CN203925642U - Valve seat packing ring - Google Patents
Valve seat packing ring Download PDFInfo
- Publication number
- CN203925642U CN203925642U CN201420001871.0U CN201420001871U CN203925642U CN 203925642 U CN203925642 U CN 203925642U CN 201420001871 U CN201420001871 U CN 201420001871U CN 203925642 U CN203925642 U CN 203925642U
- Authority
- CN
- China
- Prior art keywords
- valve seat
- packing ring
- seat packing
- countersink
- seating face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/22—Valve-seats not provided for in preceding subgroups of this group; Fixing of valve-seats
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Gasket Seals (AREA)
- Lift Valve (AREA)
Abstract
The utility model relates to valve seat packing ring.Embodiment provides the valve seat packing ring that comprises seating face.Radially be positioned at seating face outside and at least in part from seating face axial dipole field for the circumference contact surface that contacts cylinder head.Interval is radially positioned between seating face and cylinder head and with seating face axially aligns at least in part.In this way, Impact energy and the vibration of impacting valve seat from engine valve can trend towards not arriving cylinder head, and can be reduced from the level of the ticktock noise that can hear of motor.Like this, repeating to close by valve the noise and vibration and the uncomfortable property that cause can be reduced or eliminate.
Description
Technical field
The utility model relates to valve seat packing ring.
Background technique
Common engine can produce the very large ticktock noise that can hear at present.The frequency range of ticktock noise conventionally at hundreds of Hz in the scope of 15.0kHz.The gas distribution system of motor has been confirmed to be the source of impact noise, the shock while comprising valve-closing between valve and valve seat, and gas distribution system generally comprises tappet, valve, cylindrical valve spring, valve seat and (multiple) camshaft.Current valve seat has very high hardness because of its geometrical construction and its assembling mode, so high frequency ticktock noise can be delivered on cylinder head easily.
Valve seat packing ring is arranged in cylinder head to provide susceptor surface and conventionally for receiving the shock from valve.Valve seat packing ring is generally annular, and is extruded or presses in the countersink of oral area separately of intake duct and/or air outlet flue.Make great efforts valve seat packing ring from general loop configurations amendment, so that some advantages to engine design and/or operation to be provided.But, herein inventor do not recognize have any in order to reduce the amendment of the valve seat packing ring that noise object made.
An example of valve seat packing ring amendment is disclosed in US Patent No. 6,260, in 531.The disclosure provides the packing ring of the valve seat for being combined with cylinder head, and comprises some notches, and the surface engagement in the countersink in notch and cylinder head is to form multiple passages or pipeline, to allow fuel freely to pass between this surface and this packing ring.This pipeline intention prevents that fuel is trapped between countersink and packing ring substantially, and prevents the formation of caustic acid and by product.
Model utility content
Inventor has recognized several problems of this method at this.For example, the method does not recognize that valve seat packing ring is in motor, to be used for finding the potential region that alleviates noise chance.Needed is can isolate to clash into and noise isolation meanwhile still keeps the axial rigidity in enough intensity and packing ring thereupon method, when wherein this shock and noise are by valve-closing, produces against valve seat.
The valve seat packing ring that comprises seating face can be provided according to embodiment of the present disclosure.Can be radially positioned at seating face outside and at least in part from seating face axial dipole field for the circumference contact surface that contacts cylinder head.Interval can be radially positioned between seating face and cylinder head and at least in part and be axially aligned with seating face.
According to an embodiment of the present utility model, wherein said interval is gap.
According to an embodiment of the present utility model, wherein, in the time that described seating face is contacted by valve, valve base patch loop material is out of shape, thereby closes at least in part described gap.
According to an embodiment of the present utility model, in wherein said gap and described cylinder head, the internal surface of countersink is adjacent.
According to an embodiment of the present utility model, in wherein said gap and described cylinder head, the internal surface of countersink is spaced apart, and wherein said interval is the annular space with wedge-shaped cross-section.
According to the utility model, a kind of valve seat packing ring is also provided, it comprises: circumferential body, described main body has peripheral sidewall and the outside surface of annular, described outside surface has at least inside angled internal surface and the outer surface perpendicular to described main center axis, described outer surface comprises interval, and this interval and described inside angled internal surface are spaced apart and non-intersect with described inside angled internal surface, and axially align with described seating face in this interval.
