CN101268256B - Two-stroke large diesel engine - Google Patents
Two-stroke large diesel engine Download PDFInfo
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- CN101268256B CN101268256B CN200580047596XA CN200580047596A CN101268256B CN 101268256 B CN101268256 B CN 101268256B CN 200580047596X A CN200580047596X A CN 200580047596XA CN 200580047596 A CN200580047596 A CN 200580047596A CN 101268256 B CN101268256 B CN 101268256B
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- large diesel
- seal ring
- valve
- stroke large
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- 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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
- F01L1/462—Valve return spring arrangements
- F01L1/465—Pneumatic arrangements
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- 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
- F01L3/08—Valves guides; Sealing of valve stem, e.g. sealing by lubricant
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- 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
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Lift Valve (AREA)
Abstract
In a two-stroke reciprocating piston engine having at least one cylinder (1) whose combustion chamber (3) has an outlet opening (4), which can be controlled by an outlet valve (5) which can be actuated by means of an actuating device which comprises a feed device and a return device, and on whose cylinder head (2) is placed a valve housing (9) which comprises an outlet duct (8), which adjoins the outlet opening (4) of the combustion chamber (3), and a guide sleeve (10), which engages through the upper wall of said valve housing (9), for a shank (7), which extends through the outlet duct (8), of the outlet valve (5), wherein the return device has a piston (15), which is attached to the valve shank (7), and a working space (17) which is delimited by said piston (15), is acted on with compressed air and is sealed off from an annular gap (11),; which is present between the mutually facing guide faces of the guide sleeve (10) and valve shank (7), communicates with the outlet duct (8) and can be supplied with oil, by a sealing device which is arranged in the region of the upper, outlet-duct-remote end of the annular gap (11) and has at least one sealing ring (22), according to the invention, it is possible to provide a simple design and a service-free mode of operation in that, above the sealing ring (22), which faces towards the outlet duct (8), of the sealing device, an oil reservoir (24 and 31 and 36) is provided which can be filled with oil and is filled with oil at the upper side, which faces away from the outlet duct (8), of said sealing ring (22).
Description
Technical field
The present invention relates to a kind of two-stroke large diesel engine.
Background technique
One this type of setting is known by DE 101 61 438 A1.Give at the guide surface of guide pin bushing and the annular gap incoming oil between the valve stem and realize preventing from reliably to enter into annular gap from the combustion residue of exhaust passage, they can cause the corrosion of valve stem and in the past to the destruction of the seal ring of seal arrangement.On by above-mentioned DE 101 61 438 A1 known devices, annular gap is supplied with the oil of shunting by a proportioner that sets from the apply device that is equipped on outlet valve.The proportioner that is provided with on known devices causes having the mode of structure of the costliness of high manufacture cost and maintenance expenses.
Summary of the invention
Therefore, as starting point, the objective of the invention is to, so improve the device of the above-mentioned type by means of measure simple and with low cost, make and to lack the proportioner that needs up to now, but guarantee the reliable oil supply of the annular gap between valve stem and guide pin bushing, and guarantee to be designed to the reliable functioning of the resetting means of pneumatic spring.
By two-stroke large diesel engine of the present invention, comprise at least one cylinder, the firing chamber of this cylinder has a relief opening, this relief opening can be controlled by the outlet valve of operation equipment operation by one, described operation equipment comprises an advancing means and a resetting means, suit one valve pocket on the cylinder head of described cylinder, this valve pocket comprises that an exhaust passage and that links to each other with the relief opening of firing chamber passes the guide pin bushing of its upper wall, this guide pin bushing is used for the valve stem that one of outlet valve passes the exhaust passage, wherein resetting means has a piston and that is installed on the valve stem and infeeds compressed-air actuated active chamber by what piston limited, this active chamber with respect to guide pin bushing and valve stem mutually towards guide surface between exist, the annular gap that is communicated with the exhaust passage by one above annular gap away from setting in the zone of the end of exhaust passage, seal arrangement sealing with at least one seal ring, but described annular gap incoming oil, it is characterized in that, but the oil sump that an incoming oil is set above the seal ring of exhaust passage at seal arrangement, the extending oil of described oil sump is located at seal arrangement that the upper end portion of annular gap is provided with, towards the seal ring of exhaust passage, the upside of exhaust passage dorsad, and extending oil floods described seal ring, so that give the annular gap incoming oil constantly from the top.Realize by following measure by this purpose of the present invention, but promptly at the oil sump that an incoming oil is set above the seal ring of exhaust passage of seal arrangement, the extending oil of described oil sump is positioned at the upside of the annular gap dorsad of above-mentioned seal ring.
