Silencer for automobile vaporizer tube

A technology of evaporating tube and muffler, applied in the direction of tube element, engine element, machine/engine, etc.

Pending Publication Date: 2021-07-13
SHANGHAI CHINAUST AUTOMOTIVE PLASTICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a muffler for automobile fuel evaporative pipes in order to overcome the defect of obvious noise in the fuel evaporative emission control system in the prior art

Method used

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  • Silencer for automobile vaporizer tube
  • Silencer for automobile vaporizer tube
  • Silencer for automobile vaporizer tube

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0038] The present invention is further illustrated below by means of examples, but the present invention is not limited to the scope of the examples.

[0039] In describing the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device Or elements must have a certain orientation, be constructed and operate in a certain orientation, and thus should not be construed as limiting the invention.

[0040] By connecting a pipe section with a sudden change in cross-sectional area or a resonant cavity next to the pipe, using the change in acoustic impedance, the sound waves of certain f...

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PUM

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Abstract

The invention discloses a silencer for an automobile vaporizer tube. The silencer comprises an upper shell, a lower shell and an elastic membrane, wherein the upper shell is externally connected with a first connecting module with two through ends; the lower shell is externally connected with a second connecting module with two through ends; the upper shell and the lower shell are mutually connected to form an expansion cavity; the elastic membrane is located in the expansion cavity, and divides the expansion cavity into a first cavity and a second cavity; the first connecting module is communicated with the first cavity; the second connecting module is communicated with the second cavity; communicating holes are formed in the elastic membrane; and the first cavity is communicated with the second cavity through the communicating holes. The elastic membrane in the expansion cavity of the silencer can increase airflow buffering, noise elimination in a larger waveband range is achieved, and the silencing effect of the silencer is improved.

Description

technical field [0001] The invention relates to a muffler for an automobile fuel evaporation pipe. Background technique [0002] In order to reduce vehicle emissions, in 1995, my country stipulated that new vehicles must be installed with evaporative emission control system (EVAP). In this system, the carbon tank solenoid valve controls the gas in the carbon tank to enter the intake manifold and enter the engine to participate in combustion, which plays a role in energy saving and emission reduction. The change in China VI is the increase of the capacity of the carbon tank, the increase of the inner diameter of the desorption pipeline, the carbon tank solenoid valve produces greater pressure pulsation when the throttle is opened, and the noise problem that was not obvious before began to stand out. [0003] How to reduce the low-frequency noise in the fuel evaporative emission system and how to realize the miniaturization of the muffler are the problems that the fuel evapor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/033F02M25/08
CPCF02M25/0872F16L55/033F16L55/0338
Inventor 高剑严丁刘高健峰张宁宁陈绍春毛成思冯炜
Owner SHANGHAI CHINAUST AUTOMOTIVE PLASTICS CORP
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