CN203847785U - Control valve, motor vehicle exhaust system comprising control valve, and motor vehicle - Google Patents

Abstract

The utility model provides a control valve, a motor vehicle exhaust system comprising the control valve, and a motor vehicle. The control valve (1) comprises a tubular member (10), a support (20), a valve plate (30), a shaft (40), and an elastic element (50); the support (20) is disposed at one end opening of the tubular member (10); the shaft (40) is disposed on the support (20); the valve plate (30) is disposed on the support (20) in such a manner that the valve plate (30) pivots around the shaft (40), so that the valve plate (30) can rotate between an opening position which is opened by the tubular member (10) and a closure position where the tubular member (10) closes; the elastic element (50) applies force, towards the closure position, to the valve plate (30). The control valve has few parts and is simple in structure, low in cost, easy to manufacture and mount, low in operating noise and high in reliability.

Description

Control valve, comprise vent systems and the motor vehicle of the motor vehicle of control valve

Technical field

The utility model relates to a kind of control valve of the vent systems for motor vehicle, more specifically, relates in the vent systems that is arranged on motor vehicle to control the control valve of back pressure.The utility model also relates to a kind of vent systems of the motor vehicle that comprise this control valve and relevant motor vehicle.

Background technique

Exhaust sound is one of main source of motor vehicle noise, and reducing exhaust sound is the main path that reduces vehicle noise.When the motor (petrol engine or diesel engine) of motor vehicle is worked, can be because the outlet pipe existing in vent systems, silencing apparatus, exhaust gas filter etc. produce certain back pressure, this back pressure changes with the rotation speed change of motor conventionally.Back pressure has a direct impact for aspects such as the noise of vehicle, the power of motor and moments of torsion, on the one hand, when engine speed is high, back pressure is larger, the noise producing in vent systems is less, and acoustic efficiency is fine, but because back pressure itself can consume certain power, so the power of motor and moment of torsion can be affected, and and then affect fuel efficiency; On the other hand, when engine speed is low, hour situation is contrary for back pressure, the noise of the generation in vent systems is very large, and acoustic efficiency is poor, but the power of motor and moment of torsion are influenced less, and fuel efficiency is high.In common vehicle exhaust system, above either way likely generation.

In order to address this problem, the back pressure in vent systems is controlled to suitable degree, thereby improves acoustic efficiency and Engine torque, in prior art, provide some control valves for vent systems, as ACTIVE CONTROL valve.

ACTIVE CONTROL valve is controlled by driver, thereby according to driver's wish, change the back pressure in vent systems, but this control cannot regulate back pressure in real time, and ACTIVE CONTROL valve relates to complicated electromechanical components, the cost of Design and manufacture is high, and reliability is lower.

During the purpose of this utility model is to overcome the above problems one of at least, by utilizing control valve, from engine speed, be zero to engine speed in high whole speed range, acoustic efficiency and engine performance, finding an equinoctial point, stably keep the back pressure in vent systems, make exhaust sound little, the performance that simultaneously also will take into account motor is not affected substantially.

Model utility content

By being provided, a kind of control valve of the vent systems for motor vehicle realized above object.Control valve comprises: tubular part; Support, support is arranged on one end opening of tubular part; Axle, axle is arranged on support; Valve block, valve block is arranged on support in the mode around axle pivotable, thereby can rotate at the open position that tubular part is opened and between by the operating position of tubular part sealing; Elastic element, elastic element applies the power towards operating position to valve block.

According to control valve of the present utility model, be a kind of passive type pressure controlled valve, it regulates the back pressure in vent systems adaptively without driver's ACTIVE CONTROL.

By utilizing integrated tubular part, this control valve can be arranged on any existing exhaust duct, and do not relate to, exhaust duct is not carried out to any additional designs, thereby improved the flexibility ratio of design and reduced manufacture cost.

In control valve, adopt tubular part to coordinate with valve block, and do not adopted the valve seat of other shape.Advantage is, tubular part is commercially available standard piece, can buy with cheap price, and the valve seat with special shape design need to carry out separately Design and manufacture, for example, by stamped valve seat in the situation that, need to carry out die sinking, and die sinking cost is relatively costly.Therefore, reduced Design and manufacture cost.

Alternatively, when valve block is during in closed state, elastic element is subject to precharge so that valve block is pressed on tubular part.

Alternatively, support welding is on tubular part.

By support and tubular part are welded together, and the support situation integrally manufactured with valve seat compared, can further reduce costs.

Alternatively, to be both sides band bossed tabular for support.

