DE102019000967A1 - Tank delivery module for a tank in a motor vehicle - Google Patents

Abstract

The invention relates to a tank delivery module (10) for a tank (50) of a motor vehicle (100). The tank delivery module (10) comprises a housing (20), a pump arranged in a housing interior of the housing (20) for delivering a fluid from the tank (50), and a connection device (30) which is fluidly connected to the pump. The fluid conveyed by the pump can be diverted from the tank (50) via the connection device (30) and directed towards a consumer. The connection device (30) has at least two connections (32, 42) via which respective fluid flows of the fluid can be supplied to the consumer.

Description

The invention relates to a tank delivery module for a tank of a motor vehicle, according to the preamble of patent claim 1.

Such tank delivery modules are often placed directly on or in a tank in order to remove fluid in the tank as required. Tank delivery modules can be used to transfer the fluid in the form of a liquid urea solution (also known as AdBlue), in the form of demineralized water (or similar types of water), in the form of cooling water, in particular water-antifreeze solution, ethanol or the like from an appropriate tank to promote. The fluid can be conveyed by means of the tank delivery module to different consumers, which can be designed, for example, as an exhaust line (into which fluid designed as a urea solution can be injected for nitrogen oxide reduction).

From the DE 10 2006 017 396 A1 a device for exhaust gas aftertreatment by means of the selective catalytic reduction of nitrogen oxides from the exhaust gas of an internal combustion engine by introducing a liquid reducing agent into the exhaust gas of the internal combustion engine is known. The device comprises a reducing agent container receiving the reducing agent, a reducing agent pump for delivering the reducing agent, a metering module for injecting the reducing agent into the exhaust gas flow upstream of the reduction catalyst and a heatable reducing agent line between the reducing agent container and the reducing agent pump and / or the reducing agent feed pump and the metering module and the metering valve . For each hose line carrying the reducing agent, a hose line carrying heating water is arranged in pairs in close proximity to give off heat.

The DE 10 2014 221 688 A1 describes a tank module for a tank with a tank volume for storing a fluid. The tank module comprises a fluid withdrawal nozzle which is designed to withdraw fluid through the fluid withdrawal nozzle from the tank volume and a control device which is designed to supply fluid into the tank volume, remove fluid from the tank volume and / or heat fluid control in the tank volume. The control device also includes an electrical or electronic component that emits heat during operation, which is arranged in such a way that fluid that is located in the fluid withdrawal nozzle is heated by the heat given off by the component.

The object of the present invention is to create a tank delivery module of the type mentioned at the outset which can be used particularly flexibly and for a low-cost supply of fluid.

This object is achieved by a tank delivery module with the features of claim 1. Advantageous developments of the invention are specified in the dependent claims.

The invention is based on a tank delivery module for a tank of a motor vehicle. The tank delivery module comprises a housing, at least one pump arranged in a housing interior of the housing for delivering a fluid from the tank, and a connection device which is connected to the pump in a fluid-conducting manner. The fluid conveyed by means of the pump can be diverted from the tank via the connection device and guided in the direction of at least one consumer. The fluid can be conveyed through the interior of the housing by means of the pump and fed to the connection device. The fluid can be fed to the at least one consumer or to several consumers via the connection device. The consumer can be designed, for example, as an exhaust line and the fluid, for example, as a urea solution to be introduced into the exhaust line for nitrogen oxide reduction, to name just one example.

In order to create a tank delivery module which can be used particularly flexibly, the invention provides that the connection device has at least two connections via which respective fluid flows of the fluid can be fed to the at least one consumer. This is advantageous because the two (or more) connections enable the fluid flows to be fed to several points of the at least one consumer or to several consumers, which enables flexible, needs-based supply to the respective points. A particular advantage is that the use of Y-pieces or T-pieces for dividing the fluid into the fluid flows can be dispensed with due to the at least two connections. Depending on the type of fluid and the use of the tank delivery module, the fluid inside the Y-pieces or T-pieces can freeze, especially at ambient temperatures below freezing point, which can lead to limitations in the supply of the consumer or even a failure in the supply of the consumer with the fluid can come.

