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engine exhaust muffler

An exhaust muffler and engine technology, which is applied in the direction of engine components, machines/engines, exhaust treatment, etc., can solve environmental pollution and other problems, and achieve the effect of good safety and operability, and good purification treatment effect

Active Publication Date: 2019-05-21
上海斯瑞佛汽车零部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are certain defects in the above-mentioned engine exhaust muffler and most of the existing exhaust mufflers: there are some HC, CO and particulate matter in the exhaust gas, which are directly discharged to the outside of the exhaust pipe after passing through the rear muffler , the exhaust gas has not been purified, and it is easy to pollute the surrounding environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: a kind of engine exhaust muffler, such as figure 1 with image 3 As shown, it includes an exhaust pipe 1. The exhaust pipe 1 includes an air inlet 2 and an air outlet 3 for the exhaust gas to enter and exit. There are two air inlets 2, which are respectively located on the sides of the two ends of the exhaust pipe 1. , located at one end face of the exhaust pipe 1; two partitions 9 parallel to each other are arranged in the exhaust pipe 1, and the two partitions 9 are arranged along the length direction of the exhaust pipe 1, and the two partitions 9 will exhaust The inside of the tube 1 is divided into three chambers, namely the left chamber 4, the middle chamber 5 and the right chamber 6, wherein the left chamber 4 and the right chamber 6 communicate with the two air inlets 2 respectively;

[0035] Two partitions 9 are provided with the first muffler pipe 8 passing horizontally, the first muffler pipe 8 includes a left pipe body 803, a middle pipe body ...

Embodiment 2

[0046] Embodiment 2: a kind of engine exhaust muffler, such as Image 6 As shown, the difference from Embodiment 1 is that in this embodiment, the side of the knob 14 is provided with a plurality of positioning holes 23 arranged and distributed along the circumferential direction of the knob 14, and the outer wall of the exhaust pipe 1 is provided with The positioning hole 23 is positioned to fit the elastic protrusion 21;

[0047] When in use, the knob 14 is rotated so that the elastic protrusion 21 can be elastically positioned and matched with the positioning holes 23 at different positions on the knob 14 .

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Abstract

The invention discloses an exhaust muffler of an engine. The exhaust muffler comprises a gas exhaust tube, wherein a left chamber, a middle chamber and a right chamber as well as a first muffling tube which are arranged in the length direction of the gas exhaust tube are arranged in the gas exhaust tube; the first muffling tube comprises a left tube body positioned in the left chamber, a right tube body positioned in the right chamber and a middle tube body positioned in the middle chamber; a first muffling hole is formed in each of the left tube body, the right tube body and the middle tube body; a second muffling tube which communicates with a gas outlet is formed in the middle chamber; a second muffling hole which is positioned in the middle chamber is arranged on the second muffling tube; the left chamber and the right chamber communicate with a gas inlet; a cover barrel which sleeves the middle tube body is arranged in the middle chamber; a cover hole which penetrates the inside and the outside of the cover barrel is formed in the cover barrel; a cavity filled with urea is arranged in the cover barrel; the cavity communicates with the cover hole; and tail gas is purified before being exhausted, so that the tail gas is prevented from causing pollution on a surrounding environment after being exhausted.

Description

technical field [0001] The invention relates to the technical field of engine noise reduction, in particular to an engine exhaust muffler. Background technique [0002] Exhaust noise is the main noise source of the engine. Installing a muffler is the most effective way to control exhaust noise. Generally, a muffler is installed in the exhaust pipe of an automobile engine to consume airflow energy and reduce the pressure fluctuation of the airflow. to reduce noise. [0003] At present, in the prior art, in a Chinese patent document with the authorized announcement number CN201546787U, a kind of engine exhaust muffler is recorded. Three partitions are set to form three cavity areas inside the pre-stage muffler. There are muffler holes on the pipe walls of the pre-stage inner pipe and the pre-stage outlet pipe to reduce noise. [0004] However, there are certain defects in the above-mentioned engine exhaust muffler and most of the existing exhaust mufflers: there are some HC,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N1/08F01N3/20F01N13/08
CPCF01N1/082F01N3/2073F01N13/082F01N2610/02
Inventor 吴晓丹
Owner 上海斯瑞佛汽车零部件有限公司