These measures guarantee, be arranged on the end, top " cold " of annular gap seal arrangement, the oil that existed the oil sump all the time from the top of the seal ring towards the exhaust passage flood.At this, these oil of clamp-oning the seal clearance of seal arrangement by pressure in pneumatic resetting means active chamber with by the motion of valve stem and flowing through the sealing gap not only cause good lubricated of the airtight sealing of resetting means active chamber and seal ring supporting plane in an advantageous manner, and also cause being positioned at the incoming oil controllably of the annular gap of seal ring below simultaneously.The oil sump that is arranged on the seal ring top is therewith correspondingly also as the oil source of supplying with above-mentioned annular gap oil, and these oil can stop combustion residue to enter annular gap reliably.Because these oil are by motions transportation of pressure in the active chamber and valve stem, so also can produce the simplest and mode of structure that need not to keep in repair.At this, oil consumption can keep in the boundary of regulation by the physical dimension of seal ring, although make simple batching and the little oil consumption reliably of guaranteeing of mode of structure.Therefore generally obtain outstanding Economy by measure of the present invention.
The favourable structure of important measures and conform with the purpose expansion structure more in following explanation.
Oil sump is preferably supplied with the leakage oil that flows out at least in part from the hydraulic feed device that is equipped on outlet valve.This obtains the mode of structure of a special simple and inexpensive.
Usually, outlet valve disposes the resetting means that is designed to pneumatic spring that a hydraulic feed device and is provided with below this, it have one thus restricted air fed active chamber, be arranged on the piston on the valve stem.At this, the leakage oil that flows out from apply device can drop onto on the piston of pneumatic spring, and the guide surface of the circumference side of process piston enters active chamber then.At this, people conform with the destination assembles oil in the active chamber bottom section, and the oil sump that produce to need thus wherein on purpose is provided with one and divides the return tube of fork from this oil sump, and a safety valve that is used for the active chamber release wherein is set.By regulating the pressure of opening of safety valve, can keep the oil level of the needs in the oil sump here.
According to a particularly advantageous expansion structure, a spill pipe that stretches into oil sump can be set before safety valve, the overflow seamed edge location of spill pipe is higher than the seal ring that is flooded by oil.This can simplify the adjusting of safety valve, because oil level determines that by spill pipe its top edges works as the overflow seamed edge.
Resetting means is arranged on the operation equipment below of hydraulic pressure, and this resetting means is pneumatic resetting means, the active chamber of this pneumatic resetting means, with the opposed bottom section of piston comprise oil sump, and can be by safety valve unloading, this safety valve is arranged on one from the return tube that the oil sump bifurcated goes out.
Circular groove extends to the top edge of the formation one overflow seamed edge of housing.
Supplying pipe and one is positioned at the outer oil sources of active chamber and links to each other.Leaking oilyly inadequate the time, the active chamber of pneumatic spring can pass through an outside oil sources incoming oil and/or a mist of oil simply.In order to produce mist of oil, can dispose an oil mixing apparatus for the pressurized air compressed and supplied air duct that active chamber is set simply.
Another favourable measure can be, one is disposed at radially the gap in the hole of valve stem until it with the housing of seal arrangement overlap joint having that at least one is communicated with oil sump and guide above the seal ring of exhaust passage.Thus, can realize flooding reliably especially seal arrangement towards the exhaust passage.
According to another particularly advantageous design of prior measure, above-mentioned housing has a circular groove inside, that comprise oil sump above the seal ring of exhaust passage, and it can import oil by a supplying pipe.At this, obtain one have very compact oil sump, save the mode of structure in space especially, this oil sump can be full of by a relatively little oil mass.
Circular groove conforms with the top edges that the destination can extend to housing.Wherein, this top edges works as the overflow seamed edge, reaches the oil level of wishing in simple mode in oil sump thus.
When use is used to supply with the leakage oil of circular groove oil, configuration give its supplying pipe can be that in active chamber, form with one simply, link to each other with the collecting tank that overlaps below the drippage seamed edge.Wherein, active chamber self does not comprise the oil sump of any bottom side, and this provides the degrees of freedom of design aspect being provided with of safety valve.
