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Secondary air supply structure of engine and air filter for secondary air supply

A secondary air supply and air filter technology, which is applied to engine components, machines/engines, combined air filters and mufflers, etc., to achieve the effects of compact structure, noise reduction, and intake noise reduction

Inactive Publication Date: 2008-09-24
LONCIN MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned noise problems existing in the current secondary air supply structure, the purpose of the present invention is to provide an engine with a secondary air supply structure, which can reduce the noise of the secondary air supply valve

Method used

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  • Secondary air supply structure of engine and air filter for secondary air supply
  • Secondary air supply structure of engine and air filter for secondary air supply

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Such as figure 2 As shown, it is a structural schematic diagram of a secondary air supply air filter, which includes a cylindrical shell 1 and a rear cover 4. The rear cover 4 is a flange-shaped structure connected with the air outlet pipe 5 as a whole. The edge part is welded together with the shell 1 to form the shell of the whole secondary air filter. The other end of the casing 1 also has an air intake pipe 7 connected with the casing 1 as a whole. There is a microporous filter paper filter element 3 in the housing 1, the filter element 3 is coaxial with the air inlet pipe 7, the air outlet pipe 5, and the housing 1, and one end is bonded to the rear cover 4, and its central hole is connected with the air outlet pipe 5 , the other end is glued with a galvanized steel plate bottom cover 2, the other end of the center hole of filter element 3 is sealed, so that air can only enter through microporous paper filter element 3, to filter air. An annular ventilation gap ...

Embodiment 2

[0023] An engine with a secondary gas supply structure, such as figure 1 As shown, it includes an engine, an air filter connected to the carburetor, and a secondary air supply valve of the engine, and also includes a secondary air supply air filter, which is connected to the inlet of the secondary air supply valve. In order to separate the sound source, the air filter connected to the carburetor and the intake air of the secondary air supply valve are separated to reduce noise.

[0024] The structure of the air filter for secondary supplementary air can adopt the structure in Embodiment 1 to further reduce the intake noise of secondary supplementary air and achieve a better noise reduction effect.

[0025] The advantages of this secondary air supply structure and secondary air supply air filter are: small structure, convenient and flexible installation, simplified process, installation position can be adjusted according to different models, no longer limited to the position of...

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Abstract

The invention relates to a secondary gas feeder of engine, which comprises an engine, the first filter connected to the carburetor, the secondary gas feeding valve of engine and a secondary gas feeding filter. Wherein, the secondary gas feeding filter is connected to the inlet of secondary gas feeding valve. And the invention also discloses a secondary gas feeding filter, whose gas inlet tube has micro holes. The invention can reduce the gas inlet noise of engine.

Description

technical field [0001] The invention relates to a secondary air supply structure of an engine, and also relates to a secondary air supply air filter used in the secondary air supply structure. Background technique [0002] After the implementation of the national "Phase II" emission standard, many motorcycles have added a secondary air supply device, which can effectively reduce the exhaust pollutants of motorcycles during use. The air supply valve of the secondary air supply device is directly connected to the air filter connected to the carburetor, that is, the same air filter is used for the primary intake air and the secondary air supply. For some air filters with a relatively thin structure, the reed vibration sound of the air supply valve and the air intake sound of the air filter will be amplified in the air filter cavity, causing the motorcycle to emit "puffy, puffy" noises, which will be misunderstood by users. It is considered that the quality of the motorcycle is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N3/30F02M35/14
Inventor 汪涛
Owner LONCIN MOTOR