DE102014010390A1 - Fluid system additive dispenser, fluid filter, and filter element / additive dispensing module - Google Patents

Abstract

There are an additive dispensing device (40) of a fluid system, in particular a filter (10) for the treatment of liquid, in particular oil, preferably engine oil, transmission oil or hydraulic oil, fuel, water or urea water solution, in particular an internal combustion engine, in particular a motor vehicle, a filter (10) and a filter element / additive dispensing module (62). The additive dispenser (40) comprises at least two additive chambers (53) for at least one additive. The additive chambers (53) each have at least one discharge opening (54) which can be fluidly connected to a liquid guide region (66) for the liquid to be treated of the liquid system (10). In the initial state of the additive dispenser (40), the dispensing openings (54) are each closed by at least one closure element (58) which at least partially opens the corresponding dispensing opening (54) during operation of the additive dispenser (40) by the liquid to be treated can be removed from the corresponding discharge opening (54). At least two of the discharge openings (54) and / or their closure elements (58) are configured and / or arranged differently so that the corresponding discharge openings (54) can be released simultaneously or at different times.

Description

Technical area

The invention relates to an additive dispensing device of a fluid system, in particular a filter, for the treatment of liquid, in particular oil, preferably engine oil, transmission oil or hydraulic oil, fuel, water or urea water solution, in particular an internal combustion engine, in particular a motor vehicle, with at least two additive chambers for at least one Additive, each having at least one discharge opening, which are fluidly connectable to a liquid guide region for the liquid to be treated of the liquid system and which are closed in the original state of the additive dispensing device respectively with at least one closure element, which for releasing the corresponding discharge opening during operation of the additive Dispensing device can be removed by the liquid to be treated at least partially from the corresponding discharge opening.

Furthermore, the invention relates to a filter for liquid, in particular oil, preferably engine oil, gear oil or hydraulic oil, fuel, water or urea water solution, in particular an internal combustion engine, in particular of a motor vehicle, with a filter housing, the at least one inlet and at least one outlet for the liquid to be treated and in which at least one filter element is arranged such that it separates the at least one inlet from the at least one outlet, and in which at least one additive dispenser, in particular an additive dispenser according to the invention is arranged, which at least two additive chambers for at least one Additive comprises, each having at least one discharge opening, which are fluidly connectable to a liquid guide region for the liquid to be treated of the filter and in the original state of the additive dispensing device each with at least one Versch Lusselement are closed, which can be removed for the release of the corresponding discharge opening during operation of the filter by the liquid to be treated at least partially from the corresponding discharge opening.

Moreover, the invention relates to a filter element / additive-dispensing module of a filter for the treatment of liquid, in particular oil, preferably engine oil, transmission oil or hydraulic oil, fuel, water or urea water solution, in particular an internal combustion engine, in particular a motor vehicle, with a filter element for the treatment Liquid and an additive dispensing device, in particular an additive dispensing device according to the invention, having at least two additive chambers for at least one additive, each having at least one dispensing opening, which are fluidly connectable to a liquid guide region for the liquid to be treated of the filter and the additive in the original state -Abgabevorrichtung are each closed with at least one closure element, which for releasing the corresponding discharge opening during operation of the additive dispensing device by the liquid to be treated at least partially from the corresponding discharge opening can be removed.

State of the art

From the DE 11 2007 002 57 T5 For example, a filter having a housing defining a fluid inlet port and a fluid outlet port is known. The fluid inlet port and the fluid outlet port define a fluid path through the filter. A filter element is arranged in the filter housing. The filter element is arranged in the flow path such that the fluid flowing through the fluid path must pass through the filter element. A dispersion device is disposed in the housing. The dispersion device has a housing which has at least one chamber for an additive accommodated in the at least one chamber. The dispersion device further includes an orifice which is sealed with an oil-soluble material. The orifice is in fluid communication with the at least one chamber when the oil-soluble material is removed from the orifice.

The invention has for its object to design an additive dispensing device, a filter and a filter element / additive delivery module of the type mentioned, in which / an additive delivery to the liquid can be improved.

Disclosure of the invention

This object is achieved according to the invention in the additive dispensing device in that at least two of the dispensing openings and / or their closure elements are configured differently and / or arranged such that the corresponding dispensing openings can be released simultaneously or at different times.

According to the invention, the discharge openings can be released under different conditions of the action of the liquid on the corresponding closure elements. The opening times of the at least two discharge openings may thus be different in particular depending on conditions of the liquid to be treated and / or action / presence of the liquid on the / at the discharge openings. This does not exclude that the Delivery openings under certain conditions can be released simultaneously. An opening of the discharge openings and thus an addition of the additives can also overlap. In this way, the respective additive from the corresponding additive chamber can be added as needed to the liquid to be treated. Advantageously, a control of the release of the delivery openings can be realized. The additives can be added more precisely, in particular with regard to the delivery time and / or the delivery quantity, as required to the liquid to be treated. Overall, so the conditioning of the liquid can be improved.

