Lubricant supply system for motor vehicle

Abstract

To provide a lubricant supply system which allows a system with a more compact structure and efficient operation and achieves ecological and economic improvement, and to provide a motor vehicle including the lubricant supply system.SOLUTION: A lubricant supply system especially for a motor vehicle comprises: at least one lubricant pump (2, 3) configured to convey a lubricant for lubricating engine components; and a lubricant filter (4) formed to filter the lubricant conveyed in a lubricant circuit optionally. The lubricant filter (4) is directly attached to the at least one lubricant pump (2, 3), and / or an imaginary extension part of a pump shaft (5) of the at least one lubricant pump (2, 3) penetrates through the lubricant filter (4), and / or at least two lubricant pumps (2, 3) are provided. The at least two lubricant pumps (2, 3) are driven by a common pump shaft (5).SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The invention relates to a lubricant supply system, in particular for two-wheeled (single track) motor vehicles, with the features according to the preamble of claim 1 .

[0002] Lubricant supply systems of the type mentioned at the beginning are at least one lubricant pump configured to pump lubricant in at least one lubricant circuit of the vehicle for lubricating engine components; Optionally, a lubricant filter configured to filter the lubricant delivered in the lubricant circuit. Contains:

[0003] In known systems of the prior art, lubricant is delivered to the various engine components which serves to reduce friction and therefore wear between the engine components during vehicle operation.

[0004] Thus, the lubricant may be, for example: - Lubricates the piston and the cylinder (or cylinder liner) - To lubricate the transmission, or -Provides necessary lubrication to different components of two-wheeled vehicles Used for:

[0005] After the lubricant has been used to perform the lubrication, it usually collects at a specific location, for example the crank casing, from where it is sucked out again via at least one lubricant pump and further supplied to the engine components for lubrication via a lubricant circuit.

[0006] In this lubricant circuit, the lubricant is usually drawn in by a lubricant pump and then passes through a lubricant filter, where it is purified of foreign matter and reconditioned for further use.

[0007] However, a disadvantage of the known systems of the prior art is that, due to the limited construction space (especially for two-wheeled vehicles), the paths between the individual components of the lubricant supply system are very long, which on the one hand necessitates increased energy consumption for at least one lubricant pump, which has to compensate for the power losses caused by the long pipeline system and / or the required oil volumes lead to environmental technical disadvantages.

[0008] Another drawback is the relatively long start-up time when starting the vehicle, because due to the long piping paths it takes a relatively long time for the engine components to be supplied with lubricant, which leads to increased wear.

[0009] The object of the present invention is therefore to provide a lubricant supply system, as well as a crank casing and a motor vehicle equipped with such a lubricant supply system, which at least partially remedies the aforementioned disadvantages of the prior art and / or allows for a more compactly constructed system and / or a more efficient operation and / or results in environmental and / or economical improvements.

[0010] This problem is solved according to the invention by a lubricant supply system, in particular for two-wheeled motor vehicles, with the features set forth in the characterizing part of claim 1, by a crank casing equipped with such a lubricant supply system as well as by a motor vehicle equipped with such a lubricant supply system.

[0011] According to the invention, a lubricant supply system for a motor vehicle comprises: at least one lubricant pump configured to pump lubricant in at least one lubricant circuit of the vehicle for lubricating engine components; Optionally, a lubricant filter configured to filter the lubricant delivered in the lubricant circuit; Including, a lubricant filter is connected directly to at least one lubricant pump; and / or - a virtual extension of the pump shaft of at least one lubricant pump passes through the lubricant filter; and / or At least two lubricant pumps are provided, the at least two lubricant pumps being driven by a common pump shaft. It is stipulated that:

[0012] Therefore, in a first aspect of the invention it is provided that the lubricant filter is connected directly to at least one lubricant pump.

[0013] This can be understood as meaning that the casing of the at least one lubricant pump and the casing of the lubricant filter are in direct contact or are even formed by a common component, so that the path that the lubricant has to travel between the at least one pump and the lubricant filter is shortened to a minimum, so that, on the one hand, power losses due to the path along which the lubricant is pumped between the at least one lubricant pump and the lubricant filter are almost eliminated and, on the other hand, the lubricant volume "lost" through the piping can likewise be reduced to a minimum.

[0014] In a second aspect of the invention it is provided that an imaginary extension of the pump shaft of the at least one lubricant pump passes through the lubricant filter.

