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Urea pump module

A technology for urea pumps and components, which is applied in the direction of pump components, variable displacement pump components, vehicle components, etc., and can solve the problems of flange damage, small filter area, repair cost and maintenance cost increase

Inactive Publication Date: 2018-10-16
HYUNDAI MOTOR CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the urea aqueous storage system, the storage tank may freeze sequentially from its bottom to its top when urea freezes, thus undergoing volume expansion and greater deformation at its upper end
Therefore, when the pump assembly is mounted on top, there is a risk of damage to the flange due to freezing
[0008] In addition, the pump assembly does not allow filter replacement alone, which results in increased repair costs and maintenance costs
In addition, less urea is collected due to the smaller filter area of ​​the filter

Method used

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  • Urea pump module
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Embodiment Construction

[0031] Reference will now be made in detail to various embodiments of the invention, examples of which are illustrated in the accompanying drawings and described below. While the invention will be described in conjunction with exemplary embodiments, it will be understood that present description is not intended to limit the invention to those exemplary embodiments. On the contrary, the invention is intended to cover not only the exemplary embodiments but also various alternatives, modifications, equivalents and other alternatives, modifications, equivalents and others, which may be included within the spirit and scope of the invention as defined by the appended claims. implementation plan.

[0032] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, thereby allowing those skilled in the art to easily implement the present invention.

[0033] The advantages and features of the present invention an...

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Abstract

A urea pump module in a urea tank, which is filled with an aqueous urea solution, to supply the urea solution to an exhaust line may include: a flange device disposed to close a mounting hole formed through a bottom surface of the urea tank; a pump device having an inlet port for introduction of the urea solution and an outlet port connected to a discharge portion of the flange device, the pump device providing pumping force to discharge the urea solution from the urea tank; a first filter device coupled to an internal to the flange device to surround the pump device and serving to filter theurea solution to be introduced into the pump device; and a second filter device coupled to a top portion of the flange device to cover the pump device and serving to discharge air generated inside thepump device outward.

Description

technical field [0001] The present invention relates to a urea pump assembly, and more particularly, to a urea pump assembly that prevents foreign substances from being introduced into the urea pump and ensures smooth discharge of air in a filter. Background technique [0002] In general, environmentally friendly vehicles are being developed worldwide, and vehicle exhaust emission standards are gradually becoming stricter in each country. [0003] In addition, due to regulations related to carbon dioxide, vehicle manufacturers have developed environmentally friendly diesel vehicles. Here, the main components of the exhaust gas of a diesel vehicle are nitrogen oxides and particulate matter. Among them, LNT and urea-SCR are attracting attention as nitric oxide reduction technologies. [0004] In particular, urea-SCR can be used to reduce nitrogen oxides emitted from diesel engines of large vehicles. [0005] Urea-SCR is a selective reduction system in which harmless urea is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/20F04B53/20
CPCF01N3/2066F01N2610/02F01N2610/1426F01N2610/1433F04B53/20B01D19/0031B01D29/114B01D35/26F01N2610/14F16H57/0006Y02T10/12Y02A50/20B01D53/94F01N3/10F01N3/28B60K17/00F01N3/20F01N3/2896
Inventor 李性元崔承训朴埈莹李泰允黄龙泽崔日圭全赞尧曹富铉
Owner HYUNDAI MOTOR CO LTD