It can also be sequentially dosed additives whose simultaneous addition is not desired or required. Thus, the conditioning of the liquid can be further improved.

The conditions under which the discharge openings can be released can be characterized in particular by the beginning and / or the duration of the action of the liquid to be treated on the corresponding closure element and / or states of the liquid to be treated. Accordingly, the properties of at least one of the closure elements can be predetermined as required.

Advantageously, at least one closure element can be removed by means of at least partial dissolution and / or melting or in some other way at least partially or completely from the corresponding dispensing opening.

Advantageously, at least one of the closure elements can be designed such that its state can be changed with the liquid to be treated, in particular its shape can be dissolved. At least one of the closure elements may comprise or consist of a substance which can slowly dissolve and / or melt under the action of the liquid to be treated. In this case, the state change of at least one of the closure elements can be effected by physical and / or chemical means. At least one of the closure elements may advantageously have at least one material which can be dissolved and / or melted in or with the liquid to be treated.

At least one of the closure elements may advantageously comprise a temperature-soluble material, in particular thermoplastic, in particular a polyolefin, or wax. A temperature at which the at least one closure element dissolves can advantageously be in the range of the usual operating temperature of the liquid to be treated.

Advantageously, a size, in particular a surface facing the liquid guide region and / or a thickness, and / or a density of at least one of the closure elements can be predetermined. Advantageously, the size and / or the density of at least two of the closure elements may be different. By greater layer thicknesses of the closure elements, the duration of the action of the liquid, which is required until the corresponding discharge opening is released, can be delayed. Thus, various additives from different additive chambers can be selectively metered over the service life of the fluid system, in particular the additive dispensing device.

Advantageously, at least two of the closure elements can be designed and / or arranged differently and / or have different materials. In this way, the closure elements at different states or properties of the liquid can be at least partially removed, in particular dissolved and / or melted. Thus, variable times for dissolution of the closure elements can be realized.

Advantageously, the closure elements may be water-soluble. In this way, especially when using the additive dispenser for treating oil or fuel in the presence of water in the oil or fuel, an additive which can bind the water can be released.

The additive dispenser may be modular. So it can be assembled individually according to need according to a modular system.

The additive dispenser may include one or more additive containers in which the additive chambers are disposed.

The at least one additive container can advantageously comprise or consist of plastic, in particular polyamide.

The at least one additive container can advantageously have a round, oval or angular cross-section.

Both shape and material as well as content of the additive container, in particular the additive chambers, may be different.

Several additive containers may be interconnected. The additive containers can advantageously be realized as an additive container stack. Thus, the additive container can be easily pre-assembled and be arranged together in the fluid system.

For connecting at least two additive containers can advantageously be provided at least one rotary / plug-in connection. In particular, at least one locking connection, screw connection, plug connection and / or bayonet-type connection can be provided.

Advantageously, the connection components used for connecting the at least two additive containers, in particular latching webs and latching openings, can be separated from the fluid line components, in particular at least one dispensing opening cylinder, for realizing the dispensing openings. In this way, the mechanical connection and the fluid connection can be optimized separately from each other.

Advantageously, a single additive chamber can be arranged in at least one of the additive containers. In this way, the additive chamber can be easily filled in a pre-assembly with a corresponding additive or an additive mixture.

Advantageously, at least one of the additive containers may have a central delivery opening cylinder with a discharge opening.

Advantageously, a plurality of additive containers may be stacked on top of one another so that their discharge opening cylinders are arranged coaxially and axially behind one another with respect to an imaginary axis. A bottom of one of the additive containers can thus form a lid of the subsequent additive container.

The connection components for connecting the additive containers may advantageously be located on the radially outer peripheral side of the additive container.

The discharge openings, in particular the discharge opening cylinders can be arranged instead of coaxially eccentric with respect to the imaginary axis. The positions of the discharge openings within the additive container stack may also vary, in particular alternate.

Advantageously, at least two additive chambers can be arranged in at least one of the additive containers. In this way, several additive chambers can be arranged to save space. In a separate mechanical connection between the additive chambers of the at least one additive container can be dispensed with. The additive chambers may advantageously each have their own dispensing opening.

Advantageously, the at least one additive container can have at least one partition wall with which at least two additive chambers can be separated from one another.

