Fluid delivery system including a separate filtration module

Abstract

A fluid delivery system for supplying fluid to at least one machine component (A), in particular to an engine and / or a transmission of a motor vehicle, comprising a first pump (20) and a second pump (30), a drive (3) for driving the first pump (20) and / or the second pump (30), a reservoir (11, 12) for storing fluid, and a filter module (5) for filtering the fluid, wherein the first pump (20) delivers fluid in a supply flow from the reservoir (11, 12) to the machine component (A), the second pump (30) is arranged downstream of the machine component (A) and delivers at least a portion of the fluid in a branch flow downstream of the machine component (A) into the reservoir (11, 12), the filter module (5) being arranged in the branch flow.

Description

Technical Field

[0001] This invention relates to a fluid delivery system for supplying fluid to at least one machine component, particularly an engine and / or transmission of a motor vehicle. The invention particularly relates to supplying fluid, especially oil, to the machine component for lubrication and / or cooling. The fluid delivery system includes: a housing comprising a reservoir for storing fluid; and a pump module for delivering the fluid. Background Technology

[0002] Conventional fluid delivery systems for supplying fluid to machine components, particularly in the field of motor vehicles for supplying fluid to engines or transmissions, are typically based on forced lubrication, especially wet sump lubrication, using at least one pump to deliver fluid, particularly oil, to the location to be lubricated and / or cooled. In conventional wet sump lubrication, fluid discharged from the machine component is collected in a reservoir located below the machine component and pumped out of the reservoir and resupplyed to the machine component. This creates a fluid circulation for lubricating and / or cooling the machine component, in which fluid is transported.

[0003] Such fluid delivery systems typically include at least one filtration module for filtering particles and / or contaminants from the fluid before it is supplied to machine components; that is, the pump first delivers the fluid through an oil filter before it is supplied to the machine components.

[0004] This fluid delivery system has the disadvantage that the filter module has high flow resistance, and the pump used to deliver the fluid has high power requirements due to the filter module in order to reliably supply the fluid to the machine components. Particularly in the field of motor vehicles, this can lead to increased fuel consumption and / or power consumption and / or reduced mileage.

[0005] The fluid delivery system also has the disadvantage that it can draw in air, for example, when the vehicle is under extreme driving conditions. Turning and / or sudden acceleration or braking at high speeds can cause centrifugal force, which forces the fluid, particularly oil, away from the suction point within the reservoir, drawing in air, or air alone, in addition to the fluid, at that point. This can lead to an interruption of the fluid supply to machine components, and depending on the duration of the interruption and the temperature and / or condition of the machine components, particularly the vehicle's engine and / or transmission, the consequences can be fatal. In the worst case, this can result in damage to the vehicle's engine and / or transmission.

[0006] Therefore, alternatives to traditional wet sump lubrication have been developed to prevent air from being drawn in. Existing technologies, for example, disclose wet sump lubrication in which the reservoir includes so-called baffles, particularly baffles or partitions, to prevent fluid from being forced out of the suction point under large centrifugal forces, especially under high lateral accelerations, such as during cornering. It has also been demonstrated that implementing the pump and / or suction point at a very deep location within the reservoir, for example in the form of a funnel-shaped recess within the reservoir, ensures that sufficient fluid is always present in the area of ​​the suction point, even under extreme driving conditions.

[0007] The disadvantage of this type of wet sump lubrication is that, due to the recessed design of the reservoir, a significant amount of space is required, particularly in its vertical direction. This means that engines with integrated wet sump lubrication must, for example, be mounted relatively high within the vehicle to accommodate the reservoir. This results in a high center of gravity within the vehicle, which can negatively impact handling.

[0008] Therefore, as an alternative to wet sump lubrication, so-called dry sump lubrication has been developed. It is particularly suitable for high-performance engines and / or off-road vehicles or sports cars. In dry sump lubrication, fluid is drawn from the oil pan by a pump, flows back into the oil pan after being supplied to the machine components, and is then supplied to a separate oil tank. The oil tank, in turn, supplies fluid to the machine components, where another pump draws fluid from the tank and supplies it to the machine components.

[0009] The advantages of dry sump lubrication are that it reliably lubricates machine components because it is less affected by centrifugal forces, and the oil is actively supplied to the suction point of the tank. Furthermore, a large tank improves fluid cooling, and the flat sump beneath the machine components lowers their overall height, thus lowering the vehicle's center of gravity. This is particularly advantageous for low-profile vehicles such as sports cars. Additionally, the separately constructed tank can be installed in any location because fluid is first discharged from the machine components into the sump and then actively transported to the tank.

[0010] While this type of lubrication is highly reliable in supplying fluid to machine components, it is prone to failure and, most importantly, incurs high costs due to the large number of additional components. In addition to an auxiliary pump that delivers fluid from the sump to the tank, dry sump lubrication also requires, for example, an additional tank adjacent to the sump for fluid storage. Especially due to the separately installed tank, dry sump lubrication requires more overall space than traditional wet sump lubrication. Summary of the Invention

[0011] The object of the present invention is to provide a fluid delivery system for supplying fluid to at least one machine component, which reliably supplies fluid to the machine component and exhibits reduced power requirements.

[0012] This objective is achieved by the fluid delivery system according to claim 1.

[0013] A fluid delivery system for supplying fluid to at least one machine component, particularly an engine and / or transmission of a motor vehicle, includes a housing comprising a reservoir for storing the fluid. Unless otherwise stated, the machine components mentioned in this application may also include multiple machine components. The at least one machine component to be supplied may be a motor comprising a transmission and an electric motor. For example, a transmission of an electric motor may form a first machine component to be supplied, and an electric motor may form a second machine component to be supplied.

[0014] The electric motor is preferably used to drive a motor vehicle and forms a main component of the motor vehicle. The transmission can be a speed reducer that lowers the speed of the electric motor. The transmission can include one or more gears, particularly two gears. The fluid can be formed, for example, by oil. If the machine component to be supplied is an electric motor including a transmission and an electric motor, the transmission can form the main container of the fluid delivery system, while the electric motor, especially the drive shaft, can form the secondary container.

[0015] The housing may include a first housing component, particularly a housing cup, and a second housing component, particularly a housing cap. The housing may include a first suction port and a second suction port. Fluid can be discharged and, in particular, drawn from the housing via the first and second suction ports. The housing may also include a first pressure port and / or a second pressure port. Fluid can be supplied to the housing, in particular, via the first and / or second pressure ports. In a preferred embodiment, the housing includes both a first and a second pressure port. Alternatively, the housing may include only one pressure port, particularly the second pressure port.

[0016] The fluid delivery system, particularly the housing, may also include a first return port and / or a second return port. Fluid can flow back from one or more machine components to be supplied to the housing, particularly back to a reservoir, via the first and / or second return ports. The first and / or second return ports can be connected to one or more machine components. The first and second return ports can be connected to the same machine component. Alternatively, the first return port can be connected to a different machine component than the second return port.

[0017] The first and second housing components can be directly joined together, i.e., the first and second housing components contact each other when joined, particularly in the area of ​​joining. Alternatively, the first and second housing components can be indirectly joined together, i.e., the first and second housing components are connected to each other via at least one other component (e.g., a washer), particularly in the area of ​​joining. The first and second housing components can be separated by another component, for example.

[0018] The first housing component and the second housing component can be joined to each other by force-fit and / or form-fit. For example, the first housing component and the second housing component can be joined to each other by threaded connection, rivet connection, or cinch connection. When the first housing component and the second housing component are joined by force-fit and / or form-fit, a gasket can be formed between the first housing component and the second housing component to seal the housing, especially the reservoir, to prevent fluid leakage. This gasket can be formed by a separate component or, for example, by a sealant.

[0019] The first and second housing components can be joined together in a material-fitting manner. For example, the first and second housing components can be joined together by adhesive, welding, or brazing. When the first and second housing components are joined together in a material-fitting manner, they can be sealed together via a joint connection. The first and second housing components can be joined together in a material-fitting manner such that a sealing point can be formed in the joint area. The first and second housing components can be joined together in a material-fitting manner such that a reservoir implemented at least within the housing is circumferentially sealed in the joint area.

[0020] The first and second housing components can be connected to each other in both form-fit and / or force-fit and material-fit manner. The first and second housing components can then be welded or glued to each other, for example, and simultaneously connected to each other by, for example, screws. The first and second housing components can also be connected to each other by locating pins in a form-fit manner, so that they are aligned with each other in their positions, and joined together by a material-fit connection.

[0021] The housing, particularly the first housing component and / or the second housing component, can be manufactured by reshaping or original molding methods. The housing, particularly the first housing component and / or the second housing component, can be manufactured by original molding methods, such as casting, injection molding, or sintering. Alternatively, the housing, particularly the first housing component and / or the second housing component, can be manufactured by, for example, deep drawing reshaping methods. The housing, particularly the first housing component and / or the second housing component, can be mannitol derived from plastics or metals. The housing, particularly the first housing component and / or the second housing component, can be made, for example, from aluminum or steel.

