EP3377737B1 - Agencement et procédé de régulation de pression - Google Patents

Agencement et procédé de régulation de pression Download PDF

Info

Publication number
EP3377737B1
EP3377737B1 EP15802178.2A EP15802178A EP3377737B1 EP 3377737 B1 EP3377737 B1 EP 3377737B1 EP 15802178 A EP15802178 A EP 15802178A EP 3377737 B1 EP3377737 B1 EP 3377737B1
Authority
EP
European Patent Office
Prior art keywords
pressure
valve
control
line
control valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15802178.2A
Other languages
German (de)
English (en)
Other versions
EP3377737A1 (fr
Inventor
Ilari HYÖTY
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wartsila Finland Oy
Original Assignee
Wartsila Finland Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wartsila Finland Oy filed Critical Wartsila Finland Oy
Publication of EP3377737A1 publication Critical patent/EP3377737A1/fr
Application granted granted Critical
Publication of EP3377737B1 publication Critical patent/EP3377737B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • 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
    • F01M1/10—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters
    • 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
    • F01M1/10—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters
    • F01M2001/105—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters characterised by the layout of the purification arrangements
    • F01M2001/1071—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters characterised by the layout of the purification arrangements comprising oil tanks

Definitions

  • the present invention relates to a pressure regulating arrangement for a lubricating system of a piston engine in accordance with the preamble of claim 1.
  • the invention also concerns a method for regulating pressure in a lubricating system of piston engine, as defined in the other independent claim.
  • a pressure relief valve system for use in a fluid lubrication system in an engine, the pressure relief valve system comprising: a pressure relief valve including a housing having a bore having a piston and a spring received therein, the pressure relief valve further including an inlet port for admitting a fluid from a high pressure side of the fluid lubrication system into the bore to one side of the piston to move the piston against the force of the spring and an outlet port for expelling the fluid from the bore once the piston has been moved against the increasing spring force to put the inlet port in communication with the outlet port, the pressure relief valve further including a pilot valve pressure inlet port for admitting fluid into the bore to apply fluid pressure on the piston in a direction opposite the fluid pressure from the inlet port; a pilot valve including a pilot housing having a pilot bore having a pilot piston and a pilot spring received therein, the pilot valve further including a pilot inlet port for admitting a fluid from a high pressure side of the fluid lubrication system
  • An object of the present invention is to provide an improved pressure regulating arrangement for a lubricating system of a piston engine.
  • the pressure regulating arrangement comprises a pressure regulating valve having an inlet that can be arranged in fluid communication with a lubricating oil line where pressure needs to be regulated, an outlet that can be arranged in fluid communication with a pressure release line, and a valve member that is movable between a closed position preventing flow between the inlet and the outlet and an open position allowing flow between the inlet and the outlet, a first pressure-controlled control valve, which is configured to move from a closed position to an open position when a control pressure at the first control valve exceeds a first predetermined limit value, wherein the opening of the first control valve is configured to allow the movement of the valve member of the pressure regulating valve from the closed position to the open position, and a control line that can be arranged in fluid communication with the lubricating oil line for transmitting control pressure to the first control valve.
  • Another object of the invention is to provide an improved method for regulating pressure in a lubricating system of a piston engine, the lubricating system comprising a pressure regulating valve for releasing pressure from a lubricating oil line into a pressure release line, at least two pressure-controlled control valves, each of the control valves being configured to open when a control pressure at the valve exceeds an individual predetermined limit value, wherein the opening of any of the control valves is configured to open the pressure regulating valve.
