CN104487746B - There is the engine control valve improving operation - Google Patents

Abstract

The present invention relates to a kind of engine control valve, including defining the body of inner conduit and including being installed so that the lobe (10) that its axle (12) that can pass through lobe (10) pivots, described lobe (10) includes Part I (11).Lobe can be passed through the open position of conduit allowing fluid and pivot between the closed position that lobe (10) contacts with the sealing member (1) of lobe, and described sealing member (1) is securely connected to the body of lobe.The exterior contour of sealing member (1) is around the exterior contour of lobe (10), and described sealing member (1) includes opening (6) and solid section (3).When described lobe (1) in the closed position middle time, above-mentioned Part I (11) seals the opening (6) in sealing member (1).Lobe (10) includes and Part I (11) separate protuberance (18), described protuberance (18) is orientated as and is kept when lobe (10) pivots between open and closed positions contacting with the solid section (3) of sealing member (1), or vice versa as the same.

Description

There is the engine control valve improving operation

Technical field

The present invention relates to a kind of engine control valve having and improving operation.The valve of the type can such as assemble In the gas supply connection of vehicle combustion engine, to regulate EGR (exhaust gas recirculatioon) gas at ring Flow velocity in road so that can aspirate a part and leave the aerofluxus of electromotor, to start them described The upstream of machine refills.The operating principle controlled rotation based on lobe of the valve of the type, described lobe Can be mobile to closed position (being used for stopping that this passes through) from fully open position (being used for allowing fluid from). Subject of the present invention is a kind of engine control valve having and improving operation.

Background technology

Therefore engine control valve has lobe, and described lobe is pivotally arranged on rotating dog.Lobe Portion can include by the separate Part I of rotating dog and Part II.When described lobe is in the closed position Time middle, its gasket contacts with the body being fixed to valve, described liner is by with acting on described lobe Retaining tips stop part and seal described valve.More specifically, liner is the most smooth, and by its periphery Place is inserted between two cast elements of described body and is fastened in the body of valve.Liner has out Mouthful, and when lobe in the closed position middle time, in the Part I of lobe and the two of liner faces Contact, to close described opening, and the Part II of described lobe flushes with another face of described liner. Lobe has little thickness, and has substantially rectangular overall shape.

Firstly, since process relevant reason to it, liner only covers four periphery edges of described lobe In three, the 4th edge in lobe reserves passage for the gases, and the 4th edge is not by institute State liner to cover.Therefore, when lobe is in the closed position of liner, described passage may profit Accidental release in gas.This most general sealing causing being in the described valve closed in structure.

Then, the scheme being used for remedying this bad quality seals includes liner is fabricated to a part Or two parts, described liner fully extends to be completely covered four periphery edges of lobe, and therefore limits Source of leaks processed.

But, with reference to Fig. 1, the extension liner 1 of the type is frequently the problem that, it stands to exist High pressure that gas in valve causes and high temperature, and therefore it tend to deforming under the effect of thermal expansion.By Being inserted at its external margin 2 between two cast elements in liner, deformation will substantially take place in liner In the core 3 of 1, producing hollow bulb 4 and/or projection, it is likely to be formed the gas for being positioned in valve The leakage path of body.Additionally, in the case of liner 1 deforms and formed hollow bulb 4, it has formation For the risk that stopper section is manually occluded of lobe, and it is therefore hindered to pivot, to connect with described liner 1 Touch, in order to close described valve.In other words, the deformation of liner has the risk of the operation mechanism hindering valve.

Application DE 197 18 862 discloses a kind of valve having and pivoting lobe, and described pivot lobe has Rounded ends part, when valve is closed by bearing against liner, this rounded ends part can be closed Close the opening in liner.

According to an aspect of the present invention, it is an object of the present invention to a kind of engine control valve, have and define The body of inner conduit also includes the lobe that the pin by lobe is pivotally installed, and described lobe includes Part I, described lobe can be at the liner allowing the gas open position by conduit and lobe and valve Pivot between the closed position of contact, described liner especially flat gasket, be fastened to the body of valve, institute Stating exterior contour that liner has in outside around the exterior contour of lobe, liner includes opening and solid part Point, when described lobe in the closed position middle time, described Part I closes the opening in liner, described Lobe includes that protuberance, described protuberance are orientated as when lobe pivots between open and closed positions Time keep contact with the solid section of liner, or vice versa as the same.

Protuberance can separate with the Part I of lobe, say, that when lobe in the closed position middle time, Protuberance does not close the opening in liner, and this closedown is realized by the Part I of lobe.