[0022] A reservoir for storing fluid may be implemented within a housing. Specifically, the reservoir may be implemented by a first housing component and / or a second housing component, and is particularly enclosed. For example, the reservoir may be formed by a hollow space within the housing. The reservoir may include at least one suction point at which the fluid can be drawn.

[0023] The reservoir may include a main sump and a secondary sump. If the reservoir includes a main sump and a secondary sump, the suction point is, for example, located in the main sump. The main sump and the secondary sump may be fluidly connected to each other via baffles, i.e., fluid can flow from the main sump to the secondary sump and vice versa, regardless of the baffles. For this purpose, the baffles may, for example, include at least one cavity connecting the main sump and the secondary sump to each other. Alternatively or additionally, the baffles may be configured to allow fluid to flow from the main sump to the secondary sump and vice versa, thereby bypassing the baffles. The baffles may, for example, have at least a partial vertical extension less than the fluid height at that location during normal operation of the fluid transport system, thereby creating an overflow of fluid, and / or the baffles may be configured to interrupt or be shorter than the extension of the reservoir in the longitudinal direction at that location, so that fluid can flow through the baffles, i.e., the baffles do not, for example, completely span the reservoir, particularly in their vertical and horizontal extensions.

[0024] A fluid delivery system, particularly a housing, may include a first return port. The first return port may, for example, be connected to a machine component. Fluid returning from the machine component, particularly a portion thereof, may flow back to the housing, particularly a reservoir, via the first return port. Fluid may flow from the machine component back to the reservoir, particularly the main oil collection tank of the reservoir, via the first return port.

[0025] The first return port can be formed as a cavity within the housing. The first return port can be constructed within a first housing component or a second housing component. A portion of the fluid returning from the machine assembly can flow directly back into the reservoir, particularly the main oil sump, via the first return port. The first return port can open into the reservoir, particularly into the main oil sump, on its side facing away from the machine assembly.

[0026] Fluid delivery systems, particularly housings, may include a second return port. The second return port may be connected, for example, to the same machine component as the first return port. Alternatively, the second return port may be connected to a different machine component. Fluid flowing back from the machine component can flow back into the housing via the second return port. Fluid flowing back from the machine component can flow back into the housing via the second return port, particularly at a distance from the reservoir.

[0027] The second return port can be constructed as a cavity within the housing. The second return port can be constructed within either the first or second housing component. The second return port can be connected to the reservoir, particularly the secondary oil sump, via a balancing conduit within or on the housing. Alternatively or additionally, the second return port can be connected to the reservoir, particularly the main oil sump, via a second pressure conduit. Specifically, the second return port does not extend into the reservoir, particularly the main oil sump, on its side facing away from the machine assembly.

[0028] The first and / or second return ports may include screens. The screens may be implemented on the side of the first and / or second return ports facing the machine assembly. In an alternative embodiment, the first and / or second return ports may have screens on the side facing away from the machine assembly.

[0029] The first and / or second return ports can be fluidly connected to one or more machine components via first and / or second return lines. The first and / or second return lines can connect one or more machine components to a reservoir via the first and / or second return ports, i.e., fluid can flow back from one or more machine components to the reservoir via the first and / or second return lines. The first return line can, for example, connect a machine component, particularly a transmission, to the first return port, and the second return line can connect the same or different machine components, particularly electric motors, to the second return port.

[0030] The first and / or second return lines can each be formed from separate conduits extending from the machine assembly connected to the respective return line to the first and / or second return ports. Alternatively, and particularly, when the first and second return lines are connected to the same machine assembly, they can be formed from a common conduit extending from the machine assembly to the first and / or second return ports. The first and / or second return lines can be, for example, closed conduits within an assembly housing or, for example, open conduits. In the case of open conduits, fluid can flow freely, for example, through the respective assembly housing to a housing, particularly a reservoir. The housing can be implemented below one or more machine assemblies, allowing fluid to flow toward the housing due to gravity.

[0031] The fluid delivery system may include a first pump and a second pump. The first pump preferably draws fluid from a reservoir and delivers it toward at least one machine component. The first pump is particularly a supply pump for supplying fluid to at least one machine component. The first pump may, for example, draw fluid from a reservoir, particularly a main oil sump, on its low-pressure side. Specifically, the first pump may, for example, draw fluid from the reservoir via a suction point on its low-pressure side. The first pump preferably delivers fluid to the machine component on its high-pressure side.

[0032] The second pump is preferably located downstream of the first pump. The second pump can draw fluid from the high-pressure side of the first pump. The second pump can also be located downstream of at least one machine component. For example, the second pump can draw fluid downstream of at least one machine component. The second pump can, for example, draw fluid from the housing on its low-pressure side. The second pump can also, in particular, draw fluid from the housing away from the reservoir on its low-pressure side. The second pump preferably delivers fluid to the reservoir, particularly the main oil collection tank of the reservoir, on its high-pressure side.

[0033] The first pump and the second pump can be driven by a common driver. Alternatively, the first pump may include its own driver, and the second pump may include its own driver. The drivers for the first pump and / or the second pump can be electric motors.

[0034] The fluid delivery system may also include a pump module for delivering fluid. A first pump and a second pump may be part of the pump module. The pump module can draw fluid from a suction point in a reservoir and supply it to machine components. The fluid delivery system also includes a driver for driving the pump module. The driver may, for example, include an electric motor. In an alternative embodiment, the driver may include the machine component to which fluid will be supplied.

[0035] The pump module may include a first inlet, a second inlet, a first outlet, and a second outlet. The first inlet and / or the second inlet are preferably located on the low-pressure side of the pump module. The first outlet and / or the second outlet may be located on the high-pressure side of the pump module.

[0036] The first inlet can be connected to, in particular, a first suction port of the housing, especially a direct connection. The pump module can, for example, draw fluid from the housing, particularly a reservoir, via the first suction port and the first inlet. The pump module can, in particular, draw fluid from the main oil sump via the first inlet and deliver it to the machine components via the first outlet. The second inlet is connected, for example, to a second suction port of the housing, especially a direct connection. The pump module can, for example, draw fluid from the housing via the second inlet and particularly via the second suction port.

[0037] The first outlet can be connected to the first pressure port of the housing, particularly in a direct connection. The second outlet is connected to the second pressure port of the housing, for example, particularly in a direct connection. The pump module can supply fluid to the housing, particularly the first pressure conduit within the housing, via the first pressure port and the first outlet. Alternatively, the first outlet can also be connected to a machine component via a pressure conduit bypassing the housing. The pump module can supply fluid to the housing, particularly a reservoir, via the second pressure port and the second outlet. By arranging the first pressure conduit within the housing, the fluid delivery system can be implemented in a particularly space-saving manner.

[0038] The pump module can, for example, draw fluid from the housing via a second inlet and discharge the fluid to a reservoir, particularly the main oil sump, via a second outlet. The pump module can, for example, draw fluid from the reservoir, particularly the main oil sump, via a first inlet and discharge the fluid to a machine component via a first outlet.

[0039] The pump module may include a first pump and a second pump. Alternatively, the pump module may include a multi-loop pump, particularly a dual-loop pump, which includes at least a first working flow and a second working flow. The pump module may, for example, include a two-stroke vane pump.

[0040] The first pump can, for example, draw fluid through a first inlet. The low-pressure side of the first pump can be fluidly connected to the first inlet of the pump housing. The first pump can discharge fluid through a first outlet. The first pump can be fluidly connected, particularly on its high-pressure side, to the first outlet of the pump module.

[0041] The second pump can, for example, draw fluid through a second inlet. The second pump can be particularly fluidly connected to the second inlet of the pump module on its low-pressure side. The second pump can discharge fluid through a second outlet. The second pump can particularly be fluidly connected to the second outlet on its high-pressure side.

[0042] The first pump and / or the second pump can be arranged in a pump housing. The first pump and the second pump can particularly be arranged in a common pump housing. The pump housing can also form the housing of the pump module. The pump housing can particularly be the housing of the pump module.

[0043] The pump housing can be implemented as a housing. The pump housing can be a separate pump housing from the housing. The pump housing can be connected to the housing, particularly by threads. The pump housing can, for example, be inserted into a receiving recess of the housing or connected to the outside of the housing. The pump housing can also be constructed spaced apart from the housing, such that the housing and the pump housing are connected to each other, for example, only through a fluid passage.

[0044] The driver for the pump module, particularly for the first and / or second pump, can also be constructed within the pump housing. The driver can drive the first and / or second pump. Preferably, the driver can drive both the first and second pumps. The pump module and driver can be implemented together within a separately formed pump housing. The pump housing can be connected to the housing, particularly threadedly connected to the housing.

[0045] The first and / or second pumps may be formed from rotary pumps. In particular, the first and / or second pumps may be formed from internal gear pumps. In alternative embodiments, the first and / or second pumps may also be formed from vane pumps, oscillating slider pumps, or other rotary pumps.

