CN103422934A - A cylinder lubrication device and method of operating the cylinder lubrication system - Google Patents
A cylinder lubrication device and method of operating the cylinder lubrication system Download PDFInfo
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- CN103422934A CN103422934A CN2013101731141A CN201310173114A CN103422934A CN 103422934 A CN103422934 A CN 103422934A CN 2013101731141 A CN2013101731141 A CN 2013101731141A CN 201310173114 A CN201310173114 A CN 201310173114A CN 103422934 A CN103422934 A CN 103422934A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N13/00—Lubricating-pumps
- F16N13/02—Lubricating-pumps with reciprocating piston
- F16N13/04—Adjustable reciprocating pumps
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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
- F01M1/16—Controlling lubricant pressure or quantity
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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
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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
- F01M1/12—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10
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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
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- 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
- F02F1/18—Other cylinders
- F02F1/20—Other cylinders characterised by constructional features providing for lubrication
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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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
A cylinder lubrication device for a large slow running two-stroke diesel multi-cylinder engine having in each cylinder a reciprocating piston with piston rings that slide on the inner surface of the cylinder liners whereby the cylinder lubrication device provides the inner surface of the cylinder liners with a precisely dosed quantity of cylinder lubrication oil for each reciprocation of the piston via a plurality of injection points that are distributed at equal level around the circumference of a cylinder, the cylinder lubrication device comprises a plurality of piston pumps having a dosing plunger, a common drive including a linear actuator for driving ali of the dosing plungers simultaneousiy, the dosing plungers having a predetermined full stroke between the start position (S) and the end position (E), wherein the diameter of the dosing cylinders is such that the precisely dosed quantity is delivered by moving the dosing plungers over a fraction of the maximum stroke so that the dosing plungers can be moved in part strokes a plurality of times in the direction from the start position towards the end position before the dosing plungers need to be returned to the start position.
Description
Technical field
The present invention relates to a kind of cylinder lubrication device of the two-stroke diesel engine for the large-sized low-speed operation, and relate to a kind of method that operates cylinder lubricating system.
More preferably, the present invention relates to a kind of two-stroke diesel engine cylinder lubrication device for the large-sized low-speed operation, this motor has a plurality of reciprocating pumps, and these reciprocating pumps are driven by shared driver simultaneously.
The invention still further relates to a kind of steam-cylinder lubricator of hydraulic starting, and a kind of method of controlling operation thereof, it is for stipulating according to engine design teacher and being the cylinder oil dosage according to motor operation conditions, load and user's request.
Background technique
Have in the large-sized two-stroke diesel engine field of crosshead, for example, for power station or as prime mover of marine ship, the cylinder of motor and piston need especially accurately and are lubricated on a large scale.Typically, this motor uses the most cheap available fuel operation, and this fuel is heavy oil normally.Heavy oil is to introducing a large amount of particles harmful to motor in cylinder, sulphur for example, and it forms sulfuric acid in combustion process.This internal surface that need to be applied to by the cylinder oil that will have low pH value cylinder liner protects cylinder wall to avoid the corrosion of sulfuric acid to compensate acidity (higher pH) combustion gas composition.Cylinder oil is relatively expensive, and the cylinder oil that is applied to the cylinder liner internal surface consumes during power operation, that is to say at the motor run duration and needs to supply with continuously new lubricant oil.The consumption of cylinder oil is key factor large-sized low-speed operation the in service of two-stroke diesel engine with crosshead.Therefore, need the efficient of engine cylinder and piston and accurately lubricated, thereby guarantee the latter's suitable protection and the minimal consumption of more expensive cylinder oil.
For the motor with the operation of nominal guiding feed rate, especially for large bore engine (600-1200 centimetre of cylinder diameter), the cylinder lubrication oil consumption has represented larger spending, or even the small reduction of each lubricant oil injection dosage, also represented the remarkable saving of the lubrication oil consumption in the normal use of big-block engine.The injection of lubricating fluid is carried out dosage according to engine loading, engine condition and fuel characteristic.Fuel sprays normally regularly, makes to spray with respect to the rotation of motor and be regular when engine piston is through lubricated oiling pin.The oiling pin is evenly distributed on the engine cylinder circumference, and in the predefined phase corresponding to cycle of engine the appropriate position of engine piston position, for example, at the expansion end of combustion gas.During At The Height when engine piston in the oiling pin, lubricating fluid is injected, because this has reduced the risk (if being injected on piston) of your lubricating fluid of burning, and the risk (if lubricating fluid ends under piston) that lubricating fluid is discharged.
Therefore, an object of the present invention is to reduce the consumption of cylinder oil, keep satisfied piston/lining wear rate and maintenance simultaneously or extend the time between adjacent engine maintenance.Reduce lubrication oil consumption and also because effulent reduces, environment is played to positive effect.
DE19743955 discloses a kind of cylinder lubrication device of the preamble according to claim 1.This cylinder lubrication device carries out adjustable length single injection stroke, and the dosage plunger returns to their state position after it.This variable-length stroke seldom reaches the full stroke that the dosage plunger can reach, and therefore for example wearing and tearing of the element of dosage plunger, dosage cylinder and actuator is concentrated on the first portion of injection stroke.
Typical lubriator is based on for every four of motor (or every five or six etc.) rotations, via a plurality of spray site or oiling pin, the lubricant oil of specified quantitative is ejected into to the principle in cylinder.This is normally determined by minimum time, and motor makes the conventional lubrication device be ready to carry out another oiling agent injection after once spraying by this minimum time.In pneumatic system and traditional hydraulic system, this time is determined by the speed limit that was full of again jet chamber before spraying and the control limit of spraying dosage and speed.Therefore, the lubricant oil that makes dosage have certain residual capacity, caused the consumption of lubricant oil to increase.
If expect on the other hand than low consumption, cylinder oil must be in just correct position and time be ejected into cylinder, now best results.For current traditional lubriator, might not be feasible.
Summary of the invention
Under this background, the motor that an object of the present invention is to provide a kind of lubriator and there is this lubriator, it has overcome or has at least alleviated the problem of prior art.Another object of the present invention is to provide a kind of alternative steam-cylinder lubricator and the method that operates this steam-cylinder lubricator.
This purpose is that the cylinder lubrication device by a kind of two-stroke diesel multicylinder engine for the large-sized low-speed operation is provided is realized, there is a reciprocating piston in each cylinder of motor, this piston has the piston ring slided on the internal surface of cylinder liner, the cylinder lubrication device is for the back and forth each of piston or often a plurality of reciprocal thus, the internal surface that is cylinder liner via a plurality of spray site provides the cylinder oil of accurate dosage, these spray site around the cylinder circle distribution at the equal height place, the cylinder lubrication device comprises a plurality of reciprocating pumps, reciprocating pump has in the dosage cylinder between initial position (S) and final position (E) mobile slidably dosage plunger, shared driver, it comprises that, for drive the linear actuators of whole dosage plungers simultaneously, this dosage plunger has the predetermined full stroke between initial position (S) and final position (E), wherein the full stroke of the diameter of dosage cylinder and dosage plunger is so set, by being moved in the sub-fraction of maximum stroke, the dosage plunger carries accurate dosage, so that, before the dosage plunger need to turn back to initial position, described dosage plunger can repeatedly move towards the direction of final position from initial position in pratial stroke.
By the diameter of selection dosage cylinder and the length of full stroke, displacement volume namely, make the sub-fraction of full stroke corresponding to single dosage, become possible, can utilize a plurality of pratial stroke operation cylinder units before needs are returned to/recharge stroke.Like this, the dosage plunger will always carry out full stroke on both direction, even on injection direction, full stroke is to be realized by a plurality of pratial strokes.Therefore, to the wearing and tearing of dosage plunger, to the wearing and tearing of dosage cylinder, and, to the wearing and tearing of actuator and driving mechanism, be evenly distributed on whole length of stroke, thereby increased the working life of cylinder lubrication device.
