CN108979791A

CN108979791A - A kind of silencing means of automobile engine

Info

Publication number: CN108979791A
Application number: CN201810601266.XA
Authority: CN
Inventors: 佘峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-06-08
Filing date: 2016-06-08
Publication date: 2018-12-11
Also published as: CN105863783A; CN105863783B

Abstract

The invention discloses a kind of silencing means of automobile engine, including outer housing, air inlet pipe is installed in the middle part of the outer housing left end, the right end of outer housing is equipped with exhaust pipe, the inside of the outer housing is equipped with cylindric inner housing, vacuum chamber is formd between the lateral surface of the inner housing and the medial surface of outer housing, the medial surface of inner housing is evenly distributed with hemispheric noise reduction salient point, vertically arranged circular bulkheads are installed in the middle part of inner housing, distances are surrounded with the first tap hole on circular bulkheads etc., the middle part of the circular bulkheads left side and the right end of air inlet pipe connect.The silencing means of the automobile engine, the second tap hole is arranged in the air inlet pipe connecting with engine exhaust port to shunt gas, it allows gas to enough uniformly be distributed in hush pipe, water conservancy diversion diverging is carried out to gas using the first bloop equally distributed on hush pipe, gas institute band energy is set to cancel out each other, to achieve the purpose that noise reduction.

Description

A kind of silencing means of automobile engine

Technical field

The present invention relates to technical field of engines, specially a kind of silencing means of automobile engine.

Background technique

Automobile engine is that the engine of power is provided for automobile, is the heart of automobile, influences dynamic property, the economy of automobile Property and the feature of environmental protection.According to power resources difference, automobile engine can be divided into diesel engine, petrol engine, electric car electricity Motivation and hybrid power, engine are exactly an energy transfer mechanism, i.e., by gasoline (diesel oil) or the thermal energy of natural gas, pass through In sealing combustor inner cylinder gas expansion, piston acting is pushed, is changed into mechanical energy, this is the most basic principle of engine.Hair The exhaust ports of motivation generally require installation silencing means, but traditional silencing means design is not reasonable, and erasure effect is inadequate Obviously.

Summary of the invention

The purpose of the present invention is to provide a kind of silencing means of automobile engine, to solve to propose in above-mentioned background technique The problem of.

To achieve the above object, the invention provides the following technical scheme: a kind of silencing means of automobile engine, including it is outer Shell is equipped with air inlet pipe in the middle part of the outer housing left end, and the right end of outer housing is equipped with exhaust pipe, the inside of the outer housing Cylindric inner housing is installed, vacuum chamber, inner housing are formd between the lateral surface of the inner housing and the medial surface of outer housing Medial surface be evenly distributed with hemispheric noise reduction salient point, vertically arranged circular bulkheads are installed in the middle part of inner housing, it is round Distances are surrounded with the first tap hole on partition etc., and the middle part of the circular bulkheads left side and the right end of air inlet pipe connect, and And the second tap hole is evenly distributed in the air inlet pipe between circular bulkheads and outer housing, the left end inside the outer housing Hush pipe is installed between circular bulkheads, the first bloop, the right end inside the outer housing are evenly distributed on hush pipe It is provided with circular acoustical panel between circular bulkheads, the second bloop is offered on acoustical panel.

Preferably, the quantity of the acoustical panel is no less than three, and the acoustical panel is equidistantly distributed in outer enclosure interior Right end and circular bulkheads between.

Preferably, the air inlet pipe is located at the inside of hush pipe, and between air inlet pipe, hush pipe and inner housing there are Gap.

Preferably, first tap hole is located in the outside of hush pipe.

Compared with prior art, the beneficial effects of the present invention are: the silencing means of the automobile engine, is arranged with engine The second tap hole is arranged in the air inlet pipe of port connection to shunt gas, allows gas to enough uniformly be distributed to hush pipe It is interior, water conservancy diversion diverging is carried out to gas using the first bloop equally distributed on hush pipe, carries out gas institute band energy mutual It offsets, thus achieve the purpose that noise reduction, after the first tap hole shunting function of the gas after energy attenuating on circular bulkheads, benefit Gas institute band energy is weakened again with the acoustical panel being distributed layer by layer, noise reduction salient point can on inner housing in this course The sound of generation is reflected, sound can cancel out each other in the energy of reflection when institute band, achieve the purpose that noise reduction, erasure effect Preferably, the setting of vacuum chamber can be avoided gas and spread out of during noise reduction from outer housing, be dissipated in sound as far as possible interior In shell, erasure effect is further enhanced.

Detailed description of the invention

Fig. 1 is schematic diagram of internal structure of the present invention.