  • the pressure regulating arrangement comprises a second pressure-controlled control valve, which is configured to move from a closed position to an open position when a control pressure at the second control valve exceeds a second predetermined limit value, which is lower than the first predetermined limit value, wherein the opening of the second control valve is configured to allow the movement of the valve member of the pressure regulating valve from the closed position to the open position, and the pressure regulating arrangement further comprises an actively controllable valve for opening and closing fluid communication between the control line and the second control valve.
  • the method according to the invention comprises the steps of determining a parameter or a set of parameters describing the operating conditions of the engine, based on the parameters, determining at least two different operating conditions requiring different lubricating oil pressures, monitoring the operating conditions of the engine, and in each detected operating conditions of the engine, transmitting control pressure from the lubricating oil line to at least that control valve, which has the lowest predetermined limit value corresponding to at least the required lubricating oil pressure, and preventing transmission of control pressure to those control valves of which predetermined limit values are lower than the required lubricating oil pressure.
  • the pressure level in a lubricating system can be easily lowered from a certain pressure level to a lower pressure level.
  • the pressure levels can be adjusted so that when a first control valve is responsible for the pressure regulation, the oil pressure in the lubricating system can meet the needs of difficult operating conditions of the engine.
  • a second control valve can regulate the pressure and the energy consumption of the lubricating system is reduced.
  • the pressure regulating arrangement comprises a third pressure-controlled control valve, which is configured to open when a control pressure at the third control valve exceeds a third predetermined limit value, which is lower than the second predetermined limit value, wherein the opening of the third control valve is configured to allow the movement of the valve member of the pressure regulating valve from the closed position to the open position, and the pressure regulating arrangement further comprises an actively controllable valve for opening and closing fluid communication between the control line and the third control valve.
  • the pressure in the lubricating system can be lowered to a third pressure level, which is even lower than the second pressure level.
  • the lubricating system can thus be operated at three different pressure levels according to the operating conditions of the engine.
  • valves for opening and closing the fluid communication between the control line and the second and/or the third control valves can be, for instance, solenoid valves. Also a single valve could be used to select which of the control valves are in fluid communication with the control line.
  • FIG 1 a lubricating system of a piston engine.
  • the engine is a large internal combustion engine, such as a main or an auxiliary engine of a ship or an engine that is used at a power plant for producing electricity.
  • the cylinder bore of the engine is at least 150 mm.
  • the rated power of the engine is at least 150 kW per cylinder.
  • the engine comprises six cylinders that are arranged in line, but the engine can comprise any reasonable number of cylinders.
  • the cylinders could also be arranged for example in a V-configuration.
  • the lubricating system is configured to deliver lubricating oil to the components of the engine for lubrication and/or cooling purposes.
  • the lubricating system supplies lubricating oil for instance to the main bearings 2 of the engine, but the lubricating oil can be supplied also to various other places.
  • the lubricating system comprises an oil pump 1, which pressurizes the lubricating oil and feeds it into a lubricating oil line 4, in which the lubricating oil is conducted to the components where the lubricating oil is needed.
  • the lubricating oil is taken from an oil reservoir 6.
  • the oil reservoir is a wet oil sump 6.
  • the engine could also be provided with a dry oil sump, in which case the oil would be taken from a separate tank, into which the oil is introduced from the dry sump.
  • the oil pump 1 produces a constant flow rate at constant engine speed.
  • the oil pump 1 can be, for instance, a screw pump.
  • the lubricating system is also provided with a prelubricating pump 7, which ensures that lubricating oil flow is available also when the engine is started.
