• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A method and plant for dosing lubricating oil in 2-stroke diesel engines are described. An application thereof is also described. The method comprises steps for delivering lubricating oil under pressure from a lubricating oil reservoir via a pressure lubrication system to injectors located in the walls of the cylinders. A number of injectors are used, each designed to inject a dosed amount of lubricating oil into each cylinder. The method further comprises the steps of establishing data indicating temperature in cylinder liner, - establishing data indicating temperature of lubricating oil in the lubricating oil reservoir, - storing said temperature data for cylinder liner and lubricating oil in a computer, - establishing at least one temperature control unit controlled by the computer and associated with the supplied lubricating oil for establishing a temperature control of the lubricating oil prior to injection into the cylinder, so that a uniform injection is established independent of the temperature of the cylinder liners.
    公开号:DK201670169A1
    申请号:DKP201670169
    申请日:2016-03-23
    公开日:2016-12-12
    发明作者:Rathesan Ravendran
    申请人:Hans Jensen Lubricators As；
    IPC主号:
    专利说明:

    Method and plant for dosing lubricating oil in cylinders, preferably in 2-stroke diesel engines and using such method and systems
    FIELD OF THE INVENTION
    The present invention relates to a method for dosing lubricating oil in cylinders, preferably in 2-stroke diesel engines, for example ship engines, which method comprises steps for; - supply of pressurized lubricating oil from a lubricating oil reservoir via a pressure lubrication system to injectors located in the walls of the cylinders, using a plurality of injectors, each arranged to inject a dosed amount of lubricating oil into each cylinder - establishing data indicating temperature of the lubricating oil in the injector, in the cylinder liner or in the injector or a combination thereof, - storing said temperature data in a computer, - establishing at least one temperature control unit controlled by the computer, which is in connection with the supplied lubricating oil for establishing a temperature control of the lubricating oil before injection into the cylinder.
    The invention further relates to a system for dosing lubricating oil in cylinders, preferably in 2-stroke diesel engines, for example ship engines, which plant - a lubricating oil reservoir, - a pressure lubrication system connected to the lubricating oil reservoir - injectors connected to the pressure lubricating system and which the walls of the cylinders, using a plurality of injectors, each arranged for injecting a dosed amount of lubricating oil into each cylinder, the lubricating oil being supplied under pressure from the pressure lubrication system to the injectors, - measuring units for establishing data indicating the temperature of the lubricating oil in the injector; - the computer for storing said temperature data, - at least one temperature control unit controlled by the computer, which is in connection with the supplied lubricating oil for establishing a temperature control of the lubricating oil before injection into the cylinder for impact of lubricating oil viscosity, so that a uniform injection is established.
    The invention further relates to an application of the method or plant to a pressurized lubrication system where injectors are connected to a common oil supply line having constant supply pressure.
    BACKGROUND OF THE INVENTION In conventional cylinder lubrication systems, mainly for large 2-stroke diesel engines, central pressure lubrication systems may be used which may comprise one or more lubricators, each providing lubrication of locations on a single or multiple cylinders, i. by applying quantities of oil under pressure through respective connecting lines to the various sites to be lubricated, at relevant time intervals. See, for example, DK / EP 0678152. These relevant intervals can typically be when the piston rings are positioned opposite the relevant lubrication site during the compression stroke as the piston moves upward.
    The lubricators are traditionally designed as pump units mounted in close proximity to their respective cylinders, which are connected to a lubricating oil reservoir and to lubricating points in the form of oil injectors at various locations of the cylinder wall. Each pump unit comprises a plurality of piston pumps which supply different lubrication points with oil and which are driven by a common, rotary control shaft with attached lugs. In the rotation of the shaft, the camshafts interact with pressure heads on respective axially displaceable pistons spring-loaded in the direction of the steering shaft, so that the pistons, during rotation of the shaft, will perform reciprocating movements to actuate the piston pump pistons.
    Lubricators have for a number of years worked under the operating condition that the discharge pressure from the piston pumps should not be very high, as it is a fixed standard that the oil must be injected into the cylinder during the upward return stroke of the motor piston, ie. during the compression process, but before the subsequent work stroke of the ignited combustion. Hereby it has been relevant to work with injection or pump pressures of the order of up to 10 bar.
