CN101718214A - A method for the lubrication of a large diesel engine as well as a large diesel engine - Google Patents
A method for the lubrication of a large diesel engine as well as a large diesel engine Download PDFInfo
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- CN101718214A CN101718214A CN200910204714A CN200910204714A CN101718214A CN 101718214 A CN101718214 A CN 101718214A CN 200910204714 A CN200910204714 A CN 200910204714A CN 200910204714 A CN200910204714 A CN 200910204714A CN 101718214 A CN101718214 A CN 101718214A
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- oiling agent
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- lubricant
- contaminated
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- 238000005461 lubrication Methods 0.000 title abstract description 36
- 239000000314 lubricant Substances 0.000 claims abstract description 100
- 238000002485 combustion reaction Methods 0.000 claims abstract description 38
- 238000004140 cleaning Methods 0.000 claims abstract description 24
- 239000008041 oiling agent Substances 0.000 claims description 134
- 239000000654 additive Substances 0.000 claims description 10
- 230000000996 additive effect Effects 0.000 claims description 9
- 230000001050 lubricating effect Effects 0.000 claims description 6
- 239000003921 oil Substances 0.000 description 17
- 238000001816 cooling Methods 0.000 description 11
- 235000013305 food Nutrition 0.000 description 9
- 230000002349 favourable effect Effects 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 238000003860 storage Methods 0.000 description 6
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 4
- 230000008859 change Effects 0.000 description 4
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
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- 238000005260 corrosion Methods 0.000 description 1
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- 239000010727 cylinder oil Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003879 lubricant additive Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/02—Arrangements of lubricant conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/08—Lubricating systems characterised by the provision therein of lubricant jetting means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
- F01M9/02—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00 having means for introducing additives to lubricant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/08—Lubricating systems characterised by the provision therein of lubricant jetting means
- F01M2001/083—Lubricating systems characterised by the provision therein of lubricant jetting means for lubricating cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/02—Arrangements of lubricant conduits
- F01M2011/022—Arrangements of lubricant conduits for lubricating cylinders
Abstract
The invention relates to a method for the lubrication of a large diesel engine as well as a large diesel engine. The method involves providing a cylinder (2) in a cylinder block (3), where the cylinder includes a piston (5) which reciprocates on an operation surface (21) in the cylinder (2). The piston (5) limits a combustion chamber (6) and is connected to a crankshaft (10) in a crankcase (4). Lubricant is introduced from a lubricant source (62) arranged in the cylinder for lubrication of the piston (5), where the lubricant is contaminated by a combustion process taken place in the chamber (6). The contaminated lubricant is discharged from the cylinder (20), before the contaminated lubricant is reached into the crankcase (5). A cleaning device (60) is provided to purify the contaminated lubricant. An independent claim is also included for a large diesel engine.
Description
Technical field
The present invention relates to the method and this large-sized diesel motor that are used for lubricated large-sized diesel motor according to the preamble of the independent claims of respective type.
Background technique
The large-sized diesel motor that may be made in two stroke engine or four stroke engine for example, is used to drive big-block engine and produces electric energy usually as the driver element of ship or also use in fixed operation.In this regard, motor turns round with sizable time span in continuous operation mode usually, and this just makes needs higher job security and operational availability.Therefore, especially the use of the economy of long-time maintenance rate, less wearing and tearing and work fuel becomes main standard for operator.
In this regard, given piston lubrication important meaning.In working order, piston is continued to use the cylinder inner wall slippage of doing the operation surface, and wherein, cylinder is made for the shape of cylinder operation sleeve (bush) usually.On the one hand, piston must be as far as possible easily (that is, and slippage in cylinder without barrier), and on the other hand, piston must seal the combustion space in the cylinder, and the energy efficient of guaranteeing during combustion process as far as possible to be discharged converts mechanical work to.
For that reason,, usually lubricant oil is introduced the good roadability that realizes piston in the cylinder, and keep cylinder wall, piston and the as far as possible little wearing and tearing of piston ring at the diesel engine duration of work.In addition, during lubricant oil is used for and the erodibility products of combustion, and be used for anticorrosion.Because these numerous requirements, so as the very high and comparatively expensive material of the normally grade of lubricant oil.
At present, use the independent lubrication system of two covers to be used to large-sized two-stroke diesel engine usually with the crosshead transmission.One cover lubrication system comprises so-called system oil or system lubricant, and it is generally used for lubricated all bearings or axle journal, as the main bearing of crankshaft, the main bearing of cross head bearing, the main bearing of crosshead etc., and through being usually used in (inside) cooling of piston.Another set of lubrication system comprises specialized gas cylinders oil or lubricant cylinder, and it is generally used for lube pistons, piston ring, and the operation surface.Lubricant cylinder only is article of consumption (" total losses "), promptly has been applied on operation surface or the piston and after having been polluted in the combustion space at it, just with residual collection and remove.Therefore, although each revolution of motor has all consumed cylinder oil continuously, in most of situations, system lubricant is not to be article of consumption, promptly it is cleaned and afterwards it is introduced in the lubricant source again.
