CN1384274A - Method of injecting lubricant oil into cylinder of internal combustion engine - Google Patents
Method of injecting lubricant oil into cylinder of internal combustion engine Download PDFInfo
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- CN1384274A CN1384274A CN02118872A CN02118872A CN1384274A CN 1384274 A CN1384274 A CN 1384274A CN 02118872 A CN02118872 A CN 02118872A CN 02118872 A CN02118872 A CN 02118872A CN 1384274 A CN1384274 A CN 1384274A
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- lubricant oil
- pump
- injection valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/08—Lubricating systems characterised by the provision therein of lubricant jetting means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- 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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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
A pump 6 is periodically operated to feed lubricant to a volume chamber 15 inside a lubricating pipe reaching a nozzle valve 3 closed at pressure lower than opening pressure. When pressure progressively rises during feeding of the lubricant to the volume 15 chamber from the pump, the lubricant is temporarily stored in the volume chamber. When pressure of the lubricant inside the volume exceeds the opening pressure of the nozzle valve, the stored lubricant is discharged by being sprayed through the nozzle valve 3.
Description
Technical field
The present invention relates to internal-combustion engine, a kind of method for implanting of the cylinder oil of two-stroke cross head internal-combustion engine especially.The oil pump that periodicity starts, a lubricant oil is transported in the lubricant pipe, and this pipe connects the injection valve on delivery side of pump and the lubricating point, when the pressure in the lubricant pipe surpasses predetermined cracking pressure, this injection valve is opened, so that the lubricant oil atomizing is injected in the cylinder.
This method is known from WO 00/28194, wherein explanation, and injection valve in a row distributes around the cylinder sleeve, and the direction of nozzle is to make them that near the cylinder sleeve internal surface of nozzle one section is injected in the lubricant oil atomizing.Use big flow nozzle, for example 10 so that execute cloth to lubricant oil around whole cylinder sleeve.
Background technique
About lubricant oil is transported to nozzle, WO 00/28194 proposes as such problem, and the compressibility of lubricant oil in lubricant pipe makes and correctly carry lubricant oil to become difficult in time.Told about the condition of the lubricant oil atomizing that reaches predetermined, in the middle of carrying, lubricant oil should surpass the injection-valve opening pressure when being equivalent to known common fuel and injecting.When injecting fuel, usually oil mass is carried so fast, and its suitable amount is so big, pressure in the oil pipe between pump and nozzle will be promptly surpasses fuel oil from pump nozzle opening pressure when carrying, therefore oiling begins, amount of fuel is along with being transported to the cylinder from pump continuously, and its used period can be than obtaining cracking pressure 10～50 times of segment lengths when required.
The 7-34837 that cylinder lubrication oil atomization injection problem can be issued from Japan in nineteen ninety-five has further understanding.According to this patent, when fuel injected, the injection valve of lubricant oil from be placed in cylinder head injected.Here, the suitable stroke direction of lubricating pump is connected to the bent axle of internal-combustion engine, so lubricant oil is atomized on the internal surface that is injected into cylinder sleeve when the internal-combustion engine revolution.
Claimant's in 1954 Danish Patent has been described a kind of lubricating oil system No. 81275, the conveying of lubricant oil is intermittent with the cooperating of revolution of internal-combustion engine per minute in this system, so for example be revolution, two at internal-combustion engine change or three lubricating points that lubricant oil are transported to when changeing on the cylinder sleeve internal surface on.Accomplish on time for lubricant oil is fastened to the pass of the conveying of lubricating point and piston motion, controlled shutoff valve is disposed in lubricant pipe at each lubricating point of next-door neighbour.Each lubricated must being lubricated at lubricating point, lubricating pump is just carried the lubricant oil of a accurate measurement, and this part lubricant oil is remained in the lubricant pipe under the low pressure by shutoff valve, and is relative with lubricating point until piston.Just carve at this moment, shutoff valve starts, and lubricant oil is disengaged, and runs out of at lubricating point, and piston ring is executed lubricant oil the circumferencial direction that is distributed in cylinder sleeve there.In lubricant pipe when valve starts, pressure decline occurs, in pipe, a little accumulator volume can be arranged, in this accumulator, make lubricant oil wherein keep the state that is stressed by the spring load piston.In this known class lubrication system, carry lubricant oil with the pressure of several crust.
In contrast, in aforementioned lubricating oil system, lubricant oil is carried with elevated pressures, injects to realize the lubricant oil atomizing.This higher pressure is supplied with a side at lubricant oil and is caused some shortcomings, wherein the fluctuation that causes with regard to the leakage that has the conveying lubricants capacity.And when each cylinder used a large amount of injection valve, this class shortcoming can increase the weight of, because the volume in the lubricant pipe can strengthen pro rata with the conveying lubricants capacity.