    A pressure lubrication system may also be provided as a lubrication system for a plurality of cylinders. Each cylinder is equipped with a plurality of injectors connected to a common lubricating oil supply line having a constant supply pressure, e.g. in the order of 30 - 100 bar. The supply pressure is supplied by a hydraulic pump unit which is supplied from a lubricating oil reservoir. The pump station may include pumps, filters, check valves which prevent the lubricating oil from flowing back through a stationary pump.
    In recent years, it has been proposed to increase the efficiency of the lubrication by injecting the oil through pressure spray nozzles to obtain a spray lubrication during the upward movement of the piston. Hereby, however, the oil is supplied at a much higher pressure to ensure a desired atomization through pressure atomizing nozzles, e.g. a pressure of up to 100 bar or more. Thus, two-stroke marine diesel engines are known where SIP injectors manufactured by Hans Jensen Lubricators are used for cylinder lubrication.
    The lubricating oil is sprayed into the engine's flushing air, whereby the oil is distributed in a thin and even layer on the cylinder wall. Unlike other lubricating oil injectors on the market, the SIP injectors have the advantage of achieving a more optimal coverage of the top of the cylinder wall, where the need for cylinder lubrication is greatest.
    The injection pattern is, for traditional injection systems, largely controlled by the design of the injection nozzle, the inertia of the liquid and the properties of the liquid.
    The Ohnesorge diagram shown in FIG. 4, shows the experimental correlation between these factors expressed by Reynold number (Re) and Ohnesor number (Z).
    Where u is the velocity of the liquid, D is the size of the nozzle hole, p is the density of the liquid, μ is the viscosity of the liquid and σ is the surface tension of the liquid.
    There are two mechanical ways in which the injection pattern of the SIP valve can be changed, either the design of the nozzle can be changed or the delivery pressure of the cylinder oil can be changed.
    The delivery pressure is adjusted by changing the characteristics of the spring in the SIP valve. Once these parameters are determined, it is not possible to change the injection pattern without manual intervention.
    Surface tension, density and viscosity are roughly the same for commercial cylinder oils. However, viscosity, in contrast to surface tension and density, is particularly dependent on the temperature of the oil.
    The viscosity of a wide range of commercial cylinder oils has been empirically measured and determined that the viscosity can be described by Arrhenius equation, that is, as a function of temperature (T) by Equation 3.
    This equation shows that the viscosity of the cylinder oil decreases exponentially with increasing temperature. Therefore, according to the Ohnesorge diagram, the temperature of the cylinder oil will have a significant effect on the injection pattern.
    FIG. 5 shows the effect the temperature has on the viscosity of several different lubricating oils. There is a drastic decrease in viscosity in the range between 40 and 300 ° C. At temperatures above 100 ° C, it is seen that the curve flattens out and that temperature change results in only a very limited change in viscosity.
    Compared to the two aforementioned methods of changing the injection pattern, temperature control will be a more flexible solution. In Sigurdsson, E. et al., 2014. '' Numerical analysis of the scavenge flow and convective heat transfer in large two-stroke marine diesel engines ''. Applied Energy, 123, pp. 37-46, it is mentioned that the cylinder lining temperature at the cylinder head is approx. 250 ° C and there are approx. 50 ° C. From cylinder head to flush gates, the temperature decreases with a second-degree polynomial.
    The injectors in the cylinder wall will have the same temperature as the location of the casings where the injector is located.
    Thus, there is a great variation in the temperature of the injectors and thus also the temperature of the lubricating oil injected by the injectors. These temperature deviations affect the viscosity of the lubricating oil and thus the injection pattern that is established.
    EP 2,484,875 A1 discloses a plant and method of the type mentioned in the introduction. There is no description in this publication of a record of the temperature data for the oil in the lubricating oil reservoir.
    There is a desire to be able to control the injection pattern to ensure uniform and correct lubrication using the least amount of lubricating oil.
    The object of the invention
    It is the object of the present invention to provide a method and a system which allows to avoid disadvantages of disparate and varying temperature in the injected lubricating oil, thereby establishing a uniform injection.
    Description of the Invention
    This is achieved according to the present invention with a method of the type mentioned initially, characterized in that the method further comprises steps for - establishing data indicating the temperature of the lubricating oil in the lubricating oil reservoir, - storing said temperature data in a computer, - controlling the temperature control. of the lubricating oil depending on said temperature in the lubricating oil in the injector, in the cylinder liner or in the injector or a combination thereof and the lubricating oil temperature in the lubricating oil reservoir, the computer controlling the heating / cooling in the temperature control unit to influence the viscosity of the lubricating oil so that a uniform injection is established.