  • the prelubricating pump 7 is arranged in parallel with the oil pump 1.
  • the prelubricating pump 7 is electrically driven.
  • An oil cooler 8 is arranged downstream from the oil pump 1 for cooling the pressurized lubricating oil.
  • a by-pass duct 9 is arranged in parallel with the oil cooler 8 for allowing bypassing of the oil cooler 8 when the lubricating oil temperature is low, for instance when the engine is started.
  • a by-pass valve 10 connects the by-pass line 9 to the lubricating oil line 4 on the downstream side of the oil cooler 8.
  • the by-pass valve 10 is used for selectively guiding the lubricating oil flow from the oil pump 1 either through the oil cooler 8 or through the by-pass line 9.
  • the by-pass valve 10 can be temperature-controlled for automatically keeping the lubricating oil temperature within the appropriate temperature range.
  • a filter 11 is arranged downstream from the by-pass valve 10.
  • the filter 11 is an automatic backflushing filter, which is connected to a backflushing line 12. Automatic backflushing of the filter 11 ensures proper functioning of the filter 11 and minimizes the need for maintenance.
  • the backflushing line 12 is provided with a centrifugal filter 13, which removes particles from the lubricating oil before the oil is returned to the oil sump 6.
  • the backflushing line 12 is further provided with a three-port valve 14, which allows bypassing of the centrifugal filter 13 when needed.
  • a pressure release line 15 is connected to the lubricating oil line 4 between the oil pump 1 and the oil cooler 8.
  • the pressure release line 15 is connected to the lubricating oil line 4 immediately after the oil pump 1.
  • the pressure release line 15 is provided with a pressure regulating valve 16, which is controlled on the basis of the pressure in the lubricating oil line 4.
  • the pressure regulating valve 16 opens and allows lubricating oil flow from the lubricating oil line 4 via the pressure release line 15 into the oil sump 6 reducing thus the pressure in the lubricating oil line 4.
  • the control pressure is transmitted to the pressure regulating valve 16 via a control line 17.
  • the control line 17 is connected to the lubricating oil line 4 downstream from the main bearings 2 of the engine.
  • the pressure in the lubricating system is thus controlled on the basis of the pressure detected in the lubricating oil line 4 after the main bearings 2.
  • the point where the control line 17 is connected to the lubricating oil line 4 is a pressure monitoring point. Due to the flow resistance in the lubricating system, the pressure after the main bearings 2, i.e. at the pressure monitoring point is lower than the pressure immediately after the oil pump 1.
  • the pressure of the lubricating system could also be monitored at some other point of the lubricating system instead of the point shown in figure 1 .
  • the most suitable point for the connection of the control line 17 depends on the configuration of the lubricating system and the lubrication and/or cooling needs of different components of the lubricating system.
  • the lubricating system described above is only an example of a lubricating system where a pressure regulating arrangement according to the invention can be used. All the components listed above are not necessary, and on the other hand, the lubricating system can comprise many additional components.
  • the lubricating oil can be used also for cooling purposes, for instance for jet cooling of the pistons of the engine.
  • FIG. 2 shows a pressure regulating arrangement according to an embodiment of the invention.
  • the pressure regulating valve 16 of the lubricating system forms part of the pressure regulating arrangement.
  • the pressure regulating valve 16 comprises an inlet 22 and an outlet 23.
  • the inlet 22 of the pressure regulating valve 16 is in fluid communication with the lubricating oil line 4.
  • the outlet 23 of the pressure regulating valve 16 is in fluid communication with the pressure release line 15.
  • the pressure regulating valve 16 comprises a valve member 24 having a closed position and an open position.
  • valve member 24 In the closed position, which is shown in figure 2 , flow from the inlet 22 of the pressure regulating valve 16 to the outlet of the pressure regulating valve 16 is prevented. In the open position of the valve member 24, flow from the inlet 22 to the outlet 23 is allowed.
  • the pressure regulating valve 16 is constructed so that the fluid pressure in the inlet 22 of the pressure regulating valve 16 pushes the valve member 24 towards the open position.