Usually, have only a kind of oiling agent to be used to have the large-scale four-cycle diesel engine of connecting rod, wherein, this oiling agent not only is used for piston lubrication but also is used for bearing lubrication, and also is used for the internal piston cooling alternatively.For these machines, the oiling agent that pollutes because of combustion process faces down at the table of piston on inner cylinder wall usually and is subjected to piston when moving and promotes downwards, and drop onto in the food tray that is arranged on the crank outer casing bottom from the lower end of cylinder, wherein, this food tray can be used as lubricant source.Here, the highly polluted oiling agent that comes from the combustion space mixes mutually with another kind of oiling agent, and produces the extremely strong dilution of contaminated oiling agent because of the significant difference of volume.It also is known that the lubricant oil that comes from food tray is cleaned.
Summary of the invention
In view of large-sized diesel motor is more effectively done work, need be to lubricated improvement of two class motors (being two stroke engine and four stroke engine).
Therefore, one object of the present invention is to provide a kind of method that is used for lubricated large-sized diesel motor, and it needn't make efficient and the Economy that improves motor under any compromise situation to job security.Another object of the present invention is to provide a kind of large-sized diesel motor of correspondence.
Satisfy the theme of the present invention of these purposes of relevant process engineering and equipment aspect, its characteristics are the feature of the independent claims of respective type.
Therefore, according to the present invention proposes a kind of method that is used for lubricated large-sized diesel motor, this large-sized diesel motor has at least one cylinder in the cylinder group of being arranged on, has the piston that can move back and forth along the operation surface in the cylinder, this pistons delimit combustion space and being connected on the crankshaft that is arranged in the crank shell, wherein, oiling agent is introduced from lubricant source and is used for the lubricated of piston the cylinder, and this oiling agent is subjected to occurring in the pollution of the combustion process in the combustion space.Contaminated oiling agent deflected from cylinder before it can enter in the crank shell, and guided to the cleaning device that oiling agent is cleaned afterwards.
Contaminated oiling agent deflected from cylinder and before it can enter the crank shell measure for its cleaning be for lubricated its result of large-sized two-stroke diesel engine, the lubricant oil that comes from the combustion space is no longer regarded as waste product as known in the art, but can reuse by cleaning.From the viewpoint of Economy, this is a very big advantage.For large-scale four-cycle diesel engine lubricated, the method according to this invention is its result be, highly polluted oiling agent can be gone up with quilt before comparatively the oiling agent of cleaning mix mutually at crank shell bottom plate (floor) at it be deflected from cylinder.Yet, about cleaning, if contaminated oiling agent cleans and will at first mix mutually with the oiling agent that cleans and clean more effective afterwards such as the contaminated oiling agent of fruit with more concentrated form.Therefore, equally for four stroke engine, realized about lubricated significant performance boost.
Preferably, at the lower dead point position of last piston ring and the position between the border between cylinder group and crank shell contaminated oiling agent is being deflected from.Last piston ring is meant from the combustion space piston ring farthest.This last piston ring also can be made into scraper ring.Change sentence and speak, what this measure can be guaranteed is, collects the oiling agent that is derived from combustion space or operation surface as much as possible, and prevents from effectively to mix with the oil phase that exists in the crank shell.
Particularly, structure viewpoint from the two stroke engine design, particularly advantageous is if contaminated oiling agent is located to deflect from stuffing box (stuffing box), and especially directly be arranged at stuffing box between cylinder group and the crank shell above.
Given favourable measure be, the oiling agent that has cleaned is directed in the lubricant source, so as in lubricant circuit guide lubricant.Especially for two stroke engine, therefore the oiling agent that is used for piston lubrication and/or cylinder lubrication no longer is the article of consumption that just must remove after it uses, but after cleaning, can introduce again in the lubricant source, maybe can cause other position of lubricant circuit.This might significantly reduce the lubricating requirement of motor, for example reduces by 300% or more by this oiling agent that comes from inner cylinder space is circulated once more.Simultaneously, can increase the lubrication rates (lubrication rate) and/or the amounts of lubrication that in the unit time, are applied on operation surface or the piston, to realize even better to lubricate.Although lubrication rates improves, can greatly reduce total lubricating requirement by feeding back the oiling agent that has cleaned, this also is the remarkable advantage of Economy aspect.
Particularly for four stroke engine, clean highly polluted oiling agent and cause lubricated the aging of total amount to slow down, for lubricated change interval and/or recharge at interval and can greatly prolong, and cause that oiling agent still less removes as waste product.