Summary of the invention
Target of the present invention provides a kind of method, enables under high pressure to carry reliably the lubricant oil of relative a small amount of.
From this angle, according to being characterised in that of method of the present invention, the closing pressure of injection valve will be lower than its cracking pressure; Lubricant oil is transported to volume between one-way valve and the injection valve by pump through an one-way valve like this, and in this volume, in the time of when lubricant oil is transported to this volume from pump in the middle of, in carrying out property of pressure increase process, lubricant oil just temporarily accumulates; And when lubricating oil pressure in this volume surpassed injection-valve opening pressure, the lubricant oil of accumulation just injected by the injection valve atomizing and is disengaged.
Injection valve has high cracking pressure, is enhanced this high cracking pressure by pressure in the volume of lubricant oil between one-way valve and injection valve of pump conveying.Because lubricant oil contains air in certain amount inevitably, the accumulation of profit oil oil just becomes possibility in this volume, because lubricant oil comprises a certain amount of air inevitably, in the middle of further admitting lubricant oil at this volume, described air is compressed, and the pressure of lubricant oil rises.When the lubricant oil of institute's accumulated number greatly when making oil pressure surpass the cracking pressure of injection valve, injection valve is opened in the lubricant oil atomizing injection cylinder.In the atomizing injection process, the lubricants capacity of being carried depends on the closing pressure of injection valve, and low closing pressure causes between one-way valve and the injection valve that lubricant oil draws off more more than high closing pressure in the volume.In the fuel feeding terminal, one-way valve is with this volume dissengaged positions of remaining valid, thereby lubricant oil must be drained by injection valve.
In one embodiment, lubricant oil is transported to this volume from oil pump through one-way valve mark part, along with the lubricant oil portioning is transported to this volume, wherein pressure just progressively rises, when a lubricant oil of last conveying made lubricating oil pressure in this volume surpass the cracking pressure of injection valve, this moment, lubricant oil injected through the injection valve atomizing.Several by means of lubricating pump starts, and by carrying the realization of the required pressure of lubricant oil, the size of oil pump just can be littler, and still be that an abundant atomizing program is carried the lubricant oil of this total amount.Therefore the leakage region of pump is little, and is then also just few to the receptance of leaking the pressure surge that determines.Accumulate the one-way valve on the lubricant pipe volume fuel feeding terminal of lubricant oil therein, oil-proof basically, lubricant oil is carried temporarily to be interrupted and is not thrown into question between twice startup of pump, because utilize the big superpressure in the lubricant pipe pressure can be kept for a long time.Open at injection valve, and the several times or repeatedly stroke by pump atomizes oil supply and before the amount that lubricant oil has accumulated disengaged in cylinder, for example can progressively finish the foundation of pressure through the rotation of internal-combustion engine several times or repeatedly.
Also can use and irrelevant controlled lubricating pump of internal combustion engine cycle, for example after an intermittent phase, will atomize and inject before the lubricant oil, primer pump once or in frequent succession immediately in the middle of the single revolution of internal-combustion engine, but, still the revolution with oil pump and internal-combustion engine per minute starts pro rata to well, that is to say in an engine speed of being scheduled to a predetermined number of starts.Proportional startup will cause the downward modulation of lubricant oil par in the unit time when engine load descends.
Oil pump is suitable for every atomizing and injects the lubricant oil one-shot 2～30 times, but to be advisable for 10 times at the most.Like this, pump is as long as carry the sub-fraction of lubricant oil total amount.For the lubricant oil that conveying needs quantity, start and to be unprofitable to more than 30 times improve the leakage situation, so generally to keep startup 10 times for well at the most.
In order to use better simply pump, come single part of lubricant oil of self-pumping provide between one-way valve and the injection valve pressure build-up in the volume at 1 to 10 crust for well, be advisable and cling to 2～5.Owing to relate to the pipe volume that a limited amount lubricant oil is transported to nozzle one side closure, the pressure in volume is quite high, and for example 60 crust or when above also can use simple reciprocating pump to carry lubricant oil.
The feed status of lubricant oil may change with the load of internal-combustion engine.In order to overcome cracking pressure, when internal-combustion engine turns round with sub load, pump during preferably than its running at full capacity the number of starts some more.Like this, when sub load, can accept than the gross leak amount, thus pump franchise can be more in design, its life-span is also just longer.
This method can successfully be developed, and under internal-combustion engine fully loaded P% sub load, every kilowatt-hour percent P multiply by lubricants capacity under every kilowatt-hour of lubricants capacity of being carried was greater than at full capacity like this.Lubrication system can be designed to the automatic conversion lubricants capacity of this state, the injection valve that its approach is to use its cracking pressure to descend with cylinder pressure, therefore utilize such fact, promptly in any specific time of the compression stroke of engine cycles, when cylinder pressure will be lower than at full capacity when sub load.