[0015] This second aspect also makes it possible to minimize the path of the lubricant between the at least one lubricant pump and the lubricant filter by arranging the lubricant filter relative to the at least one lubricant pump, which further makes it possible to reduce the lubricant volume required for the lubricant supply as well as the power losses due to the movement of the lubricant in the lubricant lines.

[0016] In a third aspect, at least two lubricant pumps are provided, the at least two lubricant pumps being driven by a common pump shaft.

[0017] In most lubricant supply systems in motor vehicles, the lubricant supply is carried out by at least two lubricant pumps, usually a suction pump and a high-pressure pump dividing the lubricant system and supplying lubricant to different components. In the prior art, it is well known to position these two lubricant pumps in separate locations (depending on the engine components to be lubricated), but two different drive systems are also required for these lubricant pumps.

[0018] However, in a third aspect of the invention, a common drive system can be realized using one pump shaft common to the at least two lubricant pumps, which allows a significant reduction in construction space by eliminating at least one drive unit and further allows a more energy-efficient and effective drive of the at least two lubricant pumps.

[0019] What the above-mentioned aspects of the invention have in common is that it is possible to achieve a compact lubricant system which can be installed in a small construction space, particularly in two-wheeled vehicles, at the desired or optimal location of the vehicle (e.g. under the piston-cylinder unit, the crankshaft and / or the drive transmission and / or transversely to the direction of travel in two-wheeled vehicles) without forming relatively long duct paths.

[0020] More efficient and more effective possibilities for operating lubricant supply systems not only reduce the energy consumption that must be assumed for the operation of such systems, but also allow for smaller resources when designing the corresponding systems, which in turn allows for smaller construction space, which in most, especially two-wheeled, vehicles must in any case continually reduce.

[0021] Moreover, efficient utilization can of course improve environmental and economic aspects.

[0022] Another advantageous aspect of the present invention is that due to the more compact design, the lubricant paths can also be shortened, which reduces the volume of lubricant in the lubricant supply system, which not only further reduces the manufacturing engineering effort for production, but also reduces the lubricant volume required during operation of the vehicle, in which case less old lubricant volume has to be disposed of during maintenance work related to changing the lubricant, which again improves not only economic but also environmental aspects.

[0023] However, it may be provided that by reducing the structural volume of the lubricant system, the gained structural volume can be utilized to increase the lubricant volume, thereby lengthening maintenance intervals and thus reducing the frequency with which lubricant changes must be performed.

[0024] Furthermore, the reduced lubricant volume and / or shorter piping system of the lubricant supply system allows lubricant to be delivered to the engine components very quickly when the vehicle is started, resulting in very quick lubrication of the engine components, which in turn results in less wear and lower noise levels when the vehicle is started.

[0025] This reduced noise level when starting the vehicle can be due, for example, to the fact that a lubricated chain tensioner is already lubricated within a few revolutions of the crankshaft, thus resulting in quieter operation of the vehicle.

[0026] Due to the reduced number of components and the shortened pipeline path of the lubricant circuit, the processing effort during manufacturing as well as the number of pipeline closures can also be reduced, which increases the process reliability during manufacturing and significantly reduces the risk of leaks during operation of the lubricant supply system.

[0027] Another benefit of the reduced component count is a significant weight reduction.

[0028] A two-wheeled motor vehicle can be understood to mean, for example, a motorcycle, a scooter, a moped, a motorbike or the like.

[0029] The system according to the invention does not necessarily have to be formed by the manufacture of a new motor vehicle: a corresponding system can also be implemented in existing motor vehicles, for example as described at the beginning of this specification, and thus be retrofitted.

[0030] The lubricant filter being directly connected to at least one lubricant pump can be understood to mean, for example, that the casing of the lubricant pump is in direct contact with the casing of the lubricant filter or is formed by the same structural part.

[0031] The imaginary extension of the pump shaft passing through the lubricant filter can be understood to mean, for example, that a cylindrical imaginary or virtual extension of the pump shaft intersects or passes through the lubricant filter. It may also be provided that the pump shaft and the lubricant filter have coaxial longitudinal axes.

[0032] However, in preferred embodiments, a small offset may be provided between the longitudinal axis of the pump shaft and the longitudinal axis of the lubricant filter, for example to ensure an easy and simply constructed transfer of the lubricant from the at least one pump to the lubricant filter.