Particularly advantageous is that the method according to this invention also makes for two stroke engine, might only provide a kind of oiling agent to be used for lube pistons, and also can be used for lubricated axle journal or bearing at least and/or be used for cooling piston.Therefore, just no longer need to have the known in the art lubricated of the independent lubricant system of two covers, this also causes having reduced working strength and/or cost for equipment.
Given favourable measure be monitoring viscosity of oiling agent and/or BN (base number) value.Therefore, can recognize when these values exceed or be lower than the critical value of allowing.At such situation, can take adequate measures then.
Advantageously, during operation, there is the fresh lubricant feed to give lubricant circuit.On the one hand, can replace burning thus or leak the oiling agent that is lost, on the other hand, some characteristics of oiling agent as its viscosity or BN value, can be arranged to appropriate value by adding fresh lubricant.
In this regard, favourable measure is, gives lubricant circuit with the fresh lubricant feed, make its first introduce cylinder before cooling piston at first.In other words, fresh lubricant can be introduced in the lubricant circuit as far as possible effectively.
Preferably, give oiling agent with the additive feed.For example, can come systematically and controllably to change the BN value or the chemical property of oiling agent by adding pure additive.
In order to realize to being positioned at the special effective collection of oiling agent on the table face and/or striking off, may be comparatively favourable if come to strike off oiling agent from the operation surface of cylinder by the scraper ring that is arranged on the piston place.
In addition, according to the present invention, a kind of large-sized diesel motor with at least one cylinder in the cylinder group of being arranged on has been proposed, wherein, piston can move back and forth along the operation surface in the cylinder, this pistons delimit combustion space, and be connected on the crankshaft that is arranged in the crank shell, wherein, lubricated inlet causes cylinder so that lube pistons with oiling agent from lubricant source, oiling agent is polluted because of the combustion process that occurs in the combustion space, and outlet is arranged for contaminated oiling agent, and be provided with and be adjusted to and make contaminated oiling agent before it enters in the crank shell, to deflect from cylinder, but also provide the cleaning device that is connected in the outlet to be used for contaminated oiling agent.
About also being used for according to large-sized diesel motor of the present invention on the same meaning of being set out in of the method according to this invention, this large-sized diesel motor may be made in two stroke engine and also may be made in four stroke engine.
For the reason of having illustrated, please be connected on the lubricant source by clean device, so that lubricant circuit is provided.
The outlet that is used for contaminated oiling agent is preferably and is arranged in the lower dead centre of last piston ring and the position between the border between cylinder group and crank shell.
For large-sized diesel motor according to the present invention, especially for two stroke engine, the outlet that is used for contaminated oiling agent also is preferably and is arranged in the stuffing box place that is arranged between cylinder group and the crank shell.
Especially for large-scale four-cycle diesel engine, it is for example comparatively favourable when collection channel or groove that the gathering-device that is used for oiling agent is arranged on the cylinder lower end.
Other favourable measure of the present invention and preferred embodiment are produced by dependent claims.
Description of drawings
Hereinafter, with reference to embodiment and accompanying drawing from the equipment aspect and the process engineering aspect set forth the present invention in more detail.And the sketch (partly with the cross section) of not drawn on scale in illustrated:
Fig. 1: according to first embodiment who is made for the large-sized diesel motor of two stroke engine of the present invention,
Fig. 2: according to second embodiment who is made for the large-sized diesel motor of four stroke engine of the present invention,
Fig. 3: be used for the embodiment of the gathering-device of oiling agent, and
Fig. 4: another embodiment of gathering-device.
Embodiment
With the local sketch of sectional view, Fig. 1 shows the large-sized diesel motor according to the first embodiment of the present invention, and it is represented with reference number 1 generally, and carries out therein according to lubricating method of the present invention.
This large-sized diesel motor 1 is made for the two-stroke cross head large-sized diesel motor with longitudinally scavenged slow running.
Large-sized diesel motor 1 generally includes a plurality of cylinders 2, only can see in a plurality of cylinders 2 among Fig. 1.Cylinder 2 is arranged in the cylinder group 3, and this cylinder group 3 is positioned at the top of crank shell 4.Piston 5 is arranged to and can moves back and forth in each cylinder 2, and piston moves along the operation surface 21 at cylinder 2 inwall places in working order.Usually, operation surface 21 is formed by cylinder inner matter (inset) or lining.According to diagrammatic sketch, piston 5 locates to be defined in the combustion space 6 that combustion process wherein takes place in the top, and piston has unshowned a plurality of piston rings among Fig. 1 usually.Piston 5 is connected on the crosshead 8 via piston rod 7, and crosshead 8 is connected on the crankshaft 10 that is arranged in the crank shell 4 via push rod 9 again then.
For the guiding from cylinder group 3 to crank shell 4, to provide the stuffing box 34 that centers on piston rod with regard to known manner originally via piston rod.
