CN106907225B

CN106907225B - Muffler ASSY

Info

Publication number: CN106907225B
Application number: CN201710227089.9A
Authority: CN
Inventors: 吴孟兵
Original assignee: Anhui Jianghuai Automobile Group Corp
Current assignee: Anhui Jianghuai Automobile Group Corp
Priority date: 2017-04-07
Filing date: 2017-04-07
Publication date: 2018-06-01
Anticipated expiration: 2037-04-07
Also published as: CN106907225A

Abstract

The invention discloses a kind of muffler ASSY, the air outlet pipe including silencer and in silencer has gap between the end of the air outlet pipe and the end cap of silencer, the end cap is equipped with gas outlet, further includes exhaust backpressure valve, the exhaust backpressure valve includes：Valve is sealed on the end of the air outlet pipe, revoliving arm is fixed in the outer end of the valve, one end of the revoliving arm is the swivel point hinged with outlet tube end, and the other end of the revoliving arm is the external part stretched out to the one side away from valve；Pull rod, one end of the pull rod and the external part be rotatablely connected and with valve on the swivel point into lever mechanism, the other end of the pull rod by elastic device freely through being fixed on outside the end cap after the end cap.This programme adds exhaust backpressure valve by the port in air outlet pipe, effectively reduces exhaust idling and low speed tail pipe noise.

Description

Muffler ASSY

Technical field

Exhaust gas processing device technical field more particularly to a kind of muffler ASSY the present invention relates to vehicle.

Background technology

With the promotion of living standard, automobile has become a kind of popular consumer goods, and requirement of the people to automobile is also more next It is higher, particularly in addition to dynamic property, economy, cost performance etc. pay close attention to more performance indicator, vehicle vibrations, noise are also carried More requirements are gone out, the noise of vehicle is eliminated to be realized by silencer.

The Chinese patent of Publication No. CN2871858 discloses a kind of silencer, by cylinder, partition plate, air inlet pipe, air outlet pipe And forward and backward end cap composition, it is characterised in that：Partition plate has three pieces, separates the cylinder into four chambers, and air inlet pipe is stretched from cylinder one end Into, to stop through first, second to the 3rd chamber, air outlet pipe then begins to pass second and third from first chamber, picks out after four chambers, A certain number of micropores are all provided in air inlet pipe, air outlet pipe and on partition plate, first, second, third chamber is made to form resonant cavity, and Sound absorption cotton is filled up in 4th chamber, forms anechoic room.Gas enters from air inlet pipe, by air inlet pipe, air outlet pipe and partition plate Micropore flows between chambers, discharges from air inlet pipe, is eliminated the noise with this afterwards.

But when engine speed rise or capacity increase, the particular/special requirement of output power and venting quality need to be met, Need to increase air-flow by area, and in the silencer, air-flow by area it is constant always, reduce noise elimination effect as a result,.

The content of the invention

The present invention provides a kind of muffler ASSY, to solve air-flow in the silencer of the prior art by area always It is constant, the problem of noise elimination effect is poor when capacity increase.

The present invention provides a kind of muffler ASSY to achieve these goals, including silencer and in silencer Air outlet pipe, has gap between the end of the air outlet pipe and the end cap of silencer, the end cap is equipped with gas outlet, the row of further including Gas counterbalance valve, the exhaust backpressure valve include：Valve is sealed on the end of the air outlet pipe, consolidates in the outer end of the valve Surely have a revoliving arm, one end of the revoliving arm is the swivel point hinged with outlet tube end, the other end of the revoliving arm be to The external part that one side away from valve is stretched out；Pull rod, one end of the pull rod are rotatablely connected with the external part and are closed with valve In the swivel point into lever mechanism, the other end of the pull rod by elastic device freely through being fixed on after the end cap Outside the end cap.

Preferably, the elastic device includes spring and catch, and the catch is mounted on the end of the pull rod, the bullet What spring pre-tightened is mounted between the catch and the end cap.

Preferably, what the pull rod was horizontal passes through the end cap.