The additive chambers may be arranged like a honeycomb. In this way, a multiplicity of identical or different additive chambers can be arranged in an additive container. As an alternative to the honeycomb structure, the additive chambers may also be realized differently, in particular as preferably coaxial annular spaces.

At least one additive container may advantageously be sealed outside the at least one dispensing opening. For this purpose, advantageously O-rings can be used.

Advantageously, at least one of the discharge openings and / or at least one of the additive chambers and / or at least one of the additive containers may be arranged in a spatially lower region of the liquid system, optionally of the filter. In this way, due to gravity falling down liquid can come into contact with the discharge openings.

Advantageously, the additive dispensing device may be provided for treating engine oil of an internal combustion engine of a motor vehicle. However, the invention is not limited to internal combustion engines of motor vehicles. Rather, it can also be used outside the automotive industry, especially in industrial engines. It can also be used outside of internal combustion engines, especially in motor vehicles. The additive dispensing device may also be suitable for other types of fluid systems, in particular filters, for the treatment of other types of fluids, in particular oils, preferably gear oil or hydraulic oil, fuel, water or urea water solution.

Advantageously, the additive dispensing device can be used in a fluid circuit, in particular a motor oil circuit of an internal combustion engine. In this way, by means of the additives, the liquid can be conditioned in the liquid circuit. Thus, the properties of the liquid over the service life of the fluid system can be kept as constant as possible. Additives can be arranged in the additive chambers, which can have their effect at different operating times or mileages of the liquid circuit, in particular the liquid.

During manufacture or restoration of the additive dispenser, the additive compartments may be filled with the appropriate additives become. Subsequently, the discharge openings can be closed with the corresponding closure elements. The pre-assembled, ready-to-use additive dispenser may be disposed in the fluid system. The additives are only released when the corresponding closure elements have been at least partially removed by the liquid to be treated.

In the additive chambers, individual additives or mixtures of additives can be arranged.

Additives are known to be active ingredients which are added to improve certain properties of the liquid to be treated. The active substances can change the physical properties and / or the chemical properties. They can also cause a surface change of the friction partners, in particular when added to lubricants.

The at least one additive that may be disposed in the at least one additive chamber may be liquid or solid. Advantageously, the at least one additive can be degraded during use, in particular chemically. With the at least one additive, the properties of the liquid can be obtained over the operating period and / or the properties can be changed, in particular for the corresponding intended use, improved.

So-called friction modifiers or TBN boosters can be added to engine oil as an additive. Friction modifiers can reduce friction losses on moving engine parts and thus reduce fuel consumption. TBN boosters can react with acids which can be formed during combustion in an internal combustion engine and can be consumed in the process. With TBN boosters, oil acidification can be slowed down. It is also possible to use other additives, in particular with antioxidants.

Advantageously, a first additive chamber may contain a friction modifier. A second additive chamber may contain a TBN booster.

In an advantageous embodiment, at least one of the closure elements can be removed, in particular dissolved or melted, depending on the physical and / or chemical state of the liquid to be treated. The state of the liquid to be treated can be defined by its physical and / or chemical properties, in particular degree of contamination of particles and / or water, pH, temperature and / or flowability and / or the like. Accordingly, the closure elements may have different or the same release behavior and / or melting behavior.

Advantageously, the resolution of the closure elements can be dependent on the aging of the liquid, in particular liquid in a liquid circuit. Depending on its properties, the liquid to be treated can dissolve the at least one closure element and allow the addition of the corresponding additive or an additive mixture. Thus, the liquid can be better conditioned specifically as needed. Thus, certain properties of the liquid can be changed, in particular improved, by adding the corresponding additive. In a liquid circulation, certain properties of the liquid can also be obtained.

For different properties / states of the liquid to be treated, advantageously different, in each case special, additives can be provided. In this way, a more accurate, needs-based dosage can be done. An addition of an additive, which is not absolutely necessary for the conditioning of the liquid, since in particular an influence on certain properties of the liquid is not required, can thus be avoided.

In a further advantageous embodiment, at least two of the discharge openings can be arranged in a fluid-like manner, viewed serially from the liquid guide area. The discharge openings can be released one behind the other. It can be realized in this way a cascade-like arrangement of the additive chambers. Advantageously, the additive chambers may be realized in an additive container stack.

Advantageously, a first dispensing opening may form a fluid connection of the liquid guiding area to a second dispensing opening. The second dispensing opening may in this way be fluidly separated from the liquid guiding area until a first closing element closing the first dispensing opening is at least partially removed, in particular dissolved or melted. The liquid can only then come into contact with the corresponding second closure element. With the release of the first discharge opening, the additive can also be supplied from the corresponding first additive chamber to the liquid.