In one embodiment, shared driver comprises double-action hydraulic or electric actuator, double-action hydraulic or electric actuator comprise the first hydraulic pressure or electric actuator and the second hydraulic pressure or electric actuator, the first hydraulic pressure or electric actuator are for the dosage plunger is being moved from initial position towards the direction of final position, and the second hydraulic pressure or electric actuator are for making the dosage plunger move towards the direction of initial position from final position.
By return to/again fill stroke for the actuator setting, than the helical spring used in the cylinder lubrication device of prior art, return stroke can be realized sooner and more reliably.
In one embodiment, shared driver comprises plunger connector, and it is connected to plunger and is set to make the dosage plunger to move in the dosage cylinder simultaneously; The double-action linear actuators, it comprises the first hydraulic linear actuator, for the dosage plunger is being moved from initial position towards the direction of final position, and the second hydraulic linear actuator, for making the dosage plunger, from final position, towards the direction of initial position, moving.
In one embodiment, the cylinder lubrication device also comprises electronic control unit, electronic control unit is configured to activate the first actuator, so that the dosage plunger is moved in the pratial stroke of variable-length at every turn, be transported to cylinder with the cylinder oil by accurate dosage, and electronic control unit is configured to activate the second actuator, dosage plunger 30 is turned back to its initial position (S) when when the dosage plunger, having reached its final position (E).
In one embodiment, the cylinder lubrication device also comprises position transducer, and position transducer is configured to detect the position of dosage plunger in the dosage cylinder, and communicates with electronic control unit.
In one embodiment, electronic control unit is determined the current demand dosage of lubricant oil, perhaps receive the information about the current demand dosage of lubricant oil, and electronic control unit is configured to by correspondingly activating the first actuator, and make plunger interior movement of distance in the demand dosage of determining or receiving corresponding to lubricant oil in pratial stroke.
In one embodiment, electronic control unit is configured to control based on the motor operation conditions pratial stroke length of dosage plunger, preferably the motor operation conditions based on for each injection event and adjust length of stroke.
In one embodiment, the motion that electronic control unit is measured based on the dosage plunger, determine the dosage plunger had moved how many in last time in pratial stroke, and wherein electronic control unit is in the desired length of the next stroke of determining the dosage plunger, and compensation is for any deviation of last time pratial stroke and expected value.
In one embodiment, the cylinder lubrication device also comprises hydrovalve, it is connected to the first hydraulic linear actuator and is connected to the second hydraulic linear actuator, hydrovalve is configured to optionally the first hydraulic linear actuator is connected to hydraulic power, and is configured to optionally the second hydraulic linear actuator is connected to hydraulic power.
In one embodiment, hydrovalve is switch valve, and wherein, and the time span that electronic control unit is configured to, by the control switch valve, the first hydraulic linear actuator is connected to hydraulic power is controlled the pratial stroke of dosage plunger.
In one embodiment, electronic control unit is configured to when the dosage plunger has reached its final position (E), make switch valve that the second hydraulic linear actuator is connected to hydraulic power (P), so that the action of dosage plunger by the second hydraulic linear actuator turns back to its initial position (S).
In one embodiment, switch valve is configured to the second actuator is connected to fuel tank (T), and meanwhile the first hydraulic linear actuator is connected to pressure source (P), and vice versa.
In one embodiment, hydrovalve is Proportional valve 140, and wherein, electronic control unit is configured to adjust the curve shape of the movement velocity of dosage plunger in pratial stroke.
In one embodiment, the cylinder lubrication device also comprises electronic control unit, and the cylinder lubrication device construction is based on the specific cylinder operation conditions, the speed of the length of control section stroke and/or dosage plunger.
Above-mentioned purpose also can realize by a kind of two-stroke diesel engine (100) with large-sized low-speed operation of crosshead is provided, it comprises a plurality of cylinders, in each cylinder, move back and forth and each includes the piston of at least two piston rings, and cylinder lubrication device as described above.
In one embodiment, electronic control unit is engine control system (ECS) and for the control system of cylinder lubrication device.
Above-mentioned purpose also realizes for the method that operates the cylinder lubrication device by providing a kind of, this cylinder lubrication device is for the two-stroke diesel multicylinder engine of large-sized low-speed operation, be provided with the reciprocating piston with piston ring in each cylinder of this motor, piston ring slides on the internal surface of cylinder liner, thus, the cylinder lubrication device for cylinder at every turn back and forth or often repeatedly reciprocal, the internal surface that is cylinder liner via a plurality of spray site provides the cylinder oil of accurate dosage, and these spray site distribute around cylinder circumference equal altitudes, the cylinder lubrication device has a plurality of reciprocating pumps and a shared driver, each reciprocating pump has the dosage plunger, the dosage plunger moves slidably in the dosage cylinder between initial position (S) and final position (E), and the motion of dosage plunger between initial position (S) and final position (E) formed full stroke, shared driver comprises for drive the linear actuators of whole dosage plungers on the both direction between initial position (S) and final position (E) simultaneously, the method comprises by means of linear actuators moves the dosage plunger a plurality of pratial strokes from initial position (S) to final position (P) simultaneously, for generation of a plurality of cylinder oil injection event, and when the dosage plunger has reached its final position (E), by means of linear actuators, move the configuration plunger a full stroke that turns back to initial position (S) from final position (E) simultaneously.
In one embodiment, the method also comprises the current demand dosage of determining or obtaining lubricant oil, and makes linear actuators at the described dosage plunger of the interior movement of distance corresponding to the described demand for lubricating oil dosage of determining or receiving.
In one embodiment, the method also comprises the motion of measuring dosage plunger in the last time pratial stroke, and when making linear actuators move next pratial stroke, any deviation of compensation pratial stroke last time and expected value, when especially when due to the dosage plunger, arriving at its stroke end, last time, pratial stroke did not meet standard (fell short).
In one embodiment, the mean velocity of dosage plunger during performed last time stroke, by by last time pratial stroke activationary time compare and determine with realized pratial stroke length, and be based on the determined mean velocity of dosage plunger during pratial stroke last time for the activationary time of next pratial stroke.
In one embodiment, the method also comprises the length of adjusting the pratial stroke of dosage plunger in response to the motor operation conditions.
In one embodiment, the method also comprises the length of adjusting the pratial stroke of dosage plunger for each injection event.
In a mode of execution of the method, this cylinder lubrication device also comprises hydrovalve, it is connected to the first hydraulic linear actuator and is connected to the second hydraulic linear actuator, and the method comprises optionally the first hydraulic linear actuator is connected to hydraulic power, and is configured to optionally the second hydraulic linear actuator is connected to hydraulic power.
In one embodiment, the method also comprises this first hydraulic linear actuator of supercharging, so that the dosage plunger moves in the sub-fraction of its whole length of stroke, and supercharging the second hydraulic linear actuator, only when the dosage plunger has reached its final position (E), plunger is returned.
In a mode of execution of the method, hydrovalve is switch valve, and wherein, and the method comprises that the time span that the first hydraulic linear actuator is connected to hydraulic power by the control switch valve controls the pratial stroke of dosage plunger.
In one embodiment, the method comprises the control hydraulic switching valve, make plunger move the stroke of continuous variable-length, these strokes, according to the motor operation conditions and by time pulse is offered to switch valve, are adjusted each injection event in the scheduled time corresponding to predetermined dosage lubricating fluid, to open switch valve.
Top purpose also can realize by the cylinder lubrication device that a kind of two-stroke diesel multicylinder engine for the large-sized low-speed operation is provided, be provided with the reciprocating piston with piston ring in each cylinder of this motor, piston ring slides on the internal surface of cylinder liner, thus, the cylinder lubrication device for cylinder at every turn back and forth or often repeatedly reciprocal, the cylinder oil of accurate dosage is provided for the internal surface of cylinder liner via a plurality of spray site, and these spray site distribute around cylinder circumference equal altitudes.The cylinder lubrication device has a plurality of reciprocating pumps, and each reciprocating pump has in the dosage cylinder mobile slidably dosage plunger; And shared driver, driver comprises for drive the linear actuators of whole dosage plungers simultaneously, and is provided for detecting the position of shared driver or the position transducer of dosage plunger position.The method comprises: the desired length of determining injection stroke, make the desired length of linear actuators injection stroke that the dosage plunger is moved simultaneously, afterwards, the dosage plunger is returned in again filling stroke simultaneously, determine the physical length of the injection stroke carry out by the information from position transducer, and when being identified for the desired length of next injection stroke any deviation of compensation injection stroke last time and expected value.