Preferably, the revoliving arm includes first support arm and second support arm, and the first support arm exists with the second support arm The circumferentially-spaced setting of the valve and coplanar with the valve.

Preferably, the first support arm and the second support arm are mutually parallel.

Preferably, the end cross of the air outlet pipe is fixed with axle sleeve, and the axle sleeve is located at the first support arm and institute It states between second support arm and passes through the first fixing axle and be rotatedly connected with the swivel point；The end cross of the pull rod is fixed with pin Set, the guide are rotatedly connected by the second fixing axle and the end of two support arms.

Preferably, the adjust pad on the pull rod is further included, the adjust pad is located at the spring and institute It states between catch.

Preferably, the valve towards the one side of the air outlet pipe be pyramidal structure.

Effect of the invention is that：This programme adds exhaust backpressure valve by the port in air outlet pipe, effectively reduces exhaust Idling and low speed tail pipe noise reduce high speed exhaust back pressure, for promoting vehicle ride comfort and complete-vehicle oil consumption and economy There is apparent effect, while part reliability is good, it is at low cost.

Description of the drawings

It in order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to institute in embodiment Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only one described in the present invention A little embodiments for those of ordinary skill in the art, can also be obtained according to these attached drawings other attached drawings.

Fig. 1 is the structure diagram of muffler ASSY in the embodiment of the present invention.

Fig. 2 is the scheme of installation of exhaust backpressure valve.

Fig. 3 is the explosive view of exhaust backpressure valve.

In figure of the present invention：1- muffler ASSY 2- air outlet pipe 3- end cap 4- exhaust backpressure valve 41- valve 42- pull rods 43- spring 44- catch 45- first support arm 46- second support arms 47- the first fixing axle the second fixing axles of 48- 49- is adjusted Gasket

Specific embodiment

In order to which those skilled in the art is made to more fully understand technical scheme, below in conjunction with attached drawing to this hair It is bright to be further detailed.

It is a kind of muffler ASSY provided in an embodiment of the present invention, including silencer 1 and installation with reference to shown in Fig. 1 to Fig. 3 Air outlet pipe 2 in silencer 1 has gap between the end of air outlet pipe 2 and the end cap 3 of silencer, end cap is equipped with gas outlet, Exhaust backpressure valve is further included, exhaust backpressure valve includes：

Valve 41 is sealed on the end of air outlet pipe 2, and revoliving arm, one end of revoliving arm are fixed in the outer end of valve 41 For the swivel point hinged with 2 end of air outlet pipe, the other end of revoliving arm is stretched out to the one side away from valve 41, with 42 structure of pull rod Into lever mechanism.

One end of pull rod 42 and the end of revoliving arm are rotatablely connected, and with valve 41 on swivel point into lever mechanism, draw The other end of bar 42 is fixed on by elastic device outside end cap 3 after freely passing through end cap, to realize that the external of valve opening is controlled System.

When air-flow velocity is relatively low, the elastic force of elastic device is acted on by pull rod on 41, valve, and valve 41 is closed, gas Stream is by other paths by the way that extending air-flow trend reduces noise, and when air-flow velocity is higher, airflow thrust acts on valve On door 41, elastic force is offset, valve is opened, and air-flow is directly by valve 41, and path reduces, and gas-flow resistance reduces, and ensure that and starts The discharge of machine exhaust gas ensure that the oil consumption of vehicle.This programme adds exhaust backpressure valve by the port in air outlet pipe, effectively reduces It is vented idling and low speed tail pipe noise, reduces high speed exhaust back pressure, the real-time adjustment of area when realizing outlet, for promoting vehicle Ride comfort and complete-vehicle oil consumption and economy have apparent effect, while part reliability is good, at low cost.