In order to reduce the quantity of injection valve in the single cylinder, injection valve is preferably in a predetermined pressure and opens, and this predetermined pressure is in lubricant oil engine cycle time inner casing pressure when the cylinder atomizing is injected and is within 15～40 crust sections.This superpressure injection lubricant oil that can enough atomize effectively, especially in the time of in pressure is in 30～40 crust sections, atomizing is so effective, and lubricant oil sprays quite far in the cylinder space so that make, thereby imposes suitable equally distributed lubricant oil on the favourable big part of cylinder sleeve internal surface.
When the cracking pressure control lubricant oil atomizing injection closeness of injection valve, during the atomizing injected frequency, thereby promptly each atomizing injection lubricants capacity just can be by the closing pressure control of injection valve.
Though atomizing oiling back pressure increases with the rising of cylinder pressure, injection valve is higher than 40% of internal-combustion engine maximum compression pressure to open to well constantly at such one at this moment cylinder pressure.For piston ring, lubricant oil can successfully atomize and execute the top of cloth at the cylinder running surface, because cylinder sleeve material load maximum here.In the piston upward stroke, cloth lubricant oil is executed in running surface atomizing and carried out laterly, just shortened from carrying out when atomizing by the operation surface of just having lubricated during this period of time up to piston ring.This helps lubricant oil is remained on the top of cylinder sleeve, and needs most lubricated there.
Suitable lubricated in order to be issued in sub load, and the leakage loss in the compensation pumping lubricant oil, every part of lubricant oil quantity that lubricating pump is carried can be adjustable.At internal-combustion engine during with operation at part load, every part of quantity delivered can suitably increase, in the internal-combustion engine with lower rpm under sub load, this is transported to the lubricant oil of same quantity under sub load when enabling as full load in the volume between one-way valve and the injection valve and goes, and removes because of every part of leakage that time of delivery increases under the sub load.
In another embodiment, internal-combustion engine revolution average atomizing injects the lubricants capacity of cylinder under internal-combustion engine fully loaded P% sub load, is less than percent P and multiply by at full capacity the lubricants capacity of internal-combustion engine revolution average atomizing injection cylinder down.Result as pressure build-up in the volume between one-way valve and the injection valve, remove accomplish FINE DISTRIBUTION and effectively atomizing inject outside the lubricant oil, thisly adjust the practice of lubricants capacity, also provide interests on the expense with the form that reduces specific lubrication oil consumption with load.Before atomizing is injected and is discharged, the effective atomizing that foundation by pressure in the lubricant pipe volume obtains is injected, and each nozzle injects suitably a large amount of lubricant oil, lubricant oil is executed on the internal surface that is distributed in cylinder sleeve satisfactorily, and result's lower temperature levels on the cylinder sleeve when operation at part load is used to use less lubricant oil.Whether in this respect, started by the pump several times with less pump and build-up pressure progressively, still utilize big pump to carry and build-up pressure continuously, this is not a key.
In another embodiment, under internal-combustion engine fully loaded P% sub load, the lubricants capacity that each kilowatt-hour of pump carried is greater than the lubricants capacity of being carried of percent P each kilowatt-hour when multiply by at full capacity.As mentioned above, lubricated oil atomization injects that can advantageously to be designed to the portioning that the load at its lubricant oil relies on be self-regualting type.No matter use little pump to start several times and build-up pressure progressively, still utilize big pump to carry and build-up pressure, all indecisiveness effects in this respect continuously by pump.
Description of drawings
Describe the present invention in detail below in conjunction with a few panel height degree schematic figures, wherein:
Fig. 1 is the cylinder side view;
Fig. 2 is a single cylinder of being furnished with 4 injection valves;
Fig. 3 is a cylinder oil oil supply system sketch; And
Fig. 4～7 are the lubrication procedure example.
Embodiment
For simplicity, among the different embodiments that introduced below, identical component use identical label.
An internal-combustion engine, MC type two-stroke cross head internal-combustion engine for example, perhaps large-scale quartastroke engine, its cylinder bore is person more than 22 centimetres, is furnished with cylinder lubricating system.For example, an internal-combustion engine can be provided with 4～28 cylinders.And it is cylinder bore for example can be within 22～120 cm range, but more desirable with 60～100 centimetres.Each cylinder 1 comprises a cylinder sleeve, a cylinder head, and the piston 8 that moves in cylinder sleeve in addition, still has the piston ring 9 that slides on its operation surface 10 along the cylinder sleeve internal surface.