By measuring injection stroke and compensation last time when the next injection stroke, precision is improved, and the consumption of valuable cylinder oil has obtained reduction.
In the above methods, shared driver in recharging stroke by elastic element driven.
This cylinder lubrication device can adopt the arbitrary feature according to arbitrary mode of execution of above-mentioned motor.In addition, the cylinder lubrication device can be carried out the arbitrary mode of execution in the mode of execution of said method.
To from embodiment, become obvious according to further purpose, feature, advantage and the character of motor of the present invention, lubricating fitting and method.
The accompanying drawing explanation
In the detail hereinbelow part of this specification, the illustrative embodiments shown in reference to the accompanying drawings illustrates in greater detail the present invention, wherein:
Fig. 1 shows the cylinder lubrication device according to one embodiment of the present invention with perspective view;
Fig. 2 a shows by the cross section of the cylinder lubrication device shown in Fig. 1;
Fig. 2 b shows by the cross section of the cylinder lubrication device shown in Fig. 1;
Fig. 3 shows ，Gai cross section, another cross section by the cylinder lubrication device shown in Fig. 1 perpendicular to the cross section shown in Fig. 2;
Fig. 4 a shows the detail drawing of the part of the cylinder lubrication device shown in Fig. 3, and wherein the dosage plunger mediates;
Fig. 4 b shows the detail drawing of the cylinder lubrication device part shown in Fig. 3, and wherein the dosage plunger is in its initial position, and has been shown in dotted line a plurality of random pratial strokes;
Fig. 4 c shows the detail drawing of the cylinder lubrication device part shown in Fig. 3, and wherein the dosage plunger is positioned at its final position;
Fig. 5 has illustrated by the cross section of the cylinder lubrication device according to an embodiment of the invention with schematic diagram;
Fig. 6 has illustrated the cross section of the cylinder of the large-sized two-stroke diesel engine by having crosshead with skeleton diagram;
Fig. 7 shows large-sized two-stroke diesel engine according to an illustrative embodiment of the invention;
Fig. 8 shows another illustrative embodiments of cylinder lubrication device, and
Fig. 9 is the chart of the relation between explanation length of stroke and time of spraying for a series of lubricating fluids.
Embodiment
Below will describe according to motor of the present invention, cylinder lubrication device and spray the detail of carrying out controlling method for the lubricating fluid be ejected in engine cylinder by illustrative embodiments.
The present invention relates to a kind of engine cylinder lubricating fitting 1, it is for crosshead type large two-stroke diesel engine 100, and this motor can form the basic propulsion system of boats and ships or form fixedly electric power generation motor.With reference to Fig. 6 and 7, the part that motor 100 has a cylinder of a plurality of cylinder 100(shows in Fig. 6), typically be setting three to 14 cylinders 110 point-blank, but the cylinder 110 that can there is other layout type or quantity.Each cylinder 110 is provided with the cylinder liner 111 of the internal surface that has formed cylinder 110.In large-sized two-stroke motor 100, cylinder bore (hole) typically between 250mm between 1200mm.Be slidably disposed on the length of stroke of the reciprocating piston 120 in cylinder liner 111, typically arrive in the scope of 3000mm between 800.Thereby, need the surface of lubricated cylinder liner 111 may reach some square metres.Piston 120 is connected to crosshead 124 via piston rod 126.Crosshead 124 is connected to bent axle 130 via connecting rod 128.
Reciprocating piston 120 typically is provided with 3-5 pressure and keeps piston ring 121, and piston ring 121 slides on the internal surface of cylinder liner 111.In Fig. 6, show the piston with three piston rings 121.A purpose of engine cylinder lubrication system is provide on the internal surface of lining 111 and keep lubricating film; to reduce the friction between piston ring 121 and lining 111 internal surfaces, and protection cylinder liner internal surface makes it avoid chemical erosion material in combustion gas.
The cylinder lubrication fluid, for example have in alkalinity additive and the lubricant oil of formed sulfuric acid between heavy oil HFO main combustion period in the firing chamber of cylinder 110, via through the formed cylinder liner lubricating fluid point of cylinder liner 111 or oiling pin 112(quills) and be applied in.Cylinder liner lubricating fluid oiling pin or spray site 112 can be simple outlet (holes), perhaps they can form by nozzle or sparger, or other modes well known in the prior art, and in one embodiment, oiling pin 112 is provided with one-way valve, and it has prevented that waste gas from entering into cylinder oil.Typically, formed a plurality of cylinder liner lubricating fluid oiling pins 112 in cylinder liner 111, for example 4-12, or 4-20, cylinder liner lubricating fluid oiling pin 112 is equally spaced and is arranged as equal height around lining 111, to guarantee evenly to apply lubricating fluid.
In the situation that the certain area of cylinder 110 more or less is tending towards friction, corresponding to this, the concentration of regional cylinder liner lubricating fluid oiling pin 112, can increase respectively or reduce.After spraying, the lubricating fluid sprayed is distributed on lining 111 by piston ring 121.
Structure and operation with large two-stroke diesel engine of crosshead are well-known equally, need in current context, not further illustrate.
Fig. 1 shows the illustrative embodiments of cylinder lubrication device 1.Cylinder lubrication device 1 comprises housing 10, and the actuator 40 that is connected to housing 10.
Fig. 2 a, 2b, 3,4a-4c show the details of the cylinder lubrication device of Fig. 1 with sectional view.A plurality of identical single action piston pumps are arranged in housing 10.Each reciprocating pump comprises the dosage cylinder 29 be formed in housing 10.In the selected cross section of Fig. 2, can not see dosage cylinder 29.In Fig. 3 and 4 selected cross sections, a dosage cylinder 29 is visible.Jet chamber 20 is formed on dosage plunger 30 fronts.
Reciprocating pump preferably is arranged on circular upper (shown in the cross section of the elongated axis perpendicular to dosage cylinder 29), but this is only preferred structure, also can use equally other structures, for example, along straight line or curve or rectangular setting.
Have ten reciprocating pumps in the mode of execution shown in Fig. 1,2a, 2b, 3,4a-4c, it is by 21 demonstrations of ten jet exits in Fig. 1, and these jet exits are formed on the place, top of housing 10.In a preferred implementation, there are 10 reciprocating pumps, but can adopt other quantity, for example from 2 to 12, or even more.
Referring now to Fig. 5 of the schematic diagram that shows cylinder lubrication device 1, can see that each in two reciprocating pumps has dosage cylinder 29.In each dosage cylinder, receive slidably dosage plunger 30.Dosage piston 30 is configured to from jet chamber 20, the lubricating fluid of certain volume is discharged to engine cylinder 110 in injection event, and adopts the lubricating fluid of certain volume to refill jet chamber 20.Therefore, dosage plunger 30 is set to form sealing (at least at plug 30' place) with the inwall of dosage cylinder 29, and can in dosage cylinder 29, move slidably.
All dosage plunger 30 is connected to plunger connector 31 an end, plunger connector 31 comprises thrust plate (trust plate) and the reeded flange of tool, the end of dosage plunger 30 is received in these grooves, thereby plunger connector has formed the part of shared driver, this shared driver can promote dosage plunger 31 for injection stroke, and pulls the dosage plunger for suction stroke.Plunger connector 31 is arranged in connector chamber 32, and connector chamber 32 is positioned at the extension of jet chamber 20, is formed in housing 10.The slip of plunger connector 31 will make whole plungers 30 slide in dosage cylinder 20 separately at them simultaneously.
