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Cooling device of reducing-agent injection module and selective catalyst reduction system having same

A technology of injection module and cooling device, applied in the direction of engine cooling, muffler, exhaust device, etc., can solve problems such as blockage, deformation of reducing agent injection module, and non-circulation of coolant

Active Publication Date: 2016-10-12
DOOSAN INFRACORE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, when the engine is stopped, the coolant pump is also stopped, causing said coolant not to circulate
In this case, the reductant injection module is continuously heated by the high-temperature exhaust pipe, there is deformation of the reductant injection module due to heat, or the injection port of the reductant injection module is damaged by solids evaporated from urea water. The problem of clogging

Method used

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  • Cooling device of reducing-agent injection module and selective catalyst reduction system having same
  • Cooling device of reducing-agent injection module and selective catalyst reduction system having same
  • Cooling device of reducing-agent injection module and selective catalyst reduction system having same

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Embodiment Construction

[0033] Regarding the embodiments of the present invention disclosed in the text, the specific structural and even functional descriptions are listed solely for the purpose of illustrating the embodiments of the present invention. The embodiments of the present invention can be implemented in various forms and shall not be interpreted as Limited to the examples described in the text.

[0034] The present invention can be modified in various ways and can have various forms. Specific embodiments will be listed in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, and should be understood to include all changes, equivalents, and alternatives included in the idea and technical scope of the present invention.

[0035] Terms such as first and second can be used to describe various constituent elements, but the constituent elements shall not be limited by the terms. The terms can be used for the purp...

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Abstract

A cooling device of a reducing-agent injection module comprises: coolant circulation lines that are connected to a module cooling channel to cool the reducing-agent injection module and circulate coolant; a closed-loop circulation line connected to the coolant circulation lines on the front and rear sides of the module cooling channel to make the coolant circulation lines selectively form a closed loop; and at least one heat-dissipation part provided at the closed loop to radiate heat transferred from the module cooling channel through natural convection.

Description

Technical field [0001] The present invention relates to a cooling device of a reductant injection module and a selective catalyst reduction system having the same. More specifically, it relates to a cooling device of a reductant injection module used for exhaust gas aftertreatment of an engine and a selective catalyst reduction system having the same system. Background technique [0002] The selective catalyst reduction device can be provided as an exhaust gas post-treatment device for reducing pollutants contained in exhaust gas discharged from an engine. The selective catalyst reduction device may include a reducing agent injection module for injecting the reducing agent in a flow direction of the exhaust gas. The engine coolant is circulated through a coolant circulation line connected to the reducing agent injection module, which can prevent the reducing agent injection module from being heated by high-temperature exhaust exhaust gas. [0003] However, when the engine is stop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/24
CPCF01N3/208F01N2610/11Y02T10/12B01D53/9418F01N3/2066F01N2610/1453F01P5/10F28D15/02
Inventor 金银炯崔南一
Owner DOOSAN INFRACORE CO LTD
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