  • an end surface of the valve member 24 forms a first piston surface 29, on which the pressure in the inlet 22 of the pressure regulating valve 16 is applied.
  • An opposite end of the valve member 24 forms a second piston surface 30, which delimits a fluid chamber 27, which is arranged inside the pressure regulating valve 16.
  • the pressure regulating valve 16 comprises a spring 28, which pushes the valve member 24 towards the closed position.
  • the pressure in the fluid chamber 27 thus creates together with the force of the spring 28 a closing force, and the pressure regulating valve 16 opens when the force created by the fluid pressure acting on the first piston surface 29 exceeds the combined closing force of the spring 28 and the hydraulic pressure acting on the second piston surface 30.
  • the valve member 24 of the pressure regulating valve 16 is thus allowed to move from the closed position towards the open position when the pressure in the fluid chamber 27 is released.
  • the fluid chamber 27 of the pressure regulating valve 16 is in fluid communication with the lubricating oil line 4 via an actuating line 34.
  • the pressure in the fluid chamber 27 is thus substantially the same as in the lubricating oil line 4.
  • the inlet 22 of the pressure regulating valve 16 and the actuating line 34 are connected to the same point of the lubricating oil line 4, and the pressure in the actuating line 34 is thus substantially the same as in the inlet 22.
  • the area of the second piston surface 30 is greater than the area of the first piston surface 29 of the valve member 24.
  • the actuating line 34 is provided with a first control valve 19, which is arranged downstream from a connecting line 35 connecting the fluid chamber 27 of the pressure regulating valve 16 to the actuating line 34.
  • the first control valve 19 can be used for controlling the opening of the pressure regulating valve 16.
  • the downstream side of the first control valve 19 is connected to the pressure release line 15.
  • the first control valve 19 is a pressure-controlled valve, which is kept in a closed position by spring force.
  • the first control valve 19 is in fluid communication with the lubricating oil line 4 via the control line 17.
  • the control line 17 transmits control pressure to the first control valve 19.
  • the control line 17 is connected to the lubricating oil line 4 close to the main bearings 2 of the engine.
  • the pressure regulating valve 16 is thus controlled on the basis of the lubricating oil pressure in the main bearings 2.
  • the first control valve 19 is configured to open when the pressure in the control line 17 exceeds a first predetermined limit value.
  • the opening pressure of the first control valve 19 is adjustable.
  • the first control valve 19 is adjusted to open at a pressure that equals the maximum lubricating oil pressure needed at the main bearings 2 of the engine.
  • the pressure can be, for instance, 5 bar.
  • the first control valve 19 is opened. Fluid flow from the fluid chamber 27 into the pressure release line 15 is thus allowed.
  • the closing force applied to the valve member 24 of the pressure regulating valve 24 by the fluid pressure in the fluid chamber 27 is reduced, and the hydraulic force acting on the first piston surface 29 of the valve member 24 can push the valve member 24 towards the open position, allowing thus flow from the lubricating oil line 4 into the pressure release line 15.
  • Flow from the lubricating oil line 4 into the fluid chamber 27 via the actuating line 34 is allowed.
  • the actuating line 34 is provided with a first throttle 31, which is configured to cause a pressure drop when the lubricating oil flows through it. The pressure drop allows the pressure in the fluid chamber 27 to decrease and the valve member 24 to move to the open position.
  • a second throttle 32 is arranged in the connecting line 35. This throttle 35 limits the moving speed of the valve member 24.
  • the actuating line 34 is provided with a branch 36, which is connected to the control line 17.
  • the branch 36 is provided with a check valve 33, which allows flow from the actuating line 34 to the control line 17, when a predetermined pressure difference over the check valve 33 is exceeded.
  • the predetermined pressure difference can be, for instance, 3 bar.
  • the control line 17 is provided with a third throttle 37, which ensures that the pressure in the branch 36 does not disappear via the control line 17 when the check valve 33 opens, but the pressure in the lubricating oil line 4 at the point where the pressure regulating valve 16 is connected to it becomes the control pressure of the first control valve 19.
  • the third throttle 37 also prevents pulsations in the control line 17.