According to an embodiment of the present utility model, wherein said interval forms outside angled surface in the outside of described outer surface.
According to an embodiment of the present utility model, wherein said interval forms groove in described outer surface.
According to an embodiment of the present utility model, wherein said groove crosses around described outer surface completely around the described central axis of described main body.
According to the utility model, a kind of valve seat packing ring is also provided, it comprises: outer surface, described outer surface has substantially cylindrical part and frustum part, described substantially cylindrical part is configured to fit in the countersink in cylinder head and contacts with the countersink in cylinder head, and described frustum part is configured to described countersink spaced apart.
According to an embodiment of the present utility model, it further comprises the center hole through described packing ring, and is formed on the seating face in described center hole, and described seating face substantially axially aligns with described frustum part.
According to an embodiment of the present utility model, wherein said frustum part forms wedge gap between described outer surface and described countersink.
According to an embodiment of the present utility model, wherein said valve seat packing ring comprises that central axis and wherein said gap are included in the maximum radial thickness between 0.1mm and 1.0mm.
According to an embodiment of the present utility model, wherein said frustum part comprises edge, and described edge and described substantially cylindrical part are spaced apart, is positioned to the nominal of wherein said edge be separated by 0.1mm to 1.0mm with the internal surface of described countersink.
According to an embodiment of the present utility model, wherein said frustum part comprises edge, and described edge and described substantially cylindrical part are spaced apart, is positioned to the nominal of wherein said edge and the internal surface of the described countersink 0.3mm of being separated by.
According to an embodiment of the present utility model, wherein, in the time that valve is forced to contact with described valve seat, described gap is closed substantially, and wherein valve seat packing ring is elastomer.
According to an embodiment of the present utility model, a part for wherein said frustum part extends beyond the outer circumferential edges of described countersink.
According to the utility model, a kind of valve seat device is also provided, it comprises: the countersink in cylinder head, described countersink has internal surface; Valve seat packing ring, described valve seat packing ring fits in described countersink and has outer surface, and described outer surface comprises: first portion, and described first portion contacts the internal surface of described countersink, and second portion, the internal surface of described second portion and described countersink is spaced apart; And seating face, described seating face is positioned at the radially inner side of the outer surface of described valve seat packing ring, and axially aligns at least in part with the second portion of described valve seat packing ring.
According to an embodiment of the present utility model, wherein, when in deformation state not, described seating face is a part for curvilinear surface, and described curvilinear surface extends beyond described seating face, and crossing with described second portion at ring edge place.
According to an embodiment of the present utility model, wherein provide at least one or more in following structure: described second portion forms annular groove between described outer surface and the internal surface of described countersink, described second portion forms wedge-shaped impression between described outer surface and the internal surface of described countersink, and described valve seat packing ring is made up of elastic material.
By this way, Impact energy and the vibration of impacting valve seat from engine valve can trend towards not arriving cylinder head, and can be reduced from the level of the ticktock noise that can hear of motor.Some embodiments can provide interval with the form in gap, and this can trend towards making the radial rigidity of gasket areas more pliable and tougher, still can bear the impact force from valve simultaneously.Flexibility can provide vibration isolation under certain frequency, and can provide especially effective aspect high frequency isolation.The lower part of valve seat can be configured to assemble intensity and axial rigidity and firm intensity and durability can be provided and can be used to keep on the position of base in press fit arrangement.
Should be understood that, provide above general introduction so that the series of concepts further describing with the form introduction of simplifying in embodiment.This does not also mean that key or the essential feature of determining theme required for protection, and the scope of claimed theme is limited uniquely by claim.Further, theme required for protection is not limited to solve mode of execution above or shortcoming that mention in any part of the present disclosure.
Brief description of the drawings
Fig. 1 is the schematic diagram of motor.
Fig. 2 is according to the detailed cross-section of example valve gear of the present disclosure, and this valve gear can use together with the motor illustrating in Fig. 1.
Fig. 3 is according to the enlarged cross-sectional view of a part for the valve gear illustrating in Fig. 2 of the present disclosure.
Fig. 4 is similar but illustrate the enlarged cross-sectional view of another kind of example valve gear according to of the present disclosure and Fig. 2.
Fig. 5 is the enlarged cross-sectional view illustrating according to another kind of example valve gear of the present disclosure.
Fig. 6 is the enlarged cross-sectional view illustrating according to another kind of example valve gear of the present disclosure.