The more favourable design of another of important measures can be that seal arrangement has the seal ring of two overlapping settings, and the annular gap zone that is provided with between these seal rings links to each other with an emptying pipe with a supplying pipe in order to constitute oil sump.This produces a special compact structure mode.Because oil sump here flows through all the time, supply with so still can produce reliable oil.
Seal arrangement have a cross section that is symmetrical in horizontal plane towards the seal ring of exhaust passage at least, described cross section has the import of both sides wedge shape and wide contact plane.
But by guide pin bushing and valve stem mutually towards the annular gap that limits of guide surface below the seal ring of exhaust passage by a supplying pipe air supply and/or a mist of oil.
The favourable structure of other of important measures and conform with the purpose expansion structure more in following explanation, and can from following example explanation, further draw by accompanying drawing.
Description of drawings
Below in Shuo Ming the accompanying drawing:
Fig. 1 illustrates the first embodiment of the present invention by means of vertical sectional view, and it is by the upper area of the cylinder with a discharge valve apparatus that sets of a two-stroke large diesel engine;
Fig. 2 is by means of illustrating the second embodiment of the present invention from the partial view with the corresponding vertical sectional view intercepting of Fig. 1, and this partial view comprises the upper end zone of the guide pin bushing that is equipped on valve stem;
Fig. 3 is illustrated in the third embodiment of the present invention of respective description among Fig. 2;
Fig. 4 is illustrated in the radial cross-section of a seal ring of the seal arrangement that is provided with in the guide pin bushing upper end zone.
Embodiment
Main application fields of the present invention is two-stroke large diesel engine such as its use on marine drive.The structure of this type of device and action principle itself is known.
This motor has the cylinder 1 that a plurality of arrangements arranged side by side are provided with usually.In Fig. 1, the upper area of this type of cylinder 1 is shown.It comprises one in Fig. 1 unshowned cylinder liner and suit cylinder head 2 thereon.In cylinder, a firing chamber 3 is arranged, it is provided with the coaxial relief opening 4 on a top, and it can be by an outlet valve that sets 5 controls.
Valve stem 7 passes guide pin bushing 10 and stretches into the structure 12 that is contained on the valve pocket 9 with its part that surpasses guide pin bushing 10, and it comprises the operation equipment that is used to implement to open and close motion of a configuration supply and exhaust valve 5.Operation equipment comprises that an advancing means and that is designed to the hydraulic pressure unit is designed to the resetting means of pneumatic spring.Structure 12 has the shell of two-part, and its top part 12a comprises the hydraulic pressure unit that constitutes advancing means, and its underpart part 12b comprises the pneumatic spring that constitutes resetting means.
The hydraulic pressure unit of described formation advancing means comprise one be placed in valve stem 7 upper end portions piston 13 and one by its restriction, be arranged on the pressure chamber 14 among the part 12a of top, it is designed to and can imports the hydraulic oil with a high pressure by stroke by the pressure source of the pump of motor driven by a destination that conforms with not shown further.The pneumatic spring that plays a role as resetting means that is arranged on hydraulic pressure unit below comprises a piston fixed thereon 15 that is passed by valve stem 7, the active chamber 17 that this restriction one is surrounded by a wheel rim that forms on the part 12b of bottom, this active chamber can import pressurized air by a compressed air hose that links to each other with source of compressed air 18.In order to reduce the superpressure in the active chamber 17, it is provided with an outlet, this outlet configuration one adjustable safety valve 19, and it is opened under the pressure of setting.
Can import compressed-air actuated active chamber 17 towards valve stem 7 and guide pin bushing 10 mutually towards guide surface between annular gap 11 by a seal arrangement sealing that comprises at least one seal ring 22.Seal arrangement can be designed to comprise the filler cover of at least one seal ring 22.Press the mode of execution of Fig. 1 and Fig. 2, be provided with a seal ring 22.Press the enforcement of Fig. 3, be provided with the seal ring 22,23 of overlapping setting.
Since between valve stem 7 and the guide pin bushing 10 mutually towards guide surface between annular gap 11 open to the exhaust passage, so there is such danger, be that combustion residue enters annular gap 11, the seal ring 22 that they can cause damaging guide surface, particularly damage the below is 8 the seal ring 22 towards the exhaust passage of seal arrangement.In order to stop it, give annular gap 11 incoming oils from the top.Oil can flow into the exhaust passage 8 that can burn in the underpart of seal ring 11.
