CN104421034A - Cylinder assembly for a reciprocating piston combustion machine and cooling method - Google Patents
Cylinder assembly for a reciprocating piston combustion machine and cooling method Download PDFInfo
- Publication number
- CN104421034A CN104421034A CN201410411704.8A CN201410411704A CN104421034A CN 104421034 A CN104421034 A CN 104421034A CN 201410411704 A CN201410411704 A CN 201410411704A CN 104421034 A CN104421034 A CN 104421034A
- Authority
- CN
- China
- Prior art keywords
- cooling
- cylinder
- cylinder sleeve
- fluid
- sleeve
- 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.)
- Pending
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 188
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 28
- 239000012809 cooling fluid Substances 0.000 claims abstract description 75
- 229910000831 Steel Inorganic materials 0.000 claims description 49
- 239000012530 fluid Substances 0.000 claims description 49
- 239000010959 steel Substances 0.000 claims description 49
- 230000002829 reductive effect Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000002826 coolant Substances 0.000 description 7
- 239000000498 cooling water Substances 0.000 description 6
- 230000008676 import Effects 0.000 description 6
- 238000009826 distribution Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000659 freezing mixture Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000008041 oiling agent Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/10—Cylinders; Cylinder heads having cooling means for liquid cooling
- F02F1/14—Cylinders with means for directing, guiding or distributing liquid stream
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
- F01P2003/027—Cooling cylinders and cylinder heads in parallel
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention relates to a cylinder liner arrangement for a reciprocating internal combustion engine and a cooling method. The cylinder liner arrangement comprises a cylinder liner, in which a piston is installed, the factory and installed state between a top dead center and a bottom dead center so along a cylinder axis of the cylinder liner reciprocally disposed forth that a top of the piston delimits, together with a running surface of the cylinder liner and on the cylinder liner arranged in the cylinder cover a combustion chamber. The cylinder liner comprises a liner cooling system for cooling the cylinder liner by means of liner cooling fluid and the cylinder cover comprises a cover cooling system for cooling the cylinder cover by means of a cover cooling fluid, According to the invention, the liner cooling system in such a manner decoupled from the cover cooling system that a flow communication between the liner cooling fluid and the cover cooling fluid is controlled or regulated, or that the flow communication between the liner cooling fluid and the cover cooling fluid is prevented.
Description
Technical field
The present invention relates to basis for the steel bushing device of stroke piston combustion engine especially longitudinally scavenged two-stroke large diesel engine and the cooling means for cooling cylinder covering device.
Background technique
Large-sized diesel motor is often used as boats and ships drive train, or also is such as used to drive high-rating generator with generating at fixed run duration.Related to this, motor runs considerable time with continuous operation mode usually, and this shows there is strict demand in the effort with regard to job security and usability and cost.Cause for this reason, the main criterion that the economic maintenance operator of especially long service intervals, little wearing and tearing and fuel and riding material is operated machines.Especially, the piston travelling performance run slowly in this large aperture in the cylinder sleeve of diesel engine is the length of service intervals and the deciding factor of usability, and by oiling agent consume also be directly linked to operating cost and and then business efficiency.So, the challenge of the piston travelling performance of large-sized diesel motor becomes more and more important.
Related to this, the load that cylinder sleeve stands in region at an upper portion thereof in running state is very high as is well known, this means the now upper dead center position of piston near cylinder cap.Gas mixture is lighted near the upper dead center position of piston, this means when by cylinder sleeve, cylinder cap and piston around the volume of combustion space be approximately in minimum value when.Thus, high temperature and high pressure acts in cylinder sleeve, and described high temperature and high pressure is not only because piston movement and and then because the dynamic volume of combustion space changes all the time and also runs into other strong dynamic change.
Cause for this reason, just be aware of for a long time and such as multiple air ring be set at the upper end of the close cylinder cap of cylinder sleeve, described air ring is preferably equipped with magnetism servo-electric motor water-cooling, thus the thermal force occurred at least partially can by air ring by cylinder sleeve described in diversion.Meanwhile, the simple air ring such as shown in US937200 is also provided with.
Because the most thermal potentials produced in cylinder in the upper area of cylinder sleeve and and then naturally also in the fact at cylinder cap place, therefore, for the known steel bushing device of prior art, the temperature in the upper area of cylinder sleeve is significantly higher than the temperature in the lower area of cylinder sleeve.About from the known cylinder sleeve of prior art, this means in the casing wall of cylinder sleeve, to there is huge temperature gradient along cylinder axis.In other words, the wall of cylinder sleeve and temperature especially in the upper area of cylinder cap is too high compared with the average temperature value of expectation, or too low compared with the temperature in the lower area of cylinder sleeve.
This has multiple distinct unfavorable result well known to those of ordinary skill in the art simultaneously.Because the distinct temperature in the zones of different of the wall of cylinder sleeve, the internal mechanical distortion that Lock-in is corresponding.Such as, when not taking addition thereto, the upper area of the close cylinder cap of cylinder sleeve is than lower area radial expansion more strongly.This means following danger: in the running state of stroke piston combustion engine, the internal diameter in the upper area of cylinder sleeve is greater than the internal diameter in the lower area of cylinder sleeve.This not only has known disadvantage with regard to the piston mobile behavior of piston, therefore also makes the friction between piston and cylinder sleeve working surface increase, and certainly in the material of cylinder sleeve radial and along the corresponding inner tensions of axially generation of cylinder axis.Large temperature gradient also causes the acceleration in cylinder sleeve naturally relatively with relevant machine part and/or arrange more by force and uneven corrosion process.And the formation of damaging acid also has such as cold erosion to be facilitated by corresponding and/or be affected in an unfavourable manner.Thus, it is exemplary that above-mentioned listed damaging result is only construed as, instead of conclusive.To this, those of ordinary skill in the art know other disadvantageous consequences many.
