CN110312856A - Marine diesel engine, engine control system and method - Google Patents
Marine diesel engine, engine control system and method Download PDFInfo
- Publication number
- CN110312856A CN110312856A CN201880009202.9A CN201880009202A CN110312856A CN 110312856 A CN110312856 A CN 110312856A CN 201880009202 A CN201880009202 A CN 201880009202A CN 110312856 A CN110312856 A CN 110312856A
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- Prior art keywords
- exhaust gas
- engine
- gas temperature
- rotary speed
- temperature riser
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
- B01D53/9413—Processes characterised by a specific catalyst
- B01D53/9418—Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1446—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being exhaust temperatures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D45/00—Electrical control not provided for in groups F02D41/00 - F02D43/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
- F01N2590/02—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for marine vessels or naval applications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
- F01N2900/1404—Exhaust gas temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/101—Engine speed
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Biomedical Technology (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
In marine diesel engine, have: engine main body (11)；SCR denitration device (13), the SCR denitration device are set to the exhaust lay out (G4) for the exhaust gas being discharged from engine main body (11)；Exhaust gas temperature riser (14), the exhaust gas which flows into heat up；And control device (15), the control device controls the work of exhaust gas temperature riser (14), and so that exhaust gas temperature riser (14) is stopped working when engine speed is in preset danger rotary speed area (A).
Description
Technical field
Having the present invention relates to one kind selects shape selective catalysis reduction (SCR:Selective Catalytic Reduction) de-
The marine diesel engine of nitre device.
Background technique
As the host for being equipped on ship marine diesel engine due in the offgas include nitrogen oxides (NOx) because
This has the device for reducing the NOx.As the device for reducing the NOx, there are SCR denitration devices.The SCR denitration device will have
The reducing agent of the effect of nitrogen oxides reduction is supplied to exhaust pipe, and promotes the anti-of nitrogen oxides in exhaust gas and reducing agent
It answers, to remove, reduce nitrogen oxides in exhaust gas.But in order to go the SCR denitration device expeditiously by catalyst
Nitrogen oxides in removing exhaust gas needs to maintain exhaust gas temperature defined reaction temperature or more.
Existing technical literature
Patent document
Patent document 1: No. 5781290 bulletins of Japanese Patent Publication No.
Patent document 1: Japanese Utility Model registers No. 317346 bulletin
Problems to be solved by the invention
In above-mentioned patent document 1, the temperature of exhaust gas is increased by using burner, or to the exhaust end from engine
The exhaust blast of high temperature after mouth discharge includes the aqueous solution of reducing agent, and it is warm that the temperature of exhaust gas is maintained defined reaction
Degree or more.Accordingly, it is possible to will lead to increased costs.
In addition, marine diesel engine revolving speed when starting running increases.At this point, engine is due to being rotary machine meeting
Resonance etc. is generated, therefore there are the forbidden dangerous rotary speed area (Barred of the operating for a long time in defined rotary speed area
Range,Critical Speed).This point is documented in above patent document 2.Therefore, when engine speed reaches dangerous turn
When fast region, it is desirable that make ship promptly rotary speed area out of danger by making revolving speed increase in a short time.
Summary of the invention
The present invention makes in view of the above problems, a kind of can be achieved at the same time the de- of exhaust gas it is intended that providing
Marine diesel engine, engine control system and the method for nitre processing and the stable driving of engine.
Means for solving the problems
Marine diesel engine of the invention for reaching above-mentioned purpose is characterized in that having: engine main body；
Denitrification apparatus, the denitrification apparatus are set to the exhaust lay out for the exhaust gas being discharged from the engine main body；Exhaust gas temperature rises dress
It sets, the exhaust gas that the opposite denitrification apparatus of the exhaust gas temperature riser flows into heats up；And control device, control dress
It sets and the work of the exhaust gas temperature riser is controlled, and be in preset dangerous revolving speed in engine speed
The exhaust gas temperature riser is set to stop working when region.