With the possibility of dispensing with Y-pieces or T-pieces for dividing the fluid into the fluid flows, the present tank delivery module thus enables overall a simplified provision of the fluid (for example Adblue or water) for the consumer (s) at two or more points, on which, for example, metering valves can be arranged, by means of which the or the Consumer (s) can be supplied to the fluid flows by injection. It is sufficient to couple the respective, particularly simply designed, branch-free pressure lines on the one hand with the connections and on the other hand with the metering valves without having to split the pressure lines from the connections of the tank delivery module to two or more outlets using Y or T pieces . Accordingly, heaters for thawing or melting fluid frozen in such Y-pieces or T-pieces can be dispensed with.

Further advantages, features and details of the invention emerge from the following description of preferred exemplary embodiments and with reference to the drawing (s). The features and combinations of features mentioned above in the description as well as the features and combinations of features mentioned below in the description of the figures and / or shown alone in the figures can be used not only in the respectively specified combination, but also in other combinations or alone, without the scope of the Invention to leave.

• 1 eine schematische Perspektivansicht einer Anschlussvorrichtung für ein Tankfördermodul, welches dazu verwendet werden kann, ein Fluid aus einem Tank eines Kraftwagens zu fördern, wobei die Anschlussvorrichtung zwei Anschlüsse zur Koppelung jeweiliger Druckleitungen und deren Versorgung mit dem Fluid umfasst;
• 2 eine Variante der Anschlussvorrichtung mit zwei Anschlüssen, welche mittels einer Heizvorrichtung des Tankfördermoduls beheizbar sind;
• 3 eine weitere Variante der Anschlussvorrichtung mit zwei Anschlüssen, welche mittels einer Heizvorrichtung des Tankfördermoduls beheizbar sind;
• 4 eine schematische Perspektivansicht des Tankfördermoduls mit der Anschlussvorrichtung, welche zumindest bereichsweise in einen Gehäuseinnenraum eines Gehäuses des Tankfördermoduls eingeführt ist; und
• 5 eine weitere schematische Perspektivansicht des Tankfördermoduls, welches am Tank des Kraftwagens angeordnet ist, wobei jeweilige Druckleitungen an den jeweiligen Anschlüssen der Anschlussvorrichtung angeschlossen sind.

Show:

• 1 a schematic perspective view of a connection device for a tank delivery module which can be used to deliver a fluid from a tank of a motor vehicle, the connection device comprising two connections for coupling respective pressure lines and their supply with the fluid;
• 2 a variant of the connection device with two connections, which can be heated by means of a heating device of the tank delivery module;
• 3 a further variant of the connection device with two connections, which can be heated by means of a heating device of the tank delivery module;
• 4th a schematic perspective view of the tank delivery module with the connection device, which is at least partially inserted into a housing interior of a housing of the tank delivery module; and
• 5 a further schematic perspective view of the tank delivery module which is arranged on the tank of the motor vehicle, with respective pressure lines being connected to the respective connections of the connection device.

1 , 2 and 3 each show a variant of a connection device 30th for an in 4th Tank delivery module shown as a whole 10 . The connection device 30th includes two connections 32 , 42 which can be arranged parallel to each other, as in 1 and 2 is recognizable, or an angle, for example in the form of a right angle, can include one another, as in 3 is recognizable.

The tank delivery module 10 can be designed, for example, as an SCR tank delivery module (SCR = selective catalytic reduction) and at least partially in a tank 50 one in 5 strongly abstracted motor vehicle 100 introduced to a fluid from the tank 50 to promote. The fluid can, for example, be an aqueous urea solution, also known as Adblue. The Tank 50 can accordingly be designed as an SCR tank.