The end for acting as promoting revoliving arm of elastic device is subject to elastic force to act at the beginning, can by lever mechanism Know, elastic device is applied to the driving force of pull rod 42 always with the active force of valve 41 on the contrary, so that when initial, due to going out Airless in tracheae 2, therefore valve 41 is closed with air outlet pipe 2 and keeps；As shown in figure 3, elastic device can be bullet in this programme Spring 43 and catch 44, catch 44 are mounted on the end of the pull rod, and spring pre-tightening is mounted between catch 44 and end cap 3, and is led to Crossing catch gives spring 43 1 outside power, at this point, valve 41 is subject to inside counter-force.Certainly, elastic device can also be used The forms such as cylinder.

In the present solution, in order to ensure the elastic force of spring and the direction of motion of pull rod are consistent, in preferably scheme, pull rod 42 Horizontal passes through the end cap 3.

In addition, shown in Figure 3, revoliving arm further comprises first support arm 45 and second support arm 46 in the present embodiment, First support arm 45 and second support arm 46 are in the circumferentially-spaced setting of valve 41 and coplanar with valve 41, so that revoliving arm and valve There is larger active area, so as to improve Drive the result of the revoliving arm to valve between door 41.In addition, first support arm 45 and second Support arm 46 is mutually parallel, so as to facilitate its cooperation with pull rod.

Wherein, the end cross of air outlet pipe 2 is fixed with axle sleeve, and axle sleeve is located at the first support arm 45 and second described Between arm 46 and pass through the first fixing axle 47 and be rotatedly connected with the swivel point；The end cross of pull rod 42 is fixed with guide, pin Set is rotatedly connected by the second fixing axle 48 and the end of two support arms.

In addition, for convenience valve closing and ensure that sealing effect is reliable during its closing, in the present solution, 41 court of valve It is pyramidal structure to the one side of air outlet pipe.Certainly, can also on pull rod mounting and adjusting gasket 49, to adjust the pretightning force of spring, Wherein, on pull rod 42 of the adjust pad 49 between the spring 43 and catch 44.

Above some exemplary embodiments that the present invention is only described by way of explanation, undoubtedly, for ability The those of ordinary skill in domain, without departing from the spirit and scope of the present invention, can be with a variety of modes to institute The embodiment of description is modified.Therefore, above-mentioned attached drawing and description are regarded as illustrative in nature, and should not be construed as to the present invention The limitation of claims.

Claims

1. a kind of muffler ASSY, the air outlet pipe including silencer and in silencer, which is characterized in that the air outlet pipe End and silencer end cap between have gap, the end cap be equipped with gas outlet, further include exhaust backpressure valve, the exhaust Counterbalance valve includes：

Valve is sealed on the end of the air outlet pipe, is fixed with revoliving arm in the outer end of the valve, and the one of the revoliving arm It holds as the swivel point hinged with outlet tube end, the other end of the revoliving arm is the stretching stretched out to the one side away from valve End；

Pull rod, one end of the pull rod and the external part be rotatablely connected and with valve on the swivel point into lever mechanism, The other end of the pull rod is fixed on by elastic device outside the end cap after freely passing through the end cap；

The elastic device includes spring and catch, and the catch is mounted on the end of the pull rod, the peace of the spring pre-tightening Between the catch and the end cap.

2. muffler ASSY as described in claim 1, which is characterized in that the pull rod level passes through the end cap.

3. muffler ASSY as claimed in claim 1 or 2, which is characterized in that the revoliving arm includes first support arm and second Support arm, the first support arm and the second support arm are in the circumferentially-spaced setting of the valve and coplanar with the valve.

4. muffler ASSY as claimed in claim 3, which is characterized in that the first support arm and the second support arm are mutually flat Row.

5. muffler ASSY as claimed in claim 4, which is characterized in that the end cross of the air outlet pipe is fixed with axis Set, the axle sleeve positioned at the first support arm and the second support arm between and pass through the first fixing axle and the swivel point rotation phase Even；The end cross of the pull rod is fixed with guide, and the guide rotates phase by the second fixing axle and the end of two support arms Even.

6. muffler ASSY as described in claim 1, which is characterized in that further include the adjusting pad on the pull rod Piece, the adjust pad is between the spring and the catch.

7. muffler ASSY as described in claim 1, which is characterized in that the valve is to bore towards the one side of the air outlet pipe Shape structure.