[0046] The first and second pumps can have the same design: for example, both the first and second pumps can be formed from an internal gear pump, a vane pump, or a swashplate pump. In alternative embodiments, the first and second pumps can have different designs: for example, the first pump can be formed from an internal gear pump, while the second pump can be formed from a vane pump. In alternative embodiments, the first pump can also be formed from a vane pump, and the second pump can also be formed from an internal gear pump.

[0047] The first pump and the second pump may include the same drive. The rotors of the first pump and the second pump may, in particular, include a common drive shaft. The rotor of the first pump may be arranged on the same drive shaft as the rotor of the second pump. The drive shaft may be driven by the drive or may be part of the drive.

[0048] The pump module may include a first working flow extending from a first inlet to a second outlet. The pump module may also include a second working flow extending from a second inlet to a second outlet. The first and second working flows may be fluidly separated from each other. The first pump is preferably implemented within the first working flow. Specifically, the working cycle of the first pump preferably forms the first working flow of the pump module. The second pump is preferably implemented within the second working flow. Specifically, the working cycle of the second pump preferably forms the second working flow of the pump module.

[0049] The pump module can be implemented as a multi-flux pump module, particularly a multi-loop pump module. More specifically, it can be implemented as a dual-flux pump module, especially a dual-loop pump module. In a multi-flux implementation, the first outlet of the pump module can be a shared outlet for multiple flow streams and / or the first inlet can be a shared inlet for multiple flow streams. Conversely, in a multi-loop implementation, the individual flow streams are sealed to each other; that is, each flow stream has its own inlet and its own outlet.

[0050] The pump module can be implemented as a multi-loop pump module, particularly a dual-loop pump module, which includes a first working flow and a second working flow. Preferably, the first working flow and the second working flow are fluidly and sealingly isolated. A first inlet can form an inlet for the first working flow, and a second inlet can form an inlet for the second working flow. A first outlet can form an outlet for the first working flow, and a second outlet can form an outlet for the second working flow.

[0051] The first working flow preferably includes a first low-pressure side and a first high-pressure side. The first low-pressure side extends upward from the reservoir into the delivery chamber of the first pump. The first high-pressure side extends upward from the delivery chamber of the first pump into the reservoir. The second working flow may include a second low-pressure side and a second high-pressure side. The second low-pressure side extends upward from the housing into the delivery chamber of the second pump. The second high-pressure side extends upward from the delivery chamber of the second pump into the reservoir. The second low-pressure side may be configured downstream of the first high-pressure side, meaning that the second working flow can draw fluid from the high-pressure side of the first working flow on its low-pressure side.

[0052] The first working flow may, for example, draw fluid from a reservoir, particularly a main oil tank, on a first low-pressure side. Specifically, the first working flow may draw fluid from the reservoir via a suction point on the first low-pressure side. The first working flow preferably delivers fluid to machine components on its first high-pressure side.

[0053] The second working flow can, for example, draw fluid from the housing on the second low-pressure side. In particular, the second working flow preferably draws fluid from the housing on the second low-pressure side, away from the reservoir. The second working flow preferably delivers fluid to the reservoir, especially the main oil collection tank of the reservoir, on the second high-pressure side.

[0054] The first pump is preferably used to supply fluid to the machine components. The first pump can particularly draw fluid from a reservoir, especially the main sump, and direct it toward the machine components. The second pump can be implemented as a bilge pump. The second pump can particularly deliver fluid into a reservoir, especially the main sump. The second pump can deliver fluid located inside the hull and outside the main and / or auxiliary sump to the reservoir, especially the main sump. The second pump preferably delivers fluid located inside the hull and outside the reservoir to the reservoir, especially the main sump. The second pump can draw fluid from the machine components into the hull via a second return port.

[0055] The fluid delivery system may include a supply stream and a branch stream. The branch stream delivers, for example, a portion of the fluid returning to the housing from the supply stream. The supply stream, particularly a portion not delivered by the branch stream, and the branch stream can converge in a reservoir, particularly in the main sump. The fluid of the supply stream and the fluid of the branch stream are preferably mixed in the reservoir, particularly in the main sump. The supply stream is preferably formed by the circulation of fluid from a first working stream. The branch stream is preferably formed by the circulation of fluid from a second working stream. Preferably, a first pump delivers the fluid of the supply stream and / or a second pump delivers the fluid of the branch stream.

[0056] The supply flow is particularly understood as a fluid circulation, especially a volumetric flow, for supplying at least one machine component. The supply flow is particularly understood as a fluid circulation for supplying fluid from a reservoir to at least one machine component; that is, the supply flow is formed, in particular, by a fluid circulation flowing upward from the reservoir via a pump module and the machine component into the reservoir and into the reservoir. A first pump is preferably used to convey the fluid of the supply flow; that is, the fluid circulation of the first pump preferably forms the supply flow.

[0057] Downstream of the reservoir, the supply flow can be split into at least two supply branches for supplying fluid to one or more machine components. Specifically, the supply flow can be split into a first supply branch and a second supply branch downstream of the reservoir. The supply flow can also be split into at least two supply branches upstream of at least one machine component. The first supply branch can supply fluid to, for example, one machine component, and the second supply branch can supply fluid to the same or different machine components. Here, in the case of a machine component such as an electric motor, the first supply branch can supply fluid to a transmission, and the second supply branch can supply fluid to the electric motor, particularly the drive shaft.

[0058] Two supply branches can flow back into the housing, particularly the reservoir, from the machine components at different locations. Specifically, the first supply branch can flow back into the housing via a first return line, and the second supply branch can flow back into the housing via a second return line. In an alternative embodiment, the first and second supply branches can flow back into the housing via a common return line. Before flowing back into the housing, particularly the reservoir, the supply branches can be specifically recombined into a single supply flow and flow back into the housing, particularly the reservoir, via a first return port and / or a second return port.

[0059] The supply branches can differ in size, meaning that the volumetric flow rates of each supply branch can be different. The first supply branch can, in particular, be larger than the second supply branch. In alternative embodiments, the supply branches can be of equal size. The volumetric flow rates of each supply branch can, in particular, each have the same size.

[0060] A tributary is preferably understood to refer to a fluid circulation, particularly a volumetric flow, used for circulating fluid. The fluid in the tributary is transported from the hull to the reservoir, particularly from a location remote from the reservoir, i.e., the tributary is preferably formed by a fluid circulation that flows from the hull into the reservoir, particularly remote from the reservoir, via a pump module. Through this tributary, fluid can be drawn from the hull, particularly from a location remote from the reservoir, and supplied to the reservoir. The tributary can also be referred to, in particular, as a bilge flow. A second pump is preferably used to transport the fluid in the tributary; i.e., the fluid circulation of the second pump preferably forms the tributary.

[0061] The branch can specifically draw fluid from the supply stream, particularly from the second supply branch and / or the first supply branch, and direct it toward the reservoir. The branch particularly draws fluid from the supply stream downstream of the machine assembly. In a preferred embodiment, the branch draws fluid after the fluid from the second supply branch has flowed back into the housing, and particularly after the second supply branch has flowed back into the housing through the second return port.

[0062] The volumetric flow rate of the tributary can be less than the volumetric flow rate of the supply flow. The size of the tributary can be equal to the size of the second supply tributary. If the supply flow is divided into a first supply tributary and a second supply tributary, and if the two supply tributaries are of equal size, then the tributary is, for example, half the size of the supply flow. The volumetric flow rate of the tributary is particularly less than half the volumetric flow rate of the supply flow, that is, the amount of fluid transported in the tributary can be less than the amount of fluid in the supply flow, and can particularly correspond to less than half the amount of fluid in the supply flow, that is, the second pump can particularly transport less fluid than the first pump. The second pump can particularly transport less than 50% of the fluid of the first pump. Conversely, the volumetric flow rate of the first pump can be twice the volumetric flow rate of the second pump.

[0063] The first inlet of the pump module can be fluidly connected to the reservoir via a first suction pipe. Specifically, the pump module can be connected to the main oil collection tank of the reservoir via the first suction pipe. The upstream end of the first suction pipe can enter the reservoir, particularly the main oil collection tank, via a suction point.

[0064] The first suction conduit can, for example, fluidly connect the first inlet of the pump module to the reservoir, particularly the main oil sump, via a first suction port. The upstream end of the first suction conduit preferably leads into the reservoir, particularly the main oil sump. The first outlet can be connected to at least one machine component via a first pressure conduit. Supply flow can, in particular, flow from the reservoir through the first suction conduit and the first pressure conduit to at least one machine component.

[0065] The first pressure conduit may be formed within or on the housing. The first pressure conduit may be formed wholly or partially between a first housing component and a second housing component. The first pressure conduit may be formed wholly or partially by the first housing component and / or the second housing component. In a preferred embodiment, the first pressure conduit is formed wholly or partially by the first housing component and the second housing component. The first pressure conduit may particularly comprise multiple sections. The pressure conduit may be formed at least partially by the housing. A portion of the pressure conduit may, for example, be formed wholly or partially by the housing.

