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Operating fuel tank

A technology of working fluid and container, applied in the field of working fluid container, can solve problems such as function obstruction of pressure compensating element

Active Publication Date: 2012-02-01
KAUTEX TEXTRON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The function of the pressure compensation element, in particular with the plug made of sintered material, is impeded if it is wetted by a liquid

Method used

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  • Operating fuel tank
  • Operating fuel tank
  • Operating fuel tank

Examples

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Embodiment Construction

[0018] Reductant container 1, as it is in figure 1 shown in , may consist of any material and be produced in any manner. However, the reducing agent container 1 preferably consists of thermoplastic and is obtained by extrusion blow molding. The reducing agent container can be arranged concealed, for example, in the rear region of the motor vehicle body or in the engine compartment of the motor vehicle. The reducing agent container 1 serves to contain urea present in an aqueous solution, which is injected into the exhaust gas line of the motor vehicle upstream of a so-called SCR catalytic converter. Ammonia and carbon dioxide are produced from aqueous urea by hydrolysis. Ammonia reduces nitrogen oxides in the exhaust gas at corresponding temperatures in the SCR catalyst.

[0019] As can be seen in particular from the drawing, a central air inlet and outlet opening 2 is provided on the upper side of the reducing agent container 1 in the installed position, which is used for ...

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Abstract

The invention relates to a reducing agent tank 1 for holding a liquid reducing agent as a so-called SCR tank. The SCR tank comprises at least one device for deaerating the tank, which device is closed off by means of at least one pressure-compensating element which permits an exchange of gas but which closes off the tank in a pressure-tight manner. The reducing agent tank (1) also comprises at least one deaeration line (5) which communicates with the pressure-compensating element, with the deaeration line (5) being guided at least to a point above the maximum permissible fording level of the tank when the tank is in the installation position. The deaeration line (5) has at least one first downward-sloping line section (5a) which branches into a second rising line section (5b) for deaeration and a third falling line section (5c) for gravity-induced condensate drainage (FIG. 1), at least the third falling line section (5c) is aided for blow-down valve closing.

Description

technical field [0001] The invention relates to a working fluid container for a motor vehicle, in particular to a reducing agent container for accommodating a liquid reducing agent for catalytic denitrification of exhaust gas. The so-called SCR method is frequently used in the exhaust gas purification of diesel vehicles, mainly in commercial vehicles. SCR stands for Selective Catalytic Reduction, in which nitrogen oxides are reduced with the aid of ammonia. Here, the required ammonia is injected, for example in the form of aqueous urea, into the exhaust gas path upstream of the SCR catalytic converter. Ammonia and carbon dioxide are produced from aqueous urea by hydrolysis. Ammonia can react with nitrogen oxides in the exhaust gas at corresponding temperatures in the catalytic converter. Background technique [0002] A reducing agent container for urea present in aqueous solution is usually provided in the vehicle concerned. Urea releases ammonia, which causes unpleasant...

Claims

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Application Information

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IPC IPC(8): F01N3/20B60K15/035
CPCF01N2610/1413Y02T10/24F01N2610/02F01N2610/1466F01N3/2066F01N2610/1406Y02T10/12Y10T137/3021Y10T137/3093Y10T137/6881Y10T137/86324Y02A50/20B60K15/035F01N3/20
Inventor R·科尔贝格J·马格洛夫斯基R·施韦尔V·特洛伊特
Owner KAUTEX TEXTRON
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