    The plant according to the invention is characterized in that the plant further comprises - measuring units for establishing data indicating the temperature of the lubricating oil in the lubricating oil reservoir.
    The data indicating temperature in the cylinder liner or in the injector or a combination of these are used as an expression of the temperature of the injected lubricating oil. This is used in situations where it is not possible to measure the lubricating oil temperature directly by the injection through the injector. Alternatively, the lubricating oil temperature can be measured directly in the lubricating oil flowing through the injector. Alternatively, a combination of these temperature measurements may be used.
    By regulating the temperature of the lubricating oil in the injectors, it becomes easy to regulate the viscosity of the oil. Thus, being able to control the temperature can create a uniform injection.
    It is important to point out that this is not just a complete atomization. With the invention, with temperature control, it will be possible to control the degree of atomization. Low viscosity will lead to low degree of atomization and high viscosity will lead to high degree of atomization.
    By being able to control the temperature, it will be possible to compensate for uneven and varying temperature in the lubricating oil by making a temperature control, thereby affecting the viscosity of the lubricating oil, thereby creating a uniform injection for each lubricating oil supply. In the present patent application, the term injection is used as an expression of the way in which the lubricating oil is introduced into the cylinder. This can be done with greater or less pressure so that the lubricating oil acts as an atomized spray or as a fully or partially compact jet. Also, the insertion can be done in a way that the oil can almost be said to flow into the cylinder rather than say it is injected into the cylinder.
    The use of a method according to the invention or a plant according to the invention in a pressure lubrication system where injectors are connected to a common oil supply line which has constant supply pressure gives special advantages.
    Furthermore, an advantage is obtained in pressurized lubrication systems where the supply pressure is supplied by a hydraulic pump unit which is supplied with lubricating oil from a lubricating oil reservoir. Since the viscosity is a sign of the internal friction of the liquid, temperature change will in a simple way make it possible to regulate the amount of lubricating oil supplied within a given time interval by the pressure lubricator where injectors are connected to a common oil supply line which has constant supply pressure. Thus, an increased temperature in the injected lubricating oil will cause a lower viscosity. This means that less friction occurs in the lubricating oil and thus a greater amount of lubricating oil can be injected within a given time interval. Thus, in pressurized lubrication systems where the injection time is controlled, it is possible to use the invention to control the amount of lubricating oil injected within the given time interval.
    According to a further embodiment, the method according to the invention is characterized in that the method further comprises steps for establishing an algorithm or a table in the computer for the relationship between the temperature and viscosity of the lubricating oil.
    By establishing an algorithm, the computer can control based on a formal and currently measured values.
    Alternatively, the regulation can also be done by pre-determined empirical coherence figures, which are entered in a table. In both situations, an adjustment of the temperature can be made from the algorithm or table so that a desired viscosity is achieved in the lubricating oil and ensures that a uniform injection pattern is obtained independent of temperature variations in the cylinder liner and in the injectors.
    According to a further embodiment, the method according to the invention is characterized by: - measuring the temperature of the lubricating oil in the injector, in the cylinder liner or in the injector with temperature gauges in the area where the injectors are placed in the walls of the cylinders or with temperature gauges incorporated in the injectors.
    By making a direct measurement of the temperature of the cylinder lining at the injectors or in the injectors themselves, an indirect measurement of the temperature occurring in the injected lubricating oil is obtained. If the temperature meter incorporated in the injectors measures directly on the lubricating oil temperature, a measurement of the temperature occurring in the injected lubricating oil is obtained. Thus, heating / cooling of the lubricating oil can be compensated.
    According to a further embodiment, the method according to the invention is characterized by: - recording the operating conditions of the motor, for example loading of the motor, and using such data as indicating the temperature of the lubricating oil. In some cases, it may be appropriate to use operating parameters, such as engine load in the control. The engine operating conditions will affect the temperature conditions in the cylinder wall. Alternatively, operating conditions such as load can be used in a control to adjust parameters other than the lubricating oil temperature. Thus, the engine load parameter can also be used to adjust a distribution of the lubricating oil over the height of the cylinder wall. It is also possible to use temperature conditions with other operating parameters, such as the cylinder temperature or the exhaust gas temperature.