By being that both sides band is bossed tabular by support Design, can reduce and simplify the shape of support, thereby reduce manufacture cost.

Alternatively, axle is welded on support.

By by axle together with support welding, stop the play of axle and the rotation of self, can prevent the friction of axle and support and the wearing and tearing that cause thus, and prevent from reliably causing because of coming off of axle the inefficacy of device.

Alternatively, elastic element is the spring by stent support.Spring is single torsion spring, torsion spring or special-shaped torsion spring, and reverses around axle.

This control valve has utilized the characteristic around the torsion spring of axle pivotable, when the motor slow-speed of revolution, can make noise controlled, increases back pressure, when high rotating speed, can open rapidly, reduces the pressure in pipeline, discharges engine performance.

Alternatively, the hole coordinating with axle of valve block has flange.

By flange is set, can extend the length of thread engagement between valve block and axle, thereby make connection more firm, reduce vibration.

Alternatively, between valve block and axle, be provided with shoe between valve block and support.Shoe can be the Steel Wool lining of being made by stainless steel steel wire.Steel Wool lining can comprise the cylindrical body portion being engaged between valve block and axle, and is resisted against the flange between support and valve block.

By between valve block and axle, shoe is set between valve block and support, reduced the excessive wear between these metal partss, and reduced noise.Wherein, Steel Wool lining has good abrasionproof effect.

Alternatively, between support and valve block, be provided with beam, beam is attached on the opposed facing surface of support and/or valve block.Beam can be made by stainless steel Steel Wool.Beam is for example rectangular.

By on the surface of facing mutually at support and valve block, beam being set, thereby can cushion the shock between valve block and exhaust duct.And therefore, the flake shape that valve block can be simply, easily process, and need between valve block and exhaust duct, not design complicated contact interface (as special valve block bearing) and damping device.Steel Wool is the good material of manufacturing beam.Square by beam is designed to, thus compare with beams of matching with pipe outlet of shape such as being designed to circle or annular, can greatly save cost.

Alternatively, the outward edge of valve block has flange.

By the edge at valve block, flange is set, can improves the mode of valve block, avoid producing resonance at engine working process middle valve plate.

Considerably less according to the number of spare parts of control valve of the present utility model, simple in structure, and therefore brought with low cost, be easy to the advantages such as processing and installation.In addition, control valve stable performance of the present utility model can keep longer working life in rugged environment, and reliability is high.

A kind of vent systems of motor vehicle is also provided, and it comprises control valve as above.

Alternatively, the pipeline in the free end of the tubular part of control valve and the baffler of vent systems is connected.The free end of the tubular part of control valve can be connected with pipeline after enlarging, reducing or distortion.

By the free end of the tubular part of control valve is carried out to enlarging, reducing or distortion, can will according to control valve of the present utility model, be applicable to the exhaust duct of various different sizes and shape, and not need exhaust duct itself to carry out any processing.

Alternatively, pipeline is exhaust entrance pipeline, intermediate conduit or the by-pass line in baffler.

Can will be used for any suitable conduit of baffler according to control valve of the present utility model as required.

A kind of motor vehicle of vent systems as mentioned above that comprise are also provided.

Accompanying drawing explanation

Hereinafter with reference to accompanying drawing, mode of execution of the present utility model is only described by way of example, in the accompanying drawings:

Fig. 1 shows according to the stereogram of the control valve of the utility model one mode of execution;

Fig. 2 shows another stereogram of this control valve;

Fig. 3 shows the stereogram of the support of this control valve;

Fig. 4 shows the stereogram of the valve block of this control valve;

Fig. 5 shows the stereogram of the lining of this control valve;

Fig. 6 shows valve block sectional drawing in the close position;

Fig. 7 shows valve block sectional drawing in an open position, and wherein arrow shows airflow direction;

Fig. 8 and Fig. 9 are schematic diagram, show according to control valve of the present utility model and are used in the example in the baffler in vent systems, and wherein arrow shows airflow direction.

Embodiment

Referring to Fig. 1 and Fig. 2, it shows according to the stereogram of the control valve of the utility model mode of execution.Wherein with reference character 1, generally show control valve, it comprises tubular part 10, support 20, valve block 30, axle 40, spring 50, lining 60 and the beam 70 of both ends open.The structure of each parts of control valve 1 will be specifically described below.