In order to give annular gap 11 incoming oils, above the seal ring 22 of seal arrangement, be provided with one can incoming oil oil sump 24, its extending oil of upside that is positioned at the annular gap dorsad 11 of above-mentioned seal ring 22 floods seal ring, and is used as the oil sources of giving annular gap incoming oil and lubrication and seal circle 22 from the top.
Pressing on the mode of execution of Fig. 1, at first the oil that leaks from the pressure chamber 14 of hydraulic pressure unit is used to infeed oil sump 24.Same situation also is fit to Fig. 2.As mentioned above, above-mentioned leakage oil droplet is gone into the upside that gap 20 also reaches the piston 15 of air spring assembly at least in part.From here, leak oil and in the piston area zone of circumference side, enter in the active chamber 17, there, it can be assembled in the bottom side and form oil sump 24, as shown in Figure 1.
Usually, the abundant leakage oil that runs off from the hydraulic pressure unit enters pressure chamber 17, so that guarantee the supply of the abundance of oil sump 24.If situation is not like this, extra oil can be imported in the pressure chamber 17 certainly.This illustrates by a supplying pipe 25 that 17 lower areas feed in the pressure chamber in Fig. 1.Supplying pipe 25 can dispose an outside oil sources.But also possible is, the oil by supplying pipe 25 guidings is shunted from the oil that the pressure chamber 14 of hydraulic pressure unit imports simply.Can replace or infeed mist of oil additionally also can for working room 17.For this reason, compressed air hose 18 configurations one oil mixing apparatus 26.The oil that separates from pressurized air sprays into working room 17 with the form of mist of oil.Mist of oil drops on the wall and is dropped into oil sump.
If piston 15 moves down, in working room 17, exist, compressed air further is compressed.Oil level is high more in oil sump 24, and air is compressed by force more.From certain pressure, safety valve 19 is opened.Therefore, the oil level in the oil sump 24 can remain on the height of wishing by safety valve 19 corresponding adjustings.As mentioned above, the flow path of safety valve 19 controls one from oil sump to a return tube 21 guidings.
On the embodiment shown in Fig. 1, give safety valve 19 configurations one spill pipe 27 that stretches in the oil sump 24, its upper end portion constitutes an overflow seamed edge and correspondingly stipulates the height of oil level in the oil sump 24 therewith.Safety valve 19 can not considered to be adjusted to a fixation pressure under the oil level situation of oil sump 24 in this mode of execution, and this has simplified setting.Yet, in oil sump 24, obtain a constant oil level.Natural by the overflow seamed edge that spill pipe 27 upper end portions constitute than seal ring 22 height, make seal ring be flooded by oil reliably.
The guide pin bushing 10 that holds seal ring 22 is bearing on the valve pocket 9 with a upper rim portion 10a.Seal ring 22 inserts flange 10a one upwards in the open ring groove, and this flange is by a cover 28 overlap joints.This covers on one and is positioned at the pasta below of oil sump 24 and the zone above seal ring 22 and is provided with radially path clearance 29, these path clearances correspondingly direct into the part that is positioned at seal ring 22 tops of annular gap 11 therewith from oil sump 24, more help thus flooding seal ring 22 with oil.Gap 29 radially can be designed to hole or milling portion etc.
In the embodiment of foundation Fig. 2, the hole that is penetrated by valve stem 7 of above-mentioned housing 28 has radially bigger size than the diameter of valve stem 7, obtain the circular groove 31 of an encirclement valve stem 7, it can hold one by oil sump 32, and this oil sump can import oil by a supplying pipe 33 that is connected with circular groove 31.Supplying pipe 33 can link to each other with outside oil sources etc. as the supplying pipe 25 of the enforcement of Fig. 1.In an illustrated embodiment, leak oil and be used to infeed oil sump 32 as mentioned above once more.
The leakage oil droplet that enters active chamber 17 in piston 15 guide surface zones drops on the lower limb of the cylindrical rolling surface that disposes to piston 15.This drippage seamed edge 34 is here surrounded from the below by a collecting tank 35, draws supplying pipe 33 from collecting tank.Comprise that the circular groove 31 of oil sump 32 extends to the upside of housing 28, its upside correspondingly constitutes an overflow seamed edge therewith, guarantees in oil sump a constant oil level by its.The oil of overflow enters the bottom section of active chamber 17, draws the flow path by safety valve 19 controls therefrom, can be derived by the oil that this path is unnecessary.Safety valve 19 can not considered to regulate under the oil level situation in the oil sump 32 at this, and this has simplified setting.Do not need a spill pipe that was provided with before safety valve 19 in this embodiment, this reason for the space is preferred in many-side.