In order to reduce in the wearing and tearing on the two of piston ring and cylinder sleeve, the operation surface should be with oil lubrication, and it realizes that by the injection valve 3 along the cylinder sleeve circle distribution each valve is provided with the needle 11 by spring load, to lean against on the valve seat 12.One or more atomizers hole 13 is arranged in the downstream side of valve seat, and hole drill is on the direction that lubricant oil is injected in atomization process.When injection valve is closing, radially be installed in the effect that valve needle 14 in the valve seat is subjected to the inherent injection valve 3 place's pressure of cylinder, pressure transmits by the atomizer hole.And when injection valve was being opened, big zone was subjected to the effect of inner cylinder pressure on the whole point of needle, this means that valve opening pressure is higher than closing pressure.
Each injection valve 3 is connected with lubricant pipe 4, and this pipe connects pumps 6 through one-way valve 5, and when pump startup, this pump is transported to a lubricant oil in the oil pipe volume 15 that one-way valve 5 and injection valve 3 limited.Lubricant oil is transported to independent pump 6 via conduit 7 under the pressure before pump.Lubrication system has above-mentioned function usually.
In two stroke internal-combustion engine, cylinder 1 can be a uniflow type, wherein the exhaust outlet 16 of waste gas on the cylinder low side imports, and makes progress through cylinder with the mode vortex motion of knowing (Fig. 2 arrow A), and this moment, the outlet valve 17 of cylinder upper end was opened in the gas replenishment process at cylinder next time.
As shown in Figure 2, at the circumferencial direction of cylinder several injection valves are housed, this example is 4.Injection valve 3 is that in the advantage that circumferencial direction distributes equably nozzle can be a same design, and each all supplies with the same area of cylinder oil to the operation surface.Also injection valve can be arranged on the different each other height of cylinder, perhaps change a kind of method, they also can be installed on the cylinder head.The quantity of injection valve 3 depends on the diameter of cylinder, generally is advisable with this quantity of B/10 ± 2, and wherein B is the cylinder aperture with centimetre expression.
Preferably each injection valve is joined a pump 6.Typical case's practice is that some pumps are closed and is single lubricating fitting that on little internal-combustion engine, this device can be the several of internal-combustion engine or the work of all cylinders, and on big internal-combustion engine, this device can be the lubricating point service of single cylinder.Pump piston can drive with mechanically operated camshaft, perhaps uses the electric electromechanics gas drive that is connected with camshaft moving.In the previous case, start and controlled by the machinery on the internal-combustion engine, by chain drive, perhaps camshaft is connected with similar driving between the live axle, and under latter event, then relies on internal combustion engine operation information by electronic control.But preferably by foundation electronic control signal hydraulic starter driven pump piston, for example so-called α lubriator (A1pha Lubricafor) of request for utilization people making.Each starter can have a single pump piston, but the several pump pistons that preferably link to each other with same cylinder are driven in associated movement by single starter.
Figure 3 shows that a routine lubrication system, fuel tank 18 is equipped with cylinder oil in this system, and this oil can be heated device 19 preheatings, will not describe in detail these parts here.Different with large combustion machine system employed every other lubricant oil, cylinder oil is before use without the separator centrifugation.Cylinder oil be generally high additive to sour neutral oil, contain calcium carbonate, its complex chemical compound is sealed into particle, floats on the oil to keep calcium carbonate.And the centrifugation meeting is separated these particles from cylinder oil.The consequence of not carrying out centrifugation is that cylinder oil contains small bubble inevitably.
Priming pump 20 is got to fuel supply duct 22 with lubricant oil through filter 21, tells conduit 7 from this fuel supply line and leads to the starter 25 that has the pump that links to each other with single cylinder 1, and a pump only is shown among the figure.One accumulator 23 is connected with the starter that pump matches, and fills relevant pressure surge with buffering with pump.Pressure surge in 24 buffering conduits 7 of another accumulator.Pump 6 is by screw valve 26 controls, and this screw valve is connected to electric control device (not shown on the figure) through signal conductor.Feedback transducer 27 provides information to control gear, and actuator piston reality is started.Oil returning branch pipe 28 sends back to unnecessary lubricant oil in the oil return conduit 29 that joins with case 18.Pressure to one predetermined value that pressure control device 30 is adjusted in the fuel supply duct, for example, within 1～60 crust scope, representational is 7～20 crust.
As shown in Figure 2, pump 6 can be a reciprocating pump, the advantage of this pump is, the lubricants capacity that transports divides composition at each stroke of pump from volume, and this is to realize under lower priming pump pressure, any minor fluctuations of the lubricant oil air content that is occurred in the practice under this pressure does not have big influence to the lubricants capacity in this volume of being inquired into.