Therefore, when control device makes exhaust gas temperature riser work, the temperature of the exhaust gas from engine rises, and takes off
The denitration process of nitre device implementation exhaust gas.Also, when engine speed enters dangerous rotary speed area, control device makes exhaust gas temperature
Degree riser stops working.Here, even if exhaust gas temperature riser is made to stop working, due to the thermal capacity of denitrification apparatus
Greatly, therefore the temperature of exhaust gas will not drastically decline, and denitrification apparatus can properly implement the denitration process of exhaust gas.Separately
Outside, when making exhaust gas temperature riser stop working, since the combustion state of engine main body is stablized, control device energy
It is enough properly to increase engine speed, and promptly rotary speed area out of danger.As a result, can be achieved at the same time exhaust gas
The stable driving of denitration process and engine.
It in marine diesel engine of the invention, is characterized in that, when input rises engine speed and is more than institute
When stating the instruction value of dangerous rotary speed area, the control device makes the exhaust gas temperature riser when described instruction value inputs
It stops working.
Therefore, because inputting instruction value and exhaust gas temperature riser being made to stop working, therefore can turn in engine
Speed makes exhaust gas temperature riser stop working before reaching dangerous rotary speed area, to make at the combustion state of engine main body
In stable state, it can properly increase engine speed and promptly rotary speed area out of danger.
It in marine diesel engine of the invention, is characterized in that, the control device is in current engine speed
The exhaust gas temperature riser is set to stop working when reaching the dangerous rotary speed area.
Therefore, because so that exhaust gas temperature riser is stopped working when engine speed reaches dangerous rotary speed area, because
This can reliably make exhaust gas temperature riser stop working when the revolving speed of engine reaches dangerous rotary speed area, to make
The combustion state of engine main body is in stable state, can properly increase engine speed and promptly revolving speed out of danger
Region.
It in marine diesel engine of the invention, is characterized in that, the control device setting dangerous revolving speed area
The surplus lower limit value in domain, the surplus lower limit value of the danger rotary speed area are to the lower limit value of the dangerous rotary speed area plus preparatory
Obtained from the margin value of setting, and it is lower than the lower limit value of the dangerous rotary speed area, and the control device is current
Engine speed makes the exhaust gas temperature riser stop working when reaching the surplus lower limit value.
Therefore, because making exhaust gas temperature riser stop working when engine speed reaches surplus lower limit value, therefore
Exhaust gas temperature riser can be made to stop working before the revolving speed of engine reaches dangerous rotary speed area, to make engine
The combustion state of main body is in stable state, can properly increase engine speed and promptly rotary speed area out of danger.
It in marine diesel engine of the invention, is characterized in that, the control device is in current engine speed
The exhaust gas temperature riser is set to start to work when having been detached from the dangerous rotary speed area.
Therefore, because exhaust gas temperature riser is made to start to work when engine speed rotary speed area out of danger, because
Between the halted state of exhaust gas temperature riser can be set as most short-term by this, denitrification apparatus can properly implement the de- of exhaust gas
Nitre processing.
It in marine diesel engine of the invention, is characterized in that, is detached from the danger from current engine speed
Dangerous rotary speed area rises by after the preset stipulated time, the control device starts the exhaust gas temperature riser
Work.
Therefore, because rising exhaust gas temperature after the stipulated time from engine speed rotary speed area out of danger
Device is started to work, therefore becomes making exhaust gas temperature riser work after engine speed completely disengages dangerous rotary speed area
Make, so as to ensure the safety of engine main body, and can properly implement denitrification apparatus to the denitration process of exhaust gas.
In addition, being characterized in that marine diesel engine has in engine control system of the invention: mobilizing owner
Body；Denitrification apparatus, the denitrification apparatus are set to the exhaust lay out for the exhaust gas being discharged from the engine main body；And exhaust gas temperature
Riser, the exhaust gas that the opposite denitrification apparatus of the exhaust gas temperature riser flows into heats up, in the ship bavin
In oil turbine, the engine control system controls the work of the exhaust gas temperature riser, and is starting
Machine revolving speed makes the exhaust gas temperature riser stop working when being in preset dangerous rotary speed area.