Fig. 7 is the enlarged cross-sectional view illustrating according to another kind of example valve gear of the present disclosure.
Fig. 8 is the enlarged cross-sectional view illustrating according to another kind of example valve gear of the present disclosure.
Fig. 9 is the enlarged cross-sectional view illustrating according to another kind of example valve gear of the present disclosure.
Embodiment
In one example, the application also relates to valve seat packing ring, and this valve seat packing ring is used for by radially providing interval between valve seat packing ring surface and cylinder head countersink, slow down the valve that passes to cylinder head to clash into vibration.Other extra or interchangeable examples comprise valve seat, and this valve seat comprises groove, and this groove is to be positioned at marginal surface the piston in the face of engine cylinder around the form of base periphery.
Fig. 1 is the schematic diagram that a cylinder of multicylinder engine 10 is shown, this multicylinder engine can be included in the propulsion system of Motor Vehicle.Motor 10 can be at least in part by comprising the control system of controller 12 and being controlled via the input of input device 130 from vehicle driver 132.In this example, input device 130 comprises accelerator pedal and pedal position sensor 134, and pedal position sensor 134 is for generating proportional pedal position signal PP.The firing chamber (being cylinder) 30 of motor 10 can comprise chamber wall 32, and piston 36 is placed on wherein.Piston 36 can be connected to bent axle 40, to the to-and-fro motion of piston is converted to rotatablely moving of bent axle.Bent axle 40 can be connected to via intermediate gearbox system at least one driving wheel of vehicle.And starter motor can be connected to bent axle 40 so that motor 10 can carry out start-up function via flywheel.
Firing chamber 30 can receive inlet air from intake manifold 44 via intake duct 42, and can discharge combustion gas via air outlet flue 48.Intake manifold 44 and air outlet flue 48 can optionally be communicated with firing chamber 30 via corresponding intake valve 52 and exhaust valve 54.In certain embodiments, firing chamber 30 can comprise two or more intake valves and/or two or more exhaust valves.
Intake valve 52 can be controlled via electric air valve final controlling element (EVA) 51 by controller 12.Similarly, exhaust valve 54 can be controlled via EVA53 by controller 12.Under some situations, controller 12 can change the signal that offers final controlling element 51 and 53 to control the opening and closing of intake valve and exhaust valve separately.The position of intake valve 52 and exhaust valve 54 can be determined by valve position sensor 55 and 57 respectively, and valve position sensor 55 and 57 instruction valves are along the displacement of the axle (referring to Fig. 2) of final controlling element.As another example, cylinder 30 can comprise via electric air valve and drives the intake valve controlled and via the exhaust valve of actuated by cams control, actuated by cams comprises cam profile transformation system (CPS) and/or variable cam timing (VCT).
Fuel injector 66 is depicted as with certain configuration and is arranged in intake duct 44, and this configuration provides the intake port injection in the known intake duct that fuel is injected to 30 upstreams, firing chamber.Fuel injector 66 can with the pulse width of signal FPW burner oil pro rata, signal FPW receives from controller 12 via electronic driver 68.Fuel can be sent to fuel injector 66 by fuel system (not shown), and fuel system comprises fuel pot, petrolift and fuel rail.In certain embodiments, firing chamber 30 can alternatively or extraly comprise the fuel injector that is directly connected to firing chamber 30, and for injecting fuel directly into firing chamber, the method is called as direct injection.
Intake duct 42 can comprise closure 62, and closure 62 has Rectifier plate 64.In this specific example, the position of Rectifier plate 64 can change by controller 12 via offering the electric motor that is included in closure 62 or the signal of final controlling element, and this configuration is generally known as Electronic Throttle Control (ETC).In this method, closure 62 can be operated in other engine cylinders, to change the inlet air that offers firing chamber 30.The position of Rectifier plate 64 can be provided for controller 12 by throttle position signal TP.Intake duct 42 can comprise Mass Air Flow sensor 120 and Manifold Air Pressure sensor 122, for signal MAF and MAP is separately provided to controller 12.