[0033] Providing a common pump shaft for at least two lubricant pumps can be understood, for example, to mean that a one-piece, i.e. one-piece, shaft drives the lubricant pumps. Naturally, the pump shaft can also have several components which are rotationally, preferably completely, kinematically, for example materially, positively and / or frictionally connected to one another.

[0034] Advantageous embodiments of the invention are defined in the dependent claims.

[0035] It may be provided that the at least one lubricant pump or the at least two lubricant pumps comprise a gear pump, preferably a trochoid pump.

[0036] It may be expediently provided that the filter casing of the lubricant filter is formed by an opening in the crank casing.

[0037] It may be provided that the at least one lubricant pump or at least two lubricant pumps are positioned in corresponding openings in the crank casing.

[0038] This opening may be a blind hole, optionally with a bottom-side inlet opening for the lubricant, which is substantially cylindrical (particularly preferably with a circular bottom) or in another way adapted to the shape of the actual filter material.

[0039] It may preferably be provided that the at least one lubricant pump and the lubricant filter are fluidically connected by at least one opening (see inlet opening above), preferably an opening in the crank casing, particularly preferably a hole in the crank casing.

[0040] The at least one lubricant pump and the lubricant filter are connected by at least one opening in the crankcase, which opening is already realized by the casting method used for the production of the crankcase, so that by producing the opening in a casting method, for example, any kind of cross-sectional geometry can be realized.

[0041] Therefore, by forming the filter casing as a crank casing and arranging the lubricant pump or at least two lubricant pumps in the crank casing, the crank casing only needs to form one common casing, whereby the at least one lubricant pump can be connected to the lubricant filter exclusively by means of corresponding openings in the crank casing or holes in the crank casing, whereby the maximum length of the fluid line between the lubricant pump and the lubricant filter can be reduced to the length of the openings.

[0042] The lubricant may suitably be any of the well known engine oils.

[0043] It may be provided that a first lubricant pump of the at least two lubricant pumps is configured as a suction pump and / or a second lubricant pump of the at least two lubricant pumps is configured as a high-pressure pump.

[0044] It may preferably be provided that the lubricant pump, preferably the first lubricant pump, is arranged to suck lubricant from the crank casing via the feed passage.

[0045] It may preferably be provided that a lubricant pump, preferably a first lubricant pump, is configured to pump lubricant into a first supply passage leading into the transmission casing.

[0046] The first supply passage may be, for example, a low pressure supply passage.

[0047] It may be provided that the lubricant pump, preferably the second lubricant pump, is configured to suck lubricant from the transmission casing via the feed passage.

[0048] It may preferably be provided that a lubricant pump, preferably a second lubricant pump, is arranged to pump lubricant into a second supply passage leading to the crank casing.

[0049] The second supply passage may, for example, be configured as a high-pressure supply passage, which can be used in particular for lubricating moving components of the crank casing of an internal combustion engine of a motor vehicle, preferably components which are directly involved in the combustion, such as, for example, pistons, piston rings, clutches, chain tensioners, cylinder heads, piston injection nozzles or crankshafts.

[0050] It may be provided that the at least one lubricant pump or the at least two lubricant pumps are driven by a pump shaft, which is preferably connected in a motion-transmitting manner to the crankshaft, particularly preferably via a single-stage and / or multi-stage gear transmission.

[0051] It is preferably provided that the rotational axis of the at least one lubricant pump or at least two lubricant pumps and the longitudinal axis of the lubricant filter are oriented parallel to one another (especially taking into account manufacturing and assembly accuracy).

[0052] Furthermore, a claim is made to a crank casing, in particular of a two-wheeled motor vehicle, which is equipped with a lubricant supply system according to the invention, whereby the lubricant supply system is preferably arranged under the piston-cylinder unit, the crankshaft and / or the drive transmission of the motor vehicle.

[0053] It may be provided that the opening in the crank casing forms the housing of the lubricant filter and that a lubricant filter cover, which is preferably provided on the crank casing, guides the lubricant filtered by the lubricant filter from the lubricant filter onwards, particularly preferably into a second supply channel in the crank casing. The lubricant filter cover may preferably have a channel section for this guiding function.

[0054] It may preferably be provided that the lubricant pump, preferably the first lubricant pump, is configured to suck lubricant from the crank casing via a feed passage, the feed passage in the crank casing being arranged such that the lubricant is fed from the crankshaft directly to the feed passage by the oil scraper.