  • the first control valve 19 maintains the pressure at the pressure monitoring point of the lubricating oil line 4 around the first predetermined limit value.
  • the first predetermined limit value is chosen so that the lubrication of the main bearings 2 of the engine is sufficient even in harsh operating conditions of the engine. However, this lubricating oil pressure is needed only occasionally, and by maintaining the lubricating oil pressure at that level, energy is wasted. Therefore, the pressure regulating arrangement according to the invention comprises even a second control valve 20. Also the second control valve 20 is a pressure-controlled valve.
  • the second control valve 20 is configured to open when a control pressure at the second control valve 20 exceeds a second predetermined limit value, which is lower than the first limit value. Also the opening pressure of the second control valve 20 is adjustable.
  • the second predetermined limit value can be, for instance, 4 bar.
  • a second control line 38 connects the second control valve 20 to the control line 17.
  • the second control line 38 is provided with an actively controllable valve 25, which can be used for opening and closing fluid communication between the control line 17 and the second control valve 20. Control pressure is thus transmitted to the second control valve 20 only when the valve 25 is open.
  • the valve 25 is a solenoid valve.
  • the valve 25 is a normally closed valve. When the solenoid of the valve 25 is not energized, the valve 25 thus remains in the closed position preventing flow from the control line 17 to the second control valve 20.
  • a second connecting line 39 connects the second control valve 20 to the actuating line 34. When the valve 25 is switched to the open position, flow from the control line 17 to the second control valve 20 is allowed.
  • the downstream side of the second control valve 20 is connected to the pressure release line 15.
  • the second control valve 20 opens allowing flow from the fluid chamber 27 of the pressure regulating valve 16 into the pressure release line 15.
  • the pressure regulating valve 16 thus opens and maintains the pressure in the lubricating oil line 4 at the pressure monitoring point around the second predetermined limit value.
  • the first control valve 19 receives the same control pressure as the second control valve 20, but since the first predetermined limit value is greater than the second predetermined limit value, the first control valve 19 does not open.
  • the second control line 38 is provided with a filter 40, which protects the solenoid valve 25.
  • the valve 25 is a 3/2 valve.
  • valve 25 When the valve 25 is in the closed position, the volume between the valve 25 and the second control valve 20 is connected to a tank. This ensures that possible leakage through the valve 25 does not increase pressure in the second control line 38 downstream from the valve 25 and the second control valve 20 remains closed.
  • the pressure regulating arrangement comprises even a third control valve 21.
  • the third control valve 21 is a pressure-controlled valve.
  • the third control valve 21 is configured to open when a control pressure at the third control valve 21 exceeds a third predetermined limit value, which is lower than the second limit value.
  • the opening pressure of the third control valve 21 is adjustable.
  • the third predetermined limit value can be, for instance, 3 bar.
  • a third control line 41 connects the third control valve 21 to the control line 17.
  • the third control valve 21 is connected to the second control line 38 upstream from the solenoid valve 25, but the third control line 41 could also be connected directly to the control line 17.
  • the third control line 41 is provided with an actively controllable valve 26, which can be used for opening and closing fluid communication between the control line 17 and the third control valve 21. Control pressure is thus transmitted from the control line 17 to the third control valve 21 only when the valve 26 is open.
  • the valve 26 is a solenoid valve.
  • the valve 26 is a normally closed valve. When the solenoid of the valve 26 is not energized, the valve 26 thus remains in the closed position preventing flow from the control line 17 to the third control valve 21.
  • a third connecting line 42 connects the third control valve 21 to the actuating line 34.
  • the valve 26 When the valve 26 is switched to the open position, flow from the control line 17 to the third control valve 21 is allowed.
  • the downstream side of the third control valve 21 is connected to the pressure release line 15.