Advantageously, the additive chambers can be arranged one behind the other in such a way that the respectively following discharge opening is connected to the preceding discharge opening directly or indirectly, in particular by means of the first additive chamber. Advantageously, the additive chambers may be arranged in a stack, in particular in an additive container stack.

Advantageously, the closure element of the subsequent additive chamber can be configured and / or arranged such that it comes into contact with the liquid at the same time as the additive of the preceding additive chamber. In this way, at the same time the additive of the preceding additive chamber can be metered and the closure element of the subsequent additive chamber at least partially removed, in particular dissolved or melted.

In a further advantageous embodiment, at least two of the discharge openings can be arranged in parallel fluid-technically viewed from the liquid guide area. In this way, the closure elements of the respective discharge openings can simultaneously come into fluid contact with the liquid to be treated and be at least partially removed, in particular dissolved or melted. The closure elements may be the same or different. With the same closure elements, the delivery openings can be released simultaneously. In the case of different closure elements, the dispensing openings can be released under different conditions, in particular different contact durations of the closure elements with the liquid to be treated and / or properties of the liquid. The duration of the respective dissolution process can be influenced, in particular predetermined, by a thickness of the closure elements and / or physical and / or chemical properties of the materials used for the closure elements.

Advantageously, a plurality of additive chambers may be arranged in an additive container. On one side of the additive container, the additive chambers may be open, so that corresponding discharge openings can be formed there. This side of the additive container may be in fluid communication with the liquid guide portion. In this way, the closure elements of all the discharge openings can be in contact with the liquid to be treated at the same time and can thus at least partially be removed at the same time, in particular dissolved or melted. The duration of the dissolution process of the closure elements can be different or the same.

In a further advantageous embodiment, at least two of the additive chambers may be the same. In this way, the additive dispenser can be used more flexibly, in particular modular. The corresponding additives can be added under the same conditions and / or in equal amounts to the liquid to be treated. Advantageously, the same or different additive / additive mixtures can be arranged in the at least two additive chambers.

In a further advantageous embodiment, at least two of the additive chambers may be different in shape and / or size. In this way, in particular, different amounts of, in particular, different additives can be provided. Incidentally, so the additive chambers can be arranged space-saving.

In a further advantageous embodiment, the additive dispensing device can be arranged in or on the liquid system at least partially exchangeable. In this way, the additive dispenser can be at least partially replaced. Thus, the additive dispenser can be replaced in particular when at least one of the additives is used up. Advantageously, at least one of the additive chambers, in particular at least one of the additive containers, can be exchangeable. Advantageously, a plurality of additive chambers, in particular additive containers, can be exchanged as a kit.

At least the part of the additive dispensing device can be exchanged in particular specifiable maintenance intervals. Advantageously, at least one of the additive chambers can be refilled with additives as needed. Thus, the additive dispenser can be at least partially reused.

The additive dispenser can be advantageously at least partially replaced with a similar additive dispenser of a different type. This may be particularly advantageous if the fluid system is to be operated under different conditions and / or with another fluid. In this case, other additives and / or a different type and / or amount of addition of the additives may be required.

Alternatively, the at least one additive chamber can also be filled without having to remove it from the fluid system. In this way, the fluid system, in particular the additive dispensing device, be designed simpler.

In a further advantageous embodiment, the liquid system may comprise at least one filter element for cleaning the liquid to be treated and at least one discharge opening may be in contact with the liquid guide region on the clean fluid side or the raw fluid side of the filter element. In this way, the Additive dispensing device to be realized in combination with the at least one filter element. Thus, the liquid can be both cleaned and treated with at least one additive / treated.

Advantageously, at least one discharge opening on the raw fluid side of the at least one filter element can be in contact with the liquid guide area. In this way, the corresponding additive can be added before the liquid reaches the filter element. Thus, the at least one added additive can have a positive effect in particular on properties and / or function, in particular service life, of the filter element. In particular, by-products from the fuel combustion can be bound, decomposed and / or neutralized with the at least one additive so that the filter material is less chemically contaminated by the liquid.

Additionally or alternatively, at least one discharge opening on the clean fluid side of the at least one filter element may be in contact with the liquid guide area. In this way, at least one additive can be metered in after the liquid to be treated has passed through the at least one filter element. Thus it can be avoided that the additive in the filter element filtered out again and / or affect the filter element in its function, in particular damage, can be.

Advantageously, the at least one filter element may be a hollow filter element. The hollow filter element may have a filter bellows which at least partially surrounds an element interior. The liquid can flow through the filter element from the inside to the outside or from the outside to the inside. The filter bellows may have a folded or unfolded filter medium.