Under the operator scheme of selecting, ignition system 88 can, in response to the spark advance signal SA that carrys out self-controller 12, provide ignition spark via spark plug 92 to firing chamber 30.Exhaust sensor 126 is illustrated the air outlet flue 48 that is connected to emission control equipment 70 upstreams.Sensor 126 can be any sensor that is suitable for the instruction that evacuating air/fuel ratio is provided, such as linear oxygen sensors or UEGO(is general or wide territory exhaust gas oxygen sensor), bifurcation lambda sensor or EGO, HEGO(hot type EGO), NOx, HC or CO sensor.Emission control equipment 70 is shown as along the air outlet flue 48 in exhaust sensor 126 downstreams and arranges.Equipment 70 can be three-way catalyst (TWC), NOx catcher, various other emission control equipments or its combination.
Controller 12 is illustrated as microcomputer in Fig. 1; it comprises: microprocessor unit (CPU) 102, input/output end port (I/O) 104, for the electronic storage medium of executable program and calibration value are illustrated as ROM chip (ROM) 106, random-access memory (ram) 108, keep-alive storage (KAM) 110 and data/address bus in this particular example.Controller 12 can receive from the various signals of sensor that are connected to motor 10, except those signals of discussing before, also comprises: from the measured value of the air inlet Mass Air Flow (MAF) of Mass Air Flow sensor 120; From the engineer coolant temperature (ECT) of temperature transducer 112 that is connected to cooling cover 114; From the hall effect sensor 18(or the other types that are connected to bent axle 40) PIP Profile Igntion PickUp signal (PIP); From the throttle position (TP) of throttle position sensor; With the absolute mainfold presure signal (MAP) from sensor 122.Engine rotational speed signal RPM, can generate from signal PIP by controller 12.The instruction of vacuum in intake manifold or pressure can be provided provide from the mainfold presure signal MAP of manifold pressure sensor.In one example, also can generate in each revolution of bent axle the uniformly-spaced pulse of predetermined quantity as the sensor 118 of engine rotation speed sensor, indicate crank position with this.
Storage medium ROM (read-only memory) 106 can be programmed with mechanized data, mechanized data represents the instruction that can be carried out by processor 102, and this instruction can be expected but the distortion specifically do not enumerated for realizing following described method or program and other.
As described above, Fig. 1 only illustrates a cylinder of multicylinder engine, and each cylinder can similarly comprise himself one group of intake valve/exhaust valve, (multiple) valve position sensor, fuel injector, spark plug etc.
Fig. 2 is the detailed cross sectional view of valve gear 198, and valve gear 198 can be for example intake valve 52 or the exhaust valve 54 using together with the motor 10 illustrating in Fig. 1 or other motors.The valve illustrating in Fig. 2 can be collectively referred to as valve 153.Thereby valve 153 can be configured to move in passage 155 to open and close passage 155 and allow respectively fluid through passage 155, or substantially prevents that fluid is from passage 155 processes, and enters or discharge firing chamber 30.Valve 153 is illustrated in the position partially opening.Passage 155 can be formed in cylinder head 157 or with cylinder head 157 and be connected.Cylinder head 157 can be positioned at cylinder block top (not shown).Firing chamber 30 can be formed in cylinder block at least in part, and one end of cylinder block can be closed by cylinder head 157.Passage 155 can comprise countersink 159, and countersink 159 is formed on the oral area of passage 155.
Fig. 3 is the perspective view of a part for the valve gear 198 shown in Fig. 2, and can be in conjunction with Fig. 2 reference.Various embodiments can comprise valve seat packing ring 200, and valve seat packing ring 200 can be placed in countersink 159.Valve seat packing ring 200 can comprise seating face 202, with the circumference contact surface 204 for contacting cylinder head 157.Contact surface 204 can be radially positioned at seating face 202 outsides, as radial oriented arrow 208 illustrates, and is also positioned to from seating face 202 axial dipole field at least in part, as explanation illustrated in the arrow 210 of axial orientation.
Valve seat packing ring 200 also can comprise interval 212, and interval 212 is radially arranged between seating face 202 and cylinder head 157, and axially aligns with seating face 202 at least in part.Interval 212 can make the radial stiffness in valve seat region more flexible, or in the time that valve 153 clashes into seating face 202, for seating face 202 and cylinder head 157 are isolated.Valve 153 can contact with seating face 202 at 154 places, valve surface.This elasticity and/or isolation can for example, for isolating various frequencies, high frequency.Like this, repeating to close by valve the noise and vibration and the uncomfortable property that cause can be reduced or eliminate.