  • the third control valve 21 opens allowing flow from the fluid chamber 27 of the pressure regulating valve 16 into the pressure release line 15.
  • the pressure regulating valve 16 thus opens and maintains the pressure in the lubricating oil line 4 at the pressure monitoring point around the third predetermined limit value.
  • the first control valve 19 and the second control valve 20 receive the same control pressure as the third control valve 21, but since the first predetermined limit value and the second predetermined limit value are greater than the third predetermined limit value, the first control valve 19 and the second control valve 20 do not open.
  • the third control line 41 is connected to the second control line 38 downstream from the filter 40, which therefore protects also the solenoid valve 26 in the third control line 41.
  • the valve 26 in the third control line 41 is a 3/2 valve.
  • control valves 19, 20, 21 and the solenoid valves 25, 26 can be integrated in a valve module 18.
  • the pressure needed in the lubricating system varies according to the operating conditions of the engine.
  • the pressure in a lubricating system comprising a pressure regulating arrangement according to the invention can be regulated so that the use of excessive lubricating oil pressures can be avoided.
  • the required lubricating oil pressure can depend on several different factors, such as the engine load, engine speed and the use of variable inlet valve closing timing (VIC). For instance, a higher lubricating oil pressure may be needed when a VIC function is in use or when the engine load is high and jet cooling of the pistons of the engine requires greater cooling oil flow rate.
  • VIP variable inlet valve closing timing
  • a parameter or a set of parameters describing the operating conditions of the engine can be determined. The parameters can include, for instance, engine load, engine speed and the status of the VIC function (on/off). Based on the parameters, different engine operating conditions are determined. For each operating conditions, a corresponding required lubricating oil pressure is determined. When the engine is operated, the operating conditions of the engine are monitored.
  • control pressure from the lubricating oil line 4 is transmitted to that control valve 19, 20, 21, which sets the lubricating oil pressure at the pressure monitoring point to the lowest possible level corresponding to at least the required lubricating oil pressure. Transmission of control pressure to the control valves 19, 20, 21 having a lower opening pressure than the required lubricating oil pressure is prevented.
  • the status of a VIC function can be monitored.
  • the VIC function When the VIC function is switched on, it can be considered as an indication of operating conditions requiring lubricating oil pressure of 5 bar.
  • the first control valve 19 is adjusted to open when the control pressure is 5bar
  • the second control valve 20 is adjusted to open when the control pressure is 4 bar
  • the third control valve 21 is adjusted to open when the control pressure is 3 bar. Only the first control valve 19 can thus maintain the pressure at the pressure monitoring point at the required level. Transmission of the control pressure to the second control valve 20 and to the third control valve 21 is thus prevented, and the first control valve 19 regulates the pressure.
  • the load of the engine can be monitored.
  • a certain load is considered as an indication of operating conditions, where lubricating oil pressure of 4 bar is sufficient.
  • the valve 25 in the second control line 38 can be opened for transmitting control pressure from the control line 17 to the second control valve 20.
  • the valve 26 in the third control line 41 is kept closed.
  • the second control valve 20 thus regulates the pressure maintaining the pressure around 4 bar at the pressure monitoring point.
  • control pressure can be transmitted to the third control valve 21 by opening the valve 26 in the third control line 41.
  • the valve 25 in the second control line 38 can be either open or closed.
  • the third control valve 21 now regulates the pressure maintaining it around 3 bar at the pressure monitoring point.
  • the opening pressures of the control valves do not need to be adjustable.
  • the pressure regulating arrangement could comprise four or more control valves or only two control valves.
  • pneumatically controlled valves could be used.
  • the pressure regulating arrangement could also be provided instead of two or more solenoid valves with a single valve for selecting which of the control valves are connected to the control line.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Claims (7)