In addition, the solution known from prior art also demonstrates following problem, based on mode of execution, identical cooling medium such as cooling water is used to cylinder sleeve and for cylinder cap, and combination cooling circuit is even set usually for cylinder sleeve with for cylinder cap, thus between cylinder sleeve and cylinder cap, there is huge heat exchange, particularly by described common cooling circuit.In fact, this often means that in cylinder cap, produce the not inconsiderable additional heat from cylinder sleeve affects.This may produce following effect again, namely, cooling water in cylinder cap is heated up considerably, result, especially may appear in freezing mixture in cylinder cap and form vapour bubble, and/or the vapour bubble be formed in cylinder sleeve rises through cooling system and enters cooling cylinder cap, result, cooling in cylinder cap is weakened, these component that result in cylinder cap itself in a worst case scenario and/or be arranged on cylinder cap place are as nozzle, outlet valve, hydrovalve and device etc. are impaired, as known to persons of ordinary skill in the art, but or significantly shorten the working life of described component and/or adversely have influence on engine performance.
Therefore, not only there is the working life of associated components as cylinder sleeve itself or at least obvious shortening of the working surface of cylinder sleeve, piston ring, piston, cylinder cap and component located therein (as nozzle, outlet valve, hydrovalve and assembling set etc.) for the steel bushing device expection that prior art is known, and power loss when having to consider to cause oil consumption to increase and finally cause completely the engine operation of more high cost and operational efficiency reduction.
Summary of the invention
Cause for this reason, the object of this invention is to provide a kind of like this steel bushing device of improvement and/or the cooling means of a kind of steel bushing device for piston reciprocating internal combustion engine especially longitudinally scavenged two-stroke large diesel engine improvement, that is, the problem from prior art is known is avoided.Especially the Static and dynamic heat expansion of expansion can be controlled with improved procedure, the internal combustion engine Security increased can be guaranteed thus, the duration of service intervals can be extended, the working life of cylinder sleeve and other parts can be extended significantly, so, the operating cost of motor can finally significantly be reduced.
The feature meeting the theme of the present invention of these objects is the feature of first aspect and the 9th aspect.
Subordinate aspect particularly relates to Advantageous embodiments of the present invention.
Therefore, the present invention relates to a kind of cylinder assembly for reciprocating internal combustion engine especially longitudinally scavenged two-stroke large diesel engine, this cylinder assembly comprises the cylinder sleeve that can be provided with piston, described piston is arranged to so to move to and fro between upper dead center position and lower dead center position along the cylinder axis of cylinder sleeve under running state and installment state, that is: make the upside of piston delimit combustion space with the working surface of described cylinder sleeve together with being arranged in the cylinder cap at cylinder sleeve place.Cylinder sleeve comprise for by cylinder sleeve cooling fluid to cool this cylinder sleeve jacket-cooling system and wherein cylinder cap comprise for by Cooling of Cylinder Head fluid to cool the Cooling of Cylinder Head system of this cylinder cap.According to the present invention, jacket-cooling system so and Cooling of Cylinder Head system take off coupling, that is: make the flowing exchange energy between cylinder sleeve cooling fluid and Cooling of Cylinder Head fluid be controlled or regulate.Alternatively, the flowing between cylinder sleeve cooling fluid and Cooling of Cylinder Head fluid exchanges and is prevented from.
Therefore it is important to the present invention, self independently cooling system be set to for cylinder cap with for cylinder sleeve respectively, wherein, jacket-cooling system so and Cooling of Cylinder Head system take off coupling, that is, the flowing between cylinder sleeve cooling fluid and Cooling of Cylinder Head fluid exchanges and can be controlled or regulate or be prevented from.In other words, the flowing between cylinder sleeve cooling fluid and Cooling of Cylinder Head fluid exchanges and is controlled by control gear or controlling device or regulate, such as, arrange at least one valve by between jacket-cooling system and Cooling of Cylinder Head system.As the alternative form controlled or regulate, flowing between cylinder sleeve cooling fluid and Cooling of Cylinder Head fluid exchanges and can be prevented from, such as by the segregating unit between jacket-cooling system and Cooling of Cylinder Head system, can not produce by segregating unit the fluid exchanged for flowing here and be communicated with.
Because following true, namely, according to the present invention, self independently corresponding cooling system be arranged for cylinder cap and for cylinder sleeve and when prevent from flowing between cylinder sleeve cooling fluid and Cooling of Cylinder Head fluid exchange, the mixing of the cooling medium of Cooling of Cylinder Head system and jacket-cooling system is there is not compared with the technological scheme that prior art is known, this means the mixing not realized Cooling of Cylinder Head fluid and cylinder sleeve cooling fluid by the present invention, this is because Cooling of Cylinder Head system and jacket-cooling system are de-couplings viewed from flowing angle, thus the flowing can got rid of between Cooling of Cylinder Head system and jacket-cooling system exchanges.
This positive consequence produced is, is not exchanged by described Cooling of Cylinder Head system and the flowing between having according to the jacket-cooling system of steel bushing device of the present invention and is additionally introduced cylinder cap by heat from cylinder sleeve.Thus, the present invention especially prevents the cooling water in cylinder cap so to be heated consumingly, so that form vapour bubble in cooling water in cylinder cap and/or the vapour bubble be formed in cylinder sleeve can rise up in cylinder cap on cooling system, result, cooling in cylinder cap is weakened, and this can cause above-mentioned infringement under operation.