Therefore, when making exhaust gas temperature riser work, the temperature of the exhaust gas from engine rises, and denitrification apparatus is real
Apply the denitration process of exhaust gas.Also, when engine speed enters dangerous rotary speed area, exhaust gas temperature riser is made to stop work
Make.Here, even if exhaust gas temperature riser is made to stop working, since the thermal capacity of denitrification apparatus is big, the temperature of exhaust gas
It will not drastically decline, and denitrification apparatus can properly implement the denitration process of exhaust gas.In addition, when rising exhaust gas temperature
When device stops working, since the combustion state of engine main body is stablized, it can properly increase engine speed, and
Promptly rotary speed area out of danger.As a result, can be achieved at the same time the denitration process of exhaust gas and the stable drive of engine
It is dynamic.
In addition, engine control of the invention is characterized in that having following process: in ship at least in atmosphere
When polluter discharges confined waters, implement the processing for increase the temperature of the exhaust gas from engine main body, and implements useless
The process of the denitration process of gas；And when engine speed enters preset dangerous rotary speed area, stopping makes exhaust gas
The process for the processing that temperature rises.
Therefore, when engine speed enters dangerous rotary speed area, when making exhaust gas temperature riser stop working,
Since the combustion state of engine is stablized, it can suitably increase engine speed, and can be promptly out of danger
Rotary speed area.As a result, can be achieved at the same time the denitration process of exhaust gas and the stable driving of engine.
The effect of invention
Marine diesel engine, engine control system and method according to the present invention, can be achieved at the same time exhaust gas
The stable driving of denitration process and engine.
Detailed description of the invention
Fig. 1 is the schematic structural diagram for indicating the marine diesel engine of first embodiment.
Fig. 2 is the time diagram for indicating the work of SCR denitration device.
Fig. 3 is the time diagram of the work of the SCR denitration device in the marine diesel engine for indicate second embodiment.
Fig. 4 is the time diagram of the work of the SCR denitration device in the marine diesel engine for indicate third embodiment.
Fig. 5 is the time diagram of the work of the SCR denitration device in the marine diesel engine for indicate the 4th embodiment.
Specific embodiment
Hereinafter, referring to attached drawing to the preferred of marine diesel engine of the invention, engine control system and method
Embodiment is described in detail.In addition, the present invention is limited not by the embodiment, in addition, there are multiple realities
It also include the structure for combining each embodiment and constituting in the case where applying mode.
[first embodiment]
Fig. 1 is the schematic structural diagram for indicating the marine diesel engine of first embodiment.
In the first embodiment, as shown in Figure 1, marine diesel engine 10 has engine main body 11, booster
12, SCR denitration device 13, exhaust gas temperature riser 14 and control device 15.
Engine main body 11 is to keep propulsion (main with the engine of the propulsion of propeller rotation driving via propeller shaft
Engine).The engine main body 11 is the diesel engine of uniflow type, is two-stroke diesel engine, will be in cylinder
Suction air-flow is set as one direction from below upwards, to eliminate residual exhaust gases.Engine main body 11 has: above and below piston
Mobile multiple cylinders (combustion chamber) 21；The scavenging air trunk 22 being connected to each cylinder 21；And the exhaust being connected to each cylinder 21
Manifold (exhaust static tube) 23.Also, it is provided with scavenging port 24 between each cylinder 21 and scavenging air trunk 22, in each cylinder 21
Exhaust port 25 is provided between exhaust manifold 23.Also, engine main body 11 is linked with gas supply route in scavenging air trunk 22
G1 is linked with exhaust lay out G2 in exhaust manifold 23.
Marine diesel engine 10 has booster 12.Booster 12 is configured to compressor 31 and turbine 32 passes through rotation
Axis 33 is linked in a manner of rotating integrally.Compressor 31 is connected with suction inlet G3 in suction side, is connected with air supply line in discharge side
Road G1.Turbine 32 is connected with exhaust lay out G2 in inflow side, is connected with exhaust lay out G4 in discharge side.Therefore, turbine 32 passes through
The exhaust gas of exhaust lay out G2 is discharged to from exhaust manifold 23 and is rotated, and the rotation of turbine 32 is transmitted by rotary shaft 33, from
And compressor 31 rotates.The compression of compressor 31 is supplied from route G1 is supplied to sweeping from suction inlet G3 air suck and by the air
Gas general pipeline 22.