At the large-sized diesel motor duration of work, with regard to known manner oiling agent was applied to operation surface 21 originally, wear and tear as small as possible with good roadability and maintenance cylinder wall, piston 5 and the piston ring of realizing piston in this oiling agent lube pistons 5, piston ring and operation surface.In addition, during lubricant oil is used as and the erodibility products of combustion, and be used for anticorrosion, for example sulfur corrosion.Oiling agent can pass cylinder 2 walls and/or pass piston 5 inside and be applied on the operation surface 21.Original known all lubricating methods, as pulse lubricated or gathering lubricated (random lubricated), all be applicable to this purpose.All known media, as be generally used for the lubricant oil of large-sized diesel motor, all be suitable for use as oiling agent.
Oiling agent because of the combustion process in the combustion space 6 and mechanical wear be subjected to highly polluted, for example residue of combustion, wear particle, abrasion particulate or compound, these because of in and the erodibility products of combustion produce.
When the piston 5 according to diagrammatic sketch moves downward, strike off lubricant oil by piston 5 and/or piston ring from moving surface 21, and it is collected in the place, bottom of the cylinder group 3 in stuffing box 34 zones.Usually, provide chamfering 35 at this place, oiling agent can flow out by outlet 36 via this chamfering 35.According to prior art, this highly polluted oiling agent is removed, because it no longer can be used for other application.
According to the present invention, proposed now contaminated oiling agent was deflected from cylinder 2 before it can enter in the crank shell, (as shown in arrow 40) is fed in the cleaning device 60 and at this it cleaned afterwards.
Be unexpectedly, shown that the highly polluted oiling agent that comes from the combustion space can be cleaned well, cause it to can be used for other application.This is a very significant advantage of Economy aspect.
Preferably, the oiling agent (as by shown in the arrow 41) that has cleaned is fed in the lubricant source 62, oiling agent also is to take from this lubricant source 62 at first.Lubricant source 62 also is connected on the food tray 66 via connecting line (arrow 45), and this food tray 66 is arranged on the base portion of crank shell 4, makes the oiling agent that is collected in this place to arrive lubricant source 62 from food tray 66.Like this, just obtained lubricant circuit, wherein, oiling agent takes out from lubricant source 62, it is applied to lube pistons (symbolically being illustrated by the arrow among Fig. 1 42) on the cylinder operation surface 21, strikes off from moving surface 21 when it moves downward according to diagrammatic sketch by piston 5 then, arrive cleaning device 60 via outlet 36 (arrows 40), cleaned at this place, feed is given lubricant source 62 again then.The oiling agent that comes from lubricated (for example, it is lubricated to come from cross lubrication or axle journal) in the crank shell is collected in the food tray 66, and can arrive source of lubrication 62 via link (arrow 45) then.
Therefore, for the two-stroke embodiment according to large-scale diesel engine of the present invention, the contaminated oiling agent that is derived from operation surface 21 just is not re-used as waste product and removes, but introduces in the lubricant circuit again with the form that has cleaned.This recirculation measure has realized the very big saving of oiling agent.For improvement is lubricated, even work as lubrication rates (promptly, be applied to lubricated amount on the operation surface 21 at time per unit or every stroke) when comparing known large-sized two-stroke diesel engine and being improved, also can reduce 300% or more for the lubricated consumption of cylinder lubrication.
As shown in fig. 1, buffer store 61 can be arranged between cylinder 2 outlets 36 and the cleaning device 60, with the contaminated oiling agent of temporary transient storage.
In addition, provide lubricant reservoir 63 and other storage 64, fresh lubricant can be introduced lubricant circuit (arrow 43) from lubricant reservoir 63.For example, be used for lubricant additive and can be stored in storage 64, when needs, this additive can be introduced (as shown in arrow 44) in the lubricant circuit, for example, and so that the BN value (base numerical value) of oiling agent is arranged to expected value.Other storage also can be arranged to certainly in order to other material is introduced in the lubricant circuit.
Optionally, in lubricant circuit, also be provided with monitoring cell 65, and can use it to monitor and/or control or analyze the character and/or the composition of oiling agent.For example, use monitoring cell can analyze the viscosity of oiling agent, as analyzing its chemical composition, temperature etc.The feed that monitoring cell can be for example regulated fresh lubricant, additive or other composition according to the measurement result that provides to it or input signal.