Protuberance is advantageously positioned in lobe, for use as the support member of the solid section for liner.Tool Body ground, liner is substantially inserted between two cast elements of the body of valve at its periphery edge.Liner Core be consequently formed the region of structural weak, this region is at the flowing height by the gas of described valve May deform under the effect of gentle high pressure, therefore produce and be used for the leakage path of this gas and may stop Described lobe rotates.Protuberance can be used as the permanent support part of the core of liner, keeps and lining The solid section contact of pad, especially runs through the pivot of valve, to march to open position from closed position, Or vice versa as the same.This protuberance can be used as contact stops, and its intention prevents appointing of the solid section of liner What deformation, preferably during lobe rotates whenever.Such protuberance allows to retain lining The geometry integrity of pad, and thereby, it is ensured that the correct operation of valve and its correctly seal.This protuberance can be by Be fastened to lobe interpolation part formed, or can with described lobe be formed as in once-through operation manufacture same One parts.

When lobe in the closed position middle time and/or lobe in an open position middle time, protuberance can be with lining The solid section contact of pad.

Therefore:

-in the closed position of lobe, the Part I of lobe can close the opening in liner, the most convex Go out portion to contact with the solid section of liner, and

-in the open position of lobe, the Part I of lobe does not close the opening in liner, the most convex Go out portion to contact with the solid section of liner.

Protuberance can have appropriate size to keep contacting with the solid section of liner, and does not make lobe more Weight or bigger.

According to variant embodiment, protuberance deformable is to guarantee the close contact with liner.Protuberance and lining It is uniform and equilibrium that contact between the solid section of pad can run through the rotation of lobe, it means that, Described protuberance moves not towards described solid section or away from described reality during the rotary motion of lobe Heart part moves.When lobe pivots, protuberance also pivots, preferably solid by continue with liner The area contact of the most probable deformation of part realizes.

Lobe can include that Part II, described Part II are separated with Part I by the pin of lobe, when Described lobe in the closed position middle time, described Part II flushes with shown solid section, described protrusion Portion is positioned between the Part II of lobe and the pin of lobe.

Advantageously, protuberance has the longitudinal axis being parallel to rotating dog.

Protuberance can highlight towards the Part II of lobe, and described protuberance can be with described Part II one Rise and form space.Lobe can be schematically shown by two alignment portions and a lever arm, and described lever arm holds Carry the rotating dog biased relative to described part.Protuberance can be similar to the projection extended along rotating dog, inserts Enter between described pin and the Part II of lobe.It is formed between protuberance and the Part II of lobe Space is exclusively used in the insertion of the solid section of liner.

Preferably, the cross section of protuberance is defined by linear section and bent section, the two of bent section Two ends of described linear section are linked together by individual end.Linear section corresponds to protuberance Base portion, described protuberance is positioned in lobe by this base portion, and circular segments is corresponding to the appearance of protuberance Face, this circular segments highlights from described lobe.

According to the preferred embodiment of the valve according to the present invention, protuberance is semi-cylindrical form.This is bending Section defines the special circumstances of half-round, say, that protuberance is circular.

Preferably, lobe is positioned in valve and makes, in cross-section, and the bent section of protuberance and liner Solid section contact, lobe causes the protuberance described solid section relative to liner around its rotation sold Relative motion, make the described bent section of described solid section and protuberance keep contacting simultaneously.With this Mode, protuberance runs through the solid section of the rotation for good and all support pad of lobe.

Advantageously, protuberance extends at least one half width of lobe, and described width is that it is along rotating dog The size intercepted.This protuberance can implement the function of the solid section of its support pad, keeps to the greatest extent simultaneously May be little.

Advantageously, the solid section of liner and the region of protrusion contacts be described part for described liner In the region of opening deckle circle.Specifically, the region standing most deformation of the solid section of liner be for The region of opening deckle circle in described liner.Protuberance is positioned in described lobe, to support this sensitivity Region.

Preferably, two parts of lobe are smooth and in continuation each other, first of lobe Dividing and contact with a face of liner, to close described opening, and the Part II of described lobe is solid at it At Bu Fen, the opposing face with described liner flushes.

According to another preferred embodiment of the valve according to the present invention, protuberance includes that at least two is along lobe The part of rotating dog alignment.Specifically, protuberance need not be continuous.Protuberance is evenly distributed in lobe On, with the solid section of support pad effectively.

Running through aforementioned texts, liner can be smooth, say, that the contrary face of liner can be each Individual only belonging to gives plane.

In version, an only part for liner is smooth.

Second target of the present invention is the lobe for manufacturing the valve according to the present invention.

Valve according to the present invention has operationally effective advantage, prevents in the way of simple and suitable The deformation of liner, especially need not the basis redesign of their body.Described valve also has phase Existing valve being kept to the advantage of constant size, this is to add owing to they need not any of optional feature Calais guarantees that it correctly operates.Finally, include having according to the valve of the present invention the most modular excellent Gesture, this is that this depends on the inside of described valve owing to protuberance can have suitable size and geometric arrangement The degree of the stress designed and can be brought by the gas being present in these valves.