  1. Agencement de régulation de pression pour un système de lubrification d'un moteur à piston, lequel agencement de régulation de pression comprend
    - une conduite d'actionnement (34),
    - une soupape de régulation de pression (16) ayant une chambre de fluide (27) et une entrée (22) qui peuvent être agencées en communication fluidique avec une conduite d'huile de lubrification (4) où la pression doit être régulée, une sortie (23) qui peut être agencée en communication fluidique avec une conduite de libération de pression (15), et un élément de soupape (24) qui est mobile entre une position fermée empêchant l'écoulement entre l'entrée (22) et la sortie (23) et une position ouverte permettant l'écoulement entre l'entrée (22) et la sortie (23),
    - une conduite de raccordement (35) reliant la chambre de fluide (27) de la soupape de régulation de pression (16) à la conduite d'actionnement (34) pourvue d'une première soupape de commande (19) à pression commandée agencée en aval de la conduite de raccordement (35), qui est configurée pour passer d'une position fermée à une position ouverte lorsqu'une pression de commande au niveau de la première soupape de commande (19) dépasse une première valeur limite prédéterminée, dans lequel l'ouverture de la première soupape de commande (19) est configurée pour permettre le mouvement de l'élément de soupape (24) de la soupape de régulation de pression (16) de la position fermée à la position ouverte,
    - une deuxième soupape de commande (20) à pression commandée, qui est configurée pour passer d'une position fermée à une position ouverte lorsqu'une pression de commande au niveau de la deuxième soupape de commande (20) dépasse une deuxième valeur limite prédéterminée, qui est inférieure à la première valeur limite prédéterminée, dans lequel l'ouverture de la deuxième soupape de commande (20) est configurée pour permettre le mouvement de l'élément de soupape (24) de la soupape de régulation de pression (16) de la position fermée à la position ouverte,
    - une conduite de commande (17) qui peut être agencée en communication fluidique avec la conduite d'huile de lubrification (4) pour transmettre la pression de commande à la première soupape de commande (19) et à la deuxième soupape de commande (20),
    - une deuxième conduite de commande (38) reliant la deuxième soupape de commande (20) à la conduite de commande (17), et
    - une deuxième conduite de raccordement (39) reliant la deuxième soupape de commande (20) à la conduite d'actionnement (34),
    caractérisé en ce que l'agencement de régulation de pression comprend en outre une soupape (25) normalement fermée à commande active pour ouvrir et fermer la communication fluidique entre la conduite de commande (17) et la deuxième soupape de commande (20), dans lequel la pression de commande est transmise à la deuxième soupape de commande (20) uniquement lorsque la soupape (25) normalement fermée est ouverte.
  2. Agencement selon la revendication 1, dans lequel la soupape (25) pour ouvrir et fermer la communication fluidique entre la conduite de commande (17) et la deuxième soupape de commande (20) est une électrovanne.
  3. Agencement selon la revendication 1 ou 2, dans lequel l'agencement de régulation de pression comprend une troisième soupape de commande (21) à pression commandée, qui est configurée pour s'ouvrir lorsqu'une pression de commande au niveau de la troisième soupape de commande (21) dépasse une troisième valeur limite prédéterminée, qui est inférieure à la deuxième valeur limite prédéterminée, dans lequel l'ouverture de la troisième soupape de commande (21) est configurée pour permettre le mouvement de l'élément de soupape (24) de la soupape de régulation de pression (16) de la position fermée à la position ouverte, et l'agencement de régulation de pression comprend en outre une soupape (26) à commande active pour ouvrir et fermer la communication fluidique entre la conduite de commande (17) et la troisième soupape de commande (21).
  4. Agencement selon la revendication 3, dans lequel la soupape (26) pour ouvrir et fermer la communication fluidique entre la conduite de commande (17) et la troisième soupape de commande (21) est une électrovanne.
  5. Système de lubrification d'un moteur à piston, dans lequel le système de lubrification comprend un agencement de régulation de pression selon l'une quelconque des revendications précédentes.
  6. Procédé de régulation de pression dans un système de lubrification d'un moteur à piston, lequel système de lubrification comprend
    - une soupape de régulation de pression (16) pour libérer la pression d'une conduite d'huile de lubrification (4) dans une conduite de libération de pression (15),
    - au moins deux soupapes de commande (19, 20, 21) à pression commandée, chacune des soupapes de commande (19, 20, 21) étant configurée pour s'ouvrir lorsqu'une pression de commande au niveau de la soupape (19, 20, 21) dépasse une valeur limite individuelle prédéterminée, dans lequel l'ouverture de l'une quelconque des soupapes de commande (19, 20, 21) est configurée pour ouvrir la soupape de régulation de pression (16),
    le procédé comprenant les étapes de
    - détermination d'un paramètre ou d'un ensemble de paramètres décrivant les conditions de fonctionnement du moteur,
    - sur la base des paramètres, détermination d'au moins deux conditions de fonctionnement différentes nécessitant des pressions d'huile de lubrification différentes,
    - surveillance des conditions de fonctionnement du moteur, et
    dans chaque condition de fonctionnement détectée du moteur, la transmission de pression de commande de la conduite d'huile de lubrification (4) à au moins ladite soupape de commande (19, 20, 21), qui a la valeur limite prédéterminée la plus basse correspondant au moins à la pression d'huile de lubrification requise,
    dans lequel la transmission de pression de commande à ces soupapes de commande (19, 20, 21) dont les valeurs limites prédéterminées sont inférieures à la pression d'huile de lubrification requise est empêchée au moyen de soupapes (25, 26) normalement fermées à commande active, qui transmettent la pression de commande aux soupapes de commande (19, 20, 21) respectives uniquement lorsqu'elles sont ouvertes.
  7. Procédé selon la revendication 6, dans lequel le système de lubrification comprend au moins trois soupapes de commande (19, 20, 21) à pression commandée.
EP15802178.2A 2015-11-19 2015-11-19 Agencement et procédé de régulation de pression Active EP3377737B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FI2015/050803 WO2017085354A1 (fr) 2015-11-19 2015-11-19 Agencement et procédé de régulation de pression