Show that this utilization will be derived from the method that the surperficial oiling agent of operation deflects from and cleans, and also might only be used for lube pistons and lubricated axle journal with a kind of oiling agent, and the piston that is used for cooling large-sized two-stroke diesel engine alternatively.At present normally used two cover lubricant systems (promptly have system lubricant lubrication system and with the lubrication system with lubricant cylinder of its isolation) be essential no longer just.Fig. 1 shows the embodiment of so a kind of large-sized two-stroke diesel engine, wherein, provides a previous cover lubrication system, and this lubrication system comprises that all positions that need to lubricate provide the lubricant circuit of identical oiling agent in large-sized diesel motor 1.In the non-exclusionism inventory, these positions are for example for operation surface 21 with have bearing, the crosshead journal of main bearing, the push rod 9 of piston 5, the crankshaft 10 of piston ring, the slideway and/or the sliding shoes of crosshead 8, and the piston rod axle journal.In addition, oiling agent also can adopt originally and come cooling piston with regard to known manner.For this purpose, oiling agent is introduced piston 5 inside as cold oil, and flow back to lubricant source 62 via food tray 66 from piston 5 inside alternatively.
When in large-sized two-stroke diesel engine, only using a kind of oiling agent, make compromise with respect to viscosity and BN value.For piston lubrication and/or cylinder lubrication, to the major requirement of oiling agent be its can in and erodibility products of combustion and cleaning ability (dirt-removing power) thereof, and for other system applies, the local extreme high pressure that oiling agent stood with and closing property of back mixing (demulsibility) then be very important, wherein, this anti-Combination for example is the separability of itself and water.Usually, the viscosity of oiling agent is by SAE number (SAE: expression american car engineering association).When in large-sized diesel motor 1, only using a kind of oiling agent, for example can use the oiling agent of SAE 40 and BN 40, maybe can use other oiling agent that is generally used for four stroke engine.
Yet, the method according to this invention or also might provide two covers independent lubricant system according to these embodiments of large-sized diesel motor of the present invention, especially in the situation of two stroke engine, promptly a cover is used for cylinder lubrication and/or is used for piston lubrication and the another set of system's lubricated (that is lubricated and piston cooling alternatively of axle journal) that is used for.Utilize this type of embodiment, the system that is used for cylinder lubrication can preferably be made for lubricant circuit then, wherein, strike off the oiling agent that pollutes by combustion process from the operation surface 21 of cylinder 2, it is derived cylinder 2, to its cleaning, then with its again feed give lubricant source, from lubricant source, oiling agent is applied to again on the operation surface 21 and is used for piston lubrication and cylinder lubrication.
As alternative or except that centrifuge, the chemically cleaning device also can be provided as and be used for oiling agent, for example, be used for selectively from oiling agent remove because of and the material that produced of erodibility products of combustion.For example, the sulfate ion that produces when being present in the calcium combination burning afterwards in the new oil forms calcium sulfate simultaneously, can remove once more when for example cleaning by precipitation reaction and filtration subsequently after this calcium sulfate.
Among the embodiment who is provided in Fig. 1, the lubricant circuit that is provided especially also can provide the fresh lubricant that comes from lubricant reservoir 63.Replaceable like this, on the one hand by the oiling agent that leaks, burns or other process is lost.On the other hand, by introducing fresh lubricant, can adopt controllable mode to change the character of oiling agent, for example its BN value.
It all is feasible substantially that fresh lubricant is fed on any position of lubricant circuit in the loop, produces high degree of flexibility thus.Therefore, particularly, maybe advantageously fresh lubricant is introduced in the lubricant circuit, made before the operation surface 21 that this oiling agent is applied to first cylinder at first cooling piston.In this case, give the pipeline that leads to the oil cooling pipe line that is arranged on piston 5 inside from lubricant source 62 with the fresh lubricant feed, so that the cooling performance that can utilize fresh lubricant to realize ideal.
The additive or the multiple additives that come from storage 64 also can be introduced any indefinite position in lubricant circuit.Particularly advantageous is when additive is introduced lubricant circuit, make additive before the operation surface 21 that oiling agent is applied to cylinder 2 directly and lubricant.
According to the application, can exist certainly some other be fit to or favourable positions, in these positions, the additive that will come from the fresh lubricant of lubricant reservoir 63 or come from storage 64 is introduced in the lubricant circuit.
To strike off efficient and therefore improve the total amount of recirculation in order to improve, advantageously except that piston ring, also scraper ring is being arranged on the piston 5, or last piston ring is formed scraper ring at the lubricated of surperficial 21 places of operation." at last " piston ring on the piston 5 means from the combustion space 6 farthest piston rings.Scraper ring is also guaranteed to upgrade oil film or lubricating film soon on operation surface 21, this be since basically all contaminated oil all strike off from moving surface 21.
By all these measures (for example, make the oiling agent that comes from operation surface 21 carry out recirculation, or efficient being struck off in increase), can significantly reduce the oiling agent consumption of large-sized diesel motor 1.Therefore, for example might the value of scope from 0.2g/kWh (gram/kilowatt-hour) to 0.6g/kWh will be reduced to according to the oiling agent consumption of the longitudinally scavenged large-sized two-stroke diesel engine 1 of Fig. 1 or lubrication oil consumption.Simultaneously, can use the lubrication rates of increase.