Accompanying drawing explanation

In context below, reference accompanying drawing provides retouching in detail of the preferred embodiment of the valve according to the present invention State, in the drawings:

Fig. 1 is the lines figure of the prior art liner after deformation；

Fig. 2 is lobe and the partial view of liner of the valve according to the present invention.In the figure, liner presents For transparent, in order to illustrate the layout of itself and lobe；

Fig. 3 a is the schematic cross section of the liner according to the present invention and lobe, and described lobe is in pass In closed position；With

Fig. 3 b is the schematic cross section of the liner according to the present invention and lobe, and described lobe is in beats In open position.

Detailed description of the invention

Engine control valve according to the present invention can be for example EGR (exhaust gas recirculatioon) valve, and its regulation is logical Cross the flow velocity of the gas in the loop that the exhaust lay out of vehicle combustion engine is connected to inlet line.

With reference to Fig. 1, prior art liner 1 is made up of rigidity rustless steel, and inserts at its periphery edge 2 Enter between two cast elements of the body of described valve 1.Two cast elements are the most made of aluminum.? In variant, a cast element can be made of aluminum, and another cast element is by cast iron or rustless steel Make.Therefore this periphery edge 2 has multiple hole 5, described hole each be intended to be bolted through, make Obtain described liner 1 to be fastened between described cast element.This liner 1 is smooth, has substantially rectangular Shape and little thickness, and have solid section 3 and for gas by opening 6.

With reference to Fig. 2,3a and 3b, valve according to one example embodiment includes that inner conduit is also And work together with lobe 10, described lobe 10 can rotate between fully open position and closed position Mobile, in described fully open position, lobe 10 allows gas to pass through conduit with Peak Flow Rate, In described closed position, lobe completely closes described conduit.Lobe 10 generally rectangle, and there is position In the first rectangle part 11 and the second rectangle part 13 of rotating dog 12 both sides, described part 11,13 It is smooth, is completely in continuation each other, and be rigidly fastened to together.More specifically, Part I 11 and Part II 13 link together at the plane 16 that connects, and described lobe 10 is arranged Have lever arm 17, lever arm 17 originate in described in connect at plane 16 and terminate with rotating dog 12.This lever arm 17 planes being approximately perpendicular to the lobe 10 formed by Part I 11 and Part II 13.Should clarify, Liner shown in Fig. 2 means transparent, though this not to be physics true, due to its generally include but It is not necessarily to include rustless steel, to illustrate its position relative to lobe 10.

With reference to Fig. 3 a, described lobe 10 is installed as in valve rotating so that in a closed position, The Part I 11 of lobe 10 closes opening 6 by contacting with a face of described liner 1, and makes The Part II 13 of lobe 10 in the region of described solid section 3 with the opposing face of described liner 1 Flush.The rotating dog 12 of lobe 10 is positioned in the solid area near liner 1 of described opening 6 The opening 6 being perpendicular in the region of 3 in liner 1.With reference to Fig. 3 b, when lobe 10 is opened to allow gas By time, two parts 11,13 pivot along by the direction of two arrows 14,15 instruction, with far simultaneously Bear against from them or move against the face of the liner 1 flushed.In this configuration, the of lobe 10 A part 11 opens the opening 6 in liner 1, to allow gas flowing to pass through conduit.It should be noted that lobe The rotation in portion 10 is controlled, and its can be fixed between closed position and fully open position multiple In centre position.

With reference to Fig. 1, it is made for one according to the liner 1 of the valve of the example embodiment described by the present invention, And there is the expanded range of four periphery edges that can cover lobe 10.When this liner 1 is not supported Time, it has central area more weak in structure, this central area high pressure at gas and the combination of high temperature Effect is lower may deformation.Specifically, owing to liner 1 fastens at its periphery 2, only the center portion thereof is divided Motion does not has restrained, the effect of the center portion thereof lease making expanded by heating.This deformation may result in liner 1 and distorts, Hollow bulb 4 is produced in the solid section 3 define opening 6.But there is the deformed gasket of hollow bulb 4 1 can hinder the lobe 10 whirler in valve by bracing against described liner 10 and prevent it from rotating System.

With reference to Fig. 2,3a and 3b, allow to by arranging according to the lobe 10 of the valve of described example Having elongated protuberance 18 to prevent the deformation of this liner 1, this elongated protuberance 18 is positioned at lobe 10 On lever arm 17 so that its longitudinal axis parallel extends in the rotating dog 12 of lobe 10.Protuberance 18 is fixed Position is between the Part II 13 and rotating dog 12 of lobe 10, and from lever arm 17 towards lobe 10 Part II 13 highlights.This protuberance 18 forms intention together with the Part II 13 of lobe 10 and is served as a contrast The free space that the solid section 3 of pad 1 occupies.The cross section of this protuberance 18 has linear section 19 and bent section 20, two ends of bent section 20 are by two ends of described linear section 19 Portion links together.Linear section 19 is led to corresponding to the base portion of protuberance 18, described protuberance 18 Cross this base portion to be positioned on lever arm 17, and outside circular segments 20 is corresponding to the circular portion of protuberance 18 Surface, its Part II 13 being parallel to lobe from described lever arm 17 highlights.