Every startup once, pump 6 is just delivered to the volume 15 of pipe with a cylinder oil through one-way valve 5, this volume communicates with the pressure chamber 31 of injection valve 3.When injection valve was being closed, pressure chamber was limited by nozzle housing, valve seat 12 and needle 11, and this needle is compressed spring 32 and is pressed into valve seat and leans on mutually.Pressure influence pressure chamber inner valve needle in the pressure chamber expose the zone, its cracking pressure is relative with spring force.By a or the many parts of lubricant oil of coming out from pump 6, when so a large amount of lubricant oil were sent to pressure chamber, pressure wherein just was used for needle with the masterpiece greater than spring force, and needle shifts out from valve seat, the lubricant oil of pressurized just flows to the atomizer hole forward simultaneously, sprays in the cylinder.When injection valve was being opened, the pressure in the pressure chamber 31 acted on the transverse cross-sectional area of whole needle, and in the injection valve closed condition, the center region that this pressure does not act on valve seat to be blocked.As in the big result of enable possition lower area, can overcome compressive force less than the pressure of the cracking pressure in the pressure chamber 31 from spring 32, needle is remained on the enable possition.Have only when the pressure in the pressure chamber and drop to closing pressure when following, needle just can change to its closed position of leaning on mutually with valve seat 12, closing pressure is such pressure, and the power from spring 32 under this pressure surpasses the pressure of lubricant oil to needle 11 entire cross section areas.
Pressure spring 32 perhaps produces other power sources of power of closing to needle 11, and the hydraulic coupling in the chamber 33 is for example determining the cracking pressure of injection valve.Hydraulic coupling in spring force or the chamber 33 is adjustable, so that change opening force according to internal-combustion engine reality operation conditions.
The length of lubricant pipe 4 depends on the distance between pump 6 and the injection valve 3.Representational be pipe range in 0.5～8 meter scope, for example 3～5 meters, caliber should be selected like this, make the pipe internal volume just big to the required cylinder oil piezometric of injection valve single startup is gone into this volume.For example, desirable 5 millimeters of the internal diameter of lubricant pipe 4, desirable 4 meters of the length that one-way valve 5 and injection valve are 3, the volume of pipe is 31.4 centimetres as a result
3Experiment shows, for this volume, carries about 0.1 centimetre
3Lubricants capacity, the result is that pressure increases by 5 crust approximately.
When explosive motor started, the pressure in the volume 15 was enhanced the level that is equivalent to injection-valve closing pressure Pc by a series of startups of pump, such as this closing pressure can be in 40～150 crust scopes, and representational is 50～130 crust.These many startups can internal combustion engine start get up or start-up course in carry out.Along with cylinder oil is come by pump 6 continuous conveyings, the pressure in the volume 15 at a time surpasses the cracking pressure Po of injection valve, and lubricant oil is injected into thereupon, drops under the closing pressure Pc until this volume internal pressure.Like this, the lubricant oil injection amount just depends on the size of injection-valve opening pressure and closing pressure difference and volume 15.It is evident that meanwhile the lubricant oil total amount that pump 6 is carried between lubricant oil injection amount and the injection valve restarting is suitable.
Because cylinder oil costs an arm and a leg, the lubricants capacity that each kilowatt-hour consumed that as far as possible reduces the cylinder generation is favourable.Interrelate with the lubricants capacity that is consumed, reach effectively lubricating, it is ideal that injection valve starts an amount of lubricant oil of injection size at every turn, so just can in the best way lubricant oil be transported on the running surface.This means, it is desirable to and all be not lubricated, but would rather the some commentaries on classics of internal-combustion engine only carry out once at the internal-combustion engine revolution, for example second, third, the 4th, the 5th, the 6th, the 7th or the 8th change and to carry out once.
Fig. 4 represents a kind of conveying program, and wherein pump of I. C. engine crankshaft revolution 6 starts once.For example reason is that pump drives startup by camshaft, and it must be driven, and rotates pro rata by the rotation of I. C. engine crankshaft.Every startup once, the pressure in the volume 15 just increase by a step, to the last pressure surpasses the cracking pressure of injection valve during one-shot, lubricant oil is injected into immediately, the pressure in this moment volume drops to closing pressure Pc immediately, thereby new one takes turns supercharging circulation beginning.
Fig. 5 represents another conveying program, and the quantity delivered that will at every turn start generation in pump 6 designs therein is equivalent to injection valve 3 each quantity delivereies of opening in essence.Like this, corresponding to closing pressure Pc, but at a moment that and then will inject lubricant oil, pump 6 starts carries lubricant oil to pressure in the volume 15 in the most of operation process of internal-combustion engine, its quantity makes the pressure in this volume surpass cracking pressure Po, so lubricant oil is injected into.
Also can be with little pump 6, internal-combustion engine with one-period in by pump in frequent succession several times start, reach the pressure build-up of appropriate size.Fig. 6 represents the pressure build-up program that continuous 4 startups are reached, and last the startup makes pressure surpass injection-valve opening pressure.This has brought into play the strong point of pump 6, and this pump is revealed the zone owing to size is little little, but the quantity delivered size is appropriate when starting.
