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an exhaust muffler

An exhaust muffler and airflow technology, which is applied in the field of auto parts, can solve the problems of large exhaust backpressure, regeneration noise, and high inlet flow velocity, and achieve the effects of reducing airflow velocity, reducing exhaust backpressure, and improving noise reduction effect

Active Publication Date: 2018-10-30
浙江创格科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The exhaust back pressure of the existing muffler is relatively large, which has a certain impact on the power consumption of the engine. The inlet flow rate is high, and the airflow has a greater impact on the exhaust noise. The main manifestations are: the airflow can change the propagation law of sound waves in the muffler , and may also generate regenerative noise

Method used

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Examples

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Embodiment Construction

[0026] like figure 1 and figure 2 As shown, an exhaust muffler includes a muffler main body 1. The muffler main body 1 includes a cylinder body 10 and a cylinder cover 11 closing the axial ends of the cylinder body. The cylinder body 10 is connected to the intake pipe on the first axial side. 2. The air outlet pipe 3 is connected to the second side in the axial direction, and the air inlet pipe 2 and the air outlet pipe 3 are provided with perforations inside the cylinder body 10 . At least one airflow blocking unit is sequentially provided in the inner cavity of the barrel from the first side to the second side in the axial direction.

[0027] Wherein, the air flow blocking unit includes a first support partition, a second support partition and an intermediate chamber formed between them, a perforated tube connected at both ends passes through the first support partition and the second support partition Passing through the center, the first supporting partition passes thro...

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Abstract

The invention discloses an exhaust silencer. The exhaust silencer comprises a barrel body, wherein an air inlet pipe is connected onto the first side of the axial direction of the barrel body; an air outlet pipe is connected to the second side of the axial direction of the barrel body; at least one air stream baffle unit which is used for baffling air streams so as to reach a silencing effect is sequentially arranged in the inner cavity of the barrel body from the first side to the second side axially; each air stream baffle unit comprises a first supporting clapboard, a second supporting clapboard and a middle cavity which is formed between the first supporting clapboard and the second supporting clapboard; a perforated pipe which is through in two ends penetrates through the central parts of the first supporting clapboard and the second supporting clapboard; and at least one communication pipe which is through in two ends penetrates through the first supporting clapboard around the perforated pipe. According to the exhaust silencer, air streams are baffled through the air stream baffle units; and meanwhile, air stream speed and exhaust back pressure are lowered, so that the silencing effect of the silencer is further improved.

Description

technical field [0001] The invention relates to auto parts, in particular to an exhaust muffler. Background technique [0002] The noise generated by the diesel engine is mainly composed of combustion, mechanical noise and aerodynamic noise, among which the exhaust noise in the aerodynamic noise is the most prominent, becoming the main factor of environmental noise pollution. The most effective way to reduce exhaust noise is to use an exhaust muffler. Therefore, in order to reduce the noise of the engine, it is an important means to reduce the noise of the diesel engine to develop a muffler with large noise reduction and low exhaust resistance (back pressure). [0003] The exhaust back pressure of the existing muffler is relatively large, which has a certain impact on the power consumption of the engine. The inlet flow rate is high, and the airflow has a greater impact on the exhaust noise. The main manifestations are: the airflow can change the propagation law of sound wav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N1/08F01N1/10F01N13/14
CPCF01N1/082F01N1/089F01N1/10F01N13/14
Inventor 章志明
Owner 浙江创格科技股份有限公司
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