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Exhaust aftertreatment device of engine and disassembling method

An exhaust after-treatment and engine technology, which is applied to exhaust devices, engine components, combustion engines, etc., can solve the problems of inconvenient operation of diesel particulate filters, large installation space for flat clamps, and high costs, and increase conversion efficiency. and longevity, the effect of great convenience

Active Publication Date: 2018-12-25
TENNECO SUZHOU EMISSION SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large installation space occupied by the flat clamp and the high cost, it is inconvenient to dismantle the diesel particulate filter

Method used

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  • Exhaust aftertreatment device of engine and disassembling method
  • Exhaust aftertreatment device of engine and disassembling method
  • Exhaust aftertreatment device of engine and disassembling method

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Embodiment Construction

[0030] Please refer to Figure 1 to Figure 11 As shown, the present invention discloses an engine exhaust aftertreatment device 100 , which includes a housing 1 and several aftertreatment components located in the housing 1 . Wherein, the casing 1 includes an inlet assembly 10 for communicating with the exhaust gas of the engine. The several post-treatment components include a diesel oxidation catalyst component 2 communicated with the inlet component 10, a diesel particulate filter located downstream of the diesel oxidation catalyst component 2 and communicated with the diesel oxidation catalyst component 2 assembly 3 and two selective catalytic reduction assemblies 4 located downstream of said diesel particulate filter assembly 3 . The diesel particulate filter assembly 3 and the diesel oxidation catalyst assembly 2 are arranged on the same straight line. The engine exhaust aftertreatment device 100 also includes a mixing pipe 5 and a connecting plate 6 connected between t...

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Abstract

An exhaust aftertreatment device of an engine comprises a shell and a plurality of aftertreatment assemblies located in the shell. Each aftertreatment assembly comprises a diesel engine oxidation catalytic converter assembly and a diesel oil particle filter assembly which is located on the downstream side of the diesel engine oxidation catalytic converter assembly and communicates with the dieselengine oxidation catalytic converter assembly. Each diesel engine oxidation catalytic converter assembly is detachably installed on the shell through a binding band. One end of each diesel oil particle filter assembly is detachably connected with the diesel engine oxidation catalytic converter assembly through a first clamp hoop, and the other end of each diesel oil particle filter assembly is detachably connected with an installation flange through a second clamp hoop. In this way, the diesel oil particle filter assemblies are convenient to detach. The invention further relates to a disassembling method.

Description

technical field [0001] The invention relates to an engine exhaust aftertreatment device and a dismantling method for dismantling a diesel particulate filter assembly. Background technique [0002] Engine exhaust after-treatment devices (such as diesel engine exhaust after-treatment devices) are mainly devices used to treat or purify toxic and harmful substances in exhaust. Toxic substances in exhaust mainly include hydrocarbons, carbon monoxide, nitrogen oxides and particulate matter. [0003] In the prior art, there has been a solution combining a diesel oxidation catalyst (DOC), a diesel particulate filter (DPF) and a selective catalytic reduction (SCR) to improve the efficiency of exhaust gas treatment. Diesel particulate filters are prone to clogging after long-term use, thereby affecting the performance of the entire post-processing device. The industry usually needs to design it as a detachable structure for easy maintenance. [0004] The usual way in the industry is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/035F01N3/28
CPCF01N3/035F01N3/2882F01N2450/26F01N2250/02F01N3/033F01N3/28Y02T10/12
Inventor 童毅君于百战王长林任官新
Owner TENNECO SUZHOU EMISSION SYST