According to the tubular part 10 of the utility model mode of execution, there is circular cross-section, should be appreciated that tubular part 10 also can have rectangle or other shape such as square.In the present embodiment, support 20 is by welding the edge that is firmly-fixed to tubular part 10, yet support also can otherwise be fixed to the end of tubular part 10 or be combined with tubular part 10 one.Referring to Fig. 3, support 20 is " U " shape in plan view, has substrate 22 and two projections 24, that is, it is bossed tabular that support 20 is both sides band.The direction of substrate is parallel to the plane at the edge of opening place of tubular part, and two projections 24 are approximately perpendicular to substrate 22 extensions in a side contrary with tubular part place side from the two ends of substrate 22.The lower end of substrate 22 has and the end of the tubular part at place complementary shape mutually, thereby does not cover the opening of tubular part.The upper end of substrate 22 has for accepting the groove 23 of one end of spring 50.Two projections 24 have respectively hole 25, for axle 40 25 is passed from hole.

Referring to Fig. 4, valve block 30 is fixed to support 20 by axle 40 in rotating mode.Valve block 30 is the sheet with lug generally, that is, two projections 34 that have sheet baffle plate 32 and stretch out from the both upper ends thereof of baffle plate 32, stretch out direction back to a side at tubular part place, and be approximately perpendicular to baffle plate 32.The bottom of baffle plate 32 has the shape corresponding with the shape of tubular part, thereby can cover the opening of tubular part completely.The upper end of baffle plate 32 has groove 33, for one end of spring 50 is passed, to avoid spring 50 and baffle plate 32 to interfere.Distance between two projections 34 is less than the distance between two projections 24 of support 20.In projection 34, form respectively porose 35, for axle 40 35 is passed from hole.In Fig. 4, can see, in the edge of valve block 30,---comprise the outward edge of baffle plate 32 and the inward flange in hole 35---and there is flange, to improve the mode of valve block 30, avoid producing resonance at engine working process middle valve plate 30.In hole, the flange of 35 inside edge forms the flange 36 extending along the direction of axle 40.In assembled state, the position of groove 33 is corresponding with the position of the groove 23 of support 20, and the position in the hole 25 of the position support 20 in hole 35 is corresponding.

Referring to Fig. 2, axle 40 is through the hole 25 of support 20 and the hole 35 of valve block 30 and be fixed to support 20.Particularly, the first end 42 of axle 40 has flange, the diameter of flange is greater than the diameter in the hole 25 of support 20, thereby flange can be resisted against on the outer surface of projection 24 of support 20, and the second end 44 of axle 40 is firmly-fixed to the opposite side projection 24 of support 20 by modes such as welding, to stop the play of axle 40 and the rotation of self.By around these axle 40 pivotables, valve block 30 can rotate at the open position that tubular part 10 is opened and between by the operating position of tubular part 10 sealings.

Continuation, referring to Fig. 1 and Fig. 2, is provided with elastic element between support 20 and valve block 30, and for example spring 50.Spring 50 is for example the torque spring being enclosed within on axle 50.The first end 52 of spring 50 passes the groove 23 of support 20 and the groove 33 of valve block 30, thereby is supported by support 20; The second end 54 is resisted against on baffle plate 32, thereby applies the power towards closed position bias to valve block 30.The second end 54 and the projection 35 of spring 50 is positioned at the same side of baffle plate 32.Spring 50 is operated under hot environment, therefore should select high temperature resistant spring, as take nickel-base material as main spring.In addition, although the spring shown in figure is single torsion spring, spring 50 can be also torsion spring or other special-shaped torsion spring, and the position of the groove 33 on the groove on support 20 23 and valve block 30 should correspondingly arrange in this case.Be to be understood that, elastic element is not limited to the torque spring in present embodiment, but can adopt those skilled in the art thinkable any suitable elastic element apply the power towards closed position bias by valve block 30, and can adopt any suitable arrangement.

When valve block 30 is in the close position, the obtuse angle forming between the first end 52 of spring 50 and the second end 54 is greater than the angle in lower the two formation of nature (unassembled state) of spring 50, in other words, now spring 50 is subject to precharge (reversing), thereby valve block 30 is pressed on tubular part 10, guarantees the outlet air tight (referring to Fig. 6) of tubular part 10.

Referring to Fig. 7, when valve block 30 is opened, the second end of spring 54 is with valve block 30 motion, the restoring force that spring 50 provides all the time by valve block 30 towards its closed position bias.Particularly, the opening degree of valve block 30 is larger, and the angle between the first end 52 of spring 50 and the second end 54 will be larger, and the restoring force of spring 50 is larger.