In figure: 1 exhaust pipe, 2 outer housings, 3 vacuum chambers, 4 first tap holes, 5 circular bulkheads, 6 hush pipes, 7 second shunt Hole, 8 air inlet pipe, 9 first bloops, 10 noise reduction salient points, 11 inner housings, 12 acoustical panels, 13 second bloops.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

Referring to Fig. 1, the present invention provides a kind of technical solution: a kind of silencing means of automobile engine, including outer housing 2, air inlet pipe 8 is installed in the middle part of 2 left end of outer housing, the right end of outer housing 2 is equipped with exhaust pipe 1, the inside peace of the outer housing 2 Equipped with cylindric inner housing 11, vacuum chamber 3 is formd between the lateral surface of the inner housing 11 and the medial surface of outer housing 2, very The setting of cavity 3 can be avoided gas and spread out of during noise reduction from outer housing 2, and sound is made to be dissipated in inner housing 11 as far as possible In, erasure effect is further enhanced, the medial surface of inner housing 11 is evenly distributed with hemispheric noise reduction salient point 10, inner housing 11 Middle part vertically arranged circular bulkheads 5 are installed, distances are surrounded with the first tap hole 4 on circular bulkheads 5 etc., first point Discharge orifice 4 is located in the outside of hush pipe 6, and the middle part of 5 left side of circular bulkheads is connect with the right end of air inlet pipe 8, and is located at The second tap hole 7, left end and circle inside outer housing 2 are evenly distributed in air inlet pipe 8 between circular bulkheads 5 and outer housing 2 Hush pipe 6 is installed between shape partition 5, the both ends of hush pipe 6 are fixed, avoids rushing because of gas during noise reduction The violent oscillatory motion of hush pipe 6 is hit and causes, high stability, design is relatively reasonable, and air inlet pipe 8 is located at the inside of hush pipe 6, And there are gap between air inlet pipe 8, hush pipe 6 and inner housing 11, enables air to the impact several times in gap and offset, disappear Audio fruit is preferable, and the first bloop 9 is evenly distributed on hush pipe 6, sets between the right end and circular bulkheads 5 inside outer housing 2 It is equipped with circular acoustical panel 12, the quantity of acoustical panel 12 is no less than three, and the acoustical panel 12 is equidistantly distributed in outer housing 2 Between internal right end and circular bulkheads 5, the second bloop 13 is offered on acoustical panel 12.

The second tap hole 7 is arranged in the air inlet pipe 8 connecting with engine exhaust port and shunts to gas by the present invention, makes Gas can be uniformly distributed in hush pipe 6, be led using the first bloop 4 equally distributed on hush pipe 6 to gas Stream diverging makes gas institute band energy cancel out each other, to achieve the purpose that noise reduction, the gas after energy attenuating circle every After the first tap hole shunting function on plate 5, gas institute band energy is weakened again using the acoustical panel 12 being distributed layer by layer, Noise reduction salient point can reflect the sound of generation on inner housing 11 in this course, energy of the sound in reflection when institute band It can cancel out each other, achieve the purpose that noise reduction, erasure effect is preferable, and gas after treatment is finally discharged by exhaust pipe 1, at this time Gas contained energy it is lower, when discharge, is more uniform, there's almost no noise.

It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims

1. a kind of silencing means of automobile engine, it is characterised in that: a kind of silencing means of automobile engine, including shell Body is equipped with air inlet pipe in the middle part of outer housing left end, and the right end of outer housing is equipped with exhaust pipe, and the inside of the outer housing is equipped with Cylindric inner housing, forms vacuum chamber, the setting of vacuum chamber between the lateral surface of the inner housing and the medial surface of outer housing It can be avoided gas to spread out of during noise reduction from outer housing, be dissipated in sound in inner housing as far as possible, further strengthen Erasure effect, the medial surface of inner housing are evenly distributed with hemispheric noise reduction salient point, are equipped in the middle part of inner housing and vertically set The circular bulkheads set, distances are surrounded with the first tap hole on circular bulkheads etc., and the first tap hole is located in the outer of hush pipe The right end of side, the middle part of the circular bulkheads left side and air inlet pipe connects, and between circular bulkheads and outer housing into It is evenly distributed with the second tap hole on tracheae, hush pipe is installed between the left end and circular bulkheads inside outer housing, by noise reduction The both ends of cylinder are fixed, and avoid the violent oscillatory motion that noise reduction causes hush pipe because of the impact of gas in the process, stablize Property it is higher, design it is relatively reasonable, air inlet pipe is located at the inside of hush pipe, and stays between air inlet pipe, hush pipe and inner housing There is gap, enables air to the impact several times in gap and offset, erasure effect is preferable, and the first noise reduction is evenly distributed on hush pipe Hole, is provided with circular acoustical panel between the right end and circular bulkheads inside outer housing, and the quantity of acoustical panel is no less than three, and And the acoustical panel equidistantly distributes between the right end and circular bulkheads of outer enclosure interior, and the second noise reduction is offered on acoustical panel Hole.

2. a kind of silencing means of automobile engine according to claim 1, it is characterised in that the present invention with engine The second tap hole 7 is arranged in the air inlet pipe of exhaust outlet connection to shunt gas, allows gas to enough uniformly be distributed to noise reduction In cylinder, water conservancy diversion diverging is carried out to gas using the first bloop equally distributed on hush pipe, gas institute band energy is made to carry out phase Mutually offset, thus achieve the purpose that noise reduction, after the first tap hole shunting function of the gas after energy attenuating on circular bulkheads, Gas institute band energy is weakened again using the acoustical panel being distributed layer by layer, in this course noise reduction salient point energy on inner housing Enough to reflect the sound of generation, sound can cancel out each other in the energy of reflection when institute band, achieve the purpose that noise reduction, noise reduction effect Fruit is preferable, and gas after treatment is finally discharged by exhaust pipe 1, and gas contained energy at this time is lower, and when discharge is more equal It is even, it there's almost no noise.