[0066] The first pressure conduit preferably connects the first outlet of the pump module to at least one machine component. The pump module is preferably capable of drawing fluid from a reservoir via a first inlet and a first suction conduit, and supplying the fluid to the machine component via the first outlet and the first pressure conduit. The fluid is preferably capable of flowing via the first pressure conduit to a supply location within the machine component.

[0067] The first pressure conduit can be specifically divided into a first supply conduit and a second supply conduit downstream of the first outlet. The first and second supply conduits can be considered as part of the first pressure conduit. The first supply conduit can, for example, be connected to a first machine component. The second supply conduit can, for example, be connected to a second machine component. The supply flow can be specifically distributed between the first and second supply conduits.

[0068] Preferably, the second inlet is fluidly connected to the housing via a second suction conduit. The second suction conduit extends upward from the second inlet via a second suction port to the upstream end of the second suction conduit. Preferably, the second suction conduit fluidly connects the second inlet of the pump module to the housing. The second working flow can specifically draw fluid from the housing via the second suction conduit on the second low-pressure side.

[0069] The second outlet can be fluidly connected to the reservoir via a second pressure conduit. The downstream end of the second pressure conduit can specifically lead into the main oil sump of the reservoir. The second pressure conduit preferably connects the second outlet of the pump module to the reservoir. The second pressure conduit can extend upward from the second outlet to the reservoir and enter the reservoir via a second pressure port. The second working flow can discharge fluid to the reservoir, especially the main oil sump, particularly via the second pressure conduit on the second high-pressure side.

[0070] The upstream end of the second suction pipe may extend into the housing at a distance from the downstream end of the second pressure pipe. Specifically, the upstream end of the second suction pipe does not enter the reservoir. Preferably, the upstream end of the second suction pipe appears within the housing, away from the main and / or auxiliary oil collection tanks. A branch flow may, for example, pass through the second suction pipe and the second pressure pipe.

[0071] In a preferred embodiment, the upstream end of the second suction pipe enters the housing near the second return port, particularly downstream of the second return port. The upstream end of the second suction pipe preferably enters the housing on the side of the second return port facing away from at least one machine component. The upstream end of the second suction pipe is particularly constructed on the side of the screen of the second return port facing away from at least one machine component.

[0072] In an alternative embodiment, the upstream end of the second suction pipe may lead into the first and / or second return lines near, and particularly upstream of, the second return port. The upstream end of the second suction pipe may lead into the first and / or second return lines on the side of the second return port facing at least one machine component. The upstream end of the second suction pipe may particularly be constructed on the side of the screen of the second return port facing at least one machine component.

[0073] In a preferred embodiment, fluid returning from the machine component via the second return port can flow into the reservoir, particularly the main oil sump, via the second suction pipe, the pump module (especially the second pump), and the second pressure pipe. The fluid returning from the machine component via the second return port can be delivered / pumped to the reservoir, particularly the main oil sump, via the pump module, particularly the second pump, specifically via the second suction pipe and the second pressure pipe. Thus, fluid is actively supplied to the reservoir, particularly the main oil sump, via the pump module, particularly the second pump.

[0074] If the machine component is the engine and / or transmission of a motor vehicle, the advantage is that fluid is supplied to the main oil sump, particularly the suction point within the main oil sump, regardless of the vehicle's driving conditions. For example, if a driving condition occurs where fluid is forced out from the suction point, such as into the secondary oil sump, the second pump ensures continued fluid supply to the suction point by circulating the fluid within its housing. This ensures that the fluid supply to the machine component is not interrupted.

[0075] The first suction conduit may be a conduit that is wholly or partially separated from the first housing component and the second housing component. The upstream end of the first suction conduit may lead into a reservoir, particularly into the main oil collection tank, and may extend downstream via the first suction port of the housing to the first inlet. The first suction port of the housing may be connected to the first inlet of the pump module, particularly fluidly, directly, or indirectly, for example, via a pipe section.

[0076] The first suction conduit may not be formed by the first housing component and / or the second housing component, or may not be substantially formed by the first housing component and / or the second housing component. In particular, the first suction conduit may be formed wholly or partially by a tubular portion formed separately from the first housing component and the second housing component. The first suction conduit may be formed wholly or at least partially by a separate tubular portion disposed between the first housing component and the second housing component. The first suction conduit may be formed wholly or partially by a tubular portion extending within the housing, particularly within the reservoir.

[0077] The upstream end of the tubing section can enter the reservoir. The upstream end of the tubing section can specifically represent the suction point. If the first suction conduit is entirely formed by the tubing section, the downstream end of the tubing section can be directly connected to the first inlet of the pump module. If the tubing section is directly connected to the first inlet of the pump module, the tubing section can protrude through the suction port of the housing and / or terminate flush with the suction port. The suction port can be formed by an opening in the housing through which the tubing section protrudes or adjacent to the opening.

[0078] If the first suction conduit is partially formed by a tube portion separate from the first and second housing components, the downstream end of the tube portion may abut the housing, particularly the suction port. The suction conduit may be partially formed by the tube portion and partially formed by a conduit within the housing. If the first suction conduit is partially formed by a channel within the housing, the tube portion may abut the channel. If the first suction conduit is partially formed by a channel within the housing and partially formed by the tube portion, the tube portion may be at least two times, particularly at least three times, the length of the channel within the housing. At least half, particularly at least two-thirds, of the first suction conduit may be formed by the tube portion.

[0079] The tube section can be rigid or flexible. For example, it can be formed from a flexible or rigid tube. The cross-section transverse to the flow direction of the tube section can have the same shape and size along its entire length, or it can vary longitudinally. The cross-section transverse to the flow direction of the tube section can be of any shape; it can be particularly circular, especially circular, elliptical, or angular. The tube section can be made of the same material as the shell, or of a different material.

[0080] The fluid delivery system may include a filtration module comprising at least one filter. The filtration module can filter particles from the fluid that could damage, for example, the engine and / or transmission of a motor vehicle. The filtration module may include a bypass valve. The bypass valve may have a first valve position and a second valve position. In the first valve position, the bypass valve preferably does not allow any fluid to flow through it. In the second valve position, the bypass valve allows fluid to flow through it, particularly bypassing the filter. When the fluid is viscous, the bypass valve preferably takes the second valve position. If the fluid delivery system is, for example, a fluid delivery system for supplying oil to an engine, the bypass valve takes the second valve position, for example, when the engine is started.

[0081] The filter module can be constructed separately from the pump housing and / or casing. The filter module can be connected to the pump housing, particularly via a threaded connection. The filter module, especially a filter, can be implemented within or on the pump housing. The pump module and filter module can preferably form a pump-filter module together. The filter module can particularly be constructed on the side of the first and / or second pump of the pump module away from the drive. The filter module can be an oil filter, particularly an oil filter for motor vehicles. The filter module can be a deep-bed filter.

[0082] The filter module can be designed to capture 20% of particles larger than 6 μm, meaning it exhibits a 20% separation efficiency for particles larger than 6 μm. Specifically, the filter module can be designed to capture 65% of particles larger than 14 μm, meaning it exhibits a 65% separation efficiency for particles larger than 14 μm. The filter module is preferably the main filter of a fluid transport system.

[0083] A filter module can be constructed on the high-pressure side or the low-pressure side of the first pump. The filter module can particularly be located upstream or downstream of the first working flow. The filter module can be constructed downstream of the first working flow, particularly on the first high-pressure side. The filter module can particularly be implemented downstream of the first outlet of the pump module. The filter module can be implemented in a first pressure line and / or fluid can be supplied to the filter module through the first pressure line. The fluid can particularly be delivered by the first pump through the filter module.

[0084] Alternatively, a filter module can be located upstream of the first working flow, particularly on the first low-pressure side. Specifically, the filter module can be located upstream of the first inlet of the pump module. The filter module filters the fluid in the supply flow. It can also filter fluid upstream of the machine components. This protects the machine components from wear caused by dust particles.

[0085] In an alternative implementation, a filtration module can be implemented downstream of the machine component; in particular, the filtration module can filter the fluid supplying downstream of the machine component. This allows, for example, the fluid to be filtered before it flows back into the reservoir if it has been contaminated by the machine component.

[0086] The filtering module can be implemented, in particular, downstream or upstream of the machine component, and filters the fluid in the supply flow. If the supply flow is split into supply branches downstream of the reservoir (e.g., into a first supply branch and a second supply branch), the filtering module can filter the fluid in the supply flow before the branches are separated. Alternatively, the filtering module can filter the fluid in the supply branches. If the supply flow is split into supply branches downstream of the reservoir (e.g., into a first supply branch and a second supply branch), the filtering module can, for example, filter the fluid in either the first or second supply branch. The filtering module is particularly capable of filtering the fluid via the branches before the fluid in the first and / or second supply branches flows back into the reservoir.