Flowing between cylinder sleeve cooling fluid and Cooling of Cylinder Head fluid exchanges and is controlled by control gear or controlling device or regulate, the mixing of cylinder sleeve cooling fluid and Cooling of Cylinder Head fluid occurs, and now especially same fluid is used to cylinder sleeve cooling fluid and for Cooling of Cylinder Head fluid.Exchange by controlling or adjusting flowing, such as, additional heat can be stoped to be introduced into cylinder cap from cylinder sleeve.And by controlling or adjust flowing to exchange, the hot-fluid between cylinder sleeve and cylinder cap such as can set according to the temperature in cylinder sleeve and cylinder cap, and described temperature may depend on the operating mode of stroke piston combustion engine.
In order to alleviate the heat trnasfer especially between jacket-cooling system and Cooling of Cylinder Head system further, can so design and arrange the dielectric separator of poor heat conductivity, namely, flowing between cylinder sleeve cooling fluid and Cooling of Cylinder Head fluid is exchanged be prevented from, wherein, usually in practice can between jacket-cooling system and Cooling of Cylinder Head system, especially in dielectric separator region, additionally Sealing is set, thus such as cylinder sleeve inside is sealed towards the outside between cylinder cap and cylinder sleeve and/or described Cooling of Cylinder Head system and/or jacket-cooling system are sealed toward each other or relative to the external world, thus such as described Cooling of Cylinder Head fluid and/or cylinder sleeve cooling fluid can not be drawn from its cooling system.
Dielectric separator can especially truely construct in one embodiment, that is, making the flowing between cylinder sleeve cooling fluid and Cooling of Cylinder Head fluid exchange can be controlled or regulate.For this purpose, controlled or adjustable device such as controlled or adjustable valve can be disposed in dielectric separator place and/or dielectric separator to realize flowing exchange, to block flowing exchange or (such as engine running parameter) adjustment flowing exchange as requested.Certainly, dielectric separator can be the dielectric separator of poor heat conductivity, is wherein provided with described controlled or adjustable equipment.
According to a mode of execution, this dielectric separator is especially formed with the form of heat exchanger.The advantage of such work is the good heat conveying achieved between described Cooling of Cylinder Head fluid and cylinder sleeve cooling fluid, thus in cylinder sleeve temperature distribution longitudinally become evenly, this means that temperature gradient is reduced.
Described heat exchanger is preferably disposed between described cylinder sleeve afflux space and cylinder cap afflux space.
Heat exchanger such as can be designed to one of lower component or its combination in any: large-area plate, corrugated metal plate, piping, labyrinthine system.
About especially relevant to the enforcement of steel bushing device of the present invention embodiment, jacket-cooling system is so arranged in the casing wall of cylinder sleeve, that is: make cylinder sleeve cooling fluid be supplied to jacket-cooling system by the cylinder sleeve influent stream mouth being arranged in cylinder cap and cylinder sleeve and going out between head piece, and cylinder sleeve cooling fluid go out head piece by cylinder sleeve is again drawn from jacket-cooling system.Thus, the initial edge of cylinder sleeve cooling fluid is directed from cylinder sleeve influent stream mouth towards the direction of cylinder cap, is guided to again cylinder sleeve subsequently goes out head piece from the direction of cylinder cap.
This produces following very favorable effect, namely, heat that can be predetermined is sent to the region be positioned at below cylinder influent stream mouth of cylinder sleeve from the region above the position cylinder influent stream mouth of cylinder sleeve by cylinder sleeve cooling fluid, thus axial-temperature gradient especially in cylinder sleeve and depend on that particular design also has the radial symmetry gradient in cylinder sleeve to be significantly reduced, like this, temperature distribution in the wall of cylinder sleeve cylinder become remarkable evenly, especially in the axial direction.Or rather, in cylinder sleeve, also cylinder sleeve afflux space can be set further, this cylinder sleeve afflux space is arranged near cylinder cap especially related to thisly, thus cylinder sleeve cool stream physical efficiency is supplied at first and is arranged in cylinder sleeve influent stream mouth and cylinder sleeve and goes out cylinder sleeve afflux space between head piece, subsequently, cylinder sleeve cooling fluid goes out head piece by cylinder sleeve and is again drawn from cylinder sleeve afflux space.Related to this, cylinder sleeve afflux space can especially be used as compensation vessel or can be used as the starting point of the respective aperture in the wall of cylinder sleeve in cylinder sleeve manufacture, and described hole at least forms a part for jacket-cooling system subsequently.
As described in foreword in detail, the most thermal potentials produced in the upper-side area of cylinder sleeve, and then are also arranged in cylinder cap region, therefore, for the steel bushing device that prior art is known, the temperature in the upper-side area of cylinder sleeve is apparently higher than the temperature of the underside area of cylinder sleeve.This means that huge temperature gradient is present in the casing wall of cylinder sleeve along cylinder axis for the known cylinder sleeve of prior art.Or in other words, in the upper-side area of cylinder bore wall and temperature especially near cylinder cap is too high compared with the average temperature value of expectation, and the temperature in the underside area of cylinder sleeve is compared too low.
So, first time damaging temperature distribution is successfully avoid by the present invention, this is because the axial-temperature gradient in cylinder sleeve is significantly reduced, and depend on particular design, radial symmetry gradient even in cylinder sleeve is also significantly reduced, so, the temperature distribution in the casing wall of cylinder sleeve is much more even, especially for steel bushing device of the present invention in the axial direction.