For example the desirable maximum compression of internal-combustion engine is clung to the most desirable with 75～125 within 50～140 crust scopes.When utilizing the injection overbottom pressure to inject, injection-valve opening pressure can surpass real pressure in the cylinder outside valve, and this injects overbottom pressure and for example can cling to the most desirable with 30～70 in 15～150 crust scopes.Desirable overbottom pressure depends on injection properties fully.If wish that it is that the superfine distribution of particulate is vaporific that lubricant oil is got in injection, then should be quite high for reaching the microatomization overbottom pressure.If not so, desire is injected big shape or more continuous post or the fan-shaped lubricant oil of dripping, and this injection better penetrating power is injected by the cylinder air eddy, is transported to safely on the running surface, can inject with big distance from injection valve, overbottom pressure does not just need so high yet.Lubricant oil drips greatly or more continuous column or fan-shaped are injected to be estimated to be and can be provided cylinder oil superior distribution, because their quality are big, drips the motion of less dependence cylinder waste gas greatly, and is insensitive for the variation of this motion.The geometrical shape of nozzle can be used to provide the injection of desired type, and for example, the atomizer bore dia is big, can under identical overbottom pressure, produce than larger oil droplet, and the injection direction of the direction in hole decision lubricant oil.
In the present invention, under overbottom pressure, carry lubricant oil to be called as and spray and inject by injection valve, and no matter whether lubricant oil drips or spray with the vaporific form of the fine distribution of cylinder oil of post or fan-shaped or spheroidal particle with big.
Cracking pressure Po depends on the direction of injection valve on cylinder height.Its reason is that compression pressure increases in the cylinder when piston moves upward.Injection valve is installed high more in cylinder, cracking pressure will be high more obtaining identical overbottom pressure, will elevator be moving thereon carries out before surpassing injection valve at piston if inject.
When injection valve was positioned at the Lower Half of cylinder, cracking pressure Po is not power influence by compression mainly.If opposite, the injection valve position is higher or at the cylinder top, then Bian Dong compressive force will influence the opening force of injection valve, because compression pressure transmits by the atomizer hole, influences the zone of needle in valve seat with the power in the opening direction effect.
This makes compression pressure become the relieving factor of injection, to being described among this Fig. 7.The top dotted line is illustrated in the fluctuation of internal combustion engine cracking pressure Po in the cycle, and stepped solid line is then represented to increase because of the pressure that pump 6 carries lubricant oil to produce in volume 15.Seem that pressure in the volume 15 is strengthened by pump and rises to the level that is higher than minimum cracking pressure Po, this guarantees that reaching upper dead center (TDC) at piston injects lubricant oil before.
Designing one, the lubricant pipe 4 of the caliber of suitable volume 15 can be provided is easy to do.Use short tube as desire, nature can combine pipe and independent auxiliary volume, the preferably formation with the lock chamber that links to each other with pipe or local expansion of pipe of this auxiliary volume.
The closing pressure Pc of injection valve to be serving as suitably in 50%～96% scope of cracking pressure Po, and with cracking pressure 75%～95% for the most desirable.Closing pressure is low, causes bigger deal, and it is long that injection valve starts blanking time, and vice versa.
Injection valve injects lubricant oil and is subjected to effective direction control, and this provides a series of conveying selection schemes for the traditional conveying of the lubricant oil groove on cylinder face under seepage low pressure lubricant oil.Injection valve can be installed in the level that just is higher than on the exhaust outlet 16, make it upwards spray cylinder, this can under low pressure spray, and no matter occur in before or after piston crosses injection valve spraying in the middle of the compression stroke.
Injection valve 3 also can be installed by higher position in cylinder, and for example big flow of lubricant can be aimed at the middle part of cylinder sleeve thereupon about the centre of running surface, perhaps upwards downward high or low zone towards running surface.
Also injection valve 3 can be installed in the top of cylinder sleeve, can be expelled to lubricant oil on the running surface before piston is crossed injection valve this moment.
The possibility that the cylinder oil directivity is injected is carried adaptation cylinder reality needs for lubricant oil freedom is provided.Even so that injection valve is installed, still can change the conveying of lubricant oil on running surface when be provided with through hole on cylinder wall on the cylinder certain level, its approach is to adjust valve, so that to other direction oilings, such as more up or down.
Within the following claims scope, the details of the various embodiments described above can be attached among other embodiments and go.Also can in a cyclic process of internal-combustion engine, implement the program that more countercylinder injects cylinder oil.In addition, injecting program can be different because of the internal combustion engine operation condition, and the lubricants capacity that this point for example can be carried from the foundation engine load changes or learns when changing load, and lubricating there may need interim increase.