[0087] A filter module can be implemented on either the high-pressure or low-pressure side of the second pump. The filter module can be located, for example, upstream or downstream of the second pump, particularly the second working flow. The filter module can be located downstream of the second working flow, especially on the second high-pressure side. Alternatively, the filter module can be located upstream of the second working flow, particularly on the second low-pressure side. The second working flow preferably delivers the fluid of a branch flow. The fluid of the branch flow can correspond entirely or partially to the fluid of the second or first supply branch flow before flowing back into the reservoir. Alternatively, the fluid of the branch flow can correspond to a portion of the fluid of the first and second supply branches. The fluid can be delivered by the second pump through the filter module.

[0088] A filter module can, for example, filter the fluid in a tributary. If the filter module filters the fluid in a tributary, the filter module is preferably implemented upstream of the second pump. Because the fluid in the supply stream (especially the first supply tributary) and the fluid in the tributary (especially the fluid in the second supply tributary) converge and / or mix with each other in the reservoir (especially the main oil tank), the fluid in the fluid delivery system is filtered as a whole over time.

[0089] If the supply stream is split into supply branches downstream of the reservoir and the filter module filters the fluid in the branch, then a filter module or auxiliary filter module cannot be implemented upstream of the point where the supply streams are split. If an auxiliary filter module is implemented upstream of the point where the supply streams are split, the auxiliary filter module can specifically separate larger and / or fewer particles from the fluid than the filter module in the branch; that is, the separation efficiency of the auxiliary filter module is preferably lower than that of the filter module in the branch. The auxiliary filter module can be specifically designed to capture less than 20% of particles larger than 6 μm. The auxiliary filter module can be specifically designed to capture less than 65% of particles larger than 14 μm.

[0090] Arranging the filter module in the tributary, particularly in the second suction pipe, has the advantage that the second pump, which specifically delivers the fluid of the tributary, passes the fluid through the filter module, specifically the filter. This reduces the pressure drop in the supply stream. Another advantage is that the first pump does not need to exert as much power. This results in power savings within the overall fluid delivery system.

[0091] If the filter module is implemented in a branch flow, a bypass valve can be omitted, for example. The bypass valve ensures that fluid is supplied to the machine components even if the filter module is blocked, for example. By arranging the filter module in a branch flow, the supply flow ensures that fluid is supplied to the machine components. By omitting the bypass valve or otherwise ensuring fluid supply, the fluid delivery system can, for example, be manufactured more cost-effectively.

[0092] The fluid transport system may include at least one heat exchanger. The heat exchanger may be implemented as a supplement to or replacement for a filtration module. The heat exchanger may be implemented separately from the pump housing and / or casing. The heat exchanger may be disposed on or within the casing. Alternatively, the heat exchanger may be implemented on or within the pump housing. The heat exchanger may be connected to the casing, particularly by a threaded connection. The heat exchanger and casing preferably together form a cooling trough module.

[0093] The heat exchanger can be fluidly connected to the reservoir. In particular, the heat exchanger can be fluidly connected to a main oil sump and / or a secondary oil sump. In a preferred embodiment, the heat exchanger is fluidly connected to the main oil sump. In the heat exchanger, heat is transferred between the fluid supplied for supplying machine components and the fluid in the heat exchanger, specifically a coolant. The heat exchanger can be used to cool the fluid supplied for machine components, particularly oil used for cooling and / or lubricating the machine components.

[0094] A heat exchanger can be implemented on the high-pressure side or the low-pressure side of the first pump. The heat exchanger can be implemented, in particular, upstream or downstream of the first operating flow. The heat exchanger can be implemented downstream of the first operating flow, particularly on the first high-pressure side. The heat exchanger can be implemented, in particular, downstream of the first outlet of the pump module.

[0095] Alternatively, a heat exchanger can be implemented upstream of the first operating flow, particularly on the first low-pressure side. The heat exchanger can be positioned upstream of the first inlet of the pump module. The heat exchanger can cool the fluid supplying the flow. The heat exchanger can also cool fluid upstream of machine components. In this way, for example, machine components can be cooled.

[0096] In alternative embodiments, the heat exchanger can be implemented upstream or downstream of the second operating flow. The heat exchanger can be implemented particularly downstream of the second operating flow, especially on the second high-pressure side. Alternatively, the heat exchanger can be implemented upstream of the second operating flow, particularly on the second low-pressure side. The heat exchanger can cool the fluid in the branch flow. Because the fluid in the supply flow (especially the fluid in the first supply branch) and the fluid in the branch flow (especially the fluid in the second supply branch) converge and / or mix with each other in the reservoir (especially the main oil tank), the fluid in the fluid transport system as a whole is cooled over time.

[0097] If the fluid transport system includes a filtration module in addition to a heat exchanger, both the filtration module and the heat exchanger can be implemented in the supply stream or the tributary stream. The heat exchanger and / or filtration module can be implemented specifically in the supply stream. The heat exchanger and / or filtration module can also be implemented in the tributary stream.

[0098] In one implementation, a heat exchanger and a filter module can be implemented in the supply flow, wherein the filter module and / or heat exchanger can be implemented downstream of the pump module, particularly the first pump. The filter module and / or heat exchanger can also be implemented upstream of the pump module, particularly the first pump. One of the filter module and heat exchanger can also be implemented upstream of the pump module, particularly the first pump, while the other is implemented downstream of the pump module, particularly the first pump. If both the heat exchanger and the filter module are implemented in the same process, the filter module can be implemented upstream of the heat exchanger. Alternatively, the heat exchanger can be implemented upstream of the filter module.

[0099] In an alternative implementation, the heat exchanger and filter module can be implemented in the branch. The filter module and / or heat exchanger can be implemented downstream of the pump module, particularly the second pump. Alternatively, the filter module and / or heat exchanger can also be implemented upstream of the pump module, particularly the second pump. The filter module is preferably implemented upstream of the heat exchanger. Alternatively, the heat exchanger can be implemented upstream of the filter module. One of the filter module and heat exchanger can also be implemented upstream of the pump module, particularly the second pump, while the other is implemented downstream of the pump module, particularly the second pump.

[0100] In another embodiment, one of the heat exchanger and the filter module may be implemented in a branch stream, while the other is implemented in the supply stream. The heat exchanger and / or filter module may be implemented upstream or downstream of the first pump and / or the second pump. Specifically, the filter module may be implemented in a branch stream downstream or upstream of the second pump, while the heat exchanger may be implemented in a supply stream downstream or upstream of the first pump. Alternatively, the filter module may be implemented in a supply stream downstream or upstream of the first pump, while the heat exchanger may be implemented in a branch stream downstream or upstream of the first pump. Attached Figure Description

[0101] The invention will now be described based on exemplary embodiments. The features disclosed in the exemplary embodiments advantageously form the subject matter of the claims and the above-described embodiments. The accompanying drawings illustrate:

[0102] Figure 1 It is a 3D diagram of a fluid transport system;

[0103] Figure 2 This is a perspective view of the first housing component;

[0104] Figure 3 This is a perspective view of the second housing component;

[0105] Figure 4 This is a hydraulic circuit diagram of the first exemplary embodiment;

[0106] Figure 5 This is a hydraulic circuit diagram of the second example implementation;

[0107] Figure 6 This is a hydraulic circuit diagram of the third example implementation.

[0108] List of reference numerals

[0109] 1. Shell

[0110] 2 Pump housing

[0111] 3 drives

[0112] 4 heat exchangers

[0113] 5 Filter Modules

[0114] 6 temperature sensors

[0115] 11 Main oil collection tank

[0116] 12 oil collection tanks

[0117] 13 baffles

[0118] 20 First Pump

[0119] 21 First suction pipe

[0120] 21' First suction port

[0121] 22 First Pressure Pipeline

[0122] 22a First section of the first pressure pipeline

[0123] 22b First pressure pipeline, second section

[0124] 22' First pressure port

[0125] 23a First supply pipeline / first pressure pipeline, third section

[0126] 23b Second supply pipeline / fourth section of the first pressure pipeline

[0127] 25a First Return Pipeline

[0128] 25b Second Return Line

[0129] 25A First Return Port

[0130] 25B Second Return Port

[0131] 30 Second Pump

[0132] 31 Second suction pipe

[0133] 31' Second suction port

[0134] 32 Second Pressure Pipeline

[0135] 32' Second Pressure Port

[0136] 41 First Cooling Pipe

[0137] 42 Second Cooling Pipe

[0138] 70 discharge screw

[0139] 72 emission outlets Detailed Implementation

[0140] Figure 1 A perspective view of a fluid delivery system for supplying fluid to at least one machine component A is shown. The at least one machine component A, not shown, may be an engine and / or transmission of a motor vehicle. Machine component A may, in particular, be an electric motor of the motor vehicle, comprising an electric motor for driving the motor vehicle and a transmission for reducing the speed of the electric motor. The fluid delivery system may be a fluid delivery system for supplying fluid, particularly oil for lubrication and / or cooling, to the engine and / or transmission of the motor vehicle.