Thereby first piston 41 causes the motion of plunger connector 31 in connector chamber 32 with respect to the motion of housing 10, this has caused dosage plunger 30 being synchronized with the movement in dosage cylinder 29 separately again.
In the mode of execution shown in Fig. 5, each in these injection channels has the first conduit 11, the first conduits 11 and forms 20 outlet or the discharge orifices of discharging from jet chamber.The first conduit 11 can be formed in the end wall of jet chamber 20, as shown in the figure, or during it can be formed on the sidewall of jet chamber 20 in relative 32De end, connector chamber.The first conduit 11 is connected jet chamber 20 with intermediate conductor 12 separately.
Shown in illustrative embodiments, intermediate conductor 12 laterally is oriented in housing 10 with respect to the longitudinal axis that sprays inner chamber 20.Intermediate conductor 12(and the first conduit 11) play lubricant oil is guided to the dual purpose that 20He Cong jet chamber, jet chamber 20 is guided out lubricant oil, as described below.
The second conduit 13 is connected intermediate conductor 12 separately with injection catheter 14 separately, this has formed and being connected of jet exit 21 separately.
One-way valve 22 is arranged in injection catheter 14, in the second conduit 13 or be arranged between them, in order to prevent, from the material of the cylinder of motor, reflux.Therefore, one-way valve 22 only allows flowing towards jet exit 21.
One-way valve 22 can form in the 22' of chamber being formed between the second conduit 13 and injection catheter 14,, or form in the second conduit 13, or form in injection catheter 14.
Therefore, in the mode of execution shown in Fig. 2, each injection channel comprises the first conduit 11, intermediate conductor 12, the second conduit 13 and injection catheter 14.
In Fig. 2, housing 10 is illustrated and forms single entity or element, but can form by some constituent elementss.Above-mentioned chamber, passage and conduit 11,12,13,14,15,16,17,18,19,20 can form interior molded passage or hole in housing.But they also can or be assembled into by formation such as suitable conduit, pipeline, cylinders.
, may there be 2-4 import 15 in (not shown) in other embodiments, and the corresponding inlet ducts that leads to inlet guide pipe ring 18 16.
The 4th conduit 19 is connected to each in above-mentioned intermediate conductor 12 by inlet guide pipe ring 18, and these intermediate conductors are connected to jet chamber 20 separately by the first conduit 11 again.
One-way valve 23 is arranged in the supply passage between the 4th conduit 19 and intermediate conductor 12, in order to guarantee that lubricating fluid is not back to inlet guide pipe ring 18 from middle conduit 12.One-way valve 23 can be formed in the 4th conduit 19 or be formed in the chamber 23' between the 4th conduit 19 and inlet guide pipe ring 18.
Therefore, each supply passage in shown mode of execution comprises the first conduit 11, intermediate conductor 12, the 4th conduit 19 and shared inlet guide pipe ring 18, the 3rd conduit 17, inlet ducts 16 and the shared import 15 that share.The composite device here shares for whole supply passages.
As mentioned above, intermediate conductor 12 and the first conduit 11 have played lubricant oil 20 have been guided out or lubricant oil is guided to the double duty of jet chamber 20 from jet chamber, thereby have formed supply passage and both parts of injection channel separately separately.Below will further be described.
The import 15 of lubricating fluid supply passage is connected to the pressurized source of lubricating fluid, for example lubricating oil tank.This preferably carries out supercharging by high positive pressure discharge capacity system, in order to supply with for each jet chamber 20 provides identical lubricating fluid, and provides safe surplus, prevents the obstruction of individual injection chamber 20 and connected supply passage.
The one-way valve 23 that is formed on the one-way valve 22 in injection channel and is formed in supply passage can be the ball valve type.Replacedly, the cut-off valve of electronics or hydraulic control or switch valve can be used to replace these one-way valves.
The first and second pistons 41 have caused the motion of the plunger connector 31 in connector chamber 32 with respect to the motion of housing 10, this will cause plunger 30 being synchronized with the movement in jet chamber 20 separately again.The first and second pressure chambers 35,36 are arranged on the opposition side of connector chamber 32.Similarly, the first and second pistons 41,46 are arranged on the opposition side of plunger connector 31.Each sealing in the first and second pistons 41,46 is against the inwall of the first and second pressure chambers 35,36.Therefore, by interchangeable pressurization the first and second pressure chambers 35,36, the plunger connector 51 with plunger 30 can move on the direction contrary with respect to housing 10.This function of cylinder lubrication device 1 is by more detailed description below.First pressure chamber of pressurizeing is connected to fuel tank T by the second pressure chamber simultaneously, make the dosage plunger move on injection direction, and second pressure chamber of pressurizeing is connected to the first pressure chamber fuel tank simultaneously, makes the dosage plunger move returning/recharge on direction.
At a limit position, the plunger 30 of jet chamber 20 is located in its position of maximum extension (E), that is to say that they are in their bottom position place, thereby the plug 30' of plunger 30 is near the first conduit 11, the i.e. outlet/inlet of jet chamber 20.
Fill jet chamber 20 in order to adopt lubricating fluid, hydrovalve 40 pressurization the second pressure chambers 36, and the first pressure chamber 35 is connected to fuel tank, thereby plunger 30(is via plunger connector 31) can on the direction away from the first conduit 11, move, namely in Fig. 5 downwards, for returning/air-breathing/recharge stroke.This will make the pressure decreased in jet chamber 20.One-way valve 22 in injection channel will prevent that lubricating fluid (or other materials) from entering into intermediate conductor 12 from injection catheter 14 and jet exit.In order to compensate the pressure decreased in jet chamber 20, the lubricating fluid that is derived from the pressure feed lubrication fluid source will start to flow from import 15, by inlet ducts 16 and the 3rd conduit 17, and enter into inlet guide pipe ring 18.Lubricating fluid will flow out from inlet guide pipe ring 18, flow through one-way valve 23 in supply passage and the 4th conduit 19 and will flow in intermediate conductor 18, and flow through the first conduit 11 and flow in jet chamber 20.
Thereby inlet guide pipe ring 18 is for being assigned to whole jet chambers 20 by lubricating fluid from import 15.
Preferably, the length of connector chamber 32 is set to the length corresponding to jet chamber 20, thereby in its maximum retraction position (in abutting connection with the rear wall 33 of connector chamber 32) time, plug 30' still in jet chamber 20, and forms tight seals with jet chamber's 20 inwalls when plunger connector 31.
When dosage piston 30 has been retracted into their initial position S and jet chamber 20 when having reached maximum volume, the injection event of lubricating fluid can activate first piston 41 by (by the hydrovalve that the first pressure chamber 35 is connected to pressure source P and the second pressure chamber 36 is connected to fuel tank) and start, to start to make dosage plunger 30 towards the first conduit 11 motions, thus in jet chamber 20 build pressure.This is arranged in discharge the lubricating fluid of jet chamber 20.Like this, lubricating fluid will flow through the first conduit 11 and intermediate conductor 12.
Because the one-way valve in supply passage 23 has prevented that lubricating fluid can flow through by the one-way valve 22 in injection channel the second conduit 13, and flows through injection catheter 14, and flows out by jet exit 21 towards the flowing of inlet guide pipe ring 18 and import 15.From this, lubricating fluid is directed to cylinder liner lubricating fluid point/oiling pin 112 via suitable pipeline.Then, can start to fill another circulation of jet chamber 20.