In the enforcement of pressing Fig. 3, as mentioned above, the seal ring 22,23 of two liftoff overlapping settings of spacer is set.Give the part incoming oil that limits by these two seal rings 22,23 of annular gap 11, so that constitute an oil sump 36.In the embodiment shown, oil is supplied with continuous in service the carrying out of intermittent load.Described annular gap part correspondingly is connected with an emptying pipe 38 with a supplying pipe 37 therewith.Supplying pipe 37 can be connected with the oil sources of an outside.Emptying pipe 38 can link to each other with a return tube that does not have pressure.In this embodiment, towards the exhaust passage 8 seal ring, here be that below seal ring 22 is that the below seal ring of seal arrangement is also certainly flooded by oil, give annular gap 11 incoming oil reliably thus.The coercively fed of oil sump 36 obtains an extra high reliability.
Usually, importing the oil that enters by seal ring 22 for annular gap 11 stops combustion residue to enter in the annular gap 11 reliably.In order to support this effect, import pressurized air extraly can for annular gap 11, it conforms with the destination and imports below seal ring 22, as being positioned pipe 39 below the seal ring 22, that guide to annular gap 11 illustrates by one among Fig. 1.What can imagine equally is, by this type of a pipe mist of oil and/or extra oil is imported.
Oil mass by annular gap 11 can be less relatively, and reach one liter of about every day on a two-stroke large diesel engine.The oil that leaks from the hydraulic pressure unit is approximately 10 liters of every days at this type of motor, therefore can easily satisfy the oil consumption that is used to supply with annular gap 11.
Oil imports annular gap 11 to carry out on the seal ring side, and the influence of hard to bear its physical dimension of energy.Starting point at this is, produces a hydrokinetic lubricant film between seal ring 22 and valve stem 7, and its thickness is at the physical dimension that depends on seal ring 22 basically and other fixing predetermined parameter relative velocity for example.The one wedge shape import in the gap between the face of relative movement helps the formation of a lubricant film.The width of the supporting surface that links to each other with import also influences the thickness of lubricant film.
On the embodiment of foundation Fig. 4, seal ring 22 has the cross section of one and one horizontal symmetrical in the face of claiming, it has the import 41 and a wide supporting surface 40 of both sides wedge shape.The wedge shape of import has a relatively large angle of wedge.Supporting surface 40 is wide and the whole height of extend through seal ring 22 almost.By this physical dimension of seal ring 22, on a two-stroke large diesel engine, can realize the oil infiltration of the above-mentioned order of magnitude.
Claims (16)
1. two-stroke large diesel engine, comprise at least one cylinder (1), the firing chamber of this cylinder (3) has a relief opening (4), this relief opening can be controlled by the outlet valve (5) of operation equipment operation by one, described operation equipment comprises an advancing means and a resetting means, cylinder head (2) at described cylinder is gone up suit one valve pocket (9), this valve pocket comprises that an exhaust passage (8) and that links to each other with the relief opening (4) of firing chamber (3) passes the guide pin bushing (10) of its upper wall, this guide pin bushing is used for the valve stem (7) that one of outlet valve (5) passes exhaust passage (8), wherein resetting means has one and is installed in that piston (15) and on the valve stem (7) limits by piston, can infeed compressed-air actuated active chamber (17), this active chamber with respect to guide pin bushing (10) and valve stem (7) mutually towards guide surface between exist, the annular gap (11) that is communicated with exhaust passage (8) by one the top of annular gap (11) away from the zone of the end of exhaust passage in setting, seal arrangement sealing with at least one seal ring (22), but described annular gap incoming oil, it is characterized in that, seal arrangement towards the exhaust passage (8) seal ring (22) but the top is provided with the oil sump (24 of an incoming oil, 32,36), the extending oil of described oil sump is located at seal arrangement that the upper end portion of annular gap is provided with, towards the seal ring (22) of exhaust passage, the upside of exhaust passage (8) dorsad, and extending oil floods described seal ring (22), so that give the annular gap incoming oil constantly from the top.