[0055] Likewise, claims are made for a motor vehicle, in particular a two-wheeled vehicle, equipped with a lubricant supply system according to the invention.

[0056] Further details and advantages of the invention are explained in detail below with reference to the drawings in which: FIG. [Brief description of the drawings]

[0057] [Figure 1] 1 shows an embodiment of a lubricant supply system according to the invention in a state of installation in a drive unit of a two-wheeled motor vehicle; [Diagram 2] FIG. 2 shows another diagram of an embodiment of the lubricant supply system according to the invention in a mounted state in a drive unit of a two-wheeled motor vehicle. [Diagram 3] FIG. 2 shows yet another diagram of an embodiment of the lubricant supply system according to the invention in a mounted state in a drive unit of a two-wheeled motor vehicle. [Figure 4] FIG. 2 shows yet another diagram of an embodiment of the lubricant supply system according to the invention in a mounted state in a drive unit of a two-wheeled motor vehicle. [Diagram 5] FIG. 2 shows yet another diagram of an embodiment of a lubricant supply system according to the invention in a mounted state in a drive unit of a two-wheeled motor vehicle. [Figure 6] FIG. 2 shows yet another diagram of an embodiment of a lubricant supply system according to the invention in a mounted state in a drive unit of a two-wheeled motor vehicle. [Figure 7] FIG. 7 is a view showing the embodiment of the lubricant supply system shown in FIGS. 1 to 6 alone. [Figure 8] FIG. 7 is another view showing the embodiment of the lubricant supply system shown in FIGS. 1 to 6 alone. [Figure 9]FIG. 7 is yet another view showing the embodiment of the lubricant supply system shown in FIGS. 1 to 6 alone. [Figure 10] FIG. 7 is yet another view showing the embodiment of the lubricant supply system shown in FIGS. 1 to 6 alone. [Figure 11] FIG. 4 illustrates another embodiment of a lubricant supply system according to the present invention. [Figure 12] FIG. 2 is another diagram illustrating another embodiment of the lubricant supply system according to the present invention. [Figure 13] FIG. 4 is yet another diagram illustrating another embodiment of a lubricant supply system according to the present invention. [Figure 14] FIG. 4 is yet another diagram illustrating another embodiment of a lubricant supply system according to the present invention. [Figure 15] FIG. 1 shows a two-wheeled vehicle equipped with an embodiment of the lubricant supply system according to the invention.

[0058] Figures 1 to 6 show a first embodiment of the present invention of a lubricant supply system 1 installed in a drive unit 15 of a two-wheeled automobile 20, and Figure 1 shows a cross-sectional view of the entire drive unit 15, in which the lubricant supply system 1 is shown.

[0059] FIG. 2 shows a detailed view of the lubricant supply system 1 shown in FIG.

[0060] FIG. 3 shows the same cross-sectional view as FIG. 1 and FIG. 2, but from the opposite observation direction.

[0061] Figures 4 and 5 show further cross-sectional views of the embodiment of Figures 1 to 3 of the first embodiment of the lubricant supply system 1. Figure 4 illustrates a cutting plane perpendicular to Figures 1 to 3, now showing a view from below, and Figure 5 shows the same cutting plane as Figure 4, but from above.

[0062] FIG. 6 shows a cross-sectional view in a direction perpendicular to the views of FIGS.

[0063] As can be seen from FIGS. 1 to 6, the lubricant supply system 1 has two lubricant pumps 2 and 3, and both lubricant pumps 2 and 3 are driven by one common pump shaft 5.

[0064] In this embodiment, the lubricant pumps 2 and 3 are realized as gear pumps, specifically as trochoid pumps, and the inside of a trochoid pump wheel is driven by the rotation of a pump shaft 5 .

[0065] The pump shaft 5 is, in turn, driven via a multi-stage gear transmission 8 which is connected in a direct motion manner to a crankshaft 9 .

[0066] The drive unit 15 shown in the present embodiment for a two-wheeled vehicle 20 is realized by an internal combustion engine having a piston-cylinder unit 11 (not shown as a whole for the sake of clarity) whose piston 12 (shown in cross section) is connected in a known manner to the crankshaft 9 via a connecting rod 14.

[0067] The first lubricant pump 2 in this embodiment is realized as a suction pump, by which the lubricant is sucked directly out of the crank casing 6 after it has been scraped off from the crankshaft 9, in particular from the piston weights 22 of the crankshaft 9, for example via an oil scraper 21.