[0141] according to Figure 1The fluid delivery system includes pump modules 20 and 30, a driver 3, a filter module 5, and a heat exchanger 4. The driver 3, filter module 5, and heat exchanger 4 are arranged as an example and can be placed elsewhere in the fluid delivery system or omitted entirely. Figure 1 As can be seen from the terminal, the driver 3 is preferably formed by an electric motor. The driver 3, pump modules 20 and 30, and filter module 5 together form a pump-filter module. The heat exchanger 4 and housing 1 together form a cooling tank module. The pump-filter module and the cooling tank module can each form a unit.

[0142] according to Figure 1 The fluid delivery system includes a housing 1, which includes reservoirs 11 and 12 for storing fluid. The housing includes a first housing component (particularly such as...). Figure 2 The housing cup shown) and the second housing component (especially such as Figure 3 (See the housing cover shown). The second housing component includes a first return port 25A and a second return port 25B. The first return port 25A and the second return port 25B are connected to a machine component A to be supplied. Specifically, the first return port 25A can be connected to a machine component A via a first return line 25a, and the second return port 25B can be connected to another machine component A via a second return line 25b.

[0143] Fluid can flow from the corresponding machine component A back into the housing 1 via the first return port 25A and the second return port 25B. Fluid can flow from machine component A, particularly the motor's transmission, back into the reservoirs 11 and 12 via the first return port 25A. Fluid can flow back from machine component A, particularly the motor's drive, into the housing 1 via the second return port 25B. The first return port 25A and / or the second return port 25B can also be alternatively implemented in the first housing component.

[0144] Pump modules 20 and 30 include a first pump 20 (not shown in detail) and a second pump 30 (not shown in detail). The first pump 20 and the second pump 30 are disposed within a common pump housing 2. The first pump 20 and / or the second pump 30 are preferably rotary pumps, particularly internal gear pumps. However, the invention does not limit the design of the pumps; for example, they can also be implemented as vane pumps, etc. The first pump 20 and the second pump 30 can also be formed from different pumps.

[0145] exist Figure 1In this exemplary embodiment, a heat exchanger 4 is implemented in addition to the filter module 5. The heat exchanger 4 is implemented separately from the pump housing 2 and the housing 1. The heat exchanger 4 is implemented on and connected to the housing 1, particularly by threads. The heat exchanger 4 includes a first cooling conduit 41 and a second cooling conduit 42, through which coolant can flow into the heat exchanger 4 and out of the heat exchanger 4 via the second cooling conduit 42. In an alternative embodiment, the heat exchanger 4 may also be implemented as an air cooler.

[0146] The filter module 5 is connected to the pump housing 2, and / or the housing of the filter module 5 and the housings of the pump modules 20 and 30 form the pump housing 2. That is, the pump housing 2 can be formed from multiple housing components, one of which can be formed from the housing of the filter module 5. The filter module 5 includes a filter (not shown in detail) that filters the fluid as it flows through it.

[0147] exist Figure 1 In this embodiment, not only the filter module 5 but also the driver 3 is connected to the pump housing 2, and / or the housing of the driver 3 and the housings of the pump modules 20 and 30 together with the housing of the filter module 5 form the pump housing 2. The driver 3 is disposed on the side of the pump modules 20 and 30 opposite to the filter module 5, that is, the pump modules 20 and 30 are disposed between the filter module 5 and the driver 3.

[0148] Figure 2 and Figure 3 Shown in 3D Figure 1 The housing 1, particularly the first housing component and the second housing component. Reservoirs 11 and 12 can be formed from the first housing component and the second housing component, particularly in a closed configuration. The first housing component is implemented in the form of a housing cup. The first housing component is particularly shaped to resemble an oil pan, particularly a flat oil pan. The second housing component is implemented in the form of a housing cover, which can be attached to the first housing component.

[0149] The first housing component and the second housing component can be connected to each other by a material fit. The first housing component and the second housing component can be glued or welded to each other, particularly at their facing end faces. Alternatively or additionally, the first housing component and the second housing component can be screwed to each other or connected to each other by force fit and / or form fit.

[0150] Reservoirs 11 and 12 are disposed between a first housing component and a second housing component. Reservoirs 11 and 12 are specifically surrounded by the first and second housing components. A baffle 13 formed in the first housing component subdivides reservoirs 11 and 12 into a main oil collection tank 11 and a secondary oil collection tank 12. The main oil collection tank 11 and the secondary oil collection tank 12 are fluidly connected to each other via the baffle 13. Fluid can flow from the main oil collection tank 11 into the secondary oil collection tank 12, specifically bypassing the baffle 13, and vice versa. A drain port 72 is provided in the secondary oil collection tank 12, particularly at its bottom, through which fluid can be discharged from reservoirs 11 and 12, for example, for fluid replacement. The drain port 72 can be closed, for example, by a drain screw 70.

[0151] Casing 1, in particular Figure 3 The second housing component includes a first suction port 21' and a second suction port 31'. The housing 1, and particularly the second housing component, also includes a first pressure port 22' and a second pressure port 32'. The first suction port 21' is preferably connected to the reservoirs 11, 12, particularly the main oil collection tank 11, via a first suction pipe 21. The second suction port 31' is preferably connected to the housing 1, away from the reservoirs 11, 12, via a second suction pipe 31. The second suction port 31' is particularly fluidly connected to the second return port 25B via the second suction pipe 31. The upstream end of the second suction pipe 31 appears on the side of the second return port 25B opposite to machine assembly A.

[0152] The first pressure port 22' can be connected to machine component A via the first pressure conduit 22. The first pressure conduit 22 may include different sections, each of which may be implemented in or on the housing 1. The first pressure conduit 22 may be specifically divided downstream of the first pressure port 22' into a first supply conduit 23a and a second supply conduit 23b. The first supply conduit 23a and the second supply conduit 23b can be considered as parts of the first pressure conduit 22.

[0153] exist Figure 3 In this exemplary embodiment, the first pressure conduit 22 is implemented in a first portion 22a of the housing 1, leading from the first pressure port 22' to the heat exchanger 4. After flowing through the heat exchanger 4, fluid can flow through the housing 1 toward at least one machine component A via a first supply conduit 23a and a second supply conduit 23b. The second pressure port 32' can be fluidly connected to the reservoirs 11, 12, particularly the main oil collection tank 11, via the second pressure conduit 32.

[0154] The upstream end of the second suction pipe 31 appears near the second return port 25B, such as Figure 3 As shown. The upstream end of the second suction pipe 31 enters the housing 1 specifically below the second return port 25B.

[0155] The first suction port 21' is connected to the reservoirs 11 and 12, particularly the main oil collection tank 11, via the first suction pipe 21. For example, Figure 2 As shown, the first suction conduit 21 is not, or substantially not, formed by the first housing component and / or the second housing component. The first suction conduit 21 is partially formed by a pipe portion. The pipe portion of the first suction conduit 21 is formed separately from the first housing component and the second housing component. The pipe portion of the first suction conduit 21 is arranged between the first housing component and the second housing component. The upstream end of the pipe portion of the first suction conduit 21 opens into the main oil collecting tank 11, and its downstream end opens into the first housing component. Alternatively, the upstream end of the pipe portion of the first suction conduit 21 may open into the main oil collecting tank 11, and its downstream end may open into the second housing component. The upstream end of the first suction conduit 21, particularly the pipe portion of the first suction conduit 21, forms a suction point through which fluid can be drawn from the main oil collecting tank 11.

[0156] The portion of the first suction conduit 21 that is not formed by the tube portion is formed by a channel in the first housing component into which the tube portion enters. The upstream end of the channel in the first housing component is connected to the tube portion, and its downstream end appears on the end face of the first housing component. A portion of the first suction conduit 21 is also formed by a channel in the second housing component, with its upstream end appearing on the end face of the second housing component and its downstream end forming the first suction port 21'.

[0157] like Figure 2 and Figure 3 As shown, the first suction conduit 21 may be formed primarily of a tube portion that is separate from the first housing component and the second housing component. Various portions of the first suction conduit 21 may also be formed of channels within the first housing component and / or the second housing component.

[0158] The first pressure conduit 22, and particularly its portions 22a, 22b, 23a, 23b, may be formed by a first housing component and / or a second housing component. The first housing component and / or the second housing component may, for example, be implemented as components, particularly portions, of the first pressure conduit 22. The first housing component and / or the second housing component may each include, for example, a channel portion opening toward the end face of the respective housing component, and when the two housing components are joined, form the first pressure conduit 22 or portions 22a, 22b, 23a, 23b of the first pressure conduit 22, wherein the two channel portions may overlap each other, or one channel portion may be closed by the other housing component. The first pressure conduit 22 may also be formed, for example, by channels in or through the first housing component and / or the second housing component.