Advantageously, at least one part of the additive dispensing device, in particular at least one additive chamber, in particular at least one additive container, and / or at least one dispensing opening, can be arranged to save space in the element interior, in particular in a central tube or support tube.

Alternatively or additionally, at least one part of the additive dispensing device, in particular at least one additive chamber, in particular at least one additive container, and / or at least one dispensing opening, may be arranged outside the hollow filter element.

Advantageously, the hollow filter element may be a so-called round filter element, oval round filter element, conical round filter element or conical-oval round filter element. The hollow filter element may also have a different, in particular angular cross-section.

At least one additive container with at least one additive chamber can advantageously have a cross section which corresponds to the cross section of the hollow filter element. Advantageously, the at least one additive container may be approximately cylindrical. The at least one additive container can be arranged axially in front of or behind the hollow filter element with respect to an element axis.

In the case of a round filter element or an oval, conical or conical-oval round filter element, the at least one additive container can be arranged in a space-saving manner on one of the end faces of the filter element. Several additive containers may be arranged on the same or on different end faces of the filter element.

Furthermore, the object is achieved by the filter according to the invention in that at least two of the discharge openings and / or their closure elements are configured differently and / or arranged so that the corresponding discharge openings can be released simultaneously or offset in time.

The advantages and features disclosed above in connection with the additive dispensing device according to the invention and its advantageous embodiments apply correspondingly and vice versa for the filter according to the invention and its advantageous embodiments.

In addition, according to the invention, the invention is achieved by the filter element / additive-dispensing module in that at least two of the dispensing openings and / or their closure elements are configured and / or arranged differently so that the corresponding dispensing openings can be released simultaneously or at different times.

The advantages and features presented above in connection with the additive dispensing device according to the invention and the filter according to the invention and their advantageous embodiments apply correspondingly and vice versa for the filter element / additive dispensing module according to the invention and its advantageous embodiments.

Brief description of the drawings

Further advantages, features and details of the invention will become apparent from the following description, are explained in more detail in the embodiments of the invention with reference to the drawing. The person skilled in the art will use the drawings in the drawing Described description and the claims in combination expediently individually and summarize meaningful further combinations. It show schematically

1 a longitudinal section of an oil filter for engine oil of an internal combustion engine with a round filter element and an additive dispensing device according to a first embodiment;

2 an isometric view of an additive container stack of the additive dispenser of the 1 ;

3 a longitudinal section of an oil filter for engine oil of an internal combustion engine with a round filter element and an additive dispensing device according to a second embodiment;

4 an isometric view of an additive container of the additive dispenser of the 3 ;

5 an isometric view of an additive container of an additive dispensing device according to a third embodiment;

6 an isometric view of an additive container of an additive dispenser according to a fourth embodiment.

In the figures, the same components are provided with the same reference numerals.

Embodiments) of the invention

In the 1 is an oil filter 10 for engine oil shown in a longitudinal section. The oil filter 10 is interchangeably arranged in an engine oil circuit of an internal combustion engine of a motor vehicle. At the oil filter 10 it is a so-called replaceable filter. A filter housing 14 of the oil filter 10 Can be complete with a filter element 12 be replaced.

The filter housing 14 has a filter pot 16 with an installation opening for the filter element 12 on which with a filter cover 18 is closed. The filter cover 18 has one to a filter axis 20 coaxial oil outlet 22 and a plurality of with respect to the filter axis 20 eccentrically arranged oil inlets 24 on.

Whenever "radial", "axial", "coaxial", "circumferential" or the like is mentioned below, this refers to the filter axis, unless otherwise stated 20 ,

The oil filter 10 can by means of a screw to a in the 1 not shown filter head of the internal combustion engine are screwed. The oil outlet 22 stands with screwed oil filter 10 Fluidtechnisch in conjunction with a corresponding oil drain channel of the filter head. The oil inlets 24 are then connected to a corresponding oil inlet channel of the filter head.

The filter cover 18 is fixed with the filter pot 16 connected. In the filter pot 16 is the filter element 12 arranged so that there is the oil outlet 22 from the oil inlets 24 separates.

The filter element 12 is a so-called round filter element. It includes a filter bellows 26 from a zigzag-folded, moderately closed filter medium. At his the filter cover 18 facing side is the filter bellows 26 with a connecting end disk 28 tightly connected. The connecting end disk 28 has a coaxial passage opening 30 on, which by means of a corresponding connection cylinder an element interior 32 with the oil outlet 22 combines. A bottom end disk 34 is located on the opposite end of the filter bellows 26 and is tightly connected to it. The bottom end disk 34 is closed throughout.