    According to a further embodiment, the method according to the invention is characterized in that - the temperature control is carried out before the passage of the lubricating oil through the injector, the temperature control unit being arranged in series with the injector, or - the temperature control being carried out during the passage of the lubricating oil through the injector, the temperature control unit being built into the injector. In some cases, it is preferred to place the temperature control unit in series with the injector. For example, this may be necessary for space purposes. In other situations, it is preferred that the temperature control unit is built into the injector. This provides the most precise temperature control in the lubricating oil immediately before it is injected by the injector.
    According to a further embodiment, the method according to the invention is characterized in that the method further comprises steps for recording the current temperature in the lubricating oil by means of temperature gauges in the lubricating oil reservoir.
    By recording the temperature of the lubricating oil in the lubricating oil reservoir, the lubricating oil can be adjusted not only in the injectors, but also in the lubricating oil reservoir. Thus, the oil in the lubricating oil reservoir can be brought to a temperature which is so close to the desired lubricating oil temperature in the injector. This reduces the need for heating / cooling in the temperature control unit provided in connection with the injector. This is done by placing a temperature control unit adjacent to the lubricating oil reservoir. Thus, such a temperature control unit at the lubricating oil reservoir can be used in combination with the temperature control units at the injectors.
    According to a further embodiment, the process according to the invention is characterized in that - heating / cooling in the temperature control unit is carried out by circulating liquid, preferably water which is in heat exchange communication with the lubricating oil, and that - the speed of the liquid circulation is thereby controlled to influence the temperature control. In most larger engines there is a coolant system. Therefore, it would be particularly appropriate to heat / cool with a heat exchange between circulating coolant and the lubricating oil. It is simply possible to make the regulation by regulating the speed of water circulation.
    As an alternative to heating / cooling with water, other liquids can be used, just as gas or electricity can also be used in the temperature control unit.
    According to a further embodiment, the process according to the invention is characterized in that the temperature control of the lubricating oil is carried out within a temperature range between 0 and 250 ° C, preferably between 0 and 100 ° C.
    As discussed earlier, the temperature of the cylinder liner can vary between approx. 50 and 250 ° C. Therefore, a temperature range from 0 - 250 ° C will be an appropriate temperature control range. Furthermore, since it turns out that in the temperature range of 100 - 250 ° C there is not much difference in viscosity, it may be advantageous in special cases to make adjustments only in the temperature range 0 - 100 ° C. In such a situation, it will be assumed that the viscosity at temperature above 100 ° C is comparable to the viscosity at 100 ° C.
    The temperature of the lubricating oil can either be regulated by a unit that heats the oil before passing through the injector or a unit built into the injector.
    According to a further embodiment, the system according to the invention is characterized in that - the temperature control unit is arranged in series with the injector such that the temperature control is carried out before the lubrication of the oil through the injector, or - the temperature control unit is built into the injector so that the temperature control is carried out during the passage of the lubricating oil.
    As discussed above in connection with the method, space considerations may make it convenient to place the temperature control in series with the injector or built into the injector.
    According to a further embodiment, the system according to the invention is characterized in that it comprises temperature gauges in the region where the injectors are placed in the walls of the cylinders for measuring the temperature of the cylinder liner in this area or temperature gauges incorporated in the injectors.
    A temperature meter can simply be placed in the wall of the cylinder or incorporated into the injector. Thus, by measuring the temperature of the cylinder liner at the injector or the temperature of the injector or by measuring the temperature of the lubricating oil in the injector, a very accurate indication of the temperature of the lubricating oil is obtained so that temperature control can be carried out and thus establish uniform injection.
    According to a further embodiment, the plant according to the invention is characterized in that it comprises a heat exchange unit, in which liquid, preferably water is circulated in heat exchange communication with the lubricating oil, thereby establishing heating / cooling in the temperature control unit.
    As discussed above, a heat exchange unit in which circulating water is used is convenient in connection with larger two-stroke engines, as these are often provided with a cooling water system.
    The systems described and illustrated are only examples of a system according to the invention. Thus, the system may be constructed in other ways such as, for example, injectors in the form of injection nozzles comprising a nozzle rod with a valve body slidable therein, such that valve is located in the immediate vicinity of the nozzle opening.
    For functionality, more elements will be needed. Only the essential elements for explaining the invention are discussed.
    The injector can either be provided with an atomizer valve or a valve with one or more jets / compact jets.