Because the much more even temperature distribution in the casing wall of cylinder sleeve, in the casing wall of steel bushing device of the present invention, only there is negligible interior mechanics distortion, this is because cylinder sleeve especially also with regard to axially by jacket-cooling system by the full and uniform mean temperature as one man remaining on expectation.Cause for this reason, such as, does not more strongly expand than in underside area in the upper-side area of cylinder sleeve diametrically near cylinder cap, does not take addition thereto in other words.This means to be close to for steel bushing device of the present invention and no longer include following danger existence, that is, in the running state of stroke piston combustion engine, the internal diameter in the upper-side area of cylinder sleeve is than large in underside area.Thus, not only all be reduced to minimum for the known disadvantage of piston ride quality and the increase friction between piston and cylinder sleeve working surface, in natural cylinder jacket material, be also reduced to acceptable minimum level in radial direction and along the corresponding inner tensions on the axial direction of cylinder axis.
The described improvement in the cylinder sleeve region of steel bushing device according to the present invention of cooling system and cooling means also directly actively has influence on the cooling in cylinder cap naturally, is usually more strongly alleviated by design according to the present invention this is because heat introduces cylinder cap from cylinder sleeve.
Related to this, described Cooling of Cylinder Head system is preferably so disposed in cylinder cap, that is: make described Cooling of Cylinder Head fluid can be supplied to described Cooling of Cylinder Head system via cylinder cap influent stream mouth and head piece can be gone out via cylinder cap again to be drawn from described Cooling of Cylinder Head system, wherein, be similar to cylinder sleeve, go out between head piece at cylinder cap influent stream mouth and cylinder cap, the cylinder cap afflux space for described Cooling of Cylinder Head fluid especially can also be set near cylinder sleeve.Thus, described cylinder cap afflux space especially can be used as such as compensation vessel or can be used as the starting point of the respective aperture in the wall of cylinder cap in cylinder cap manufacture, and described hole forms described Cooling of Cylinder Head system at least partially subsequently.
Especially preferredly be, Cooling of Cylinder Head fluid is supplied at first and is arranged in cylinder cap influent stream mouth and cylinder cap and goes out cylinder cap afflux space between head piece in running state, subsequently, this Cooling of Cylinder Head fluid goes out head piece via cylinder cap and is again drawn from cylinder cap afflux space, wherein Cooling of Cylinder Head fluid is preferably initial directed towards the direction of cylinder sleeve from cylinder cap influent stream opening's edge, head piece is gone out and the direction leaving cylinder sleeve is drawn again afterwards towards cylinder cap, thus, very good and uniform cooling effect diametrically and in the axial direction can be produced in cylinder cap.
Thus, cylinder sleeve cooling fluid especially preferably uses the cooling fluid being different from Cooling of Cylinder Head fluid, and now oil is preferably used as cylinder sleeve cooling fluid and/or water is preferably used as Cooling of Cylinder Head means.
Because oil exists before oil gas bubble is formed in oil be usually heated to the temperature more much higher than water, therefore oil is used to cool cylinder sleeve, at cylinder sleeve place such as especially in the upper-side area of cylinder sleeve, usually can exist up to 200 DEG C or much higher temperature, now such as oil can obtain according to various variant and q.s, without the need to there is puzzlement aboard ship again.In particular, for example also there is various oil to drive cooling system for various different facility aboard ship, thus exactly, even jacket-cooling system can be integrated in existing cooling system and not need further puzzlement.Cold oil can be supplied to cylinder sleeve via cylinder sleeve influent stream mouth as cylinder sleeve cooling fluid subsequently at the temperature of such as about 50 DEG C, and the stream that wherein cold oil can go out the direction of head piece subsequently towards cylinder sleeve at it is heated to 150 DEG C to 200 DEG C.Thus, so the heat mainly concentrated in the upper-side area of cylinder sleeve is in the axial direction by the cold oil be more or less directed through downwards equably in the wall of cylinder sleeve, this more or less keeps at a certain temperature equably thus.
In order to cool cylinder cap in steel bushing device according to the present invention, water can be utilized without any problems as Cooling of Cylinder Head fluid, this is because for the inevitable absorptance of described Cooling of Cylinder Head fluid of steel bushing device of the present invention from the less heat of the steel bushing device that prior art is known, thus especially also in Cooling of Cylinder Head system according to the present invention, form the vapour bubble that significantly can weaken Cooling of Cylinder Head without the need to worrying.
Identical cooling fluid preferably and steel bushing device design and be used to two coolant circuits relatively and exchange can be controlled or regulate with the flowing realized between cylinder sleeve cooling fluid and Cooling of Cylinder Head fluid.
Another aspect of the present invention relates to a kind of steel bushing device for stroke piston combustion engine especially longitudinally scavenged two-stroke large diesel engine, this steel bushing device comprises the cylinder sleeve that piston can be housed, this piston can move back and forth between upper dead center position and lower dead center position along the cylinder axis of cylinder sleeve, thus combustion space is defined together with the working surface of cylinder sleeve and the cylinder cap that is arranged on cylinder sleeve place in the upside of this piston.This steel bushing device comprises for the cylinder cooling system by cylinder cooling fluid cooling cylinder sleeve and cylinder cap.Cylinder cooling system so constructs, that is, cylinder cooling fluid is sent in cylinder cap by import and is also sent to subsequently in cylinder sleeve, wherein, especially can be provided with outlet so that cylinder cooling fluid is sent steel bushing device in cylinder sleeve.According to the present invention, steel bushing device comprises the gas separator of the upstream being arranged on this import.
