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Metal foam catalytic purification silencer of automobile engine

An automotive engine, catalytic purification technology, applied in engine components, machines/engines, catalyst carriers, etc., can solve the problems of low exhaust gas conversion, poor noise reduction, low catalytic efficiency, etc., to achieve high exhaust gas conversion rate and reduce disassembly. Maintenance frequency, the effect of rapid catalytic efficiency

Pending Publication Date: 2020-04-17
BEIHAI HUIHUANG LANGJIE ENVIRONMENTAL & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a metal foam catalytic purification muffler for automobile engines, which overcomes the shortcomings of traditional catalytic purification mufflers, such as poor noise reduction effect, low catalytic efficiency, low conversion degree of exhaust gas, and high cost.

Method used

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  • Metal foam catalytic purification silencer of automobile engine
  • Metal foam catalytic purification silencer of automobile engine
  • Metal foam catalytic purification silencer of automobile engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] as attached figure 1 And attached figure 2 As shown, the present invention includes a cylinder body 1, an air inlet 2 at the front end of the cylinder body, and an exhaust port 3 at the rear end of the cylinder body, and a front metal foam catalytic muffler plate 4,750 is sequentially arranged in the cylinder body 1 from the front end to the rear end Mesh metal honeycomb front-end catalyst 5, CDPF 6, 750 mesh metal honeycomb rear-end catalyst 7, rear metal foam decatalysis sound board 8. The thickness of the pre-metal foam catalytic sound-absorbing plate 4 is 5-40 centimeters, which is formed by coating a small amount of cladding catalyst slurry on the metal-foam sound-absorbing plate. The main components of the composite catalyst are rare earth mixtures and precious metals. Although there are various proportions, its preparation and preparation methods are well-known techniques and are not limited in this embodiment. The water absorption rate of the carrier of the m...

Embodiment 2

[0026] as attached image 3 shown, with image 3 It is another embodiment of the present invention. This embodiment is mainly set according to the specific structural arrangement of the automobile engine. In this embodiment, the cylinder body 1 of the catalytic purification muffler is divided into two independent cylinder bodies. The cylinder of the body is provided with a front metal foam catalytic muffler plate 4, a 750-mesh metal honeycomb front-end catalyst 5 and CDPF6, and a 750-mesh metal honeycomb rear-end catalyst 7 and a rear metal foam catalytic muffler plate 8 are arranged in the latter cylinder , the front and rear cylinders are connected by air pipe 10, and the connection method is welding, or fastened by hoop 9, and the front and rear cylinders are connected to form a "U"-shaped arrangement. Except for the arrangement of the two cylinders, the working principle and working state are the same as those in Embodiment 1.

Embodiment 3

[0028] as attached Figure 4 shown, with Figure 4 It is another embodiment of the present invention. This embodiment is mainly set according to the specific structural arrangement of the automobile engine. In this embodiment, the cylinder body 1 of the catalytic purification muffler is divided into two independent cylinder bodies. The cylinder of the body is provided with a pre-catalyzed metal foam anechoic plate 4, a 750-mesh metal honeycomb front-end catalyst 5 and CDPF6, and a 750-mesh metal honeycomb rear-end catalyst 7 and a rear metal foam catalytic anechoic plate 8 are arranged in the latter cylinder , the front and rear cylinders are connected by an air pipe 10, and the connection method is welding, or fastened by a hoop 9, and the front and rear cylinders are connected to form an "S"-shaped arrangement. Except for the arrangement of the two cylinders, the working principle and working state are the same as those in Embodiment 1.

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Abstract

The invention discloses a metal foam catalytic purification silencer of an automobile engine. The metal foam catalytic purification silencer comprises a front metal foam catalytic silencing plate, a 750-mesh metal honeycomb front-end catalyst, CDPF, a 750-mesh metal honeycomb rear-end catalyst and a rear metal foam catalytic silencing plate which are sequentially arranged in a cylinder from the front end to the rear end. According to the invention, the front metal foam catalytic silencing plate, the 750-mesh metal honeycomb front-end catalyst, the CDPF, the 750-mesh metal honeycomb rear-end catalyst and the rear metal foam catalytic silencing plate are scientifically and reasonably arranged and combined, so that waste gas and harmful particles exhausted by the gasoline engine from low-speed starting to high-speed running and even high-speed running of a cold vehicle are effectively converted and intercepted, meanwhile, noise is also eliminated, and the decibel of the noise is superiorto the national standard. Through detection of a waste gas detection test bed, when 15 g of aprecious metal is adopted per cubic foot, the catalytic conversion rate of waste gas is 97% or above, and the catalytic conversion rate of waste gas adopted per cubic foot in a traditional structure is 70% or below.

Description

technical field [0001] The invention relates to a metal foam catalytic purification muffler for an automobile engine. The automobile engine refers to an engine fueled by gasoline or natural gas, and belongs to the technical field of preparation of a catalytic muffler for an automobile engine. Background technique [0002] With the improvement of environmental protection requirements, the emission standards for automobiles are gradually increasing. At present, the exhaust emissions of gasoline passenger vehicles have been required to meet the emission standards of China VI. To meet the emission standards of China VI, it is necessary to carry out the traditional catalytic purification muffler. Technological progress, upgrading. The traditional catalytic purification muffler system is composed of an independently set muffler and an independently set catalytic converter. The muffler used is an open-hole muffler pipe. There are many muffler structures, muffler pipes and accessori...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N13/00F01N13/18F01N3/035F01N3/10F01N3/28
CPCF01N13/00F01N13/0097F01N13/1844F01N3/0335F01N3/035F01N3/101F01N3/28F01N3/281F01N3/2885F01N2230/02F01N2230/04F01N2250/02F01N2330/02Y02A50/20
Inventor 刘柳成林刘光文杨晓桐孙强陈祥栋黎兆彩
Owner BEIHAI HUIHUANG LANGJIE ENVIRONMENTAL & TECH
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