[0068] Advantageously, it may be provided that the feed passage of the first lubricant pump 2 branches off in the crank casing 6 at a position 23 (see in this respect FIG. 6 ) where the lubricant is fed by an oil scraper 21 and by the movement of the crankshaft 9.

[0069] After the lubricant has been sucked out of the crank casing 6 by the first lubricant pump 2 via the feed passage, it is further fed by the first lubricant pump 2 via the supply passage 18 into the transmission casing 7 .

[0070] In this embodiment, the transmission casing 7 is realized integrally with the crank casing 6 .

[0071] Coming from the supply passage 18, the lubricant is discharged "from above" onto the drive transmission 10 of the two-wheeled vehicle 20, whereby the lubricant flows down over the drive transmission 10 by gravity, thereby lubricating the drive transmission 10.

[0072] The lubricant then collects again in the lower region of the transmission housing 7, from where it is sucked out of the transmission housing 7 via a feed channel by the second lubricant pump 3, which is configured as a high-pressure pump.

[0073] The lubricant under pressure delivered from the transmission casing 7 by the second lubricant pump 3 is then delivered through the second lubricant pump 3 into a lubricant filter 4 which is directly connected to the second lubricant pump 3, where the lubricant is filtered, purified of contaminants and conditioned.

[0074] The lubricant filter 4 is arranged such that it is penetrated by an imaginary extension of the pump shaft 5 .

[0075] It has been found that with this configuration the pumping path between the second lubricant pump 3 and the lubricant filter 4 can be reduced to a minimum.

[0076] This shortening makes it possible to keep the lubricant circuit very short, which allows the lubricant to be delivered quickly and with little loss to the engine components to be lubricated.

[0077] This results in very little pressure loss, which leads to energy savings.

[0078] Furthermore, lubricant volume can be saved and lubricant can be delivered to the engine components very quickly when the drive unit 15 is started, which results in very quick lubrication of the engine components, which further results in reduced wear and therefore reduced noise levels when the drive unit 15 is started.

[0079] This reduced noise level when starting up the drive unit 15 can be attributed, for example, to the fact that a chain tensioner that is lubricated by lubricant is already supplied with lubricant within a few revolutions of the crankshaft 9, thus resulting in quieter operation of the drive unit 15.

[0080] After filtration by the lubricant filter 4 , the lubricant delivered under pressure by the second lubricant pump 3 is pumped through the lubricant filter cover 13 into the second supply passage 16 .

[0081] Of note is the special geometrical configuration of the lubricant filter cover 13, which makes it possible to further reduce the construction space, since the lubricant filter cover 13 forms part of the lubricant circuit and directs the lubricant flow after it has passed through the lubricant filter 4 into the second supply channel.

[0082] Furthermore, the special illustrated configuration of the lubricant filter cover 13 allows the flow of the lubricant to be particularly flow-optimized.

[0083] The second supply passage 16 supplies lubricant to various engine components of the drive unit 15, which are either lubricated by the lubricant in their movement during operation of the drive unit 15 or are supplied with lubricant by the lubricant pressure.

[0084] Such engine components supplied with lubricant by the second supply passage 16 are, for example, the piston-cylinder unit 11, the clutch, the chain tensioner, the crankshaft, the cylinder head, the piston injection nozzles, etc.

[0085] After being used to lubricate the engine components, the lubricant again collects in the crank casing 6 and is again sucked from the crank casing 6 by the first lubricant pump 2 and its delivery line and supplied to the transmission casing 7 for lubricating the drive transmission 10.

[0086] As is clear from FIGS. 1 to 6, the filter casing of the lubricant filter 4 is formed by the crank casing 6.

[0087] The lubricant pumps 2,3 are also positioned in corresponding openings in the crank casing 6.

[0088] These supply lines, delivery lines and connecting lines (for example of the second lubricant pump 3 to the lubricant filter 4 ) are formed by corresponding openings, holes and passages in the crank casing 6 .

[0089] By realizing the lubricant supply system 1 in a substantially linear arrangement, the construction space of the lubricant supply system can be significantly minimized, as can be seen from FIGS.

[0090] This reduction makes it possible to arrange the lubricant supply system 1 transversely to the direction of travel of the two-wheeled motor vehicle 20 .