2. by the described two-stroke large diesel engine of claim 1, it is characterized in that, the power that overcomes resetting means by an advancing means that acts on the hydraulic pressure on the described valve stem (7) of outlet valve can place open position with outlet valve (5), and supplies with the leakage oil that flows out can at least in part oil sump (24,32) from the operation equipment of hydraulic pressure.
3. by claim 1 or 2 described two-stroke large diesel engines, it is characterized in that the oil level in oil sump (24,32) limits by an overflow seamed edge.
4. by claim 1 or 2 described two-stroke large diesel engines, it is characterized in that, resetting means is arranged on the operation equipment below of hydraulic pressure, and this resetting means is pneumatic resetting means, the active chamber of this pneumatic resetting means (17), with the opposed bottom section of piston (15) comprise oil sump (24), and can be by a safety valve (19) unloading, this safety valve is arranged on one from the return tube (21) that oil sump (24) bifurcated goes out.
5. by the described two-stroke large diesel engine of claim 4, it is characterized in that at safety valve (19) spill pipe (27) that stretches into oil sump (24) is set before, the location, upper end portion of the formation overflow seamed edge of this spill pipe is higher than the seal ring (22) that is flooded by oil.
6. by claim 1 or 2 described two-stroke large diesel engines, it is characterized in that, active chamber (17) can be at least in part by a supplying pipe that sets (25) from outside incoming oil.
7. by claim 1 or 2 described two-stroke large diesel engines, it is characterized in that active chamber (17) can infeed mist of oil by a supplying pipe that sets (25) at least in part.
8. by the described two-stroke large diesel engine of claim 7, it is characterized in that active chamber (17) can be supplied with pressurized air by a compressed air hose (18), and sets an oil mixing apparatus (26) for compressed air hose (18).
9. by claim 1 or 2 described two-stroke large diesel engines, it is characterized in that, guide pin bushing (10) be provided with one with the housing (28) of seal arrangement overlap joint, the radial clearance (29) that the seal ring that this housing floods at oil (22) top has is that at least one is communicated with oil sump (24), guide towards the hole of being passed by valve stem (7) of housing.
10. by aforesaid right requirement 1 or 2 described two-stroke large diesel engines, it is characterized in that, guide pin bushing (10) be provided with one with the housing (28) of seal arrangement overlap joint, the seal ring that this housing floods at oil (22) top has circular groove (a 31) inside, that comprise oil sump (32), and this circular groove can pass through a supplying pipe (33) incoming oil.
11. by the described two-stroke large diesel engine of claim 10, it is characterized in that, the pneumatic spring that resetting means is designed to be provided with below apply device, this pneumatic spring have described be installed on the valve stem (7) piston (15) and described that limit by piston, can infeed compressed-air actuated active chamber (17), in this active chamber, constitute the oil droplet seamed edge (34) that falls, this oil droplet seamed edge that falls is surrounded from the below by a collecting tank (35), goes out supplying pipe (33) from this collecting tank bifurcated.
12., it is characterized in that circular groove (31) extends to the top edge of the formation one overflow seamed edge of housing (28) by the described two-stroke large diesel engine of claim 10.
13. by the described two-stroke large diesel engine of claim 10, it is characterized in that, seal arrangement has the seal ring (22,23) of overlapping setting, and the annular gap zone that is used to form an oil sump (36) that is provided with between these seal rings (22,23) links to each other with an emptying pipe (38) with a supplying pipe (37).
14., it is characterized in that supplying pipe (37) and is positioned at the outer oil sources of active chamber (17) and links to each other by the described two-stroke large diesel engine of claim 13.
15. by claim 1 or 2 described two-stroke large diesel engines, it is characterized in that, seal arrangement the seal ring of (8) (22) has a cross section that is symmetrical in horizontal plane towards the exhaust passage at least, described cross section has the import (41) of both sides wedge shape and wide contact plane (40).