With reference to Fig. 3 a, protuberance 18 is positioned on lever arm 17, and configuration sized is for making its sustainable lining The region of the solid section 3 of pad 1, described solid section 3 is opening 6 deckle circle in described liner 1. More accurately, the rounded outer surface 20 that the end of the solid section 3 of liner 1 is defined with protuberance 18 connects The opening 6 touched.

With reference to Fig. 3 b, pivot along by the direction of two arrows 14,15 when lobe 10 rotates about pin 12 During to open, protuberance 18 also pivots, but keeps contacting with the solid section 3 of liner 1.Specifically, The circular portion 20 of the protuberance 18 according to described example is designed to allow for running through the rotation of lobe 10 Move and uniform and constant the contacting of solid section 3 of liner 1.In other words, shown protuberance 18 During the rotation of lobe 10, the solid section 3 not towards liner 1 moves or away from this solid section 3 Mobile.In like fashion, the protuberance 18 in lobe 10 uses effect during the rotary motion of lobe 10 In the support stopper section of the solid section 3 of liner 1, to march to open position from closed position, and instead As the same.This protuberance 18 prevents liner 1 from being deformed by thermal expansion, and helps to maintain expiring of valve The operating condition of meaning, even if in the case of depositing hot gas under stress.

Claims (12)

1. an engine control valve, has and defines the body of inner conduit and include by lobe (10) The lobe (10) pivotally installed of rotating dog (12), described lobe (10) includes first Divide (11) and allowing the gas open position by conduit and lobe (10) and valve can be fastened to originally Pivoting between the closed position that the liner (1) of body contacts, the exterior contour that described liner (1) has exists The outside exterior contour around lobe (10), described liner (1) includes opening (6) and solid section (3), when described lobe (10) in the closed position middle time, described Part I (11) close liner (1) opening (6) in,

Lobe (10) includes Part I (11) the separate protuberance (18) with lobe (10), And protuberance (18) orientate as when lobe (10) pivots between open and closed positions keep Contact with the solid section (3) of liner (1), or vice versa as the same.

2. valve as claimed in claim 1, wherein, lobe (10) includes Part II (13), institute State Part II to be separated with Part I (11), when described by the rotating dog (12) of lobe (10) Lobe in the closed position middle time, described Part II flushes with described solid section (3), described convex Go out portion (18) and be positioned at the Part II (13) of lobe (10) and the rotating dog (12) of lobe (10) Between.

3. valve as claimed in claim 1 or 2, wherein, protuberance (18) has and is parallel to rotate The longitudinal axis of pin (12).

4. valve as claimed in claim 2, wherein, described protuberance (18) has and is parallel to rotate The longitudinal axis of pin (12), described protuberance (18) is towards the Part II (13) of lobe (10) Highlight, and described protuberance (18) forms space together with described Part II (13).

5. valve as claimed in claim 3, wherein, the longitudinal axis parallel of described protuberance (18) In rotating dog (12), the cross section of described protuberance (18) is by linear section (19) and bending section Section (20) defines, and two ends of bent section (20) are by two of described linear section (19) End links together.

6. valve as claimed in claim 5, wherein, described protuberance (18) is semi-cylindrical form.

7. valve as claimed in claim 5, wherein, lobe (10) is positioned in valve and makes, at horizontal stroke In cross section, the bent section (20) of protuberance (18) contacts with the solid section (3) of liner (1), Lobe (10) rotates about the rotation of pin (12) and causes protuberance (18) relative to liner (1) The relative motion of described solid section (3), makes described solid section (3) and described bent section simultaneously (20) contact is kept.

8. valve as claimed in claim 3, wherein, protuberance (18) is in lobe (10) at least Extending in one half width, described width is its size intercepted along rotating dog (12).

9. valve as claimed in claim 1 or 2, wherein, the solid section (3) of liner (1) with The region that protuberance (18) contacts be described solid section (3) for the opening in described liner (1) (6) region of deckle circle.

10. valve as claimed in claim 2, wherein, two parts (11,13) of lobe (10) It is smooth and in continuation each other, the Part I (11) of lobe (10) and liner (1) The contact of face, to close described opening (6), and the Part II (13) of described lobe (10) Opposing face at its solid section (3) place with described liner (1) flushes.

11. valves as claimed in claim 1 or 2, wherein, protuberance (18) includes at least two edge The part of the rotating dog alignment of lobe (10).

12. valves as claimed in claim 1 or 2, wherein, liner (1) is smooth.