[0091] Another advantage of this minimized constructional space is that the lubricant supply system 1 can be positioned below the engine components, almost at the lowest end of the drive unit 15, which reduces the suction height of the lubricant from the crank casing 6 to the first lubricant pump 2 or the second lubricant pump 3, which in turn reduces the drive power of the lubricant supply system 1 and reduces the volume of the ducts as well as the path that the lubricant has to travel.

[0092] Furthermore, the special positioning of the lubricant filter 4 directly adjacent to the lubricant pump 3 offers the possibility of carrying out the delivery of the lubricant over the shortest possible path with a very high inlet cross section to the lubricant filter 4.

[0093] Another advantage of this special positioning is that the supply passages 16, 18 of the engine components 9, 10, 11, 12, 14 can also be realized by one or more central supply holes which can be realized with a relatively short length, which further results in a shortened supply path.

[0094] Due to the shortened piping path of the lubricant circuit, the lubricant reaches the consumer quickly and with little loss.

[0095] The pressure boost is achieved in a very short time, which allows the pressure boost to be built up more quickly, which further reduces wear on these components.

[0096] Lubricant volume and component count can also be reduced, resulting in significant weight savings.

[0097] The reduced number of components and the shortened pipeline path of the lubricant circuit also reduce the processing effort during manufacturing as well as the number of pipeline closures, which increases process reliability during manufacturing and significantly reduces the risk of leaks during operation of the lubricant supply system 1.

[0098] 7 to 10 show the embodiment of the lubricant supply system 1 shown in FIGS. 1 to 6 alone.

[0099] FIG. 7 shows a perspective view of a multi-stage gear transmission 8, a pump shaft 5 connected to this gear transmission 8, lubricant pumps 2 and 3, a lubricant filter 4 and a lubricant filter cover 13.

[0100] FIG. 8 shows another perspective view of these components, however, the lubricant filter cover 13 is not shown for improved visibility.

[0101] 9 and 10 show projection views of FIG.

[0102] It can be seen that the lubricant filter 4 and the pump unit with the lubricant pumps 2, 3 form separate components which are pushed into the crank casings 6, 7 from opposite sides.

[0103] For this purpose, the lubricant filter 4 is pushed into a corresponding opening in the crank casing 6 , which opening is then closed via a lubricant filter cover 13 .

[0104] The lubricant filter cover 13 is arranged directly on the crank casing 6 via a screw connection 17 and further serves for fixing and positioning the lubricant filter 4 .

[0105] Similarly, the pump unit consisting of the pump shaft 5, the first lubricant pump 2 and the second lubricant pump 3 is pushed into the corresponding opening in the crank casing 6 and closed and positioned via the pump closing cover 19.

[0106] The pump closing cover 19 itself is screwed directly onto the crank casing 6 via a threaded connection 17 .

[0107] Outside the pump closing cover 19, the pump shaft 5 is connected to the crankshaft 9 via a multi-stage gear transmission 8 so as to transmit rotational motion thereto.

[0108] The fluid connection between the second lubricant pump 3 and the lubricant filter 4 is realized by means of a corresponding opening in the crank casing 6 .

[0109] 11 to 14 show another embodiment of the lubricant supply system 1, where FIG. 11 shows a perspective view with a lubricant filter cover 13, FIG. 12 shows a perspective view without the lubricant filter cover 13, and FIGS. 13 and 14 show projection views of FIG. 12.

[0110] The embodiment of the lubricant supply system illustrated in Figures 11 to 14 is substantially similar to the embodiment described above, but this other embodiment differs by the dimensions of the lubricant pumps 2, 3, the lubricant filter 4, the multi-stage gear transmission 8 as well as the geometric shape of the lubricant filter cover 13.

[0111] Nevertheless, the functional manner of the alternative embodiment of the lubricant supply system 1 shown in FIGS. 11 to 14 is substantially the same as the functional manner of the lubricant supply system described with reference to FIGS.