16. by claim 1 or 2 described two-stroke large diesel engines, it is characterized in that, by guide pin bushing (10) and valve stem (7) mutually towards the annular gap (11) that limits of guide surface towards the exhaust passage seal ring (22) below of (8) pass through a supplying pipe (39) but air supply and/or mist of oil.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2005/012019 WO2007054109A1 (en) | 2005-11-10 | 2005-11-10 | Two-stroke large diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101268256A CN101268256A (en) | 2008-09-17 |
| CN101268256B true CN101268256B (en) | 2011-03-16 |
Family
ID=36782610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200580047596XA Active CN101268256B (en) | 2005-11-10 | 2005-11-10 | Two-stroke large diesel engine |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP1828555B1 (en) |
| CN (1) | CN101268256B (en) |
| AT (1) | ATE403069T1 (en) |
| DE (1) | DE502005004913D1 (en) |
| DK (1) | DK1828555T3 (en) |
| ES (1) | ES2314729T3 (en) |
| HK (1) | HK1121794A1 (en) |
| NO (1) | NO338690B1 (en) |
| PL (1) | PL1828555T3 (en) |
| WO (1) | WO2007054109A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979841A (en) * | 2010-10-15 | 2011-02-23 | 靳北彪 | Superposed air valve mechanism |
| SE540409C2 (en) * | 2013-10-16 | 2018-09-11 | Freevalve Ab | Combustion engine and cover composition therefore |
| CN105909334A (en) * | 2016-06-23 | 2016-08-31 | 上海中船三井造船柴油机有限公司 | Diesel engine vent valve with forced opening function |
| DE102016222280A1 (en) * | 2016-11-14 | 2018-05-17 | Man Diesel & Turbo Se | Gas exchange valve for an internal combustion engine and internal combustion engine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0396327A1 (en) * | 1989-04-26 | 1990-11-07 | Honda Giken Kogyo Kabushiki Kaisha | Valve operating system of internal combustion engine |
| EP0536513A1 (en) * | 1991-08-21 | 1993-04-14 | Honda Giken Kogyo Kabushiki Kaisha | Valve operating system for internal combustion engine |
| CN1424492A (en) * | 2001-12-14 | 2003-06-18 | 曼B与W狄赛尔公司 | Reciprocating engines |
| DE4220689C2 (en) * | 1991-06-27 | 2003-06-26 | Man B & W Diesel As Kopenhagen | Air purge system in an internal combustion engine |
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2005
- 2005-11-10 AT AT05806781T patent/ATE403069T1/en not_active IP Right Cessation
- 2005-11-10 DK DK05806781T patent/DK1828555T3/en active
- 2005-11-10 ES ES05806781T patent/ES2314729T3/en active Active
- 2005-11-10 WO PCT/EP2005/012019 patent/WO2007054109A1/en active IP Right Grant
- 2005-11-10 DE DE502005004913T patent/DE502005004913D1/en active Active
- 2005-11-10 CN CN200580047596XA patent/CN101268256B/en active Active
- 2005-11-10 EP EP05806781A patent/EP1828555B1/en active Active
- 2005-11-10 PL PL05806781T patent/PL1828555T3/en unknown
-
2007
- 2007-06-25 NO NO20073258A patent/NO338690B1/en unknown
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2008
- 2008-12-04 HK HK08113207.4A patent/HK1121794A1/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0396327A1 (en) * | 1989-04-26 | 1990-11-07 | Honda Giken Kogyo Kabushiki Kaisha | Valve operating system of internal combustion engine |
| DE4220689C2 (en) * | 1991-06-27 | 2003-06-26 | Man B & W Diesel As Kopenhagen | Air purge system in an internal combustion engine |
| EP0536513A1 (en) * | 1991-08-21 | 1993-04-14 | Honda Giken Kogyo Kabushiki Kaisha | Valve operating system for internal combustion engine |
| CN1424492A (en) * | 2001-12-14 | 2003-06-18 | 曼B与W狄赛尔公司 | Reciprocating engines |
Non-Patent Citations (1)
| Title |
|---|
| DE 4220689 C2,说明书第3栏第48行至第第6栏第7行、附图1,5. |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE403069T1 (en) | 2008-08-15 |
| PL1828555T3 (en) | 2009-01-30 |
| ES2314729T3 (en) | 2009-03-16 |
| HK1121794A1 (en) | 2009-04-30 |
| NO20073258L (en) | 2008-08-08 |
| EP1828555B1 (en) | 2008-07-30 |
| WO2007054109A1 (en) | 2007-05-18 |
| DE502005004913D1 (en) | 2008-09-11 |
| DK1828555T3 (en) | 2008-12-01 |
| EP1828555A1 (en) | 2007-09-05 |
| NO338690B1 (en) | 2016-10-03 |
| CN101268256A (en) | 2008-09-17 |
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