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Apparatus for supplying liquid additives

A technology of liquid additive and main body, applied in exhaust devices, mufflers, machines/engines, etc., can solve problems such as additive freezing

Active Publication Date: 2018-09-14
VTESCO TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A problem with this device is that additives (eg urea-water solution) freeze at low temperatures

Method used

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  • Apparatus for supplying liquid additives
  • Apparatus for supplying liquid additives
  • Apparatus for supplying liquid additives

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] The devices 1 each have an assembly body 2 on which at least one hydraulic component 4 for delivering a liquid additive, for example a urea-water solution, is arranged. Such hydraulic components 4 may be eg pumps, sensors and / or valves. The hydraulic components 4 are interconnected on the assembly body 2 via delivery ducts 24 through which delivery of the liquid additive takes place. The component body 2 has a cutout 7 . The plugboard 3 is fastened on the assembly main body 2 . The electrical components 6 and the heater 5 are installed on the board 3 . Plate 3 and assembly main body 2 all have in assembled state (such as figure 1 Shown) is a plug-in connector 26 forming a plug-in connection 25 via which the hydraulic components 4 on the component body 2 and the electrical components 6 on the plug-in board 3 are electrically connected to each other.

[0049] figure 2 shows before the board 3 has been installed on the assembly body 2 figure 1 Design variants of dev...

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PUM

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Abstract

A device (1) for supplying liquid additives, having an assembly body (2) on which at least one hydraulic component (4) for the operation of the device (1) is mounted, and having a flashing plate (3 ), which is fastened to the assembly body (2) and on which at least one electric heater (5) and at least one further electrical component (5) for the operation of the device (1) are mounted, wherein the electric heater (5) extending from the board (3) into the cutout (7) of the assembly body (2).

Description

technical field [0001] The invention relates to a device for supplying a liquid additive, in particular for supplying a urea-water solution for an exhaust system. Such a device can be used, for example, to supply a liquid additive to an exhaust gas treatment device of a motor vehicle. Background technique [0002] In the automotive sector, exhaust gas treatment devices are also used in which the pollutants of the exhaust gas are reduced by means of reducing agents. The exhaust gas purification treatment performed in this context is the Selective Catalytic Reduction (SCR) method in which nitrogen oxide compounds in the exhaust gas are reduced by means of ammonia to form harmless substances such as water, nitrogen and carbon dioxide. The reducing agent convertible to form ammonia may be supplied to the exhaust gas treatment device in the form of a liquid additive. The conversion to ammonia takes place in the exhaust gas thermally and / or hydrolytically (by means of a hydrolys...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N3/20
CPCF01N3/2066F01N2610/02F01N2610/10F01N2610/1406Y02A50/20Y02T10/12F01N3/206F01N3/208
Inventor G·马甘P·默特斯C·迪乌夫F·弗雷德里克森S·舍佩尔斯J·霍格森
Owner VTESCO TECH GMBH