[0159] exist Figure 2 and Figure 3 In an exemplary embodiment, a first portion 22a of the pressure conduit 22 is formed by a channel in the second housing component. The downstream end of this channel forms a first pressure port 22' and appears on the end face of the second housing component. A first supply conduit and / or a third portion 23a of the pressure conduit 22 is formed by a channel portion in the first housing component that opens on the end face of the first housing component and a channel portion in the second housing component that opens on the end face of the second housing component, wherein the two channel portions overlap each other when the two housing components are joined. A second supply conduit and / or a fourth portion 23b of the pressure conduit 22 is formed by a channel portion in the second housing component that opens at the end face of the second housing component and is closed by the first housing component when the two housing components are joined. The second portion 22a of the pressure conduit 22... Figures 1 to 3 Not shown in the diagram, and within the pump housing 2, extending from the outlet of the first pump 20, particularly the outlet of the first pump 20, via the filter module 5 to the first outlet of the pump modules 20, 30.

[0160] The second suction conduit 31 may be formed from a first housing component and / or a second housing component. The first housing component and / or the second housing component may, for example, be implemented as components, particularly portions, of the second suction conduit 31. The first housing component and / or the second housing component may, for example, each include a channel portion that opens toward the end face of the respective housing component, and when the two housing components are joined, form the second suction conduit 31 or a portion of the second suction conduit 31, wherein the two channel portions may overlap each other, or one channel portion may be closed by the other housing component. The second suction conduit 31 may also be formed, for example, from channels in or through the first housing component and / or the second housing component.

[0161] exist Figure 2 and Figure 3 In an exemplary embodiment, the second suction conduit 31 is formed by a channel portion in the first housing component and another channel portion in the second housing component, the channel portion opening toward the end face of the first housing component and the other channel portion opening toward the end face of the second housing component. When the housing 1 is assembled, the two channel portions overlap each other and form the second suction conduit 31 in this manner. The second suction conduit 31 also extends partially as a channel through the second housing component, wherein the downstream end of the channel forms a second suction port 31'.

[0162] The second pressure conduit 32 may be formed from a first housing component and / or a second housing component. The first housing component and / or the second housing component may, for example, be implemented as components, particularly portions, of the second pressure conduit 32. The first housing component and / or the second housing component may each include, for example, a channel portion that opens toward the end face of the respective housing component, and when the two housing components are joined, form the second pressure conduit 32 or a portion of the second pressure conduit 32, wherein the two channel portions may overlap each other, or one channel portion may be closed by the other housing component. The second pressure conduit 32 may also be formed, for example, from or through channels in the first housing component and / or the second housing component.

[0163] exist Figure 2 and Figure 3 In an exemplary embodiment, the second pressure conduit 32 is formed by a channel portion in the second housing component (which opens toward the end face of the second housing component) and a channel portion in the first housing component (which opens toward the end face of the first housing component). When the housing components are joined, the two channel portions overlap each other. The second pressure conduit 32 is also formed by a channel passing through the first housing component, the upstream end of which appears in the end face of the first housing component, and the downstream end of which appears in the reservoirs 11, 12, particularly in the main oil collection tank 11, wherein the point appearing at the downstream end overlaps with the channel portion in the second housing component. The second pressure conduit 32 also extends partly as a channel through the second housing component, wherein the upstream end of which forms a second pressure port 32'.

[0164] Pump modules 20 and 30 are preferably connected to housing 1 via a first suction port 21', a second suction port 31', a first pressure port 22', and a second pressure port 32'. Pump modules 20 and 30 can, in particular, draw fluid from reservoirs 11 and 12, especially the main oil collection tank 11, via a first suction pipe 21 and a first suction port 21', and discharge the fluid toward machine assembly A. The first pump 20 can be connected to reservoirs 11 and 12 via the first suction pipe 21. The second pump 30 can be connected to housing 1 via the second suction pipe 31.

[0165] For this purpose, pump modules 20 and 30 include a first inlet (not shown in detail) and a second inlet (not shown in detail). The first inlet may be fluidly connected to a first suction port 21'. The second inlet may be fluidly connected to a second suction port 31'. The first inlet and the first suction port 21' may be directly connected to each other such that the first inlet leads into the first suction port 21', and the first suction port 21' leads into the first inlet. Alternatively, the first inlet and the first suction port 21' may be connected to each other via a portion of a first suction conduit 21. The second inlet and the second suction port 31' may be directly connected to each other such that the second inlet leads into the second suction port 31', and the second suction port 31' leads into the second inlet. Alternatively, the second inlet and the second suction port 31' may be connected to each other via a portion of a second suction conduit 31.

[0166] Pump modules 20 and 30 preferably include a first outlet (not shown in more detail) and a second outlet (not shown in more detail). The first outlet may be fluidly connected to a first pressure port 22'. The second outlet may be fluidly connected to a second pressure port 32'. The first outlet and the first pressure port 22' may be directly connected to each other, such that the first outlet leads into the first pressure port 22' and the first pressure port 22' leads into the first outlet. Alternatively, the first outlet and the first pressure port 22' may be connected to each other via a portion of a first pressure conduit 22. The second outlet and the second pressure port 32' may be directly connected to each other, such that the second outlet leads into the second pressure port 32' and the second pressure port 32' leads into the second outlet. Alternatively, the second outlet and the second pressure port 32' may be connected to each other via a portion of a second pressure conduit 32.

[0167] Pump modules 20 and 30 preferably include a first working flow extending from a first inlet to a second outlet. Pump modules 20 and 30 also preferably include a second working flow extending from a second inlet to a second outlet. The first working flow is preferably formed by a first pump 20 (not shown in detail). The second working flow is preferably formed by a second pump 30 (not shown in detail). The first and second working flows are fluidly depicted relative to each other.

[0168] Figure 4 , Figure 5 and Figure 6 Hydraulic circuit diagrams for various implementations are shown. Figure 4 A first exemplary embodiment of a fluid transport system is shown. The fluid transport system can be configured according to... Figures 1 to 3 The implementation of the fluid transport system makes regarding Figures 1 to 3 The same applies to statements, as long as they are not contradictory.

[0169] The fluid delivery system includes: a housing 1 comprising reservoirs 11 and 12 for storing fluid; a first pump 20 and a second pump 30; a driver 3 for the first pump 20 and the second pump 30; and a machine assembly A. Machine assembly A may be constituted by an electric motor including an engine and a transmission. The first pump 20 and the second pump 30 preferably form pump modules 20 and 30 together with the driver 3. The first pump 20 and the second pump 30 are mounted on a common drive shaft and driven by the driver 3. The driver 3 may be formed by an electric motor.

[0170] The second pump 30 is located downstream of the first pump 20, meaning that the second pump 30 draws fluid from the high-pressure side of the first pump 20 on its low-pressure side. The second pump 30 is also located downstream of machine assembly A, meaning that the second pump 30 draws fluid flowing from machine assembly A to housing 1 on its low-pressure side.

[0171] Pump modules 20 and 30 include a first working flow formed by the first pump 20 and a second working flow formed by the second pump 30. The first and second working flows are fluidly separated from each other, such that pump modules 20 and 30 are configured as multi-loop pump modules, particularly dual-loop pump modules. The first working flow includes a first low-pressure side and a first high-pressure side. The second working flow includes a second low-pressure side and a second high-pressure side. The fluid circulation of the first working flow forms the supply flow of the fluid delivery system. The fluid circulation of the second working flow forms a branch flow of the fluid delivery system.

[0172] The first working flow is connected to the reservoirs 11 and 12, particularly the main oil collection tank 11, via a first suction pipe 21 on the first low-pressure side. On the first high-pressure side, the first working flow is fluidly connected to the machine assembly A via a second pressure pipe 22. Thus, the first pump 20 draws fluid from the reservoirs 11 and 12, particularly the main oil collection tank 11, and discharges it toward the machine assembly A. The fluid can flow from the machine assembly A back to the housing 1, particularly the reservoirs 11 and 12, via a first return line 25a and a second return line 25b.

[0173] In this exemplary embodiment, the supply flow within machine assembly A can be divided into a first supply branch and a second supply branch. The first supply branch flows back to the housing 1, specifically to the reservoirs 11 and 12, via a first return line 25a, and the second supply branch flows back to the housing 1, specifically to the reservoirs 11 and 12, via a second return line 25b. The first and second supply branches can supply fluid to different locations within the same machine assembly A or to different machine assemblies A. Alternatively, the supply flow can also supply fluid to only one location within machine assembly A and be separated until it flows back towards the housing 1.

[0174] In alternative exemplary embodiments, for example Figure 5 and Figure 6In an exemplary embodiment, the pressure conduit 22 may split into a first supply conduit 23a and a second supply conduit 23b upstream of machine component A. The first supply conduit 23a and the second supply conduit 23b may lead to the same machine component A or to different machine components A.

[0175] The second working flow is connected to the second return line 25b via the second suction pipe 31 on the second low-pressure side, specifically as a fluid connection. The upstream end of the second suction pipe 31 leads to the second return line 25b before the fluid flows into the reservoirs 11 and 12 through the equalization pipe. If the second pump 30 fails, for example, or if the suction rate of the second pump 30 becomes too low to suction all the fluid returning through the second return line 25b, the fluid flowing into the housing 1 via the second return line 25b and the second return port 25B can, in an emergency, be discharged into the reservoirs 11 and 12, specifically the auxiliary oil collection tank 12, via the equalization pipe.