In one example, seating face 202 comprises at least three surfaces at an angle to each other, one perpendicular to valve-seat bore, and two other surface, one of them comprises interval, and this two other surface with become angle and angled relative to one another obliquely perpendicular to the surface of valve-seat bore.In one example, the surface of seating face 202 can be annular and when form each other adjacent ring in the time that the direction of piston is seen.
In some cases, valve seat packing ring 200 can have radiused edges 211.Radiused edges 211 can be assisted valve seat packing ring 200 is inserted to countersink 159.Some exemplary embodiments can not comprise radiused edges 211.Some embodiments can comprise other surface characteristics.
Various embodiments can provide valve seat packing ring 200, this valve seat packing ring 200 can comprise the outer surface 216 with substantially cylindrical part 218, and this substantially cylindrical part 218 is configured to fit in the countersink 159 in cylinder head 157 and contacts with the countersink 159 in cylinder head 157.Cylindrical part 218 can or can be substantially corresponding with above-mentioned contact surface 204.Outer surface 216 also can have frustum part 220, and it is configured to countersink 159 spaced apart.This can correspondingly radially form interval 212 between seating face 202 and countersink 159.
Can there is the center hole 222 by valve seat packing ring 200.Seating face 202 can be formed in center hole 222, and can substantially axially align with frustum part 220.Frustum part 220 can form wedge gap 214 between outer surface 216 and countersink 159, or has the gap 214 of wedge-shaped cross-section.
Valve seat packing ring 200 can comprise central axis 224.Gap 214 can comprise the maximum radial thickness 226 of prearranging quatity.For example, maximum radial thickness 226 can be at about 0.1mm between 1.0mm.Frustum part 220 can comprise edge 228, and edge 228 is spaced apart with substantially cylindrical part 218, and wherein edge 228 is traditionally arranged to be the about 0.1mm of internal surface apart from countersink to 1.0mm.In certain embodiments, edge 228 can be set to nominal the about 0.3mm of internal surface 230 apart from countersink 159.
In certain embodiments, valve seat packing ring 202 can be made up of flexibility or elastic material, or comprises flexibility or elastic material.In some instances, valve seat packing ring 202 can be made up of elastomer.Valve seat packing ring 200 can be configured to distortion in the time that seating face 202 contacts with valve 153.In certain embodiments, in the time that valve 153 is forced to contact with seating face 202, gap 214 can be closed at least in part, or substantially closes.And gap 214 can be continuous with the side surface in hole, finish the position being in contact with one another in packing ring and hole.
In certain embodiments, such as an embodiment who illustrates in Fig. 3, as mentioned above, interval 212 can be gap 214, gap 214 can be set to cylinder head 157 in the internal surface 230 of countersink 159 adjacent.In another exemplary embodiment, interval 212 can differently present.For example, Fig. 4 illustrates according to valve seat packing ring 200 of the present disclosure, and wherein interval 212 can be gap 314, and gap 314 can be separated by a distance with the internal surface of countersink 159 230.
Fig. 5 illustrates according to another exemplary embodiment of the present disclosure.Interval 212 can be two or more gaps 414, two gaps 414 that for example illustrate.
Fig. 6 illustrates according to another exemplary embodiment of the present disclosure.The major part of valve seat packing ring 200 can be made up of the first material, and interval 212 can be made up of the second material 514.In some cases, interval 212 can be by having elasticity or flexible material be made, this elasticity or flexible can from make the elasticity of most material of valve seat packing ring 200 or flexible different.Different materials, and/or border between material can provide the energy delivery mechanisms of poor efficiency.By this way, the energy that clashes into seating face 202 from valve 153 can pass to cylinder head 157 not too significantly.
Fig. 7 illustrates according to another exemplary embodiment of the present disclosure.As illustration, interval 212 can be annular gap, and it has substantially orthogonal cross section 614.
Fig. 8 illustrates according to another exemplary embodiment of the present disclosure.As described, interval 212 can be a part for frustum part 220 or the part that can comprise frustum part 220, and it extends beyond the outer, circumferential edge 232 of countersink 159.In certain embodiments, valve seat packing ring 200 can not comprise frustum part 220, and interval 212 can be column part, and it can extend beyond the outer circumferential edges 232 of countersink 159.