SCR denitration device 13 is set to exhaust lay out G4.SCR denitration device 13 is supplied by SCR reactor 41 and reducing agent
Device 42 is constituted.SCR denitration device 13 supplies the reducing agent with nitrogen oxides reduction (NOx) to exhaust lay out
G4 promotes to be supplied with the reaction of NOx and reducing agent in the exhaust gas of reducing agent, to remove, reduce NOx in exhaust gas.Therefore,
The upstream side of the flow direction of the exhaust gas of SCR reactor 41 in exhaust lay out G4 is provided with reducer feeding device 42.It should
Reducer feeding device 42 can make the reduction by supplying reducing agent towards the downstream side of the entire flow path in exhaust lay out G4
Agent is spread in the exhaust lay out G4 flowed for exhaust gas.In addition, as also such as being able to use ammonium hydroxide, gaseous ammonia, urea water
Former agent.
The turbine 32 of above-mentioned booster 12 is connected under the exhaust lay out G2 from engine main body 11 in inflow side
Side is swum, is linked with exhaust lay out G4, the i.e. SCR denitration device 13 for the exhaust gas that discharge rotates turbine 32 in discharge side.The exhaust
Route G4 and chimney (not shown) (ventilator) link.
SCR denitration device 13 needs to maintain exhaust gas temperature to efficiently remove the NOx in exhaust gas using catalyst
It is more than defined reaction temperature.A part of the exhaust gas of the turbine 32 of 14 pairs of inflow boosters 12 of exhaust gas temperature riser carries out
Pumping.Exhaust gas temperature riser 14 is made of pumping exhaust gases G5 and pumping exhaust gas valve 51.Take out exhaust gases G5 base end part with
The upstream side of turbine 32 in exhaust lay out G2 connects, the downstream side of top end part and the turbine 32 in exhaust lay out G4 and SCR is de-
The upstream side of nitre device 13 connects.It takes out exhaust gas valve 51 and is set to pumping exhaust gases G5.
Therefore, when open pumping exhaust gas valve 51, the exhausted air quantity for flowing into turbine 32 from exhaust lay out G2 is reduced and secondary speed
Decline.When secondary speed decline, it is integrally linked to the revolving speed decline of the compressor 31 of turbine 32 via rotary shaft 33, increases
Pressure pressure decline, to supply from gas supply route G1 to the air capacity reduction of each cylinder 21 of engine main body 11.Then, start
The air-fuel ratio of owner's body 11 becomes smaller and ignition temperature rises, so that the temperature of exhaust gas also rises.
In addition, exhaust gas temperature riser 14 is not limited to be made of pumping exhaust gases G5 and pumping exhaust gas valve 51.For example,
Exhaust gas temperature riser 14A carries out a part of the air supplied from the compressor 31 of booster 12 to engine main body 11
Pumping.Exhaust gas temperature riser 14A is made of pumping route G6 and extraction valve 52.It is evacuated the base end part and air supply line of route G6
Road G1 connection, top end part is to atmosphere opening.Extraction valve 52 is set to pumping route G6.Therefore, when open extraction valve 52, from pressure
Contracting machine 31 is supplied by supplying route G1 to the air capacity reduction of each cylinder 21 of engine main body 11.Then, mobilize owner
The air-fuel ratio of body 11 becomes smaller and ignition temperature rises, so that the temperature of exhaust gas also rises.
In addition, for example can also using to opening and closing opportunity of the exhaust valve (illustration omitted) for being set to engine main body 1 into
Row control control device, to the amount of injection for the fuel injection valve (illustration omitted) for being set to engine main body 11 carry out control or
Control device controlled injection opportunity etc. is as other exhaust gas temperature risers.