[0176] For example, the second suction pipe 31 can be inserted into the housing 1 below the second return port 25B. Figures 1 to 3 As shown, the second return port 25B can be directed into the housing 1 away from the reservoirs 11 and 12, so that the fluid flowing into the housing 1 via the second return port 25B will not flow directly into the reservoirs 11 and 12. The upstream end of the second suction pipe 31 can be directed into the area of ​​the return port 25B. The second working flow is fluidly connected to the reservoirs 11 and 12, especially the main oil collection tank 11, through the second pressure channel 32 on the second high-pressure side.

[0177] Regardless of the implementation of the second suction pipe 31, the upstream end of the second suction pipe 31 enters the second return line 25b before the fluid flows into the reservoirs 11 and 12. That is, the second pump 30 draws the fluid flowing back from the machine assembly A and supplies it to the reservoirs 11 and 12, particularly the main oil collection tank 11, via the second pressure pipe 32.

[0178] To illustrate the principle of actively supplying fluid to the reservoirs 11 and 12 using the second pump 30, particularly the main oil collection tank 11, from... Figure 4 The filter module 5 and / or heat exchanger 4 are omitted from the diagram. This is merely for illustrative purposes. The filter module 5 can then be installed in the supply stream, for example, upstream or downstream of pump modules 20, 30. The filter module 5 can also be implemented in a branch stream, for example. In addition to or as a replacement for the filter module 5, the heat exchanger 4 can also be implemented upstream or downstream of pump modules 20, 30.

[0179] Figure 5 A fluid transport system is shown, for example, which includes a heat exchanger 4 implemented in the supply stream and a filter module 5 implemented in the supply stream. This relates to the principle of actively supplying fluid to the reservoirs 11, 12, and particularly the main oil collection tank 11. Figure 5 Fluid transport system and Figure 4 The exemplary implementation is no different. Accordingly, the provisions regarding... Figure 4 The instructions provided. The fluid transport system can be based on... Figures 1 to 3 The implementation of the fluid transport system makes regarding Figures 1 to 3 The same applies to statements, as long as they are not contradictory.

[0180] like Figure 5 As shown, the heat exchanger 4 and the filter module 5 are arranged in the supply flow, particularly in the first pressure conduit 22. Fluid flows from the pump modules 20, 30 through the first pressure conduit 22, particularly the first section 22a of the pressure conduit 22, to the heat exchanger 4. Alternatively, the heat exchanger 4 may also be arranged in the first suction conduit 21.

[0181] According to Figure 1 In the case of the fluid transport system, fluid flows from pump modules 20 and 30 back to housing 1 via the first pressure port 22', whereby the fluid is guided to heat exchanger 4 via the first portion of pressure pipe 22a. In heat exchanger 4, the fluid used to supply machine component A discharges heat energy to the fluid in heat exchanger 4, particularly the coolant, and is thus cooled. The fluid in heat exchanger 4 flows through heat exchanger 4, wherein the two fluids do not mix. The fluid in heat exchanger 4 flows into heat exchanger 4 via the first cooling pipe 41 and exits heat exchanger 4 via the second cooling pipe 42.

[0182] After the fluid used to supply machine component A has flowed through heat exchanger 4, it continues to flow toward machine component A and filter module 5 via the second section 22b of the first pressure conduit 22. A sensor 6, specifically a temperature sensor 6 for measuring the fluid temperature, may be implemented in the second section 22b of the first pressure conduit 22.

[0183] Following heat exchanger 4, fluid flows through filter module 5. Filter module 5 includes a filter. Filter module 5 also includes a bypass valve having a first valve position and a second valve position. In the first valve position, the bypass valve does not allow any fluid to flow through it. In the second valve position, the bypass valve allows fluid to flow through it, specifically bypassing the filter.

[0184] After flowing through filter module 5 Figure 5 The supply flow is divided into a first supply branch and a second supply branch, wherein the first supply branch supplies fluid to one or more machine components A via a first supply conduit 23a, and the second supply branch supplies fluid to one or more machine components A via a second supply conduit 23b. Thus, fluid can be supplied, for example, to two locations within machine component A and / or to two machine components A.

[0185] The order in which the fluid flows through heat exchanger 4 and filter module 5 can be reversed. Figures 1 to 3 In an exemplary embodiment, the fluid then flows, for example, first through the heat exchanger 4, and then through the filter module 5. Figure 1 In the process, fluid flows through the filter module 5, and then through the housing 1 via the first section 22a of the pressure pipe 22 to the heat exchanger 4. Figure 1 After the heat exchanger 4, the fluid returns to the housing 1, where it is split into two streams via the first supply pipe 23a and the second supply pipe 23b.

[0186] The heat exchanger 4 and the filter module 5 can also be arranged in the tributary of the fluid transport system, rather than in the supply stream.

[0187] Figure 6 Exemplary implementation methods and Figure 4 and Figure 5 The difference in the exemplary implementation is that the filter module 5 is arranged in the branch stream, while the heat exchanger 4 is arranged in the supply stream. Therefore, regarding Figures 1 to 5 The statements made are applicable, provided they are not contradictory.

[0188] Figure 6 The filter module 5 is located downstream of the second pump 30. Thus, the filter module 5 filters the fluid of the tributary. Since the fluid of the supply stream and the fluid of the tributary mix with each other in the reservoirs 11 and 12, the fluid of the fluid delivery system is filtered as a whole over time.

Claims

1. A fluid delivery system for supplying fluid to at least one machine component (A), said fluid delivery system comprising: First pump (20) and second pump (30); A driver (3) is used to drive the first pump (20) and / or the second pump (30). A housing (1), the housing (1) including reservoirs (11, 12), the reservoirs (11, 12) having a main oil collecting tank (11) and a secondary oil collecting tank (12) for storing fluid; and Filter module (5), the filter module (5) is used to filter fluid, Wherein, the first pump (20) delivers fluid in a supply flow from the main oil collection tank (11) to the machine assembly (A), and The supply flow downstream of the storage device is divided into at least a first supply branch and a second supply branch. The first supply branch supplies the machine component, and the second supply branch is fluidly separated from the first supply branch and is used to supply the same machine component or another machine component. The supply flow returns from the machine assembly to the housing via a first return branch and a second return branch. The second pump (30) is arranged downstream of the machine assembly (A) and, as a branch downstream of the machine assembly (A), delivers fluid from the second return branch located inside the housing (1) and outside the reservoir to the main oil collection tank (11). The first reflux branch and the branch are mixed in the main oil collecting tank (11), and The filtering module (5) is located in the tributary.

2. The fluid transport system according to claim 1, wherein, The machine component (A) is fluidly connected to the housing (1) via at least one return line, and the branch draws fluid from the return line (25b).

3. The fluid transport system according to claim 1, wherein, The fluid delivery system includes a multi-loop pump module, wherein the first pump (20) and the second pump (30) are part of the pump module.

4. The fluid transport system according to claim 1, wherein, There is no filter module or auxiliary filter module upstream of where the supply stream is split.

5. The fluid transport system according to claim 4, wherein, The auxiliary filtration module is disposed in the supply stream and separates larger and / or fewer particles from the fluid than the filtration module (5) of the tributary.

6. The fluid transport system according to claim 5, wherein, The fluid of the first supply branch and / or the second supply branch is filtered by the filter module (5) of the branch before it flows back to the reservoir (11, 12).

7. The fluid transport system according to claim 1, wherein, The filter module (5) is an oil filter for motor vehicles and separates at least 20% of particles larger than 6 μm and at least 65% of particles larger than 14 μm.

8. The fluid transport system according to claim 1, wherein, The housing (1) includes at least one return port (25A, 25B) that can be connected to the machine assembly (A), and the branch draws fluid on the side of the return port (25B) opposite to the machine assembly (A).

9. The fluid transport system according to claim 8, wherein, The return ports (25A, 25B) include screens on their side facing the machine assembly (A).

10. The fluid transport system according to claim 8, wherein, The second supply branch flows back into the housing (1) via the return port (25A, 25B) downstream of the machine component (A).

11. The fluid transport system according to claim 1, wherein, The fluid circulates through the tributary in the housing (1).

12. The fluid transport system according to claim 1, wherein, The volumetric flow rate of the supply stream is greater than the volumetric flow rate of the tributary and is at least twice the volumetric flow rate of the tributary.

13. The fluid transport system according to claim 1, wherein, The fluid delivery system includes a heat exchanger (4), and the heat exchanger (4) is arranged in the supply stream.

14. The fluid transport system according to claim 1, wherein, The at least one machine component (A) is the engine and / or transmission of a motor vehicle.

15. The fluid transport system according to claim 3, wherein, The multi-loop pump module is a dual-loop pump module.

16. The fluid transport system according to any one of claims 1-15, wherein, The fluid circulates through the tributary in the housing (1) and is delivered to the storage tanks (11, 12) from a location away from the storage tanks (11, 12).

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