Especially refer again to Fig. 2 and Fig. 3, some embodiments can provide valve seat device 300, and valve seat device 300 can be included in the countersink 159 in cylinder head 157, and countersink 159 has internal surface 230.Valve seat packing ring 200 can be adapted in countersink 159 and can have outer surface 216.Outer surface 216 can comprise first portion 218 and second portion 220, and first portion 218 contacts countersink internal surface 230, second portion 220 and countersink internal surface 230 intervals.Seating face 202 can be at valve seat packing ring outer surface 216 radially inner sides, and axially align at least in part with valve seat packing ring second portion 220.
Also with reference to some in other accompanying drawings, in certain embodiments, second portion 220 can form annular groove 214,314,414,614 between outer surface 216 and countersink internal surface 230.Second portion 220 can form wedge-shaped impression between outer surface 216 and countersink internal surface 230.Valve seat packing ring can be made up of elastomeric material.
Fig. 9 illustrates according to another exemplary embodiment of the present disclosure.This example view explanation valve seat device, this valve seat device can be configured to box lunch in the time of deformation state not, and seating face 202 can be a part for curvilinear surface 902.In some cases, curvilinear surface 902 can extend beyond seating face 200 and can be crossing with second portion 220 at ring edge 940.
In any one of Fig. 2-9, comprise gap, interval, groove etc., can extend continuously around the whole girth of packing ring.In other examples, gap, interval, groove etc. can be with the pattern of circulation separately around the annular surfaces towards piston.
Should be understood that, device described herein, system and method are exemplary, and these specific embodiments are not considered to restrictive, because various deformation is expected.Accordingly, the disclosure comprises all novelties and the non-obvious combination of various device disclosed herein, system and method, and any and all equivalents.
Claims (20)
1. a valve seat packing ring, is characterized in that, comprising:
Seating face;
Circumference contact surface, it is shaped as contact cylinder head, and this circumference contact surface is radially positioned at outside seating face and from described seating face axial dipole field at least in part; And
Interval, it and is axially aligned with described seating face radially between described seating face and described cylinder head at least in part.
2. valve seat packing ring according to claim 1, is characterized in that, wherein said interval is gap.
3. valve seat packing ring according to claim 2, is characterized in that, wherein, in the time that described seating face is contacted by valve, valve base patch loop material is out of shape, thereby closes at least in part described gap.
4. valve seat packing ring according to claim 2, is characterized in that, in wherein said gap and described cylinder head, the internal surface of countersink is adjacent.
5. valve seat packing ring according to claim 2, is characterized in that, in wherein said gap and described cylinder head, the internal surface of countersink is spaced apart, and wherein said interval is the annular space with wedge-shaped cross-section.
6. a valve seat packing ring, is characterized in that, comprising:
Circumferential body, described main body has peripheral sidewall and the outside surface of annular, described outside surface has at least inside angled internal surface and the outer surface perpendicular to described main center axis, described outer surface comprises interval, this interval and described inside angled internal surface are spaced apart and non-intersect with described inside angled internal surface, and axially align with described seating face in this interval.
7. valve seat packing ring according to claim 6, is characterized in that, wherein said interval forms outside angled surface in the outside of described outer surface.
8. valve seat packing ring according to claim 6, is characterized in that, wherein said interval forms groove in described outer surface.
9. valve seat packing ring according to claim 8, is characterized in that, wherein said groove crosses around described outer surface completely around the described central axis of described main body.
10. a valve seat packing ring, is characterized in that, comprising:
Outer surface, described outer surface has substantially cylindrical part and frustum part, described substantially cylindrical part is configured to fit in the countersink in cylinder head and contacts with the countersink in cylinder head, and described frustum part is configured to described countersink spaced apart.
11. valve seat packing rings according to claim 10, is characterized in that, it further comprises the center hole through described packing ring, and are formed on the seating face in described center hole, described seating face substantially axially aligns with described frustum part.
12. valve seat packing rings according to claim 10, is characterized in that, wherein said frustum part forms wedge gap between described outer surface and described countersink.
13. valve seat packing rings according to claim 12, is characterized in that, wherein said valve seat packing ring comprises that central axis and wherein said gap are included in the maximum radial thickness between 0.1mm and 1.0mm.
14. valve seat packing rings according to claim 10, it is characterized in that, wherein said frustum part comprises edge, and described edge and described substantially cylindrical part are spaced apart, is positioned to the nominal of wherein said edge be separated by 0.1mm to 1.0mm with the internal surface of described countersink.