In the element interior 32 is a support tube 36 arranged coaxially, which is located between the Anschlußendscheibe 28 and the bottom end disk 34 extends. The support tube 36 is open at both ends. Its peripheral wall points in the 1 Not shown passage openings for engine oil. A radially inner circumferential side of the filter bellows 26 may be on the radially outer peripheral side of the support tube 36 support.

On the filter bellows 26 axially opposite side of the bottom end disk 34 is in a caseback 38 of the filter housing 14 an additive dispenser 40 arranged.

The additive dispenser 40 includes an additive container stack 41 with a total of three additive containers 42 , The additive container stack 41 is in the 2 shown in detail. The additive container stack 41 is a total coaxial with the filter axis 20 , The additive container 42 are plugged together by means of locking connections in the axial direction. The additive container 42 are identical in terms of material, shape and size.

The following is one of the additive containers 42 exemplified in more detail. The additive container 42 is made of polyamide. The additive container 42 is a total of approximately cup-shaped. Its opening is on the filter element 12 facing end side of the additive container 42 , Its peripheral wall is stepped. The inner diameter of the additive container 42 is greater on its side facing the opening than on its side facing the floor.

The peripheral wall of the additive container 42 has on its bottom side a plug-in section 44 on. On the opening side, the peripheral wall has a receiving portion 46 on. The inner diameter of the receiving portion 46 corresponds to an outer diameter of the insertion portion 44 , An outer diameter of the receiving portion 46 is similar to an outer diameter of the bottom end disk 34 of the filter element 12 ,

The recording section 46 has circumferentially distributed over a total of four detent openings 48 , The detent openings 48 each have approximately a rectangular cross-section. They extend approximately circumferentially with their long sides. The detent openings 48 are located near the free edge of the peripheral wall of the additive container 42 , The detent openings 48 are open in the radial direction.

At the radially outer peripheral side of the insertion portion 44 are four locking bars 50 according to the detent openings 48 arranged distributed circumferentially. The locking bars 50 can when inserting the plug-in section 44 of the additive container described by way of example 42 in the recording section 46 of the adjacent additive container 42 in its detent openings 48 engage. In this way, a latching connection between the additive containers 42 will be realized.

Furthermore, the additive container 42 a coaxial discharge port cylinder 52 on. The discharge port cylinder 52 is integral with the bottom of the additive container 42 connected. It is open at both ends and pierces the bottom of the additive container 42 , The discharge port cylinder 52 extends in the interior of the additive container 42 about half the axial height of the additive container 42 ,

Between the discharge opening cylinder 52 and the peripheral wall of the additive container 42 is an additive chamber 53 realized for an additive.

The discharge port cylinder 52 surrounds a discharge opening 54 for the additive. A the bottom of the additive container 42 axially facing edge of the discharge opening cylinder 52 has at its front side a plurality of passage columns 56 in the form of depressions. The passage column 56 are distributed circumferentially. Through the passage column 56 may engine oil from the delivery port 54 in the additive chamber 53 and additive-treated / treated engine oil back into the delivery port 54 reach.

In the original state, for example in the delivery state of the additive dispensing device 40 , is the delivery opening 54 with one in the 1 shown closure element 58 locked. The closure element 58 is made of wax or other material which is slowly dissolvable by engine oil at operating temperature.

The three additive containers 42 are stacked coaxially. In each case the bottom of the filter element 12 facing additive container 42 closes the opening of the corresponding remote additive container 42 , The discharge port cylinder 52 of the remote additive container 42 extends almost to the bottom of the bottom of the facing additive container 42 So, up to its discharge opening 54 ,

The filter element 12 facing element-side additive container 42 , in the 1 above, further comprises a container lid 60 on. The container lid 60 has corresponding, in the 1 not shown, locking webs, which in the detent openings 48 of the element-side additive container 42 can engage.

Furthermore, the container lid 60 corresponding, in the 1 Not shown connecting elements, with which the additive container stack 41 with the bottom end disk 34 of the filter element 12 connected is.

For the production of the additive dispenser 40 become the additive containers 42 each filled with the appropriate additive. Subsequently, the additive container 42 plugged together. So the later the filter element 12 remote additive container 42 locked. The element-side additive container 42 comes with the container lid 60 locked.

The additive dispenser 40 comes with the prefabricated filter element 12 to a filter element / additive delivery module 62 connected.

The filter element / additive dispensing module 62 gets into the filter pot 16 used. The filter pot 16 then with the filter cover 18 locked.

In the additive containers 42 Different additives are included. In the lower additive container 42 , on the filter element 12 On the opposite side, an example of a friction modifier for reducing fuel consumption is included. The Friction Modifier reduces friction losses on moving engine parts. The middle additive container 42 contains by way of example a TBN booster that reacts with acids that are formed during combustion. The TBN booster can slow down oil acidification of the engine oil. Of the additive tank 42 on the filter element 12 facing side contains another, not of interest here additive.