In another embodiment, electronic control unit 50 is engine control system (ECS).Engine control system has been suitable for receiving the information about engine piston 120 positions and other motor operation conditionss, therefore can be configured to unanimously control therewith cylinder lubrication device 1, for example, based on about engine piston upper dead center (TDC), crank position, the engine speed of calculating with RPM, engine loading, the information of actual fuel consumption or other motors or separate cylinders operation conditions, the for example sulphur content of the HFO at fuel inlet valve place or the sulfuric acid concentration in cylinder, the wearing and tearing of cylinder (signal based on from sensor in cylinder), the temperature of cylinder liner 111, accumulate in the lubricating fluid in cylinder, the alkaline sedimentation gathered, lubricant oil BM, engine loading etc.Basic principle is, the cylinder oil dosage will with fuel in sulphur percentage proportional, and the cylinder oil dosage will be proportional with engine loading.Because engine loading is basically proportional with the fuel quantity that enters into cylinder.The fuel quantity sprayed is also controlled by electronic control unit 50, so this information can obtain for determining needed cylinder oil dosage.If engine electronic control unit and cylinder lubrication electronic control unit are independent unit, about engine loading, about the information of the even needed cylinder oil dosage of sprayed fuel quantity, from engine electronic control unit, be transferred to the cylinder lubrication electronic control unit.
The needed cylinder lubrication oil mass of each circulation depends on the sulphur content of engine loading and fuel according to the rules, but is very accurately known for specific engines, certain loads and special fuel sulphur content.These data are from calculating and being known from test.Therefore, maximum load and during high sulfur content in fuel the maximum dosage of each circulation be known, and can be used for limiting the size of the diameter of whole length of stroke and reciprocating pump dosage plunger 30, thereby even, in these maximum in-cylinder oil consumption situations, may before realizing the whole stroke of dosage plunger 30, there be some pratial stroke Ps.If while for example at fully engine loading and higher sulfur content in fuel 100cc, in each stroke, using cylinder oil, needed, the displacement volume of reciprocating pump be at least 2 to 3 times large, that is to say at least 250cc, preferably at least 5 times large, 500cc at least for example.Preferably, select the diameter of dosage plunger 30, so that the whole stroke produced is suitable for accurately operation together with the linear actuators used.
In mode of execution preferably, first piston 41 is provided with extension part 42, and extension part 42 has the form of bar and has than the cross-section area of first piston 41 or less cross-section area or the diameter of diameter.Extension part 42 extends in position-measurement device 70, and this position-measurement device comprises position transducer 44.Thereby plunger 30 positions in jet chamber 20 can be measured by the position of the extension part 42 in position-measurement device 70.
Preferably, a cylinder lubrication device 1 is served the cylinder of a motor, and the quantity of jet chamber 20 is suitable for the quantity of cylinder liner lubricating fluid point/oiling pin 112, and depends on the size of cylinder.In addition, single engine cylinder can adopt more than a cylinder lubrication device 1.
In one embodiment, when engine piston 120, at least one direction by cylinder liner lubricating point/oiling pin 112 time, electronic control unit 50 is configured to provide lubricating fluid injection at least one times between every a pair of in two pairs of piston rings 121.In one embodiment, when engine piston 120, at least one direction by cylinder liner lubricating point 112 time, electronic control unit 50 is configured to provide lubricating fluid at least one times to spray between every pair of piston ring 121.On be suitable for, in another mode of execution of any mode of execution of Direct function description, electronic control unit 50 is configured to provide lubricating fluid at least one times to spray for each passage (up/down) of engine piston.This is applicable in the mode of execution in a position cylinder liner lubricating point/oiling pin 112 is arranged in cylinder liner 111, during this position engine piston cycle in burn cycle, passes through cylinder liner lubricating point/oiling pin 112 twice.
In another embodiment, cylinder liner lubricating point/oiling pin 112 is arranged in cylinder liner, thereby when piston 120 during in top dead center, cylinder liner lubricating point 112 and pair of pistons ring minimum and that the second minimum ring 121(is minimum) between space align.
Above, preferred lubricating fitting 1 has been described.Yet the lubricating fitting of other types can be used for combining with the present invention equally.Common lubricating fitting must have at least one jet chamber with plunger 20.Jet chamber must have known volume or at least known diameter (or cross section).Must be provided for determining the device of plunger position in jet chamber.
Preferably include the double-action hydraulic piston for the lubricated lubricating fitting 1 of engine cylinder, perhaps the first and second pistons, the first and second piston actuated plunger connector 31 or thrust plates, start a plurality of lubriator-pumps, for example is arranged on the plunger 30 in jet chamber 20.The lubriator pump is arranged as cylinder oil/lubriator fluid is supplied to independent lubricating oiling pin 112, and lubricated oiling pin 112 is arranged in the cylinder liner 111 of engine cylinder 112.
The separate lubricator pump comprises plunger 30, cylinder 29/ jet chamber 20, suction valve or air-breathing tab (suction gab) and the second one-way valve in the pump output terminal mouth.
Hydraulic actuator piston (the first and second pistons 41,46) provides power by control valve 40 by pressure oil, makes actuator piston and plunger connector 31(also can be described as thrust plate) and plunger 30 move and locate or stop at any position with respect to the complete stroke of plunger 30 on one of both direction.
Preferably, the pressure corresponding to the common hydraulic system of motor for the pressure that activates the first and second pistons 41,46.The size of actuator piston (the first and second pistons 41,46) therefore is adjusted.
The position of actuator piston (the first and second pistons 41,46) and/or plunger 30 is measured by position transducer 44.
Lubricating fitting 1 is preferably controlled by switch valve 40, and switch valve 40 is controlled by electronic control unit 50 (electronic control system/control system).
When calibration lubricating fitting 1 by the time, lubricating fitting activates and controls by having according to the set point of ratio pattern curve described below.
This system and lubricating fitting 1 always use the complete stroke of dosage plunger 30, or are almost complete strokes, thus the cylinder oil mass that accurate measurement is sprayed by calculating complete stroke quantity in time.Yet fully stroke is divided into some less pratial stroke Ps, that is to say, for a plurality of parts of the complete stroke of each cylinder oil supply activity.By adopting this principle, the total efficiency of cylinder lubrication device is improved, and wearing and tearing better distribute.Electronic control unit 50 calculates the quantity of complete stroke, in order to amount to conveying oil mass in time.Only after complete stroke, or almost completely after stroke, namely where necessary, the dosage plunger turns back to their initial position (retracted position S fully).The motion control of dosage plunger with the mode of execution that accurate closed loop control was realized in, can use the complete stroke of dosage piston, that is to say, even until final position E effectively remains the length that stroke is less than needed next part stroke.This accurate control and compensation arrive at the deficiency of the pratial stroke of final position (E) fully in lower one-stroke.In thering is the low mode of execution of accurately controlling, time pulse and the switch valve hydraulic pressure of control system based on for activating namely, last minute of can not use this complete stroke if last minute length is less than for the desired length of next part stroke.In this case, controller will be ordered the dosage plunger to turn back to initial position S and be started the next part stroke from initial position.
Full stroke detects by position transducer 44 or independent full stroke sensor 45.
By using complete (or major part of full stroke) stroke of mercury vapour cylinder, in the whole running surface of jet chamber 20, wearing and tearing reach balance (levelled out), thereby have increased the working life of pump.
The angle transducer that lubricating fluid/cylinder oil can be installed according to motor, in any given crankangle, spray, the crankangle to be scheduled to namely, but preferably with the crankangle of the piston 120 that is positioned at spray site/oiling pin 111 fronts corresponding to relevant, thereby cylinder oil is ejected between piston ring 121.
For each individual injection, can adjust emitted dose, thereby for each injection, capable of regulating injection cycle (mS).
The length of the diameter of dosage cylinder 29 (the similarly diameter of dosage plunger 30) and full stroke can preferably be selected, and makes the jet chamber 20 of filling fully comprise enough lubricating fluid/cylinder oils, for a plurality of part injection stroke of engine piston 120.The part injection stroke exact magnitude covered depends on engine loading and cylinder situation.Within limited running-in period, with following normal running (operation) conditions, compare, new cylinder liner needs more lubricant oil basically, thereby determine by the lubricated necessary condition between the trial run period of cylinder liner corresponding to the capacity of the jet chamber of full length of stroke, even thereby, between the trial run period of cylinder liner, full stroke can comprise the pratial stroke over necessary part stroke Ps.