15. valve seat packing rings according to claim 10, it is characterized in that, wherein said frustum part comprises edge, and described edge and described substantially cylindrical part are spaced apart, is positioned to the nominal of wherein said edge and the internal surface of the described countersink 0.3mm of being separated by.
16. valve seat packing rings according to claim 12, is characterized in that, wherein, in the time that valve is forced to contact with described valve seat, described gap is closed substantially, and wherein valve seat packing ring is elastomer.
17. valve seat packing rings according to claim 10, is characterized in that, a part for wherein said frustum part extends beyond the outer circumferential edges of described countersink.
18. 1 kinds of valve seat devices, is characterized in that, comprising:
Countersink in cylinder head, described countersink has internal surface;
Valve seat packing ring, described valve seat packing ring fits in described countersink and has outer surface, and described outer surface comprises:
First portion, described first portion contacts the internal surface of described countersink, and
Second portion, the internal surface of described second portion and described countersink is spaced apart; And
Seating face, described seating face is positioned at the radially inner side of the outer surface of described valve seat packing ring, and axially aligns at least in part with the second portion of described valve seat packing ring.
19. valve seat devices according to claim 18, it is characterized in that, wherein, when in deformation state not, described seating face is a part for curvilinear surface, described curvilinear surface extends beyond described seating face, and crossing with described second portion at ring edge place.
20. valve seat devices according to claim 18, it is characterized in that, there is at least one or more in following structure: described second portion forms annular groove between described outer surface and the internal surface of described countersink, described second portion forms wedge-shaped impression between described outer surface and the internal surface of described countersink, and described valve seat packing ring is made up of elastic material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/734,724 | 2013-01-04 | ||
| US13/734,724 US20140190441A1 (en) | 2013-01-04 | 2013-01-04 | Valve seat insert |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203925642U true CN203925642U (en) | 2014-11-05 |
Family
ID=51019185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420001871.0U Expired - Fee Related CN203925642U (en) | 2013-01-04 | 2014-01-02 | Valve seat packing ring |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20140190441A1 (en) |
| CN (1) | CN203925642U (en) |
| DE (1) | DE102013114952A1 (en) |
| RU (1) | RU145980U1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10731523B2 (en) | 2018-11-13 | 2020-08-04 | Caterpillar Inc. | Valve seat insert for internal combustion engine profiled to resist valve recession |
| US11499515B2 (en) * | 2019-02-08 | 2022-11-15 | Delphi Technologies Ip Limited | Fuel pump and inlet valve assembly thereof |
| US11060425B2 (en) | 2019-03-13 | 2021-07-13 | Caterpillar Inc. | Valve seat insert for engine head having venturi flow crowns and seating surface profiled for limiting valve recession |
| US10989321B2 (en) | 2019-04-26 | 2021-04-27 | Caterpillar Inc. | Double-crowned valve seat insert having seating surface formed of hard-facing material |
| US10767520B1 (en) * | 2019-08-19 | 2020-09-08 | Caterpillar Inc. | Valve seat insert for long life natural gas lean burn engines |
| DE102019218466A1 (en) * | 2019-11-28 | 2021-06-02 | Mahle International Gmbh | Internal combustion engine |
| US11215089B2 (en) | 2019-12-13 | 2022-01-04 | Caterpillar Inc. | Engine head assembly with valve seat insert with stiffness relief cutout |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2665675A (en) * | 1952-03-31 | 1954-01-12 | Richard H Sheppard | Valve seat insert |
| ZA805329B (en) * | 1979-09-08 | 1981-08-26 | Massey Ferguson Perkins Ltd | Valve seats |
| US6260531B1 (en) | 2000-03-30 | 2001-07-17 | Ford Global Tech., Inc. | Valve seat insert |
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2013
- 2013-01-04 US US13/734,724 patent/US20140190441A1/en not_active Abandoned
- 2013-12-24 RU RU2013157504/06U patent/RU145980U1/en not_active IP Right Cessation
- 2013-12-30 DE DE201310114952 patent/DE102013114952A1/en not_active Withdrawn
-
2014
- 2014-01-02 CN CN201420001871.0U patent/CN203925642U/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| RU145980U1 (en) | 2014-09-27 |
| US20140190441A1 (en) | 2014-07-10 |
| DE102013114952A1 (en) | 2014-07-10 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20200102 |
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| CF01 | Termination of patent right due to non-payment of annual fee |