    The injector can be made in an embodiment where it is supplied only with pressurized lubricating oil and without return lines. Typical supply pressures of between 30 and 100 bar. Character description
    The invention will then be explained in more detail with reference to the accompanying drawing, in which
    FIG. 1 illustrates one embodiment of a known system,
    FIG. 2 illustrates a first embodiment of a system according to the invention,
    FIG. 3 illustrates another embodiment of a system according to the invention,
    FIG. 4 shows an Ohnesorge diagram showing the experimental relationship between Reynold number (Re) and Ohnesor number (Z); and FIG. 5 shows the relationship between temperature and viscosity for different lubricating oils.
    DETAILED DESCRIPTION OF THE INVENTION 1 FIG. 1 and 2, a plurality of injectors 3 are shown arranged at appropriate intervals in a cylinder liner 5. These injectors are set to open at a certain pressure in an oil line 2 extending from a lubricator 1 to the individual injectors 3.
    At the end of the injector 3 immediately inside the inner cylinder surface is mounted a nozzle 4 with nozzle openings through which the oil is atomized as the pressure in the oil line 2 reaches a certain preset value. Alternatively, the oil can be injected without atomization.
    The oil is supplied to each oil line 2 from the lubricator 1, which consists of a plurality of small pumps, one to each oil line 2 receiving oil from an oil reservoir 7.
    The oil pumps are capable of delivering a metered portion of oil at given time intervals and may, for example, be a traditional timed cylinder lubricator as described in International Patent Application WO 96/09492. These injectors 3 are designed such that, if oil spills occur, a return 6 to the seized oil is provided which returns to the oil reservoir 7. The injectors may be arranged for mechanical or electronic determination of the injection time. J indicates a flow of oil injection from an injector 3, and A indicates the peripheral extent of the region of the cylinder wall, whereas this jet is directed.
    FIG. 2 shows a first embodiment of a system similar to that of FIG. 1 and wherein a temperature control unit 8 is coupled to the oil supply to the injectors 3.
    FIG. 3 shows another embodiment of a system similar to that of FIG. 1 and wherein a temperature control unit 9 is incorporated into the injectors 3.
    The lubricating oil is sprayed into the engine rinsing air, which describes a swirl 12 whereby the oil is distributed in a thin and even layer on the inside of the cylinder wall 5.
    It is also possible to inject lubricating oil into the plunger or under the plunger where there is no rinsing air. This can be done as an alternative or in combination with injection over the piston. In the cylinder wall 5, one or more temperature gauges 13 (only one shown) are mounted in the area of the injectors 3. Temperature gauges 14 (only shown in Fig. 3) are incorporated into the injectors. The temperature gauge 14 can measure the temperature of the injector or the temperature of the lubricating oil injected through the injector or a combination of these temperatures.
    These temperature gauges 13,14 are connected to a computer 10 either via wires (wires not shown) or via wireless communication. In the oil reservoir 7 a temperature gauge 11 is connected which is connected to the computer 10 either via wires (wires not shown) or via wireless communication.
    The computer 10 is connected to the temperature control unit 8/9 either via wires (not shown) or via wireless communication.
    The temperature control unit 8/9 is connected via a conduit 15 to a heater / heat sink 16, so that heating / cooling is established in the temperature control unit 8/9 either by electric / medium heat exchange connection.
    权利要求:
    Claims (13)
    [1]
    A method of dosing lubricating oil in cylinders, preferably in 2-stroke diesel engines, for example ship engines, which method comprises steps for; - supply of pressurized lubricating oil from a lubricating oil reservoir via a pressure lubrication system to injectors located in the walls of the cylinders, using a plurality of injectors each arranged for injecting a dosed amount of lubricating oil into each cylinder, - establishing data which indicates the temperature of the lubricating oil in the injector, in the cylinder liner or in the injector or a combination thereof, - storing said temperature data in a computer, - establishing at least one temperature control unit controlled by the computer, which is in connection with the supplied lubricating oil for establishment. of a temperature control of the lubricating oil prior to injection into the cylinder, characterized in that the method further comprises steps for - establishing data indicating the temperature of the lubricating oil in the lubricating oil reservoir, - storing said temperature data in a computer, - controlling the temperature control of the lubricating oil in dependence on said temperature. in the lubricating oil in the injector , in the cylinder liner or in the injector or a combination thereof and the lubricating oil temperature in the lubricating oil reservoir as the computer controls heating / cooling in the temperature control unit to affect the viscosity of the lubricating oil so that a uniform injection is established.
    [2]
    Process according to claim 1, characterized in that the method further comprises steps for establishing an algorithm or a table in the computer for the relationship between the temperature and viscosity of the lubricating oil.
