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Vibration damper for automotive exhaust pipe

A vibration damping device and automobile exhaust technology, which is applied in the direction of exhaust devices, noise reduction devices, adhesive additives, etc., can solve the problems of large space occupation and complex structure, and achieve small space occupation, simple preparation process and good cushioning performance Effect

Inactive Publication Date: 2016-11-23
WUHU EVERSHINE AUTOMOTIVE COMPONENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an automobile exhaust pipe damping device to solve the problem that the existing automobile exhaust pipe damping device usually has a complex structure and takes up a large space

Method used

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  • Vibration damper for automotive exhaust pipe
  • Vibration damper for automotive exhaust pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as Figure 1 to Figure 2 As shown, the present invention provides an automobile exhaust pipe vibration damping device, which includes an intake pipe 1, a vibration damping tube 3 communicating with the air intake pipe 1, and an air outlet pipe 2 communicating with the vibration damping tube 3. When the automobile exhaust pipe damping device of the present invention is in use, it can be installed between the exhaust pipe of the automobile and the engine or transmission. The intake pipe 1 is connected with the engine or transmission, and the outlet pipe 2 is connected with the automobile exhaust pipe. Attenuate engine vibration and improve driving comfort.

[0035] Specifically, the damping cylinder 3 includes a buffer cylinder 32 located inside and a rubber cylinder 31 located outside the buffer cylinder 32; both the intake pipe 1 and the outlet pipe 2 are provided with an annular connecting plate 11, and the annular connecting plate 11 is connected to each other by bo...

Embodiment 2

[0038] The cushioning material for automobile exhaust pipe vibration damping device, from top to bottom, includes the upper polyurethane foam layer, the upper acrylic resin layer, the PET substrate, the lower acrylic resin layer, and the lower polyurethane foam layer. The weight ratio of the 5 layers is 2:3:1:1:2, each layer is bonded by water-based polyurethane adhesive.

Embodiment 3

[0040] The preparation method of buffer material for automobile exhaust pipe damping device, the steps are as follows:

[0041] 1) Pretreatment of PET substrate

[0042] Use acetone to scrub the surface of the PET substrate to remove oil stains, then wipe the PET substrate with a dry cloth, then scrub with ether, and finally dry in a dust-free environment;

[0043] 2) Adhesion and post-treatment of upper and lower acrylic resin layers

[0044] Apply the water-based polyurethane adhesive to the upper and lower sides of the PET substrate, the amount of brushing is 300g / m 2 , Then the acrylic resin layer is compounded on the upper and lower sides of the PET substrate, the extrusion strength is 5Mpa, and the extrusion time is 2 minutes; after bonding, it is placed in a 50 ℃ environment for drying for 3 hours;

[0045] 3) Bonding and post-treatment of the upper and lower polyurethane foam layers

[0046] Apply the water-based polyurethane adhesive to the upper surface of the upper acrylic res...

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Abstract

The invention provides a vibration damper for an automotive exhaust pipe. The vibration damper comprises an intake pipe, a vibration-damping cylinder communicating with the intake pipe and an outlet pipe communicating with the vibration-damping cylinder. The vibration-damping cylinder comprises a buffering cylinder body located in the vibration-damping cylinder and a rubber cylinder located outside the buffering cylinder body. The periphery of the intake pipe and the periphery of the outlet pipe are both provided with annular connecting plates. The annular connecting plates are connected with the end face of the rubber cylinder body through bolts. Rubber blocks are arranged between the annular connecting plates and the end face of the vibration-damping cylinder and arranged on the bolts in a sleeving manner. By arranging the rubber cylinder body and the rubber blocks, the problem that vibration generated by an engine is directly transmitted to the exhaust pipe and an automobile body without attenuation is solved, the driving comfort of a whole automobile is improved, the structure is simple, and the occupied space is small.

Description

Technical field [0001] The invention relates to the technical field of the automobile industry, in particular to an automobile exhaust pipe vibration damping device. Background technique [0002] The automobile exhaust system mainly discharges the exhaust gas emitted by the engine work, while reducing the exhaust gas pollution and noise. Existing automobile exhaust pipes are usually equipped with automobile exhaust pipe damping devices. However, the existing automobile exhaust pipe damping devices are usually complicated in structure and occupy a large space. However, if a shock absorbing device is not installed, it will cause the engine The generated vibration is directly transmitted to the exhaust pipe and the body without attenuation, which seriously affects the driving comfort of the vehicle. Therefore, it is necessary to provide an automobile exhaust pipe vibration damping device to solve the above-mentioned problems. Summary of the invention [0003] The technical problem ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N13/08F01N13/18F01N13/16C09J175/04C09J11/06C08G18/65C08G18/61
CPCF01N13/082C08G18/4009C08G18/61C08G18/6517C08K5/00C08K5/17C08K5/47C09J11/06C09J175/04F01N13/16F01N13/1816F01N13/1855
Inventor 刘华
Owner WUHU EVERSHINE AUTOMOTIVE COMPONENT
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