Certainly also might contaminated oiling agent be deflected from cylinder 2 in the position that is different from stuffing box 34.In order to ensure collecting contaminated oiling agent as far as possible efficiently, advantageously the position below the diagrammatic sketch according to Fig. 1 is positioned at the lower dead point position of last piston ring and/or be provided at scraper ring (if present) below the position contaminated oiling agent is deflected from.
It is also understood that also can be oiling agent provides more than one outlet 36, that is to say, also can contaminated oiling agent be deflected from cylinder 2 from two or more diverse locations.
As alternative or in addition, according to diagrammatic sketch, the outlet that is used for oiling agent also can be arranged on the lower end of stuffing box 34 or stuffing box 34.Therefore, also can collect the oiling agent that sticks on the piston rod 7 afterwards.
In addition, certainly also might be not with the oiling agent that comes from cleaning device 60 directly or fully feed give lubricant source 62, but it is introduced lubricant circuit at one or more diverse locations place.
Fig. 2 shows the sketch according to second embodiment of large-sized diesel motor 1 of the present invention, carries out the method according to this invention therein, and this large-sized diesel motor 1 is made for large-scale four-cycle diesel engine 1.Part with same or similar function provide with Fig. 1 in identical reference number.
With reference to the Fig. 1 and first embodiment given be described equally in a similar manner or be applied to second embodiment with identical implication.
For the large-scale four-cycle diesel engine 1 according to Fig. 2, piston 5 is via connecting rod 9 ' be directly connected on the crankshaft 10.The a plurality of piston rings 51 that are positioned at piston 5 places have been shown among Fig. 2, and last piston ring wherein (i.e. 6 farthest the piston rings from the combustion space) is made for scraper ring 52.
Upper end according to the combustion space 6 of diagrammatic sketch provides at least one inlet valve 68 and an outlet valve 69.
In the zone of cylinder 2 because connecting rod 9 ' structure make cylinder group 3 open wide towards crank shell 4, promptly be unlike in and have stuffing box in the two stroke engine like that.The food tray that is made for lubricant source 62 is positioned at the base portion of crank shell 4.
At work, by moving downward of piston 5 operation surface 21 and/or the cylinder buss of oiling agent from cylinder 2 struck off.
Prior art is: drop to the crank shell 4 from the lower boundary of cylinder 2 because of combustion process is subjected to highly polluted oiling agent, and mix mutually with the rest lubricant in the lubricant source 62.Because it is little than the oiling agent total amount to ignoring, so contaminated oiling agent obtains very strong dilution in lubricant source 62 from moving the surface 21 contaminated amounts of lubrication of striking off.
According to the present invention, prevented to splash into downwards the crank shell 4 from moving the surface 21 highly polluted oiling agents that strike off, this is because this contaminated oiling agent had deflected from cylinder before it can enter in the crank shell 4, and it is guided to cleaning device 60 afterwards.
For this purpose, collector unit 22 is arranged on the lower end of cylinder 2 in large-scale four-cycle diesel engine 1, and collect from moving the surface 21 contaminated oiling agents that strike off, make this oiling agent not enter in the crank shell 4 basically, and therefore can be without entering lubricant source 62 cleanly.
Two embodiments of collector unit 22 have been shown among Fig. 3 and Fig. 4.
In embodiment,, be provided with groove 221 along total circumference at the lower end of cylinder 2 or at lower end according to the cylinder buss of diagrammatic sketch according to Fig. 3, at its base portion, be provided with at least one exit opening 222, via this exit opening 222, contaminated oiling agent can enter in the outlet 36.
Among the another embodiment of gathering-device 22 shown in Figure 4, be provided with groove 223, its in the zone of cylinder 2 lower ends or cylinder buss lower end along total circumferential extension.Be collected in wherein from moving surface 21 oiling agents that strike off.Contaminated oiling agent flows into outlet 36 via unshowned exit opening among Fig. 4 from groove 223.Preferably, groove 223 is downward-sloping towards cylinder 2 outer walls, so that can collect oiling agent (as shown in Figure 4) better.
For large-scale four-cycle diesel engine, such embodiment also is feasible, and two independent lubricant circuit promptly are provided therein, and promptly one is used for cylinder lubrication and/or piston lubrication, and that another is used for axle journal is lubricated and be used for the piston cooling alternatively.
Should be appreciated that in the embodiment of Fig. 2, also is feasible at diverse location or a plurality of diverse locations place with the modification that contaminated oiling agent deflects from cylinder 2.Contaminated oiling agent preferably deflects from a position or a plurality of position between the border of 4 on the lower dead centre of last piston ring or scraper ring 52 and cylinder group 3 and crank shell.Only need prevent that in principle a large amount of contaminated lubricant oil from directly entering the source of lubrication from moving surface 21 via crank shell 4.