Usually, according to the cylinder lubrication device 1 of mode of execution described above, by following working principle, operate: cylinder lubrication device 1 comprises double-action hydraulic piston or piston 41,46, its drive plunger connector 31(thrust plate) activate a plurality of reciprocating pumps, these reciprocating pumps comprise the dosage cylinder 29,20 with dosage plunger 30 recited above; Cylinder oil is supplied to the independent lubricating oiling pin 112 be arranged in cylinder liner 111.Double-action straight line hydraulic actuator, plunger connector 31 and dosage plunger 30 mechanically connect by interlocking.
Independent reciprocating pump comprises dosage plunger 30, dosage cylinder 29, suction valve or sucks the one-way valve at breach and the delivery port place in pump.
Hydraulic actuator piston or piston 41,46 provide power by the pressurised oil by one or more control valves, make actuator piston 41,46/ plunger connector 31/ dosage plunger 30 move and locate or stop at any position of full stroke at one of both direction.
The actuator oil pressure is that fix or variable according to engine designer regulation and motor operation conditions.
The position of actuator piston 41,46 or plunger 30 is measured by position transducer 44.In the mode of execution shown in Fig. 1-4, sensor 44 is arranged in extension part 42 places of actuator piston 41.
Length of stroke based on measured, control mechanism is considered the length measuring of pratial stroke before, calculates next activationary time Pulse length.This control mechanism considers that the length of next pratial stroke determines whether to turn back to initial position.
The full stroke of the plunger 30 in dosage cylinder 29 is detected by position transducer 44 or independent full stroke sensor 45.
By the full stroke (plunger 30 in cylinder 20) of common use mercury vapour cylinder as much as possible, on the whole service surface of the cylinder 20 of reciprocating pump, the wearing and tearing of reciprocating pump reach balance.Therefore, obtained increase the working life of reciprocating pump.
Cylinder oil can spray with the crankangle of any desired, and independently oil spurts regularly can be according to engine designer regulation and motor operation conditions and by the adjustment of continuous variable.
When starting, this system is carried out the calibration stroke, according to the mechanical end stop of the plunger with respect to cylinder (plunger is arranged as and can moves in a longitudinal direction in this cylinder), utilizes position transducer to determine minimum and maximum value.
Then, control unit 50 moves to its initial position by actuator piston 41,46.
After actuator piston motion has stopped, position transducer 44 is measured actuator piston 41(or plungers 30) physical location.
New time pulse is calculated in measurement based on above-mentioned, namely because pressure changes any deficiency of pratial stroke or excessive last time cause, in stroke subsequently by electronic control unit 50 compensation cylinder oils and hydraulic oil or one of viscosity.
New time pulse has activated control valve 40 in predetermined crank angle, and actuator piston 41,46 moves forward the length of a part of stroke again from its current location, carries out subsequently the another location measurement.
Before the contact mechanical end stop, at calculated stroke last time, be greater than in residue possibility stroke situation, jet chamber 20 is drained against mechanical shutter, and has increased lubricated needed oil mass in next pratial stroke.
In another embodiment, in the situation that calculated next pratial stroke is greater than residue possibility stroke, jet chamber 20 is drained against mechanical shutter, and the dosage plunger turns back to initial position, and has increased lubricated needed oil mass in next pratial stroke.
Two hydraulic actuators or double-action linear hydraulic actuator provide power by the pressurised oil by control valve, make linear actuators/thrust plate/dosage plunger mobile at one of both direction, and location or stop at any position of full stroke.
Fig. 8 shows according to another mode of execution of the cylinder lubrication apparatus and method identical with above-mentioned mode of execution basically of the present invention, and just hydrovalve is ratio 4/3-road valve 140, but its operation is different, as described below.
Lubricating fluid/cylinder oil can be sprayed according to actual needs.Passing ratio hydrovalve 140, operation can comprise:
The ratio that lubricating fluid in each cycle of motor or one or more parts intermittently/cylinder oil sprays forms.
Emitted dose can be adjusted for each individual injection, thereby injection period (mS) can be adjusted for each injection.
In this embodiment, the signal of position transducer is for feedback control loop, and therefore the position of ratio hydrovalve 140 is adjusted by electronic control unit, make the speed of linear hydraulic actuator and position control continuously and exactly by closed loop control method.Therefore, can be accurately and moment control the speed of dosage cylinder oil and the dosage value of cylinder oil.
With reference to Fig. 9, will describe in detail.Back and forth each for the piston 120 of cylinder 110, can realize a series of injections.Thereby each cycle is by injected expectation volume S
DS
D=S
1+ S
2+ ... S
n.
Time t1, the t2 of individual injection, t3...tn and in the cycle time of individual injection be variable.
Therefore, in Fig. 7, corresponding to figure inclination angle (pitch) v=ds/dt of the injection curve of jet velocity v, be variable.
The volume S of expectation
D=S
1+ S
2+ ... S
n, S for example
1+ S
2(twice injection) carried out during piston passes through.Therefore, the mode of execution with ratio hydrovalve makes single lubricated activity be divided into some piecemeal activities, namely, during once the passing through of piston, can carry out two or more lubricant oil and spray.
According to another mode of execution (not shown), driving the actuator of common driver is the double-action linear actuators by power that electric drive motor provides.This mode of execution can be used Linear Double effect electric drive motor, or the electric drive motor of reversible rotation, and it is connected to the mechanism that the rotation of reversible electric rotating drive motor is converted to linear motion.
Whole mode of executions for above-mentioned, be implemented as actuator for return stroke, in order to can make the dosage plunger turn back to quickly its initial position S, that is to say that for example helical spring elastic device is fast than using.
According to another mode of execution (not shown), disclose a kind of for operating the method for cylinder lubrication device, this device is for large-sized low-speed operation two-stroke diesel multicylinder engine, wherein, the dosage plunger turns back to its initial position and again fills their pump chamber after each variable-length stroke.In this embodiment, the cylinder lubrication device basically with top shown in the cylinder lubrication device identical, just the diameter of the length of stroke of dosage plunger and dosage plunger is enough greatly with for a plurality of pratial strokes, that is to say, the maximum displacement of proportioning pump is substantially equal to the single dosage of the needed maximum of correlation engine.The cylinder lubrication device has a plurality of reciprocating pumps, and each reciprocating pump has in the dosage cylinder mobile slidably dosage plunger; Shared driver, it comprises for drive the linear actuators of whole dosage plungers simultaneously, and the position transducer that is arranged as the position of detecting this shared driver or dosage plunger 30.The method comprises: the desired length of determining injection stroke; Make linear actuators make the desired length of dosage plunger (30) movable spray stroke simultaneously; Afterwards, make dosage plunger mobile returning simultaneously simultaneously in again filling stroke; Determine the physical length of the injection stroke of carrying out by the information from position transducer; And when determining the desired length of next injection stroke for injection stroke compensation last time any deviation with expected value.Wherein, shared driver can be driven by elastic element in again filling stroke.
Although top mode of execution is illustrated as the single cylinder piston unit by the first linear hydraulic actuator, be understandable that the first hydraulic actuator alternately comprises the cylinder-piston unit of a plurality of cooperations.Like this equally for the second linear hydraulic actuator, it can comprise some cylinder/piston unit.
For top whole mode of execution, the capacity of the lubriator 1 of assembling will equal or exceed the demand of motor 100.
Therefore, the invention provides various possible design and the improvement of lubrication system.
Instruction of the present invention has many advantages.Different mode of executions or implementation can obtain one or more in following advantages.It should be noted that this is not exhaustively to enumerate, may have other advantages of not describing at this.The advantage that the application instructs is that it is providing larger flexibility aspect design and operation lubrication system.
Although the application's instruction describes in detail in order to illustrate, to know, these details are only for this purpose, in the situation that do not break away from scope those skilled in the art of the application's instruction, can carry out modification.
The term used in claim " comprises " does not get rid of other elements or step.The term used in claim " one " or " one " do not get rid of a plurality of.Uniprocessor or other unit can complete the function of some devices of narrating in the claims.
