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A tightly arranged engine exhaust gas treatment system

An exhaust gas treatment and engine technology, which is applied to engine components, combustion engines, machines/engines, etc., can solve the problems of low processing efficiency, poor stability, and difficulty in installing after-treatment systems, so as to improve catalytic efficiency, short path, and avoid exhaust gas The effect of temperature reduction

Active Publication Date: 2022-04-12
DONGFENG AUTOMOBILE COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems of difficult installation, poor stability, and low processing efficiency of the existing post-processing systems that meet the National VI standards in the prior art, and provide a compact structure, good stability, and high processing efficiency. Tight arrangement after treatment assembly

Method used

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  • A tightly arranged engine exhaust gas treatment system
  • A tightly arranged engine exhaust gas treatment system
  • A tightly arranged engine exhaust gas treatment system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] The exhaust manifold 2, the post-processing assembly 3 and the supercharger 4 are all fixed to the side of the engine 1; the rear treatment assembly 3 includes a selective catalytic reduced particulate capture 31, an oxidation catalyst 32 And the mixer assembly 33, the selective catalytic reduced particulate trap 31 is located below the oxidation catalyst 32, the rear end of the selective catalytic reduction particulate material trapping 31 through the mixer assembly 33 and an oxidation catalyst The rear end of 32 is connected, selectively catalytic reduced particulate trap 31, the oxidation catalyst 32, and the mixer assembly 33 is arranged in a U-shaped arrangement; the exhaust manifold 2 is disposed between the engine 1 and the oxidation catalyst 32. The front portion of the exhaust manifold 2 is in communication with the front end of the supercharger 4 and the oxidation catalyst 32, and the exhaust manifold 2, and the supercharger 4 selectively catalytic reduced particu...

Embodiment 2

[0070] Example 2 is basically the same as that of Example 1, there is different from:

[0071]The engine 1 includes a cylinder body 11 and a cylinder head 12 fixed to the top of the cylinder 11, the top of the mixer assembly 33 is connected to the cylinder head 12 by the upper fixing bracket 6, the bottom of the oxidation catalyst 32. The lower fixing bracket 7 is connected to the side portion of the cylinder 11; one side of the exhaust manifold 2 has a plurality of manifold intake portions corresponding to the engine exhaust port, the manifold into the air 21 The engine exhaust port is sealed with the side portion of the cylinder head 12, and the manifold inlet 21 is provided with a manifold mounting flange 23, and the exhaust manifold 2 is fixed to the cylinder head 12 by the manifold mounting flange 23; The front end of the oxidation catalyst 32 is fixedly disposed, and the rear treatment assembly is provided; the turboe of the supercharger 4 is provided with a turbine outlet f...

Embodiment 3

[0073] Example 3 was substantially the same as in Example 2, and the difference is:

[0074] The supercharger 4 and the outer wall of the exhaust manifold 2 have a heat insulating layer;

[0075] The bottom of the oxidizing catalyst 32 is connected by the top of the auxiliary bracket 35 and the selective catalytic reduction of the top end of the front end of the particle trap 31, and the auxiliary bracket 35 and the mixer assembly 33 form a hot air retaining area 36 The rear end of the selective catalytic reduced particulate matter trap 31 is connected to the rear end of the oxidation catalyst 32 through the mixer assembly 33, and the front end of the selective catalytic reduction particle capture device 31 is sealed with the vehicle exhaust tail tubular Connection; the supercharger 4 includes a pressure gant portion and a turbine portion that secure the front end of the turbine portion and the rear end of the pressure gas portion, the rear end of the turbine portion being the tur...

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Abstract

A tightly arranged engine exhaust gas treatment system includes an exhaust manifold fixed on one side of the engine, an aftertreatment assembly and a supercharger, and the aftertreatment assembly includes a particulate matter trap for selective catalytic reduction, an oxidation catalyst and a mixing The rear end of the selective catalytic reduction particulate matter trap is connected to the rear end of the oxidation catalyst through the mixer assembly, and the selective catalytic reduction particulate matter trap, oxidation catalytic converter and mixer assembly are in the form of U-shaped arrangement; the exhaust manifold is arranged between the engine and the oxidation catalyst, the front of the exhaust manifold communicates with the front end of the oxidation catalyst through the supercharger, and the exhaust manifold, the supercharger and the selector The catalytic reduction particulate trap 31 is arranged in a U shape; the side of the exhaust manifold communicates with the engine exhaust port on the side of the engine. The design is compact, and the path of exhaust gas flow is short, the heat loss of exhaust gas is small, the conversion efficiency of catalyst is high, and it meets strict emission standards.

Description

Technical field [0001] The present invention relates to an engine post-processing structure, and more particularly to a projection of an engine exhaust gas treatment system, which is specifically suitable for processing of engine exhaust. Background technique [0002] The engine post-processing assembly is an integrated multi-function assembly structure. When the engine is working, the post-treatment acts to flow through the exhaust gas, collect energy reuse, the particulate matter in the exhaust gas, and the pollutants in the exhaust gas and the effect of the exhaust gas reach the emission requirements. [0003] At present, as the country's emission regulations are upgraded, the national sixth stage motor vehicle pollutant emission standards are implemented, and the engine's post-treatment emissions put forward more stringent restrictions, existing vehicles that meet the national sixth phase of motor vehicle pollutant emission standards The rear processing system with diesel eng...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N3/035F01N3/10F01N13/10F01N13/18F01N3/20F01N3/28F02B37/00
CPCF01N3/035F01N3/106F01N13/10F01N13/102F01N13/1805F01N3/2066F01N3/2892F02B37/00Y02T10/12
Inventor 陈震毛勇余国强邓基峰江琳琳刘凯程庆姚强殷勇刘蓉赵昌鹏潘师民王亚强
Owner DONGFENG AUTOMOBILE COMPANY
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