During operation of the internal combustion engine, engine oil flows through the oil inlet channel of the filter head into the oil inlets 24 of the oil filter 10 , From there, the engine oil gets into an annulus 64 that the filter bellows 26 on the crude oil side surrounding radially outside. The engine oil flows through the filter bellows 26 from radially outward to radially inward and passes through the peripheral wall of the support tube 36 in the element interior 32 , The filtered engine oil leaves the oil filter 10 through the oil outlet 22 and enters the oil drain channel of the filter head.

The annulus 64 is at the height of the bottom end disk 34 circumferentially contiguous with an oil guide area 66 at the bottom of the filter head 16 connected. The oil guide area 66 surrounds the additive container stack 41 radially outward and extends along the outside of the bottom of the filter element 12 turned away, in the 1 lower, additive container 42 ,

The engine oil, which comes from the annulus 64 in the oil handling area 66 passes, is continuously replaced due to the flow. The engine oil initially comes into contact with the closure element 58 of the lower additive container 42 , With the service life of the oil filter 10 The warm engine oil dissolves the closure element 58 gradually on, so the discharge opening 54 of the lower additive container 42 finally released. The engine oil passes through the passage gaps 56 the discharge port cylinder 52 in the additive chamber 53 to the corresponding additive. The additive gets into the engine oil and is consumed. The additive applied engine oil is through the passage column 56 continuously exchanged.

In addition, engine oil enters with the closure element 58 of the middle additive container 42 in contact and solves this with the service life of the oil filter 10 on. In this way is offset in time to the first discharge opening 54 also the discharge opening 54 of the middle additive container 42 Approved. Analogous to the lower additive container 42 becomes the additive of the middle additive container 42 supplied to the engine oil circuit.

Finally, in an analogous manner, the closure element 58 of the element-side additive container 42 dissolved and the additive contained in this supplied to the engine oil.

Overall, the additive container 42 arranged in cascade. During the operation of the internal combustion engine, the additives are supplied in a time-shifted manner to the engine oil of the engine oil circuit.

In the 3 and 4 is an oil filter 10 with an additive dispenser 140 shown according to a second embodiment. Unlike the first embodiment, the additive dispenser 140 only a single additive container 142 on which in the 4 shown in detail. The additive container 142 includes a plurality of honeycomb arranged additive chambers 153 which contain different additives. The additive chambers 153 are defined by a plurality of circumferential coaxial partitions 168 and radially extending partitions 170 limited.

On the filter element 12 facing end face have the additive chambers 153 each a discharge opening 54 for the corresponding additive. The discharge openings 54 are each with a closure element 58 in the 3 are shown, closed. The closure elements 58 have different axial dimensions.

On the filter element 12 facing end face, the additive container 142 distributes a plurality of spacer pins 172 on. The spacer pins 172 form stops to a passage gap 174 between the additive container 142 and the bottom end disk 34 of the filter element 12 to realize. The passage gap 174 is part of the oil handling area 66 ,

In contrast to the first embodiment, in the second embodiment, the engine oil flows out of the annulus 64 in the passage gap 174 of the oil-carrying area 66 , The engine oil reaches the closure elements 58 in the delivery openings 54 , The engine oil releases the closure element 58 with the service life of the oil filter 10 on. Due to the different axial thicknesses give the closure elements 58 the corresponding discharge openings 54 free in time. The in the additive chambers 53 contained additives are supplied to the motor oil circuit correspondingly offset in time.

Otherwise corresponds to the operation of the oil filter 10 according to the second embodiment, the oil filter 10 according to the first embodiment of the 1 ,

In the 5 is an additive container 242 shown according to a third embodiment. Unlike the additive container 142 according to the second embodiment, the additive container 242 a total of five additive chambers 253 on, which are arranged distributed circumferentially in corresponding circular cylindrical sectors. The additive chambers 253 are separated by a total of five circumferentially evenly distributed radial partitions.

In the 6 is an additive container 342 shown according to a fourth embodiment. In contrast to the second embodiment of the 4 and the third embodiment of the 5 are the additive chambers 353 in the fourth embodiment of the 6 designed as coaxial annular spaces. The additive chambers 353 are separated by coaxial circumferential partitions.