Claims (27)
1. the cylinder lubrication device (1) for large-sized low-speed operation two-stroke diesel multicylinder engine, there is reciprocating piston (120) in each cylinder (110) of described large-sized low-speed operation two-stroke diesel multicylinder engine, reciprocating piston has the piston ring (121) slided on the internal surface of cylinder liner (111), thus, cylinder lubrication device (1) is constructed to back and forth via a plurality of spray site (112), for the described internal surface of cylinder liner, provide the cylinder lubrication fluid of accurate dosage for described piston (120), these spray site are around the circle distribution of cylinder (110), described cylinder lubrication device (1) comprising:
A plurality of reciprocating pumps, each reciprocating pump has in dosage cylinder (20) between initial position (S) and final position (E) mobile slidably dosage plunger (30);
Shared driver (31), it comprises for drive the linear actuators (41,46) of whole dosage plungers (30) simultaneously;
Described dosage plunger (30), have the predetermined full stroke between described initial position (S) and described final position (E);
It is characterized in that, the diameter of described dosage cylinder and the length of described full stroke are so set, by being moved in the sub-fraction of described maximum stroke, described dosage plunger (30) carries described accurate dosage, so that, before dosage plunger (30) need to turn back to described initial position, described dosage plunger (30) can repeatedly move towards the direction of final position from initial position in pratial stroke.
2. cylinder lubrication device as claimed in claim 1 (1), it is characterized in that, described shared driver comprises double-action hydraulic or electric actuator, double-action hydraulic or electric actuator comprise the first hydraulic pressure or electric actuator and the second hydraulic pressure or electric actuator, the first hydraulic pressure or electric actuator are for the dosage plunger is being moved from initial position towards the direction of final position, and the second hydraulic pressure or electric actuator are for making the dosage plunger move towards the direction of initial position from final position.
3. cylinder lubrication device as claimed in claim 1 or 2 (1), is characterized in that, described shared driver comprises:
Plunger connector (31), it is connected to plunger (30) and is set to make described dosage plunger (30) to move in described dosage cylinder (20) simultaneously;
Double-action linear actuators (41,51,36,46), it comprises:
The first hydraulic linear actuator (41,51), moving from initial position towards the direction of final position for making the dosage plunger, and
The second hydraulic linear actuator (36,46), moving towards the direction of initial position from final position for making the dosage plunger.
4. cylinder lubrication device as described as any one in claim 1 to 3 (1), also comprise electronic control unit (50), it is configured to activate the first actuator (41,51) so that the dosage plunger in the variable-length pratial stroke, move at every turn, be transported to cylinder (110) with the cylinder oil by accurate dosage, and described electronic control unit is configured to activate the second actuator (36,46), for making described dosage plunger (30) turn back to its initial position (S) when dosage plunger (31) has reached its final position (E).
5. cylinder lubrication device as claimed in claim 4 (1), also comprise position transducer (44), and it is set to detect the position of dosage plunger (30) described in described dosage cylinder (20), and communicate with electronic control unit (50).
6. cylinder lubrication device as claimed in claim 5 (1), it is characterized in that, electronic control unit (50) is determined the current demand dosage of lubricant oil or is received the information about the current demand dosage of lubricant oil, and electronic control unit (50) is configured to by described the first actuator of corresponding activation, and make described plunger (30) interior movement of distance in the described demand dosage of determining or receiving corresponding to lubricant oil in pratial stroke.
7. cylinder lubrication device as claimed in claim 6 (1), it is characterized in that, electronic control unit is configured to control based on the motor operation conditions pratial stroke length of dosage plunger (30), preferably the motor operation conditions based on for each injection event and adjust length of stroke.
8. cylinder lubrication device as claimed in claim 7 (1), it is characterized in that, the measured motion of described electronic control unit (50) based on dosage plunger (30), determine that dosage plunger (31) moved how many in last time in pratial stroke, and wherein said electronic control unit (50) is in the next stroke desired length of determining dosage plunger (31), and compensation is for any deviation of last time pratial stroke and expected value.
9. cylinder lubrication device as described as any one in claim 3 to 8 (1), also comprise hydrovalve (40,140), it is connected to described the first hydraulic linear actuator (41,51) and is connected to described the second hydraulic linear actuator (36,46), described hydrovalve (40) is configured to selectively by described the first hydraulic linear actuator (41,51) be connected to hydraulic power, and be configured to optionally described the second hydraulic linear actuator (36,46) is connected to described hydraulic power.
10. cylinder lubrication device as claimed in claim 9 (1), it is characterized in that, described hydrovalve (40) is switch valve, and wherein said electronic control unit (50) is configured to by controlling that described switch valve is connected to the time span of described hydraulic power by described the first hydraulic linear actuator (41,51) and the pratial stroke of controlling described dosage plunger (30).
11. cylinder lubrication device as claimed in claim 10 (1), it is characterized in that, described electronic control unit (50) is configured to when described dosage plunger (30) has reached its final position (E), make described switch valve (40) by described the second hydraulic linear actuator (36,46) be connected to described hydraulic power (P), so that dosage plunger (30) turns back to its initial position (S) by the action of described the second hydraulic linear actuator (36,46).
12. cylinder lubrication device as described as claim 10 or 11 (1), it is characterized in that, described switch valve is configured to the second actuator is connected to fuel tank (T), and meanwhile the first hydraulic linear actuator (36,46) is connected to described hydraulic power (P), and vice versa.
13. cylinder lubrication device as described as any one in claim 9-12 (1), it is characterized in that, described hydrovalve is Proportional valve (140), and described electronic control unit (50) is configured to adjust the movement velocity curve shape of dosage plunger (30) in pratial stroke.
14. cylinder lubrication device as described as any one in claim 1-13 (1), it is characterized in that, electronic control unit (50) and cylinder lubrication device (1) are configured to based on the specific cylinder operation conditions and the length of control section stroke and/or the speed of dosage plunger (30).
15. the large-sized low-speed operation two-stroke diesel engine (100) with crosshead, it comprises:
A plurality of cylinders (110);
Piston (120), it moves back and forth in each cylinder;
Each described piston (120) comprises at least two piston rings (121); And
As cylinder lubrication device in any one of the preceding claims wherein (1).
16. have the large-sized two-stroke diesel engine (100) of crosshead as claimed in claim 14, it is characterized in that, described electronic control unit (50) is engine control system (ECS) and for the control system of cylinder lubrication device (1).
17. the method for the cylinder lubrication device (1) of the two-stroke diesel multicylinder engine moved for large-sized low-speed for operation, there is reciprocating piston (120) in each cylinder (110) of described motor, piston has the piston ring (121) slided on cylinder liner (111) internal surface, thus, cylinder lubrication device (1) for described cylinder at every turn back and forth or often repeatedly reciprocal, the described internal surface that is cylinder liner via a plurality of spray site provides the cylinder oil of accurate dosage, and spray site is around the cylinder circumference and equal altitudes distributes, described cylinder lubrication device (1) has a plurality of reciprocating pumps and a shared driver (31), each reciprocating pump has dosage plunger (30), dosage plunger (30) moves slidably in described dosage cylinder (20) between initial position (S) and final position (E), the motion of described dosage plunger (30) between described initial position (S) and described final position (E) formed full stroke, shared driver (31) comprises linear actuators (36, 41, 46, 51), for on the both direction between described initial position (S) and described final position (E), drive whole dosage plungers (30) simultaneously, described method comprises by means of described linear actuators (36, 41, 46, 51) described dosage plunger (30) is moved a plurality of pratial strokes from described initial position (S) to described final position (P) simultaneously, produce a plurality of cylinder oil injection event, and when described dosage plunger has reached its final position (E), by means of described linear actuators (36, 41, 46, 51) move described dosage plunger (30) a full stroke that turns back to described initial position (S) from described final position (E) simultaneously.
18. method as claimed in claim 17, also comprise the current demand dosage of determining or obtaining lubricant oil, and make described linear actuators in pratial stroke corresponding to the described demand for lubricating oil dosage of determining or receiving apart from the described dosage plunger of interior movement (30).
