet connection (52, 53) on the collecting section (44). [8] Lubricant collecting tray (6) according to one of the preceding claims, characterized by that the separating section (8) delimits the receiving area (26) with at least one hollow section (12, 18) at least partially radially surrounding an outer area (27) in which the lubricant collecting area (28) is also located. [9] Lubricant collecting tray (6) according to claim 8, characterized by in that a respective inner wall (63) of the at least one hollow section (12) is interrupted in at least one region in which an outlet (61, 62) is formed, wherein the respective outlet (61, 62) runs radially outwards tangentially to the respective inner wall (63) and merges into a pocket (57, 58) formed by the at least one hollow section (12), which pocket is also connected to the outer region (27) via a passage (59, 60). [10] Lubricant collecting tray (6) according to claim 8 or 9, characterized by that the at least one hollow section (18) is penetrated by at least one opening (64) in a region lying vertically upwards in the installed position of the lubricant guide shell (6), via which a connection between the outer region (27) and the receiving region (26) is established. [11] Lubricant collecting tray (6) according to claim 10, characterized bythat at each mouth of the at least one opening (64) on the side of the outer region (27) a basin-like depression (66) is formed by the at least one hollow section (18). [12] Lubricant collecting tray (6) according to claims 8 to 11, characterized by in that the separating section (8) has a first hollow section (12) which is connected to a second hollow section (18) via a radially inwardly extending intermediate section (17), wherein the first hollow section (12) is provided with one outlet (61, 62) each, whereas at least one opening (64) is formed on the second hollow section (18). [13] Lubricant collecting tray (6) according to one of the preceding claims, characterized by that in addition at least one line section (39) is designed which has two connection points (40, 41) each. [14] Motor vehicle transmission (1), comprising a transmission housing (3) with a lubricant collecting tray (6) according to one or more of claims 1 to 13, wherein the lubricant collecting tray (6) delimits a receiving space (9) which is separated from a lubricant reservoir (11) via the lubricant collecting tray (6), and wherein a feed pump (37) is connected with its suction side to the suction connection (36) of the suction section (30) of the lubricant collecting tray (6). [15] Motor vehicle transmission (1) according to claim 14, characterized by that a differential gear set (2) is accommodated in the receiving space (9).

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