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Sound attenuation device for automobile engine

An automobile engine and muffler technology, which is applied to mufflers, engine components, machines/engines, etc., can solve the problems of insufficient muffler effect and unreasonable design of muffler, and achieve the effect of good muffler effect and enhanced muffler effect.

Inactive Publication Date: 2018-12-11
曹文东
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is generally necessary to install a noise reduction device at the exhaust port of the engine, but the design of the traditional noise reduction device is not reasonable enough, and the noise reduction effect is not obvious enough

Method used

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  • Sound attenuation device for automobile engine

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Embodiment Construction

[0011] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0012] see figure 1 , the present invention provides a technical solution: a noise reduction device for an automobile engine, comprising an outer casing 2, an air intake pipe 8 is installed in the middle of the left end of the outer casing 2, and an exhaust pipe 1 is installed at the right end of the outer casing 2, and the outer casing 2 A cylindrical inner casing 11 is installed inside the inner casing 11, and a vacuum chamber 3 is formed between the outer s...

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Abstract

The invention discloses a sound attenuation device for an automobile engine. The device comprises an outer shell, an air inlet pipe is installed in the middle of the left end of the outer shell, and an air discharge pipe is installed at the right end of the outer shell; a cylindrical inner shell is installed in the shell, a vacuum cavity is formed between the outer side face of the inner shell andthe inner side face of the outer shell; hemispherical sound attenuation salient points are evenly distributed on the inner side face of the inner shell, a vertical circular partition plate is installed in the middle of the inner shell, first flow division holes are formed circumferentially in the circular partition plate at equal intervals, and the middle of the left side face of the circular partition plate is connected with the right end of the air inlet pipe. According to the sound attenuation device for the automobile engine, a second flow division hole is formed in the air inlet pipe connected with an air discharge port of the engine and used for conducting flow division on air so that the air can be evenly dispersed in a sound attenuation cylinder; first sound attenuation holes evenly distributed in the sound attenuation cylinder are used for conducting flow guide dispersion on the air, energy brought by the air cancels each other out, and the noise reduction aim is achieved.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to a noise reduction device for an automobile engine. Background technique [0002] The car engine is the engine that provides power for the car. It is the heart of the car and affects the power, economy and environmental protection of the car. According to different power sources, automobile engines can be divided into diesel engines, gasoline engines, electric vehicle motors, and hybrid power. The piston does work and converts it into mechanical energy, which is the most basic principle of the engine. It is generally necessary to install a noise reduction device at the exhaust port of the engine, but the design of the traditional noise reduction device is not reasonable enough, and the noise reduction effect is not obvious enough. Contents of the invention [0003] The object of the present invention is to provide a noise reduction device for an automobile engine to solve the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N1/00F01N1/08
CPCF01N1/00F01N1/08F01N1/082
Inventor 佘峰
Owner 曹文东
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