Claims (16)
1. one kind is injected cylinder of internal combustion engine (1) with lubricant oil, the method of two-stroke cross head cylinder of internal combustion engine particularly, pump (6) regularly starts, and the lubricant oil of ampoule is transported to lubricant pipe (4), and this pipe connects the injection valve (3) on delivery side of pump and the lubricating point; When the pressure in the lubricant pipe surpassed predetermined cracking pressure, injection valve was opened so that the lubricant oil atomizing is injected in the cylinder, it is characterized in that: injection valve (3) is closed being lower than under the pressure of its cracking pressure; Lubricant oil is transported to volume between one-way valve and the injection valve from pump (6) through one-way valve (5), and in this volume (15), in the time of when lubricant oil is transported to this volume by pump in the middle of, in pressure increase process gradually, lubricant oil is temporarily accumulated; And when the lubricating oil pressure in the volume (15) surpassed the cracking pressure of injection valve, the lubricants capacity that is accumulated was atomized by injection valve (3) and disengages.
2. in accordance with the method for claim 1, it is characterized in that: lubricant oil is divided into several parts by pump (6) and is transported to volume (15) through one-way valve (5), and wherein, along with the lubricant oil of minute composition is transported to this volume, pressure progressively raises; When last a lubricant oil is transported to the lubricating oil pressure that makes in the volume (15) when surpassing the cracking pressure of injection valve, lubricant oil promptly is atomized through injection valve (3).
3. in accordance with the method for claim 1, it is characterized in that: pump (6) starts pro rata with the revolution of internal-combustion engine per minute, for example starts pre-determined number in the internal-combustion engine predetermined number of revolutions.
4. in accordance with the method for claim 2, it is characterized in that: the every atomizing of lubricant oil once, pump (6) starts 2 to 30 times.
5. in accordance with the method for claim 4, it is characterized in that: the every atomizing of lubricant oil is injected once, and pump starts 10 times at the most.
6. according to each the described method in the claim 1 to 5, it is characterized in that: come single part of lubricant oil of self-pumping (6), can make pressure increase by 1 to 10 crust in the volume (15) between one-way valve (5) and the injection valve (3).
7. it is characterized in that in accordance with the method for claim 6: come single part of lubricant oil of self-pumping (6) to make the middle pressure of volume (15) between one-way valve (5) and the injection valve (3) increase by 2 to 5 crust.
8. according to each the described method in the claim 1 to 5, it is characterized in that: in order to overcome cracking pressure, when internal-combustion engine turned round with sub load, pump (6) started more number of times during with running at full capacity than internal-combustion engine.
9. according to any one the described method in the claim 1 to 5, it is characterized in that: when internal-combustion engine was in the sub load of full load percent P, every kilowatt-hour of lubricants capacity more lubricating oil amount was transferred when multiply by at full capacity than percent P.
10. according to any one the described method in the claim 1 to 5, it is characterized in that: inject cylinder (1) internal combustion engine circulation time when the lubricant oil atomizing, open under the predetermined pressure of injection valve in surpassing cylinder pressure 15 to 40 crust scopes.
11. any one the described method according in the claim 1 to 5 is characterized in that: when cylinder pressure be higher than internal-combustion engine maximum compression pressure 40% the time, injection valve (3) starts.
12. any one the described method according in the claim 1 to 5 is characterized in that: every part of lubricants capacity of being carried of lubricating pump (6) is adjustable, and should amount suitably increase when internal-combustion engine turns round with sub load.
13. according to any one the described method in the claim 1 to 5, it is characterized in that: when the sub load of internal-combustion engine fully loaded percent P, the lubricants capacity that internal-combustion engine revolution average atomizing injection cylinder lubrication oil mass is lacked when multiply by at full capacity than percent P is atomized and injects cylinder (1).
14. any one described method according to claim 1 to 5, it is characterized in that: when internal-combustion engine was in the sub load of fully loaded percent P, the lubricants capacity that each kilowatt-hour of pump carried was greater than the lubricants capacity that percent P multiply by each kilowatt-hour when full load.
15. any one the described method according in the claim 1 to 5 is characterized in that: the cracking pressure of injection valve (3) is adjustable.