Gas supply route G1 is provided with aerial cooler (cooler) 61.Aerial cooler 61 is by making to be compressed by compressor 31
And the air for becoming high temperature carries out heat exchange with cooling water to cool down to air.
Ship by manipulation handle 71 allow hand over move forward and backward, stop, route speed.Since advanced side,
As sail mode, full speed aheads and (Navigation Full Ahead: advance under navigation (common) speed complete there are navigation
Speed), as sail mode in bay, there is full speed ahead (Full Ahead: the full speed revolving speed to advance under harbor speed), Half Speed
Advance (Half Ahead: the Half Speed revolving speed to advance under harbor speed), advance (Slow Ahead: advance under harbor speed at a slow speed
Dead slow speed revolving speed), dead slow ahead (Dead Slow Ahead: the most dead slow speed revolving speed to advance under harbor speed), host stop.And
And stopped to from host and retreat side, there are dead slow astern, (Dead Slow Astern: the most dead slow speed retreated under harbor speed turns
Speed), slow astern (Slow Astern: the dead slow speed revolving speed retreated under harbor speed), half astern (Half Astern: in port
The Half Speed revolving speed retreated under speed), full astern (Full Astern: retreating full speed revolving speed).Occupant is by by control crank 71
Each position is switched to, the advance, retrogressing, stopping, route speed of ship are allowed hand over.
Control device 15 is connect with the control crank 71, and right based on the signal (it is required that load) from control crank 71
Engine main body 11 is controlled.For example, control device 15 by based on the signal from control crank 71 to engine main body
Fuel input amount, fuel injection opportunity, the opening and closing opportunity of exhaust valve in 11 etc. are adjusted, and engine speed is adjusted
For egulation rotating speed, the route speed of ship can be adjusted.
In addition, stringenter than general sea area for NOx, SOx and PM in exhaust gas, setting is big in ship's navigation
Gas polluter discharges confined waters (NOx-ECA).If the navigation sea area of current ship is being somebody's turn to do for the discharge rate of limitation NOx
If NOx-ECA, then control device 15 makes SCR denitration device 13 and exhaust gas temperature riser 14 (14A) work.In the feelings
Under condition, can be occupant by Operation switch (illustration omitted) makes SCR denitration device 13 and exhaust gas to the input of control device 15
The signal that temperature riser 14 works, being also possible to control device 15 based on current underway position automatically makes SCR denitration
Device 13 and exhaust gas temperature riser 14 work.In addition, for SCR denitration device 13 and exhaust gas temperature riser 14
Work stop be also it is identical.
That is, if the navigation sea area of current ship be NOx-ECA (NOx limit value sea area) outside, control device 15 makes
SCR denitration device 13 and exhaust gas temperature riser 14 stop working.That is, make reducer feeding device 42 stop to
Exhaust lay out G4 supplies reducing agent, and closes and take out exhaust gas valve 51 and block and take out exhaust gases G5.Alternatively, close extraction valve 52 and
Block pumping route G6.On the other hand, if if the navigation sea area of current ship is NOx-ECA (confined waters NOx) interior,
Control device 15 makes SCR denitration device 13 and exhaust gas temperature riser 14 work.That is, making reducer feeding device
42 start to supply reducing agent to exhaust lay out G4, and open and take out exhaust gas valve 51 and keep pumping exhaust gases G5 negotiable.Alternatively, opening
It puts extraction valve 52 and keeps pumping route G6 negotiable.
Like this, when the navigation sea area of current ship is in NOx-ECA, although by making SCR denitration device 13
And the work of exhaust gas temperature riser 14 is to remove, reduce NOx in exhaust gas, but at this point, due in exhaust gas temperature
Rise a little deterioration of combustion state of therefore engine main body 11.On the other hand, due to can be in engine main body when revolving speed increases
11 generate resonance etc., therefore there are the operating for a long time in defined rotary speed area is forbidden for marine diesel engine 10
Dangerous rotary speed area.In the present embodiment, it is in NOx-ECA in ship, and SCR denitration device 13 and exhaust gas temperature
When riser 14,14A work, when engine speed reaches dangerous rotary speed area, control device 15 rises exhaust gas temperature
Device 14,14A stop working.