The tank delivery module 10 includes a housing 20th , with one, in a housing interior of the housing 20th arranged pump. The pump, not shown any further, serves to convey the fluid out of the tank 50 .

The connection device 30th can be directly connected to the pump in a fluid-conducting manner. The connection device 30th can preferably be introduced into the housing interior, at least in some areas, whereby a particularly space-saving arrangement of the connection device 30th given is. The two connections 32 , 42 can then move from the interior of the housing into the vicinity of the tank delivery module 10 protrude.

Via the connection device 30th can take the fluid conveyed by the pump out of the tank 50 diverted and in the direction of a consumer, also not shown, for example an exhaust pipe. In order to lead the fluid in the direction of the consumer, the connections 32 , 42 , which can generally be designed as connecting pieces, respective, separate and thus separate pressure lines 34 , 44 connected, as also in 5 is shown. Via the two connections 32 , 42 can then use the pressure lines to the consumer 34 , 44 respective fluid flows of the fluid are supplied with particularly high pressure.

In order to ensure a particularly high level of operational readiness even at low ambient temperatures, the tank delivery module 10 a heater for heating the fluid. The heating device, which is not shown further in the present case and which can comprise at least one heating wire, can preferably be inserted into the connection device 30th be integrated so that the heated fluid flows directly into the pressure lines 34 , 44 can be initiated and fed to the consumer. This allows even the pressure lines 34 , 44 heated if necessary and thus counteracted their freezing. It is conceivable, for example, that the Heating device at least partially within the connections 32 , 42 to be arranged so that a freezing of the connections 32 , 42 can be prevented even at low heating power of the heating device.

In order to be able to operate the heating device particularly as required, the tank delivery module 10 comprise a sensor, not shown further here, for detecting a fluid temperature of the fluid. In addition, the tank delivery module 10 comprise a control device, not shown further, which can be coupled to the sensor in a signal-conducting manner. The control device can control the heating device as a function of the fluid temperature, that is to say, for example, activate and deactivate it as required.

The tank delivery module 10 makes it possible - instead of using Y-pieces and / or T-pieces split lines - the pressure lines 34 , 44 to use, which are particularly robust against ice pressure and inexpensive to manufacture.

The tank delivery module 10 with the two separate connections 32 , 42 , which can also be referred to as outputs, enables, for example, a supply of two metering valves via the two separate pressure lines 34 , 44 or the supply of more than two, for example four metering valves, provided that split pressure lines are used and with the respective connections 32 , 42 be coupled.

List of reference symbols

10

Tank delivery module

20th

casing

30th

Connection device

32

connection

34

Pressure line

42

connection

44

Pressure line

50

tank

100

Motor vehicle

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 102006017396 A1 [0003]
• DE 102014221688 A1 [0004]

Claims (6)

Tank delivery module (10) for a tank (50) of a motor vehicle (100), with a housing (20), with at least one pump arranged in a housing interior of the housing (20) for delivering a fluid from the tank (50), and with a Connection device (30) which is connected to the pump in a fluid-conducting manner and via which the fluid conveyed by means of the pump can be led out of the tank (50) and guided towards at least one consumer, characterized in that the connection device (30) has at least two connections ( 32, 42), via which respective fluid flows of the fluid can be fed to the at least one consumer. Tank delivery module (10) Claim 1 , characterized in that the connection device (30) is introduced into the housing interior at least in some areas. Tank delivery module (10) Claim 1 or 2 , characterized in that the at least two connections (32, 42) are designed for the respective coupling of a pressure line (34, 44) via which the fluid can be supplied to the at least one consumer. Tank delivery module (10) according to one of the preceding claims, characterized in that the tank delivery module (10) comprises a heating device for heating the fluid. Tank delivery module (10) Claim 4 , characterized in that the heating device is integrated into the connection device (30). Tank delivery module (10) according to one of the preceding claims, characterized in that the tank delivery module (10) comprises a sensor for detecting a fluid temperature of the fluid.

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