QUOTES INCLUDE IN THE DESCRIPTION

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Cited patent literature

• DE 11200700257 T5 [0004]

Claims (10)

Additive dispenser ( 40 ; 140 ) of a fluid system, in particular a filter ( 10 ), for the treatment of liquid, in particular oil, preferably engine oil, gear oil or hydraulic oil, fuel, water or urea water solution, in particular an internal combustion engine, in particular a motor vehicle, with at least two additive chambers ( 53 ; 153 ; 253 ; 353 ) for at least one additive, each having at least one discharge opening ( 54 ) provided with a liquid guide region ( 66 ) for the liquid to be treated of the fluid system ( 10 ) are fluidically connectable and in the original state of the additive dispensing device ( 40 ; 140 ) each with at least one closure element ( 58 ) are closed, which to release the corresponding dispensing opening ( 54 ) during operation of the additive dispensing device ( 40 ; 140 ) by the liquid to be treated at least partially from the corresponding discharge opening ( 54 ), characterized in that at least two of the discharge openings ( 54 ) and / or their closure elements ( 58 ) are configured and / or arranged differently such that the corresponding discharge openings ( 54 ) can be released simultaneously or at different times. An additive dispenser according to claim 1, characterized in that at least one of the closure elements ( 58 ) depending on the physical and / or chemical state of the liquid to be treated, in particular dissolved or melted can be. An additive dispenser according to claim 1 or 2, characterized in that at least two of the dispensing openings ( 54 ) fluidly from the liquid guide area ( 66 ) are considered serially arranged. An additive dispenser according to one of the preceding claims, characterized in that at least two of the dispensing openings ( 54 ) fluidly from the liquid guide area ( 66 ) are arranged in parallel view. Additive dispensing device according to one of the preceding claims, characterized in that at least two of the additive chambers ( 53 ; 253 ) are the same. Additive dispensing device according to one of the preceding claims, characterized in that at least two of the additive chambers ( 153 ; 353 ) are different in shape and / or size. Additive dispensing device according to one of the preceding claims, characterized in that the additive dispensing device ( 40 ; 140 ) in or on the fluid system ( 10 ) is arranged at least partially interchangeable. Additive dispensing device according to one of the preceding claims, characterized in that the liquid system ( 10 ) at least one filter element ( 12 ) for cleaning the liquid to be treated and at least one discharge opening ( 54 ) with the liquid guide region ( 66 ) on the clean fluid side or the raw fluid side of the filter element ( 12 ) is in contact. Filter ( 10 ) for liquid, in particular oil, preferably engine oil, gear oil or hydraulic oil, fuel, water or urea water solution, in particular an internal combustion engine, in particular of a motor vehicle, with a filter housing ( 14 ), which has at least one inlet ( 24 ) and at least one outlet ( 22 ) for the liquid to be treated and in which at least one filter element ( 12 ) is arranged so that it has the at least one inlet ( 24 ) of the at least one outlet ( 22 ), and in which at least one additive Dispensing device ( 40 ; 140 ), in particular according to one of the preceding claims, which has at least two additive chambers ( 53 ; 153 ; 253 ; 353 ) for at least one additive, each having at least one discharge opening ( 54 ) provided with a liquid guide region ( 66 ) for the liquid to be treated of the filter ( 10 ) are fluidically connectable and in the original state of the additive dispensing device ( 40 ; 140 ) each with at least one closure element ( 58 ) are closed, which to release the corresponding dispensing opening ( 54 ) during operation of the filter ( 10 ) by the liquid to be treated at least partially from the corresponding discharge opening ( 54 ), characterized in that at least two of the discharge openings ( 54 ) and / or their closure elements ( 58 ) are configured and / or arranged differently such that the corresponding discharge openings ( 54 ) can be released simultaneously or at different times. Filter element / additive delivery module ( 62 ) of a filter ( 10 for the treatment of liquid, in particular oil, preferably engine oil, gear oil or hydraulic oil, fuel, water or urea water solution, in particular an internal combustion engine, in particular a motor vehicle, with a filter element for the liquid to be treated and an additive dispenser ( 40 ; 140 ), in particular according to one of claims 1 to 8, with at least two additive chambers ( 53 ; 153 ; 253 ; 353 ) for at least one additive, each having at least one discharge opening ( 54 ) provided with a liquid guide region ( 66 ) for the liquid to be treated of the filter ( 10 ) are fluidically connectable and in the original state of the additive dispensing device ( 40 ; 140 ) each with at least one closure element ( 58 ) are closed, which to release the corresponding dispensing opening ( 54 ) during operation of the additive dispensing device ( 40 ; 140 ) by the liquid to be treated at least partially from the corresponding discharge opening ( 54 ), characterized in that at least two of the discharge openings ( 54 ) and / or their closure elements ( 58 ) are configured and / or arranged differently such that the corresponding discharge openings ( 54 ) can be released simultaneously or at different times.

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