Publications (2)

Publication Number Publication Date
EP3377737A1 EP3377737A1 (fr) 2018-09-26
EP3377737B1 true EP3377737B1 (fr) 2021-08-04

Family

ID=54754684

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15802178.2A Active EP3377737B1 (fr) 2015-11-19 2015-11-19 Agencement et procédé de régulation de pression

Country Status (4)

Country Link
EP (1) EP3377737B1 (fr)
KR (1) KR102084873B1 (fr)
CN (1) CN108291462B (fr)
WO (1) WO2017085354A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6851919B2 (ja) * 2017-06-29 2021-03-31 株式会社クボタ エンジンのオイル供給装置
DE102017122115A1 (de) * 2017-09-25 2019-03-28 Man Diesel & Turbo Se Schmierölsystem einer Schiffsdieselbrennkraftmaschine und Verfahren zum Betreiben desselben

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007056683A1 (de) * 2007-11-24 2009-05-28 Schaeffler Kg Vorrichtung zur variablen Einstellung der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine
US8327750B2 (en) 2008-07-22 2012-12-11 Eaton Corporation Valvetrain oil control system and oil control valve
US9388804B2 (en) * 2011-01-28 2016-07-12 Magna Powertrain Inc. Oil pump with selectable outlet pressure
KR20130109323A (ko) * 2012-03-27 2013-10-08 현대자동차주식회사 차량용 오일펌프 제어시스템 및 이의 운용방법
JP6192480B2 (ja) * 2013-10-18 2017-09-06 日立オートモティブシステムズ株式会社 内燃機関のオイルポンプ及びオイルポンプのリリーフ圧制御装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
KR102084873B1 (ko) 2020-03-04
EP3377737A1 (fr) 2018-09-26
CN108291462B (zh) 2020-05-15
WO2017085354A1 (fr) 2017-05-26
CN108291462A (zh) 2018-07-17
KR20180084096A (ko) 2018-07-24

Similar Documents

Publication Publication Date Title
US8202061B2 (en) Control system and method for pump output pressure control
US7018178B2 (en) Variable displacement pump and control therefore for supplying lubricant to an engine
US7726948B2 (en) Hydraulic pump with variable flow and variable pressure and electric control
JP5873109B2 (ja) 選択可能な出口圧力を有する油ポンプ
US10662977B2 (en) Vehicle hydraulic system
KR101209748B1 (ko) 오일펌프의 출력 압력 제어시스템
EP3377738B1 (fr) Agencement et procédé de régulation de pression
CN107061970B (zh) 具有两件式安全阀的机动车润滑泵系统
EP3377737B1 (fr) Agencement et procédé de régulation de pression
JPH01275905A (ja) プライオリティ弁
KR101393952B1 (ko) 자동변속기의 유압 제어 회로
WO2016055082A1 (fr) Ensemble pompe à huile pour système de lubrification de véhicule
US11906986B2 (en) Counter pressure valve arrangement
EP1873363A2 (fr) Pompe à cylindrée variable et son contrôle
WO2004046534A1 (fr) Systeme de pompe regule par electrovanne
JP2019219008A (ja) 油圧回路

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20180619

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: WAERTSILAE FINLAND OY

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20200327

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20210311

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1417191

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210815

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602015071974

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20210804

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211104

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210804

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211206

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211104

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210804

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210804

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210804

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210804

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210804

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210804

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210804

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211105

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210804

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210804

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602015071974

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210804

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210804

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210804

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210804

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210804

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210804

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210804

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

26N No opposition filed

Effective date: 20220506

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20211119

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211119

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210804

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211130

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20211130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210804

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211119

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211119

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211130

REG Reference to a national code

Ref country code: AT

Ref legal event code: UEP

Ref document number: 1417191

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210804

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20151119

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210804

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220630

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220630

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20231121

Year of fee payment: 9

Ref country code: AT

Payment date: 20231121

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210804

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210804