An additional aspect of the present invention relates to a kind of cooling means of the steel bushing device for stroke piston combustion engine especially longitudinally scavenged two-stroke large diesel engine, steel bushing device comprises the cylinder sleeve that piston can be housed, described piston can run and in installment state along cylinder axis to-and-fro motion between upper dead center position and lower dead center position of cylinder sleeve, thus combustion space is delimited together with cylinder sleeve working surface and the cylinder cap that is arranged on cylinder sleeve place in the upside of piston.Steel bushing device comprise for by cylinder cooling fluid to cool the cylinder cooling system of cylinder sleeve and cylinder cap.Cylinder cooling system so constructs, that is, cylinder cooling fluid is sent in cylinder cap and is also then sent in cylinder sleeve by import, wherein, in cylinder sleeve, is especially provided with outlet sends steel bushing device for by cylinder cooling fluid.Steel bushing device of the present invention comprises the gas separator of from cylinder cooling fluid divided gas flow especially bubble, and wherein said gas separator is arranged in the upstream of import.
This has the following advantages, and is transferred and the cylinder cooling fluid that heats then is conveyed into cylinder sleeve in cylinder cap, thus, substantially can prevent temperature gradient huge along cylinder axis in the casing wall of cylinder sleeve.In addition, being present in cylinder cooling fluid and the gas that can be formed in a cooling system in the operation of reciprocating internal combustion engine can be separated from cylinder cooling fluid substantially by gas separaion, to realize the cooling fully reliably in steel bushing device.In rest stage between two operation phase, such as, when boats and ships are unloaded on harbour under large-sized diesel motor closes down situation, this is very favourable.So the bubble in cylinder cooling system can flow along the direction of cylinder cap in rest stage, but thus one, after reciprocating internal combustion engine is restarted again, cooling can be stoped to affect adversely by gas separator.In addition, only need a cooling system, thus cylinder cooling system manufactures at it and is that very economical is calculated in operation.
Accompanying drawing explanation
The present invention is described in detail hereinafter with reference to schematic diagram:
Fig. 1 shows the embodiment of the steel bushing device of the present invention with independent coolant circuit;
Fig. 2 shows according to the embodiment with the steel bushing device of heat exchanger between coolant circuit of the present invention;
Fig. 3 illustrates the embodiment of the steel bushing device only with a coolant circuit.
Embodiment
Fig. 1 schematically show a kind of for internal-combustion reciprocating-pisto and especially longitudinally scavenged two-stroke large diesel engine according to steel bushing device 1 of the present invention, and for the sake of clarity and only to be illustrated by broken section.
Thus, piston shown in non-amplified is arranged in cylinder sleeve 2 according to known mode itself, this piston can so move back and forth between upper dead center position and lower dead center position along the cylinder axis A of cylinder sleeve 2 in operation and working state, that is, the upside of this piston delimits combustion space 4 together with the working surface 21 of cylinder sleeve 2 with the cylinder cap 3 being located at cylinder sleeve 2 place.
Cylinder sleeve 2 comprises jacket-cooling system 200, to cool cylinder sleeve 2 by cylinder sleeve cooling fluid 201, described cylinder sleeve cooling fluid is cold oil in the present example, and cylinder cap 3 comprise for by Cooling of Cylinder Head fluid 301 to cool the Cooling of Cylinder Head system 300 of cylinder cap 3, described Cooling of Cylinder Head fluid is cooling water in the example in fig 1.According to the present invention, related to thisly, jacket-cooling system 200 so takes off coupling with Cooling of Cylinder Head system 300, that is, the flowing exchange between cylinder sleeve cooling fluid 201 and Cooling of Cylinder Head fluid 301 is prevented from.
As clearly shown in Figure 1, jacket-cooling system 200 is so arranged in the casing wall 22 of cylinder sleeve 2, namely, cylinder sleeve cooling fluid 201 is supplied to jacket-cooling system 200 by the cylinder sleeve influent stream mouth 210 being arranged in cylinder cap 3 and cylinder sleeve and going out between head piece 211, and cooling fluid goes out head piece 211 by cylinder sleeve is again drawn from jacket-cooling system 200.Thus, cylinder sleeve influent stream mouth 210 and cylinder sleeve go out head piece 211 and are connected to the external refrigeration system viewed from flowing angle with known any design form itself.
Say that the Cooling of Cylinder Head system 300 do not associated with jacket-cooling system 200 is arranged according to the present invention in cylinder cap 3 from flowing angle, thus Cooling of Cylinder Head fluid 301 can be supplied to described Cooling of Cylinder Head system 300 via cylinder cap influent stream mouth 310, and described Cooling of Cylinder Head fluid can go out head piece 311 via cylinder cap is again drawn from Cooling of Cylinder Head system 300.
Thus, go out the cylinder sleeve afflux space 220 arranged between head piece 211 for cylinder sleeve cooling fluid 201 at cylinder sleeve influent stream mouth 210 and cylinder sleeve, and go out the cylinder cap afflux space 320 also arranged between head piece 311 for Cooling of Cylinder Head fluid 311 at cylinder cap influent stream mouth 310 and cylinder cap.Related to this, cylinder cap afflux space 320 in the example in fig 1 and/or cylinder sleeve afflux space 220 especially have the function of the compensation vessel for cooling fluid, and in the manufacture of cylinder cap 3 and/or cylinder sleeve 2, be used as the starting point of respective aperture, described hole is introduced in the wall of cylinder cap 3 and/or cylinder sleeve 2 by suitable drilling tool, thus can very simple and high effect being formed by this some holes than ground at least partially of described Cooling of Cylinder Head system 300 and/or jacket-cooling system 200.Certainly it should be understood that described Cooling of Cylinder Head system 300 and/or jacket-cooling system 200 also can be built up in cylinder cap 3 and/or cylinder sleeve 2 by known other suitable technology any itself.