Since highly polluted oiling agent can its not with lubricant source 62 in the oiling agent situation of mixing mutually under deflect from cylinder 2, so contaminated oiling agent does not obtain dilution, and thereby can in cleaning device 60, obtain better and clean more efficiently.
Claims (15)
1. method that is used for lubricated large-sized diesel motor, described large-sized diesel motor has at least one cylinder (2) in cylinder group of being arranged on (3), have the piston (5) that can move back and forth along the operation surface (21) in the described cylinder (2), described piston (5) defines combustion space (6), and described piston (5) is connected on the crankshaft (10) that is arranged in the crank shell (4), wherein, for lubricated described piston (5), oiling agent is introduced the described cylinder (2) from lubricant source (62), wherein, described oiling agent is polluted because of the combustion process that occurs in the described combustion space (6), it is characterized in that, described contaminated oiling agent is deflected from described cylinder (2), and afterwards it is directed to cleaning device (60), locate at described cleaning device (60), before described oiling agent can enter in the described crank shell (4), described oiling agent is cleaned.
2. method according to claim 1 is characterized in that, the position between the border between the lower dead point position that is positioned at described last piston ring and described cylinder group (3) and described crank shell (4) deflects from described contaminated oiling agent.
3. according to any one described method in the aforementioned claim, it is characterized in that, locate described contaminated oiling agent is deflected from the stuffing box (34) that is arranged between described cylinder group (3) and the described crank shell (4).
4. according to any one described method in the aforementioned claim, it is characterized in that, the oiling agent that has cleaned is guided to described lubricant source (62), so that described oiling agent is directed in the lubricant circuit.
5. according to any one described method in the aforementioned claim, it is characterized in that, a kind of oiling agent only is provided, described oiling agent is used for lubricated described piston (5), and also is used for lubricating bearings or axle journal at least and/or is used to cool off described piston (5).
6. according to any one described method in the aforementioned claim, it is characterized in that, monitor the viscosity and/or BN (base number) value of described oiling agent.
7. according to aforementioned claim 4 any one described method to the claim 6, it is characterized in that, give described lubricant circuit the fresh lubricant feed.
8. method according to claim 7 is characterized in that, gives described lubricant circuit with described fresh lubricant feed, so that made it at first cool off described piston (5) before described fresh lubricant being introduced first in the described cylinder (2).
9. according to any one described method in the aforementioned claim, it is characterized in that, give described oiling agent the additive feed.
10. according to any one described method in the aforementioned claim, it is characterized in that,, described oiling agent is struck off from the operation surface (21) of described cylinder (2) by being arranged on the scraper ring (52) that described piston (5) is located.
11. large-sized diesel motor, it has at least one cylinder (2) in cylinder group of being arranged on (3), have the piston (5) that can move back and forth along the operation surface (21) in the described cylinder (2), described piston (5) boundary is decided combustion space (6) and is connected on the crankshaft (10) that is arranged in the crank shell (4), have and be used for oiling agent is fed to described cylinder (2) so that the lubricated inlet (42) of lubricated described piston (5) from lubricant source (62), wherein, described oiling agent is polluted because of the combustion process that takes place in described combustion space (6), it is characterized in that, provide outlet (36) for described contaminated oiling agent, described outlet is arranged and is adjusted to and makes described contaminated oiling agent can deflect from described cylinder (2) before it can enter in the described crank shell (4), and also providing cleaning device (60) for described contaminated oiling agent, described cleaning device (60) is connected in the described outlet (36).
12. large-sized diesel motor according to claim 11 is characterized in that, described cleaning device (60) is connected on the described lubricant source (62), so that lubricant circuit is provided.
13. according to any one described large-sized diesel motor in claim 11 or the claim 12, it is characterized in that the described outlet (36) that is used for described contaminated oiling agent is arranged in the lower dead point position that is positioned at described last piston ring and the position between the border between described cylinder group (3) and described crank shell (4).
14. according to claim 11 any one described large-sized diesel motor to the claim 13, it is characterized in that the described outlet (36) that is used for described contaminated oiling agent is arranged in the stuffing box (34) that is provided between described cylinder group (3) and the described crank shell (4).