16. any one the described method according in the claim 1 to 5 is characterized in that: the closing pressure of injection valve (3) is adjustable.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA200100713 | 2001-05-07 | ||
| DKPA200100713 | 2001-05-07 | ||
| DKPA200101734 | 2001-11-20 | ||
| DK200101734A DK176129B1 (en) | 2001-05-07 | 2001-11-20 | Method of atomizing lubricating oil in a cylinder of an internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1384274A true CN1384274A (en) | 2002-12-11 |
Family
ID=26069014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02118872A Pending CN1384274A (en) | 2001-05-07 | 2002-04-29 | Method of injecting lubricant oil into cylinder of internal combustion engine |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP3898083B2 (en) |
| KR (1) | KR20020085808A (en) |
| CN (1) | CN1384274A (en) |
| DE (1) | DE10220015A1 (en) |
| DK (1) | DK176129B1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749530A (en) * | 2008-12-16 | 2010-06-23 | 上海宇航***工程研究所 | Method for confirming vacuum grease adding amount in spatial mechanism bearing |
| CN1944966B (en) * | 2005-09-23 | 2011-02-09 | 瓦特西拉瑞士股份有限公司 | Cylinder lubricating device for an reciprocating piston combustion engine |
| CN102628383A (en) * | 2011-02-04 | 2012-08-08 | 瓦锡兰瑞士公司 | Cylinder lubrication device |
| CN103470386A (en) * | 2013-09-30 | 2013-12-25 | 庄景阳 | Lubricating device of on-off and braking asynchronous control cylinder |
| CN103628948A (en) * | 2013-12-23 | 2014-03-12 | 北京理工大学 | Jet lubrication device for free piston type internal combustion engine generator |
| CN105888766A (en) * | 2008-10-16 | 2016-08-24 | 瓦特西拉瑞士股份有限公司 | Large diesel engine |
| CN111406150A (en) * | 2017-12-07 | 2020-07-10 | 株式会社 Ihi | Engine system |
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| CH697582B1 (en) * | 2004-03-09 | 2008-12-15 | Schaller Automation | Method and apparatus for controlling the supply of lubricant to the cylinder running surface of a piston of a reciprocating motor. |
| WO2007132071A1 (en) * | 2006-05-12 | 2007-11-22 | Mrcc Industries Sas | Lubrication and cooling of rotary piston engines |
| JP4893467B2 (en) | 2007-05-18 | 2012-03-07 | 株式会社Ｉｈｉ | Method and apparatus for preventing scuffing of marine internal combustion engines |
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| EP3368751B1 (en) * | 2015-10-28 | 2022-01-26 | Hans Jensen Lubricators A/S | A large slow-running two-stroke engine with sip lubricant injector |
| DK179750B1 (en) * | 2017-12-13 | 2019-05-07 | Hans Jensen Lubricators A/S | Large slow-running two-stroke engine and method of lubri-cating such engine, as well as an injector with an electric pumping system for such engine and method |
| 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 |
-
2001
- 2001-11-20 DK DK200101734A patent/DK176129B1/en not_active IP Right Cessation
-
2002
- 2002-04-29 CN CN02118872A patent/CN1384274A/en active Pending
- 2002-05-02 JP JP2002130267A patent/JP3898083B2/en not_active Expired - Lifetime
- 2002-05-04 DE DE2002120015 patent/DE10220015A1/en not_active Withdrawn
- 2002-05-06 KR KR1020020024671A patent/KR20020085808A/en not_active Application Discontinuation
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1944966B (en) * | 2005-09-23 | 2011-02-09 | 瓦特西拉瑞士股份有限公司 | Cylinder lubricating device for an reciprocating piston combustion engine |
| CN105888766A (en) * | 2008-10-16 | 2016-08-24 | 瓦特西拉瑞士股份有限公司 | Large diesel engine |
| CN101749530A (en) * | 2008-12-16 | 2010-06-23 | 上海宇航***工程研究所 | Method for confirming vacuum grease adding amount in spatial mechanism bearing |
| CN101749530B (en) * | 2008-12-16 | 2013-12-04 | 上海宇航***工程研究所 | Method for confirming vacuum grease adding amount in spatial mechanism bearing |
| CN102628383A (en) * | 2011-02-04 | 2012-08-08 | 瓦锡兰瑞士公司 | Cylinder lubrication device |
| CN102628383B (en) * | 2011-02-04 | 2016-08-17 | 瓦锡兰瑞士公司 | Cylinder lubrication device |
| CN103470386A (en) * | 2013-09-30 | 2013-12-25 | 庄景阳 | Lubricating device of on-off and braking asynchronous control cylinder |
| CN103470386B (en) * | 2013-09-30 | 2016-01-13 | 庄景阳 | The lubricating fitting of clutch brake asynchronous controlling cylinder |
| CN103628948A (en) * | 2013-12-23 | 2014-03-12 | 北京理工大学 | Jet lubrication device for free piston type internal combustion engine generator |
| CN103628948B (en) * | 2013-12-23 | 2015-11-18 | 北京理工大学 | A kind of free piston IC generator jet lubrication device |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| DK200101734A (en) | 2002-11-08 |
| JP2002349224A (en) | 2002-12-04 |
| DK176129B1 (en) | 2006-09-11 |
| KR20020085808A (en) | 2002-11-16 |
| JP3898083B2 (en) | 2007-03-28 |
| DE10220015A1 (en) | 2002-11-21 |
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