About the specific embodiment of Fig. 1, dielectric separator 5 is so constructed and is arranged between the cylinder sleeve afflux space 220 of jacket-cooling system 200 and the cylinder cap afflux space 320 of Cooling of Cylinder Head system 300, namely, flowing between cylinder sleeve cooling fluid 201 and described Cooling of Cylinder Head fluid 301 exchanges and is prevented from, and alleviates heat exchange as far as possible.In this regard, in dielectric separator 5 region, between jacket-cooling system 200 and described Cooling of Cylinder Head system 300, also Sealing 6 is additionally provided with.
About the specific embodiment of Fig. 1, tension link 7 is additionally arranged according to known mode itself, and it additionally can help the radial rotating limiting cylinder sleeve 2.
It is appreciated of course that the present invention is contained any suitable combination of embodiments of the invention and is obvious other simple designs of the present invention to those of ordinary skill in the art, even if they are not explicitly described in the present invention.It is important to the present invention, the measure advised finally result in cylinder sleeve with regard to thermomechanics as far as possible in running state equably bearing load with the damage problem avoiding foreword to mention.In fig. 2, the steel bushing device 1 especially for stroke piston combustion engine with the longitudinally scavenged two-stroke large diesel engine of heat exchanger of the present invention is schematically illustrated and for the sake of clarity and by a broken section view.
Hereafter and hereinafter, reference character identical in all figure relates to identical feature.
The steel bushing device according to Fig. 1 is corresponded essentially to according to the steel bushing device 1 of Fig. 2.Be different from Fig. 1, dielectric separator 5 is formed with heat exchanger form and is arranged between cylinder cap afflux space 320 and cylinder sleeve afflux space 220.Heat exchanger is corrugated metal plate form.The Sealing that may need between jacket-cooling system 200 and Cooling of Cylinder Head system 300 is not shown in this example.
In addition, controlled or adjustable valve 8 is arranged in dielectric separator 5 to allow to carry out flowing exchange between jacket-cooling system 200 and Cooling of Cylinder Head system 300.Certainly, the dielectric separator 5 in heat exchanger form also can be configured to do not have controlled or adjustable valve.
In figure 3, only there is a coolant circuit steel bushing device 1 especially for stroke piston combustion engine with the longitudinally scavenged two-stroke large diesel engine of hot piston be shown schematically and for the sake of clarity and only gone out by broken section.
Steel bushing device 1 comprise for by cylinder cooling fluid 401 to cool cylinder sleeve 2 and to cool the cylinder cooling system 400 of cylinder sleeve 3.Cylinder cooling fluid 401 is supplied to cylinder cooling system 400 by the import 11 be arranged in cylinder cap 3.Subsequently, cylinder cooling fluid 401 flows in cylinder afflux space 420, and this cylinder afflux space 420 to be partly arranged in cylinder cap 3 and to be partly arranged in cylinder sleeve 2.Then, cylinder cooling fluid 401 flows to the outlet 12 be arranged in cylinder sleeve and is also therefore sent steel bushing device 1.
In gas separator, the valve of 10 forms is disposed in the upstream of import 11.By gas separator 10, the gas and/or bubble that are formed in cylinder cooling fluid can be isolated to ensure that cylinder cooling system 400 reliably runs as far as possible from cylinder cooling system 400.
Claims (15)
1. one kind for stroke piston combustion engine and the steel bushing device of especially longitudinally scavenged large-scale two-stroke diesel engine, this steel bushing device comprises the cylinder sleeve (2) that can be provided with piston, described piston is arranged to so to move to and fro between upper dead center position and lower dead center position by the cylinder axis (A) along described cylinder sleeve (2) under running state and installment state, that is: combustion space (4) is delimited together with the working surface (21) making the upside of described piston and described cylinder sleeve (2) and the cylinder cap (3) being arranged in described cylinder sleeve (2) place, and wherein said cylinder sleeve (2) comprises the jacket-cooling system (200) for cooling this cylinder sleeve (2) by cylinder sleeve cooling fluid (201), and wherein said cylinder cap (3) comprises the Cooling of Cylinder Head system (300) for cooling this cylinder cap (3) by Cooling of Cylinder Head fluid (301), it is characterized in that, described jacket-cooling system (200) is the de-coupling with described Cooling of Cylinder Head system (300) so, that is: make the flowing exchange energy between described cylinder sleeve cooling fluid (201) and described Cooling of Cylinder Head fluid (301) be controlled or regulate, or the flowing between described cylinder sleeve cooling fluid (201) and described Cooling of Cylinder Head fluid (301) is exchanged be prevented from.
2. steel bushing device according to claim 1, wherein, described jacket-cooling system (200) is so arranged in the casing wall (22) of described cylinder sleeve (2), that is: make described cylinder sleeve cooling fluid (201) described jacket-cooling system (200) can be supplied to via being arranged in the cylinder sleeve influent stream mouth (210) that described cylinder cap (3) and cylinder sleeve go out between head piece (211), and described cylinder sleeve cooling fluid (201) can go out head piece (211) via described cylinder sleeve is again drawn from described jacket-cooling system (200).