    [3]
    Method according to claim 1 or 2, characterized in - measuring the temperature of the lubricating oil in the injector, in the cylinder liner or in the injector is carried out with temperature gauges in the area where the injectors are located in the walls of the cylinders or with temperature gauges incorporated in the injectors.
    [4]
    Method according to claim 1 or 2, characterized in - recording the operating conditions of the engine, for example loading of the engine, and using such data as indicating the temperature of the lubricating oil.
    [5]
    Method according to any one of the preceding claims, characterized in that - the temperature control is made before the passage of the lubricating oil through the injector, the temperature control unit being arranged in series with the injector, or - the temperature control being carried out during the passage of the lubricating oil through the injector with the temperature control unit being built into the injector.
    [6]
    Method according to any one of the preceding claims, characterized in that the method further comprises steps for recording the current temperature in the lubricating oil by means of temperature gauges in the lubricating oil reservoir.
    [7]
    Process according to any one of the preceding claims, characterized in that - heating / cooling in the temperature control unit is carried out by circulating liquid, preferably water which is in heat exchange communication with the lubricating oil and that - the speed of the liquid circulation is regulated so as to affect the temperature control.
    [8]
    Process according to any one of the preceding claims, characterized in that - the temperature control of the lubricating oil is carried out within a temperature range between 0 and 250 ° C, preferably between 0 and 100 ° C.
    [9]
    9. Lubricating oil metering systems in cylinders, preferably in 2-stroke diesel engines, for example ship engines, which system - a lubricating oil reservoir, - a pressure lubrication system connected to the lubricating oil reservoir - injectors connected to the pressure lubrication system and housed in the cylinders using a plurality of injectors, each arranged for injecting a dosed amount of lubricating oil into each cylinder, the lubricating oil being supplied under pressure from the pressure lubricator to injectors, - measuring units for establishing data indicating the temperature of the lubricating oil in the injector, in the cylinder liner or in the injector or a combination thereof, - a computer for storing said temperature data, - at least one temperature control unit controlled by the computer which is in connection with the supplied lubricating oil for establishing a temperature control of the lubricating oil before injection into the cylinder to affect the viscosity of the lubricating oil thus that they r a uniform injection is established, characterized in that the plant further comprises - measuring units for establishing data indicating the temperature of the lubricating oil in the lubricating oil reservoir.
    [10]
    System according to claim 9, characterized in that - the temperature control unit is arranged in series with the injector such that the temperature control is made before the passage of the lubricating oil through the injector, or - the temperature control unit is built into the injector so that the temperature control is made during the passage of the lubricating oil through the injector.
    [11]
    Installation according to claim 9 or 10, characterized in that it comprises temperature gauges in the region where the injectors are arranged in the walls of the cylinders for measuring the temperature of the cylinder liner in that area or temperature gauges incorporated in the injectors.
    [12]
    Installation according to claim 9, 10 or 11, characterized in that it comprises a heat exchange unit in which liquid, preferably water is circulated in heat exchange connection with the lubricating oil, thereby establishing heating / cooling in the temperature control unit.
    [13]
    Use of a method according to any one of claims 1-8 or a plant according to any one of claims 9-12 in a pressure lubrication system where injectors are connected to a common oil supply line having constant supply pressure.
    类似技术:
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    同族专利:
    公开号 | 公开日
    EP3433473A1|2019-01-30|
    WO2017162253A1|2017-09-28|
    DK178732B1|2016-12-12|
    EP3433473A4|2019-12-18|
    EP3433473B1|2021-05-05|
    DK3433473T3|2021-08-09|
    JP2017172575A|2017-09-28|
    CN108779691A|2018-11-09|
    KR20180122680A|2018-11-13|
    KR102301897B1|2021-09-14|
    JP6366651B2|2018-08-01|
    CN108779691B|2021-03-23|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DKPA201670169A|DK178732B1|2016-03-23|2016-03-23|A method and installation for metering of lubricating oil in the cylinders, preferably in the 2-stroke diesel engines and the use of such a method and system|DKPA201670169A| DK178732B1|2016-03-23|2016-03-23|A method and installation for metering of lubricating oil in the cylinders, preferably in the 2-stroke diesel engines and the use of such a method and system|
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    PCT/DK2017/050087| WO2017162253A1|2016-03-23|2017-03-23|Method and system for dosing lubricating oil into cylinders, preferably in two-stroke diesel engines, and use of such method and system|
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