Alternatively, between two holes 35 of valve block 30 and axle 40, be respectively arranged with shoe, lining 60 (referring to Fig. 5) for example, the Steel Wool lining that the stainless steel steel wire that this lining is is 0.15mm by for example diameter is made, also can be made by other suitable material.The main part of lining 60 is snugly assemblied in the hole 35 (in other words, flange 36) of valve block 30, and has for holding the center hole of axle 40.When valve block 30 upset, lining 60 will rotate around axle 40 with valve block 30.Lining 60 can be formed with flange 62 in the side near support 20, for the inner side against projection 24, thereby in the axial direction lining 60 and valve block 30 is positioned.A side contrary with flange 62 at lining 60 can have chamfer shape, so that be assembled in the hole 35 of valve block 30.Due to the existence of lining 60 or other shoe, can avoid contacting of valve block 30 and axle 40, support 20, prevent the excessive wear of valve block 30 and axle 40, also avoided fricative noise between these metalworks simultaneously.Should be appreciated that this shoe is not limited to Steel Wool lining 60, but can be any fire resistant wear prevention device that those skilled in the art can be susceptible to, as bearing etc.

Alternatively, on the surface of facing mutually at support 20 and valve block 30, be provided with beam 70.This beam 70 is for example made by stainless steel Steel Wool, can be attached on support 20 and/or on valve block 30, for example, by spot welding, fix.Obviously support 20 and/or 30 be made and be otherwise fixed to this beam 70 also can by other suitable material.Beam 70 can be for example rectangular.Beam 70 is slightly larger than the gap between support 20 and valve block 30 at the thickness by compression time not, is therefore compressible.When valve block 30 turns to operating position by open position, valve block 30 can first touch beam 70 in contact before tubular part 10, thereby has avoided valve block 30 to clash into the noise of generations with tubular part 10 when closure.

Fig. 8 and Fig. 9 are schematic diagram, show according to control valve 1 of the present utility model and be used in the example in the baffler 2 in the vent systems of motor vehicle, but this is only schematic, should be appreciated that according to the conduit component 10 of control valve of the present utility model and can be connected with the end of arbitrary suitable pipeline in the vent systems of motor vehicle.

As shown in the figure, there are a plurality of chambeies that separated by dividing plate in the silencing apparatus inside of motor vehicle, for making flow expansion, exhaust entrance pipeline 3 is incorporated into exhaust in the chamber of baffler, and in baffler, have and make the intermediate conduit that is connected between each chamber, and there is alternatively by-pass line.In the baffler schematic diagram shown in Fig. 8, control valve 1 is arranged on the end of exhaust entrance pipeline 3.Similar in the baffler schematic diagram shown in Fig. 9, control valve 1 is arranged on the end of intermediate conduit 4.Although thinner by-pass line 5 has been shown in Fig. 9, should be appreciated that these figure may not draw in proportion, and control valve 1 also can be arranged on the end of by-pass line.The free end of conduit component 10 can be connected directly to the end of these pipelines, also can after enlarging, reducing or distortion, be connected to pipe end.

To the working principle of control valve 1 be described below.The situation of take in Fig. 8 is example, and control valve 1 is arranged on exhaust entrance pipeline 3.When engine speed improves, the air-flow in exhaust entrance pipeline 3 becomes greatly gradually, and stream pressure becomes and is greater than the impacting force that spring 50 produces, and valve block 30 is opened pressure release (referring to Fig. 7).Along with the open angle change of valve block 30 is large, the windup-degree of spring 50 also becomes greatly, will produce larger restoring force, and now the maximum, force of spring 50 will depend on the size of the pressure that in tubular part, air-flow produces.When tubular part 10 internal gas flows diminish, valve block 30 is got back to operating position under the effect of spring 50.

For the situation in Fig. 9, control valve 1 is arranged in intermediate conduit 4, and when the motor slow-speed of revolution, air-flow flows out by by-pass line 5, and 30 of valve blocks are stressed less, is not enough to offset the impacting force that spring 50 produces, therefore in closed condition; When rotating speed raises, air-flow has little time to flow out from bypass tube, and the stressed change of valve block 30 is large, and when the pressure of air-flow generation is greater than the power of spring 30 generations, valve block 30 is open, and air-flow flows out by intermediate conduit, reaches the effect of pressure release.

Visible, this control valve 1 obtains the backpressure regulation effect of expectation generally by the rigidity of design spring 50.In the four corner of engine speed, the closure of valve block 30 and opening degree change passively according to the size of tubular part 10 interior air-flows, thereby back pressure and noise that can regulating system, taken into account motor has excellent acoustic efficiency and engine performance effect under the less slow-speed of revolution of air-flow and the larger high rotating speed of air-flow.