[0112] FIG. 15 shows a two-wheeled motor vehicle 20 with a drive unit 15 configured as an internal combustion engine, which comprises an embodiment of the lubricant supply system 1 according to the invention. [Explanation of symbols]

[0113] 1 Lubrication system 2 First lubricant pump (suction pump) 3 Second lubricant pump (high pressure pump) 4 Lubricant Filter 5 Pump shaft 6 Crank casing 7 Transmission casing 8 Multi-stage gear transmission 9. Crankshaft 10 Drive transmission device 11 Piston-cylinder unit 12 Piston 13 Lubricant filter cover 14 Connecting rod 15 Drive units for two-wheeled motor vehicles 16 Second supply passage 17 Threaded joint 18 Supply passage 19 Pump Closure Cover 20. Automobiles 21 Oil scraper 22 Piston weight 23 Location

Claims

1. A lubricant supply system, in particular for a two-wheeled motor vehicle (20), comprising: at least one lubricant pump (2, 3) configured to pump lubricant in at least one lubricant circuit of said vehicle (20) for lubricating engine components (9, 10, 11, 12, 14); Optionally, a lubricant filter (4) configured to filter the lubricant delivered in the lubricant circuit. A lubricant supply system comprising: said lubricant filter (4) being directly connected to said at least one lubricant pump (2, 3); and / or a virtual extension of the pump shaft (5) of the at least one lubricant pump (2, 3) passes through the lubricant filter (4); and / or At least two lubricant pumps (2, 3) are provided, the at least two lubricant pumps (2, 3) being driven by a common pump shaft (5). A lubricant supply system comprising:

2. 2. The lubricant supply system according to claim 1, wherein the at least one lubricant pump (2, 3) or the at least two lubricant pumps (2, 3) comprise a gear pump, preferably a trochoid pump.

3. 3. A lubricant supply system according to claim 1, wherein the filter casing of the lubricant filter (4) is formed by an opening in the crank casing (6).

4. 4. The lubricant supply system according to claim 1, wherein the at least one lubricant pump (2, 3) or the at least two lubricant pumps (2, 3) are positioned in corresponding openings in a crank casing (6).

5. 5. The lubricant supply system according to claim 1, wherein the at least one lubricant pump (2, 3) and the lubricant filter (4) are fluidically connected by at least one opening, preferably an opening in the crank casing (6), particularly preferably a bore in the crank casing (6).

6. 6. The lubricant supply system according to claim 1, wherein a first lubricant pump (2) of the at least two lubricant pumps (2, 3) is configured as a suction pump and / or a second lubricant pump (3) of the at least two lubricant pumps (2, 3) is configured as a high-pressure pump.

7. 7. A lubricant supply system according to claim 1, wherein the lubricant pump, preferably the first lubricant pump (2), is configured to suck the lubricant from a crank casing (6) via a feed passage.

8. 8. The lubricant supply system according to claim 1, wherein the lubricant pump, preferably the first lubricant pump (2), is configured to pump the lubricant into a first supply passage (18) leading to a transmission casing (7).

9. 9. A lubricant supply system according to claim 1, wherein the lubricant pump, preferably the second lubricant pump (3), is configured to suck the lubricant from the transmission casing (7) via a feed passage.

10. 10. A lubricant supply system according to at least one of the preceding claims, characterized in that the lubricant pump, preferably the second lubricant pump (3), is configured to pump the lubricant into a second supply passage (16) leading to a crank casing (6).

11. 11. The lubricant supply system according to claim 1, wherein the at least one lubricant pump (2, 3) or the at least two lubricant pumps (2, 3) are driven by the pump shaft (5), which is preferably connected in a motion-transmitting manner to a crankshaft (9), particularly preferably via a single-stage gear transmission (8).

12. A crank casing, in particular of a two-wheeled motor vehicle (20), equipped with a lubricant supply system (1) according to at least one of claims 1 to 11, preferably arranged under a piston-cylinder unit (11), a crankshaft (9) and / or a drive transmission (10) of the motor vehicle (20).

13. 13. The crank casing according to claim 12, wherein the opening in the crank casing (6) forms a housing for the lubricant filter (4) and a lubricant filter cover (13) preferably provided on the crank casing (6) guides the lubricant filtered by the lubricant filter (4) from the lubricant filter (4) onwards, particularly preferably into a second supply passage (16) of the crank casing (6).

14. 14. A crank casing according to claim 12 or 13, characterized in that the lubricant pump, preferably the first lubricant pump (2), is configured to suck the lubricant from the crank casing (6) via a feed passage, the feed passage in the crank casing (6) being arranged in such a way that the lubricant is fed by an oil scraper (21) directly from the crankshaft (9) to the feed passage.

15. A motor vehicle (20), in particular a two-wheeled vehicle, equipped with a lubricant supply system (1) according to at least one of the claims 1 to 11.

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