19. method as claimed in claim 18, also comprise the motion of measuring dosage plunger (30) in the last time pratial stroke, and when making linear actuators (36,41,46, when 51) moving next pratial stroke, any deviation of compensation pratial stroke last time and expected value, especially when because dosage plunger (30) arrives at its stroke end, last time, pratial stroke was non-compliant.
20. method as described as any one in claim 17-19, also comprise the length of adjusting the pratial stroke of dosage plunger (30) in response to the motor operation conditions.
21. method as claimed in claim 20, also comprise the length of adjusting the pratial stroke of described dosage plunger (30) for each injection event.
22. method as described as any one in claim 17-21, it is characterized in that, described cylinder lubrication device (1) also comprises hydrovalve (40), it is connected to described the first hydraulic linear actuator (41,51) and be connected to described the second hydraulic linear actuator (36,46), and described method comprises optionally by described the first hydraulic linear actuator (41,51) be connected to hydraulic power, and be configured to optionally described the second hydraulic linear actuator (36,46) is connected to described hydraulic power.
23. method as claimed in claim 22, it also comprises described the first hydraulic linear actuator (41 of supercharging, 51), so that described dosage plunger (30) moves in the sub-fraction of its whole length of stroke, and supercharging the second hydraulic linear actuator (41,51), only when the dosage plunger has reached its final position (E), to make plunger (30) return.
24. method as described as claim 21 or 22, it is characterized in that, hydrovalve (40) is switch valve, and comprise by controlling that described switch valve (40) is connected to the time span of described hydraulic power by described the first hydraulic linear actuator (41,51) and the pratial stroke of controlling described dosage plunger (30).
25. method as claimed in claim 24, it is characterized in that, the method comprises controls hydraulic switching valve (40), make the stroke of the mobile continuous variable-length of plunger (30), these strokes are adjusted each injection event in the scheduled time corresponding to predetermined dosage lubricating fluid, to open switch valve (40) according to the motor operation conditions and by time pulse being offered to switch valve (40).
26. the method for the cylinder lubrication device (1) of the two-stroke diesel multicylinder engine moved for large-sized low-speed for operation, there is reciprocating piston (120) in each cylinder (110) of this motor, reciprocating piston has the piston ring (121) slided on cylinder liner (111) internal surface, thus, cylinder lubrication device (1) for described cylinder at every turn back and forth or often repeatedly reciprocal, the described internal surface that is cylinder liner via a plurality of spray site provides the cylinder oil of accurate dosage, and spray site distributes around cylinder circumference equal altitudes; Described cylinder lubrication device (1) has a plurality of reciprocating pumps, and each reciprocating pump has in described dosage cylinder (20) mobile slidably dosage plunger (30); And shared driver (31), this driver (31) comprises linear actuators (36,41,46,51), for drive whole dosage plungers (30) simultaneously, and position transducer (44), it is provided for detecting the position of described shared driver or the position of described dosage plunger (30); Described method comprises: the desired length of determining injection stroke, make described linear actuators (36,41,46,51) in the described desired length of injection stroke, make described dosage plunger (30) move simultaneously, afterwards, described dosage plunger (30) is returned in recharging stroke simultaneously, determine the physical length of performed injection stroke by the information that is derived from position transducer (44), and when being identified for the desired length of next injection stroke any deviation of compensation injection stroke last time and expected value.
27. method as claimed in claim 26, is characterized in that, described shared driver is driven by elastic element in recharging stroke described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610059744.XA CN105673125B (en) | 2012-05-15 | 2013-05-10 | Cylinder lubrication device and the method for operating the cylinder lubricating system |
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| DKPA201200636A DK177574B2 (en) | 2012-10-16 | 2012-10-16 | Anordning til smøring af cylindre til en stor langsomt kørende totakts-dieselmotor og fremgangsmåde til anvendelse af cylindersmøringssystemet og stor totakts-dieselmotor med et cylindersmøringssystem |
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| KR (1) | KR101467429B1 (en) |
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| CN104153840A (en) * | 2014-07-02 | 2014-11-19 | 武汉理工大学 | Electronic control cylinder lubricating device |
| CN107075991A (en) * | 2014-07-29 | 2017-08-18 | 汉斯延森注油器公司 | For the method for the two-stroke diesel engine for lubricating large-sized low-speed operation |
| CN107762655A (en) * | 2016-08-17 | 2018-03-06 | 曼狄赛尔公司德国曼柴油机欧洲股份公司的联营公司 | The cylinder lubrication equipment of large-sized two-stroke compression-ignition engine |
| CN111406150A (en) * | 2017-12-07 | 2020-07-10 | 株式会社 Ihi | Engine system |
| CN112930432A (en) * | 2018-10-02 | 2021-06-08 | 汉斯延森注油器公司 | Lubricator pump unit and lubrication system for replacing valve seat to improve large-scale low-speed two-stroke engine and improved lubricator pump unit |
| CN115443371A (en) * | 2020-04-22 | 2022-12-06 | 汉斯延森注油器公司 | Method for lubricating large low-speed marine diesel engine |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153840A (en) * | 2014-07-02 | 2014-11-19 | 武汉理工大学 | Electronic control cylinder lubricating device |
| CN104153840B (en) * | 2014-07-02 | 2016-05-18 | 武汉理工大学 | Electronic control cylinder lubricating arrangement |
| CN107075991A (en) * | 2014-07-29 | 2017-08-18 | 汉斯延森注油器公司 | For the method for the two-stroke diesel engine for lubricating large-sized low-speed operation |
| CN107075991B (en) * | 2014-07-29 | 2019-12-13 | 汉斯延森注油器公司 | Method for lubricating a large two-stroke diesel engine operating at low speed |
| CN107762655A (en) * | 2016-08-17 | 2018-03-06 | 曼狄赛尔公司德国曼柴油机欧洲股份公司的联营公司 | The cylinder lubrication equipment of large-sized two-stroke compression-ignition engine |
| CN107762655B (en) * | 2016-08-17 | 2019-07-23 | 曼能解决方案（曼能解决方案德国股份公司）分公司 | The cylinder lubrication equipment of large-sized two-stroke compression-ignition engine |
| CN111406150A (en) * | 2017-12-07 | 2020-07-10 | 株式会社 Ihi | Engine system |
| CN111406150B (en) * | 2017-12-07 | 2023-02-21 | 株式会社 Ihi | Engine system |
| CN112930432A (en) * | 2018-10-02 | 2021-06-08 | 汉斯延森注油器公司 | Lubricator pump unit and lubrication system for replacing valve seat to improve large-scale low-speed two-stroke engine and improved lubricator pump unit |
| CN112930432B (en) * | 2018-10-02 | 2023-06-23 | 汉斯延森注油器公司 | Replacement of valve seats to improve lubricator pump units and lubrication systems, and lubricator pumps |
| CN115443371A (en) * | 2020-04-22 | 2022-12-06 | 汉斯延森注油器公司 | Method for lubricating large low-speed marine diesel engine |
| CN115443371B (en) * | 2020-04-22 | 2024-05-17 | 汉斯延森注油器公司 | Method for lubricating large low-speed marine diesel engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103422934B (en) | 2016-06-01 |
| KR101467429B1 (en) | 2014-12-01 |
| DK177845B2 (en) | 2017-08-28 |
| DK201300272A (en) | 2013-11-16 |
| DE102013104822A1 (en) | 2013-11-21 |
| KR20130127926A (en) | 2013-11-25 |
| JP2015007430A (en) | 2015-01-15 |
| CN105673125A (en) | 2016-06-15 |
| JP2013238223A (en) | 2013-11-28 |
| CN105673125B (en) | 2018-06-22 |
| JP5612159B2 (en) | 2014-10-22 |
| JP6226837B2 (en) | 2017-11-08 |
| DE102013104822B4 (en) | 2015-05-28 |
| DK177845B1 (en) | 2014-09-15 |
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Address after: Copenhagen Patentee after: Man energy solutions (man energy solutions, Germany Ag) branch Address before: Copenhagen Patentee before: Man Diesel AS |