Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Noise reduction device for automobile engine

An automotive engine and noise reduction technology, applied in engine components, machines/engines, exhaust devices, etc., can solve the problems of high production cost, difficult to meet production needs, heavy mufflers, etc., to reduce noise, increase the reduction effect, and reduce collision. Noise reduction effect

Active Publication Date: 2019-10-18
WEST ANHUI UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The material used in the existing muffler is usually a steel structure. The muffler is formed into the required shape by steel welding, and the muffler cylinder is fixed in the steel cylinder. The muffler of this type of structure is heavy and the production cost is relatively high. It is difficult to meet the current production demand

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Noise reduction device for automobile engine
  • Noise reduction device for automobile engine
  • Noise reduction device for automobile engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] see Figure 1~4 , a noise reduction device for an automobile engine, comprising a noise reduction housing 1, an air intake pipe 2 and an air outlet pipe 17, the noise reduction housing 1 is a circular tube structure, and the left end of the noise reduction housing 1 is connected to the air intake pipe 2. The right end of the noise reduction housing 1 is connected to the air outlet pipe 17. The axis of the noise reduction housing 1 coincides with the axis of the intake pipe 2 and the axis of the air outlet pipe 17. The noise reduction housing 1 includes an outer shell 101, Sound-insulating layer 102, sound-absorbing layer 103, temperature-insulating layer 104 and high-temperature-resistant layer 105, the inner wall of the outer casing 101 is provided with a sound-insulating layer 102, and the sound-insulating layer 102 is made of a sound-insulating board, and the sound-insulating layer The inner cavity wall of 102 is provided with a sound-absorbing layer 103, the inner c...

Embodiment 2

[0034]This embodiment is further elaborated on the basis of Embodiment 1. The other side end of the inlet pipe 2 is connected to the connection flange 4, and the connection flange 4 is uniformly provided with several threaded holes 5. The outer circular surface of the trachea 2 is arranged in a circular array with a number of reinforcing ribs 3 matching with the noise reduction housing 1. Through the setting of the connecting flange 4, the disassembly and assembly of the entire device is improved, which is convenient for later maintenance and disassembly; Moreover, by providing the rib plate 3, the rigidity of the intake pipe 2 is improved, which facilitates the cantilever installation of the noise reduction housing 1, and improves the stability of the entire device.

[0035] The working principle of Embodiment 1-2, when the present invention is used, the exhaust gas enters the air guide pipe 9 through the intake pipe 2, then enters the left side of the inner cavity of the nois...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an automobile engine noise reduction device. The automobile engine noise reduction device comprises a noise reduction shell, a gas inlet pipe and a gas outlet pipe, the left side end of the noise reduction shell is connected to the gas inlet pipe in a communicating mode, and the right side end of the noise reduction shell is connected to the gas outlet pipe in a communicating mode, and the noise reduction shell comprises a shell body, a soundproof layer, a sound absorbing layer, a temperature insulation layer, a high temperature resistance layer; and a first buffer plate and a second buffer plate are arranged in an inner cavity of the noise reduction shell, a plurality of first through holes are evenly formed in the edge of the first buffer plate, a first seal sleeve is arranged on the outer circular face of the first buffer plate in a sleeving mode, a gas leading pipe matched with the gas inlet pipe is arranged in the middle of the left side end of the first buffer plate, a plurality of communicating holes are evenly formed in the right side of the outer circular face of the gas leading pipe, and a first spring is arranged on the outer circular face of thegas leading pipe in a sleeving mode. According to the automobile engine noise reduction device, the flow velocity of the exhaust gas is reduced by arranging the first buffer plate and the second buffer plate, and the collision noise between the exhaust gas and the noise reduction shell as well as between the exhaust gas and the first buffer plate and the second buffer plate is greatly reduced by being combined with the first spring and a second spring for the energy storage.

Description

technical field [0001] The invention relates to the technical field of engine noise reduction, in particular to an automobile engine noise reduction device. Background technique [0002] Automobiles, driven by power, non-track-bearing vehicles with 4 or more wheels, are mainly used for: carrying people and (or) goods; towing vehicles that carry people and (or) goods; special purposes. [0003] Sedan refers to a car used to carry people and their belongings, and the seats are arranged between the two axles. Including the driver, the number of seats does not exceed nine. [0004] The general car emphasizes comfort and takes the occupant as the center. Moreover, starting from economic considerations, an engine with moderate horsepower, small displacement, and low fuel consumption is selected. In terms of driving license management in mainland China, cars refer to small cars that are different from trucks, pickups, SUVs, buses, and minibuses, commonly known as "small cars." ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F01N1/10F01N1/20F01N13/14
Inventor 吴从兵张刚方杰程军辉卢承领陈晓飞
Owner WEST ANHUI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products