3. steel bushing device according to claim 1 and 2, wherein, described Cooling of Cylinder Head system (300) is so arranged in described cylinder cap (3), that is: make described Cooling of Cylinder Head fluid (301) can be supplied to described Cooling of Cylinder Head system (300) via cylinder cap influent stream mouth (310) and can go out head piece (311) via cylinder cap again to be drawn from described Cooling of Cylinder Head system (300).
4. according to steel bushing device in any one of the preceding claims wherein, wherein, the cylinder sleeve afflux space (220) arranging between head piece (211) and be used for described cylinder sleeve cooling fluid (201) is gone out described cylinder sleeve influent stream mouth (210) and described cylinder sleeve.
5. according to steel bushing device in any one of the preceding claims wherein, wherein, the cylinder cap afflux space (320) arranging between head piece (311) and be used for described Cooling of Cylinder Head fluid (301) is gone out described cylinder cap influent stream mouth (310) and described cylinder cap.
6. according to steel bushing device in any one of the preceding claims wherein, wherein, so design between described jacket-cooling system (200) and described Cooling of Cylinder Head system (300) and arrange dielectric separator (5), that is: making the flowing exchange energy between described cylinder sleeve cooling fluid (201) and described Cooling of Cylinder Head fluid (301) be controlled or regulate; Or the flowing between wherein said cylinder sleeve cooling fluid (201) and described Cooling of Cylinder Head fluid (301) exchanges and is prevented from.
7. according to steel bushing device in any one of the preceding claims wherein, wherein, between described jacket-cooling system (200) and described Cooling of Cylinder Head system (300), especially Sealing (6) is set in the region of dielectric separator (5).
8. according to steel bushing device in any one of the preceding claims wherein, wherein, dielectric separator (5) is formed with the form of heat exchanger.
9. one kind for cooling the cooling means of the steel bushing device (1) for stroke piston combustion engine especially longitudinally scavenged two-stroke large diesel engine, wherein, described steel bushing device (1) comprises the cylinder sleeve (2) that can be provided with piston, described piston can so move to and fro by the cylinder axis (A) along described cylinder sleeve (2) under running state and installment state between upper dead center position and lower dead center position, that is: combustion space (4) is delimited together with the working surface (21) making the upside of described piston and described cylinder sleeve (2) and the cylinder cap (3) being arranged in described cylinder sleeve (2) place, the jacket-cooling system (200) being used for cooling this cylinder sleeve (2) by cylinder sleeve cooling fluid (201) is wherein set at described cylinder sleeve (2) place, and the Cooling of Cylinder Head system (300) being used for cooling this cylinder cap (3) by Cooling of Cylinder Head fluid (301) is wherein set at described cylinder cap (3) place, it is characterized in that, described jacket-cooling system (200) is the de-coupling with described Cooling of Cylinder Head system (300) so, that is: make the flowing exchange energy between described cylinder sleeve cooling fluid (201) and described Cooling of Cylinder Head fluid (301) be controlled or regulate, or the flowing between described cylinder sleeve cooling fluid (201) and this Cooling of Cylinder Head fluid (301) is exchanged be prevented from.
10. cooling means according to claim 9, wherein, described jacket-cooling system (200) is so disposed in the casing wall (22) of described cylinder sleeve (2), that is: described cylinder sleeve cooling fluid (201) is made described jacket-cooling system (200) can be supplied to via being arranged in the cylinder sleeve influent stream mouth (210) that described cylinder cap (3) and cylinder sleeve go out between head piece (211), and described cylinder sleeve cooling fluid (201) can go out head piece (211) via described cylinder sleeve is drawn again from described jacket-cooling system (200).
11. cooling meanss according to claim 9 or 10, wherein, described cylinder sleeve cooling fluid is initial along directed and go out head piece (211) and to leave the direction of described cylinder cap (3) directed towards described cylinder sleeve subsequently from described cylinder sleeve influent stream mouth (210) towards the direction of described cylinder cap (3), wherein especially described cylinder sleeve cooling fluid (201) is supplied at first and is arranged in described cylinder sleeve influent stream mouth (210) and described cylinder sleeve and goes out cylinder sleeve afflux space (220) between head piece (211), and described cylinder sleeve cooling fluid (201) goes out head piece (211) via described cylinder sleeve is subsequently drawn from this cylinder sleeve afflux space (220).
12. cooling meanss according to any one of claim 9 to 11, wherein, described Cooling of Cylinder Head system (300) is so disposed in described cylinder cap (3), that is: make described Cooling of Cylinder Head fluid (301) be supplied to described Cooling of Cylinder Head system (300) by cylinder cap influent stream mouth (310) and gone out head piece (311) by cylinder cap again to be drawn from described Cooling of Cylinder Head system (300), wherein said Cooling of Cylinder Head fluid (301) is preferably initial along directed and go out head piece (311) and to leave the direction of described cylinder sleeve (2) directed towards described cylinder cap subsequently from described cylinder cap influent stream mouth (310) towards the direction of described cylinder sleeve (2).
13. cooling meanss according to any one of claim 9 to 12, wherein, described Cooling of Cylinder Head fluid (301) is supplied at first and is arranged in described cylinder cap influent stream mouth (310) and described cylinder cap and goes out cylinder cap afflux space (320) between head piece (311), and described Cooling of Cylinder Head fluid (301) goes out head piece (311) via described cylinder cap subsequently is again drawn from described cylinder cap afflux space (320).
14. cooling meanss according to any one of claim 9 to 13, wherein, under the help of described cylinder sleeve cooling fluid (201), heat is so sent to the region being positioned at described cylinder sleeve influent stream mouth (201) below of described cylinder sleeve (2) from the region being positioned at described cylinder sleeve influent stream mouth (201) top of described cylinder sleeve (2), that is: make in described cylinder sleeve (2), axial and/or radial temperature gradient is reduced.
