DE102008057521A1 - Tank container for motor vehicle, has auxiliary chamber which is divided by partition wall into two partial chambers, where former partial chamber is connected with connection openings of auxiliary chamber - Google Patents

Abstract

The tank container (10) has an auxiliary chamber (16) which is divided by a partition wall into two partial chambers. The former partial chamber is connected with the connection openings of the auxiliary chamber. An intermediate wall between the fuel chamber (12) and the auxiliary chamber has an aperture in the area of the latter partial chamber of the auxiliary chamber. The fuel chamber and the latter partial chamber of the auxiliary chamber are fluidically connected and both are served to receive fuel for an internal combustion engine.

Description

The The invention relates to a tank container for a Motor vehicle with an internal combustion engine and an exhaust aftertreatment device.

at Internal combustion engines exist ever stricter limits for the exhaust gases, which is why the internal combustion engines usually coupled with increasingly effective exhaust aftertreatment devices become. These exhaust aftertreatment devices need in general aids for various chemical reactions with the exhaust gases of the internal combustion engine. For example, diesel-powered Internal combustion engines for reducing the nitrogen oxide content in the exhaust gas stream a selective catalytic reduction (SCR) performed, in which the nitrogen oxides with the aid of reducing agents such as a urea-water solution (HWL) to nitrogen and water be reduced.

such Aids are usually stored in a tank and conveyed via a line to a dosing module, with the aid at a suitable location in the exhaust aftertreatment device or an exhaust pipe are injected.

in principle is the storage of the aids in a separate auxiliary tank possible, which is attached to the vehicle with separate holders becomes. Due to the generally very limited in motor vehicles Space is the aid tank increasingly with the Fuel tank combined to form a unit. This has the Another advantage that the aid in the auxiliary tank because of spatial proximity to the fuel from that in operation or warmer fuel tank already during the startup process Heat can absorb and thus even at low outside temperatures is prevented from freezing.

Such tank container units in which a fuel space and a reducing agent space are arranged side by side in a common tank container, are for example in the publications DE 10 2004 051 746 A1 . DE 10 2005 029 415 A1 and DE 197 29 003 C3 , In the case of EP 1 503 055 A1 In addition to the fuel space and the reducing agent space, the tank container unit also includes a pre-silencer.

Further, the documents disclose DE 197 29 003 C3 . EP 1 388 648 A1 and EP 1 645 452 A1 Tank container units in which a reducing agent tank is received in a fuel chamber.

The DE 10 2006 050 808 A1 shows a reducing agent tank containing an elastic tank shell, the receiving volume of which can adapt to the changes in volume caused by changes in temperature of the reducing agent (eg, freezing a urea-water solution).

at the tank container units, where the fuel chamber and the reducing agent space next to each other in a common Tank containers are arranged, the size is of the available for the reducing agent Recording volume depending on the size the directly adjacent fuel tank or its Exterior walls as well as of the size the one needed for the aid container Connecting piece and an optionally used heating device. This results in this type of combination unnecessary large volumes of aid that are not in the operation of the motor vehicle needed, d. H. for most applications are rather too large, and on the other hand the for Restrict the fuel space available to the fuel.

It is therefore the object of the present invention, a tank container for a motor vehicle with an internal combustion engine and an exhaust aftertreatment device to provide, in which a fuel space and a resource room next to each other in a common tank arranged and separated by an intermediate wall, being the one for the fuel and the aid available standing volumes are better adapted to the needs.

These Task is by a tank container for a Motor vehicle solved with the features of claim 1. Advantageous embodiments and further developments of the invention are specified in the dependent claims.

The tank container for a motor vehicle with an internal combustion engine and an exhaust aftertreatment device comprises a fuel chamber for receiving a fuel for the internal combustion engine and a tool room for receiving an aid for the exhaust aftertreatment device, wherein the fuel chamber and the auxiliary space arranged side by side in the common tank container and separated by an intermediate wall are. According to the invention, the auxiliary space is divided by a partition wall into a first partial space and a second partial space, the first partial space of the auxiliary space being in communication with the connection openings of the auxiliary space and serving to receive an auxiliary agent for the exhaust gas aftertreatment device. In addition, the intermediate wall between the fuel space and the auxiliary space in the region of the second subspace of the aid space at least one opening, so that the fuel space and the second subspace of the aid space are in fluid communication with each other and both of the up take a fuel for the internal combustion engine.

By the integration of fuel room and resource room into one common tank container becomes a compact unit created. Due to the immediate adjacency of the aid room to the fuel chamber this is basically too large, d. H. his aid volume exceeds the actual Need for the operation of the internal combustion engine or their Exhaust treatment device. According to the invention However, the aid room is by a partition in a first and subdivided a second subspace, with only the first subspace is used for receiving an aid. This way you can the provided for receiving an aid Volume can be reduced to the respective need and thus saved Space can because of the corresponding openings in the partition between fuel space and auxiliary space in the form of the second Subspace used to stock a fuel. With In other words, stands for the storage of the fuel at the same size of the common tank a fuel room with a larger volume ready.

Of the The term "aid" generally refers to means those for a chemical and / or physical process used in the exhaust aftertreatment device of the internal combustion engine become. These include in particular reducing agents such as a urea-water solution (HWL) for reducing nitrogen oxides in the exhaust gas stream to nitrogen and water.

In a preferred embodiment of the invention, the installation position the partition be variable, so the size the first subspace of the aid room for the recording an aid for the exhaust aftertreatment device is variably adjustable.

By This measure can be a uniform tank container with a size for different types of motor vehicles or different types and designs of internal combustion engines and their exhaust aftertreatment devices by the partition is installed at a suitable position, to provide a desired volume of the tool room.