Below introduce the example fabrication method according to control valve of the present utility model.First beam 70 is arrived to support 20 (or valve block 30) by assemble welding upper, then support 20 is arrived to the end of tubular part 10 by assemble welding.Lining 60 is tucked in the hole 35 of valve block 30, the first end of spring 50 52 is put in the corresponding groove 23 and 33 of support 20 and valve block 30, opposite side 54 is against valve block 30.The second end 44 of axle 40, successively through the hole 25 of hole 25, a side lining 60, spring 50, opposite side lining 60 and support 20 opposite sides of a side of support 20, and is soldered to support 20 by the second end 44.It will be appreciated by those skilled in the art that and can adjust according to specific needs order, the deletion of above step or increase manufacturing step.

Below be only illustrative embodiments of the present utility model, by reference to the accompanying drawings and after specification, those skilled in the art can easily make multiple transformation to the utility model, and all these transformations all fall in the scope of claims.

Claims (20)

1. the control valve for the vent systems of motor vehicle (1), described control valve (1) is characterised in that and comprises:

Tubular part (10);

Support (20), described support (20) is arranged on one end opening of described tubular part (10);

Axle (40), described axle (40) is arranged on described support (20);

Valve block (30), it is upper that described valve block (30) is arranged on described support (20) in the mode around described axle (40) pivotable, thereby can rotate at the open position that described tubular part (10) is opened and between by the operating position of described tubular part (10) sealing;

Elastic element (50), described elastic element (50) applies the power towards described operating position to described valve block (30).

2. control valve as claimed in claim 1 (1), it is characterized in that, when described valve block (30) is during in described closed state, described elastic element (50) is subject to precharge so that described valve block (30) is pressed on described tubular part (10).

3. control valve as claimed in claim 1 (1), is characterized in that, described support (20) is welded on described tubular part (10).

4. control valve as claimed in claim 1 (1), is characterized in that, it is bossed tabular that described support (20) is both sides band.

5. control valve as claimed in claim 1 (1), is characterized in that, described axle (40) is welded on described support (20).

6. control valve as claimed in claim 1 (1), is characterized in that, described elastic element (50) is the spring (50) being supported by described support (20).

7. control valve as claimed in claim 6 (1), is characterized in that, described spring (50) is single torsion spring, torsion spring or special-shaped torsion spring, and reverses around described axle (40).

8. control valve as claimed in claim 1 (1), is characterized in that, the hole (35) coordinating with described axle (40) of described valve block (30) has flange (36).

9. the control valve as described in any one in claim 1 to 8 (1), it is characterized in that, between described valve block (30) and described axle (40), be provided with shoe (60) between described valve block (30) and described support (20).

10. control valve as claimed in claim 9 (1), is characterized in that, described shoe (60) is the Steel Wool lining (60) of being made by stainless steel steel wire.

11. control valves as claimed in claim 10 (1), it is characterized in that, described Steel Wool lining (60) comprises the cylindrical body portion being engaged between described valve block (30) and described axle (40), and is resisted against the flange between described support (20) and described valve block (30).

12. the control valve as described in any one in claim 1 to 8 (1), is characterized in that, is provided with beam between described support and described valve block, described beam is attached on the opposed facing surface of described support and/or described valve block.

13. control valves as claimed in claim 12 (1), is characterized in that, described beam is made by stainless steel Steel Wool.

14. control valves as claimed in claim 12 (1), is characterized in that, described beam is rectangular.

15. control valves (1) as described in any one in claim 1 to 8, is characterized in that, the outward edge of described valve block has flange.

The vent systems of 16. 1 kinds of motor vehicle, is characterized in that, comprises the control valve (1) as described in any one in claim 1 to 15.

The vent systems of 17. motor vehicle as claimed in claim 16, is characterized in that, the free end of tubular part of described control valve (1) and the pipeline in the baffler of described vent systems are connected.

The vent systems of 18. motor vehicle as claimed in claim 17, is characterized in that, the free end of the tubular part of described control valve is connected with described pipeline after enlarging, reducing or distortion.

The vent systems of 19. motor vehicle as described in claim 17 or 18, is characterized in that, described pipeline is exhaust entrance pipeline, intermediate conduit or the by-pass line in baffler.

20. 1 kinds of motor vehicle, is characterized in that, comprise the vent systems of the motor vehicle as described in any one in claim 16 to 19.