15., it is characterized in that the gathering-device (22) that is used for described oiling agent is arranged on the lower end of described cylinder (2) according to claim 11 any one described large-sized diesel motor to the claim 14.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP08166055.7 | 2008-10-08 | ||
| EP08166055 | 2008-10-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101718214A true CN101718214A (en) | 2010-06-02 |
| CN101718214B CN101718214B (en) | 2016-08-24 |
Family
ID=40404917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910204714.3A Expired - Fee Related CN101718214B (en) | 2008-10-08 | 2009-09-29 | For lubricating method and this large-sized diesel motor of large-sized diesel motor |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2175107A1 (en) |
| JP (1) | JP2010090897A (en) |
| KR (2) | KR20100039813A (en) |
| CN (1) | CN101718214B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108301893A (en) * | 2017-01-12 | 2018-07-20 | 上海船厂船舶有限公司 | Backwash oil drain tank and the oil circulation system comprising it |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2479413A1 (en) * | 2011-01-24 | 2012-07-25 | Wärtsilä Schweiz AG | Piston for a stroke piston combustion engine |
| US9154678B2 (en) | 2013-12-11 | 2015-10-06 | Apple Inc. | Cover glass arrangement for an electronic device |
| JP6675956B2 (en) * | 2016-08-29 | 2020-04-08 | 三菱重工業株式会社 | Frame and crosshead internal combustion engine |
| NL2029230B1 (en) | 2021-09-23 | 2023-02-23 | Margaretha Maria Nicolaas Rombouts Cornelis | Internal combustion engine with means for condensation fluid removal |
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| JPS58165515A (en) * | 1982-03-26 | 1983-09-30 | Mitsui Eng & Shipbuild Co Ltd | Method and device for injecting oil to cylinder of diesel engine |
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| DE19902928C1 (en) * | 1999-01-26 | 2000-08-24 | Daimler Chrysler Ag | Lubrication system for piston group of internal combustion engine, with closed circuit including device for wetting cylinder surface |
| CN1299921A (en) * | 1999-12-09 | 2001-06-20 | 曼B与W狄赛尔公司 | Engine |
| EP1696021A2 (en) * | 2004-12-30 | 2006-08-30 | A.P. Moller - Maersk A/S | Method and system for improving fuel economy and environmental impact operating a 2-stroke engine |
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| JPH0299708A (en) * | 1988-10-07 | 1990-04-11 | Mitsubishi Heavy Ind Ltd | Regeneration unit for cylinder oil |
| JPH02169006A (en) * | 1988-12-22 | 1990-06-29 | Mazda Motor Corp | Engine-oil deterioration preventing device |
| JPH0726687Y2 (en) * | 1989-05-08 | 1995-06-14 | 日産ディーゼル工業株式会社 | Engine oil viscosity detector |
| JPH0680805U (en) * | 1993-04-13 | 1994-11-15 | 三菱重工業株式会社 | Cylinder oil reuse device |
| JP4508046B2 (en) * | 2005-09-02 | 2010-07-21 | トヨタ自動車株式会社 | Lubricating device for internal combustion engine |
| JP2007224760A (en) * | 2006-02-21 | 2007-09-06 | Toyota Motor Corp | Cylinder lubricating device |
| JP2008095562A (en) * | 2006-10-06 | 2008-04-24 | Toyota Motor Corp | Engine oil degradation determining device |
-
2009
- 2009-09-04 EP EP09169465A patent/EP2175107A1/en not_active Withdrawn
- 2009-09-29 CN CN200910204714.3A patent/CN101718214B/en not_active Expired - Fee Related
- 2009-10-07 KR KR1020090095010A patent/KR20100039813A/en active Application Filing
- 2009-10-07 JP JP2009232968A patent/JP2010090897A/en active Pending
-
2016
- 2016-02-04 KR KR1020160014135A patent/KR20160021170A/en not_active Application Discontinuation
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58165515A (en) * | 1982-03-26 | 1983-09-30 | Mitsui Eng & Shipbuild Co Ltd | Method and device for injecting oil to cylinder of diesel engine |
| JPH03194109A (en) * | 1989-12-21 | 1991-08-23 | Mitsubishi Heavy Ind Ltd | Cylinder lubricating system |
| DE19902928C1 (en) * | 1999-01-26 | 2000-08-24 | Daimler Chrysler Ag | Lubrication system for piston group of internal combustion engine, with closed circuit including device for wetting cylinder surface |
| CN1299921A (en) * | 1999-12-09 | 2001-06-20 | 曼B与W狄赛尔公司 | Engine |
| EP1696021A2 (en) * | 2004-12-30 | 2006-08-30 | A.P. Moller - Maersk A/S | Method and system for improving fuel economy and environmental impact operating a 2-stroke engine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108301893A (en) * | 2017-01-12 | 2018-07-20 | 上海船厂船舶有限公司 | Backwash oil drain tank and the oil circulation system comprising it |
| CN108301893B (en) * | 2017-01-12 | 2023-12-29 | 上海外高桥造船海洋工程项目管理有限公司 | Backwash greasy dirt cabinet and lubricating oil circulation system comprising same |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2175107A1 (en) | 2010-04-14 |
| CN101718214B (en) | 2016-08-24 |
| JP2010090897A (en) | 2010-04-22 |
| KR20100039813A (en) | 2010-04-16 |
| KR20160021170A (en) | 2016-02-24 |
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