In a further embodiment of the invention, the interior of the first subspace of the aid room for the recording an aid for the exhaust aftertreatment device be sealed fluid-tight. This fluid-tight encapsulation of the first Teilraums is for example in the form of a plastic skin or sheath formed, for example, by an inner coating or an Ausrotierungsvorgang the first subspace can be produced.

Above as well as other features, advantages and applications The invention will become apparent from the following description of a preferred Embodiment in conjunction with the accompanying Drawings easier to understand.

there demonstrate:

1 a perspective view of a tank container for a motor vehicle according to an embodiment of the present invention;

2 a partial perspective view of the auxiliary space of the tank of 1 according to an embodiment of the invention; and

3 a partial perspective view of the auxiliary space of the tank of 1 with intermediate wall according to an embodiment of the invention.

Referring to 1 to 3 Now, an exemplary embodiment of a tank container 10 for a motor vehicle described in detail. However, the shape and size of the tank are not limited to the embodiments shown.

The tank container 10 includes a fuel compartment 12 that with a filler neck 14 and a removal opening 13 is provided for receiving a fuel (eg.

Diesel, gasoline) for an internal combustion engine of the motor vehicle and a tool room 16 that with a filler neck 20 and a removal opening 18 is provided for receiving an auxiliary means (eg, reducing agent such as HWL) for an exhaust aftertreatment device of the internal combustion engine. The fuel room 12 and the resource room 16 are directly next to each other in the tank container 10 arranged and through a partition wall 22 separated from each other.

As the aid room 16 to the fuel room 12 adjacent, heated during operation or already during the starting process of the motor vehicle fuel heat to the aid in the aid room 16 transfer. In this way, it can be prevented, for example, that a liquid aid freezes at low outside temperatures. On the other hand, determine the dimensions of the fuel chamber 12 automatically the dimensions of the aid room 16 because of the tank container 10 has the common outer walls.

As in 2 is therefore the resource room 16 through a partition 24 in a first subspace 26 and a second subspace 28 U.N tert rushes. The interior of the first subspace 26 (above in 2 ) stands with the filler neck 20 and the removal opening 18 for the aid in fluid communication. In other words, this first subspace is used 26 the inclusion of an aid for the exhaust aftertreatment device of the internal combustion engine.

The partition 24 is preferably arranged substantially horizontally in the aid room, but can in principle also be employed at an angle. This partition 24 will be in the resource room 16 attached for example by stapling or welding. In this case, the partition 24 preferably in any height position in the aid room 16 to be ordered. In other words, the volume of the first subspace 26 for receiving an aid for the exhaust gas aftertreatment device variably adjustable. In particular, the volume of the first subspace 26 be reduced to the volume required in the respective application.

After inserting the partition 24 at the desired position in the aid room 16 becomes the first subspace 26 for auxiliaries of the exhaust aftertreatment device inside coated or spun out, ie encapsulated fluid-tight, to the fuel in the adjacent fuel space 12 and second subspace 28 to be sealed. This coating for forming a plastic skin or sheath finds, for example, through the removal opening (also referred to as the donor opening) 18 instead of.

In the through the partition 24 formed second subspace 28 (below in 2 ) of the resource room 16 becomes like in the fuel room 12 stores a fuel for the internal combustion engine. For this purpose, the intermediate wall 22 between the fuel chamber 12 and the resource room 16 with at least one opening 30 provided so that the second subspace 28 with the fuel room 12 is in fluid communication. In this way, the fuel in the fuel compartment 12 also on the second subspace 28 of the resource room 16 expand, so that a total of a larger volume for reserving the fuel for the internal combustion engine can be provided.

The tank container according to the invention 10 with integrated fuel chamber 12 and resource room 16 is characterized in particular by an individually adjustable volume for storing the aid and thus optimizing the volumes made available for the fuel and the aid with the same total space requirement.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• DE 102004051746 A1 [0005]
• - DE 102005029415 A1 [0005]
• - DE 19729003 C3 [0005, 0006]
• EP 1503055 A1 [0005]
• EP 1388648 A1 [0006]
• - EP 1645452 A1 [0006]
• - DE 102006050808 A1 [0007]

Claims (3)

Tank container ( 10 ) for a motor vehicle with an internal combustion engine and an exhaust aftertreatment device, with a fuel chamber ( 12 ) for receiving a fuel for the internal combustion engine and an auxiliary space ( 16 ) for receiving an aid for the exhaust aftertreatment device, wherein the fuel space ( 12 ) and the aid room ( 16 ) side by side in the common tank container ( 10 ) and by an intermediate wall ( 22 ) are separated from each other, characterized in that the aid space ( 16 ) by a partition wall ( 24 ) into a first subspace ( 26 ) and a second subspace ( 28 ), the first subspace ( 26 ) of the aid room ( 16 ) with the connection openings ( 18 . 20 ) of the aid room communicates and serves to receive an aid for the exhaust aftertreatment device; and that the partition ( 22 ) between the fuel chamber ( 12 ) and the aid room ( 16 ) in the region of the second subspace ( 28 ) of the aid room ( 16 ) at least one opening ( 30 ), so that the fuel space ( 12 ) and the second subspace ( 28 ) of the aid room ( 16 ) are in fluid communication with each other and both serve to receive a fuel for the internal combustion engine. Tank container according to claim 1, characterized in that the installation position of the partition ( 24 ) is variable, so that the size of the first subspace ( 26 ) of the aid room ( 16 ) is variably adjustable for receiving an aid for the exhaust gas aftertreatment device. Tank container according to claim 1 or 2, characterized in that the interior of the first subspace ( 26 ) of the aid room ( 16 ) is encapsulated fluid-tight for receiving an aid for the exhaust gas aftertreatment device.