15. cooling meanss according to any one of claim 9 to 14, wherein, cylinder sleeve cooling fluid (210) uses the cooling fluid being different from described Cooling of Cylinder Head fluid (310), and oil is preferably used as cylinder sleeve cooling fluid (210) and/or water is preferably used as Cooling of Cylinder Head means (301).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP13183950.8 | 2013-09-11 | ||
| EP20130183950 EP2848786A1 (en) | 2013-09-11 | 2013-09-11 | Cylinder assembly for a reciprocating piston combustion machine and cooling method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104421034A true CN104421034A (en) | 2015-03-18 |
Family
ID=49223556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410411704.8A Pending CN104421034A (en) | 2013-09-11 | 2014-08-20 | Cylinder assembly for a reciprocating piston combustion machine and cooling method |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2848786A1 (en) |
| JP (1) | JP2015055246A (en) |
| KR (1) | KR20150030149A (en) |
| CN (1) | CN104421034A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269411A (en) * | 2017-04-26 | 2017-10-20 | 华电电力科学研究院 | Distributed energy resource system and the method for solving the fluctuation of jacket water system pressure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3693566A1 (en) | 2019-02-08 | 2020-08-12 | Winterthur Gas & Diesel AG | Cylinder assembly for a large-size engine and cooling method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US937200A (en) | 1909-03-09 | 1909-10-19 | Floyd T Wood | Whip-socket. |
| DE8633668U1 (en) * | 1986-12-17 | 1987-02-05 | Kloeckner-Humboldt-Deutz Ag, 5000 Koeln, De | |
| DE3707789A1 (en) * | 1987-03-11 | 1988-09-22 | Audi Ag | Cooling system for an internal combustion engine |
| GB2245703A (en) * | 1990-07-03 | 1992-01-08 | Ford Motor Co | Engine cooling system |
| DE59204029D1 (en) * | 1991-04-18 | 1995-11-23 | New Sulzer Diesel Ag | Arrangement for the cylinder cooling of a reciprocating piston internal combustion engine of the diesel type. |
| DE102005062294A1 (en) * | 2005-12-24 | 2007-06-28 | Dr.Ing.H.C. F. Porsche Ag | Method for cooling an internal combustion engine |
| DE112007001140B4 (en) * | 2006-05-08 | 2021-02-18 | Magna Powertrain Fpc Limited Partnership | Vehicle cooling system with directed flows |
| AT506000B1 (en) * | 2009-02-12 | 2010-12-15 | Avl List Gmbh | Combustion engine with a cylinder block and a cylinder head |
| DE112009005498T5 (en) * | 2009-10-19 | 2013-12-19 | Toyota Jidosha Kabushiki Kaisha | Cooling device for a machine |
-
2013
- 2013-09-11 EP EP20130183950 patent/EP2848786A1/en not_active Withdrawn
-
2014
- 2014-08-19 KR KR20140107816A patent/KR20150030149A/en not_active Application Discontinuation
- 2014-08-20 CN CN201410411704.8A patent/CN104421034A/en active Pending
- 2014-08-27 JP JP2014172120A patent/JP2015055246A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269411A (en) * | 2017-04-26 | 2017-10-20 | 华电电力科学研究院 | Distributed energy resource system and the method for solving the fluctuation of jacket water system pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015055246A (en) | 2015-03-23 |
| EP2848786A1 (en) | 2015-03-18 |
| KR20150030149A (en) | 2015-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103069149B (en) | Install with sparger and cool the motor arranged | |
| JP6126448B2 (en) | Piston cooling system | |
| JP2017218912A (en) | Piston cooling device | |
| CN102733947A (en) | Contraposition two-stroke engine | |
| US9121335B2 (en) | System and method for an engine comprising a liquid cooling system and oil supply | |
| JP2008240613A (en) | Engine cooling system and engine waste heat recovery system | |
| KR102132107B1 (en) | Internal combustion engine | |
| CN102235224A (en) | Internal combustion engine with liquid cooling | |
| CN104421034A (en) | Cylinder assembly for a reciprocating piston combustion machine and cooling method | |
| CN103998756A (en) | Cylinder liner and cylinder head for internal combustion engine | |
| KR20140123547A (en) | Piston with supplemental cooling gallery and internal combustion engine therewith | |
| KR102525744B1 (en) | Regenerative cooling system | |
| JP2015508140A (en) | Piston with improved cooling cavity | |
| JP5564206B2 (en) | Cylinder head structure having valve cooling device and valve oiling device | |
| CN106194474B (en) | Use the aluminum one-piece cylinder engine of portion's central flow supply formula water jacket between cylinder holes | |
| CN101560914B (en) | Engine with air-suspending sealing ring | |
| CN102337957A (en) | Novel liquid cooling motorcycle cooler | |
| JP2007247545A (en) | Variable compression ratio internal combustion engine | |
| CN101649779A (en) | Suspended piston engine | |
| WO2015072175A1 (en) | Exhaust valve operating mechanism, diesel engine, and method for cooling exhaust valve of exhaust valve operating mechanism | |
| CN104653324A (en) | High-wear-resisting air cylinder sleeve | |
| CN103670772A (en) | Cylinder liner for a stroke piston combustion engine | |
| CN101566097A (en) | Suspension piston engine | |
| JP2003074409A (en) | Cylinder liner structure of internal combustion engine | |
| CN104712451A (en) | Engine block group and engine with same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150318 |
|
| WD01 | Invention patent application deemed withdrawn after publication |