Specifically, when the operation by control crank 71 rises engine speed simultaneously from the control crank 71 input
More than dangerous rotary speed area instruction value when, control device 15 the instruction value input when make exhaust gas temperature riser 14,14A
It stops working.Also, control device 15 makes in exhaust gas temperature when current engine speed has been detached from dangerous rotary speed area
Rise device 14,14A starts to work.
Therefore, engine main body 11 is provided with the speed probe 72 detected to engine speed.Speed probe
72 engine speed that connect, and will test out with control device 15 are exported to control device 15.
Hereinafter, being illustrated to the work of the marine diesel engine 10 of first embodiment.
As shown in Figure 1, in engine main body 11, when supplying burning gas into cylinder 21 from scavenging air trunk 22,
The burning gas is compressed by piston (illustration omitted), and by the gas injection fuel of the burning to the high temperature, to make this
It gas spontaneous combustion and burns.Then, the burning gases of generation are discharged as exhaust gas from exhaust manifold 23 to exhaust lay out G2.From hair
The exhaust gas that motivation main body 11 is discharged is discharged to exhaust lay out G4 after rotating turbine 32 in booster 12, and from the row
Gas route G4 is discharged to the outside.
In booster 12, when turbine 32 is rotated due to exhaust gas, the rotation of turbine 32 is passed by rotary shaft 33
It is delivered to compressor 31 and compressor 31 rotates.Compressor 31 compresses the air sucked from suction inlet G3, and by the sky
Gas is supplied from gas supply route G1 to scavenging air trunk 22.At this point, the air supplied from gas supply route G1 to scavenging air trunk 22 is by air
Cooler 61 is cooling.
In addition, if if the navigation sea area of current ship is ECA outer, control device 15 make SCR denitration device 13 with
And exhaust gas temperature riser 14 stops working.On the other hand, if if the navigation sea area of current ship is NOx-ECA interior,
Then control device 15 makes SCR denitration device 13 and exhaust gas temperature riser 14 work.Firstly, working as exhaust gas temperature riser
When 14 work, takes out exhaust gas valve 51 and be opened and reduced from the exhausted air quantity that exhaust lay out G2 flows into turbine 32, supplied from gas supply route G1
To the air capacity reduction to engine main body 11, so that the temperature of exhaust gas rises.Alternatively, working as exhaust gas temperature riser 14A work
When making, extraction valve 52 is opened and supplies from gas supply route G1 to the air capacity reduction of engine main body 11, thus the temperature of exhaust gas
Degree also rises.Next, reducer feeding device 42 supplies reducing agent to exhaust lay out G4 when SCR denitration device 13 works.
Then, the SCR reactor 41 of exhaust lay out G4 is by promoting the reducing agent from reducer feeding device 42 and being warming up to regulation
Reaction temperature more than exhaust gas reaction to remove, reduce the NOx in exhaust gas.
Further, it is in ECA in ship, and when SCR denitration device 13 and the work of exhaust gas temperature riser 14,
When engine speed reaches dangerous rotary speed area, control device 15 makes exhaust gas temperature riser 14 stop working.
Here, being illustrated to the control of SCR denitration device 13 and exhaust gas temperature riser 14.Fig. 2 is to indicate SCR
The time diagram of the work of denitrification apparatus.
The engine control of first embodiment has following process: arranging in ship at least in Air Pollutants
When putting confined waters, implement the processing for increase the temperature of the exhaust gas from engine main body 11, and implement the denitration of exhaust gas
The process of processing；And when engine speed enters preset dangerous rotary speed area, stopping rises the temperature of exhaust gas
Processing process.
As shown in Figure 1 and Figure 2, when the navigation sea area of ship is (ON) in ECA (confined waters), SCR denitration device
13 work (ON), and so that exhaust gas temperature riser 14 is worked and open and take out exhaust gas valve 51, to implement at the denitration of exhaust gas
Reason.Then, at time t1, manipulation handle 71, output rises engine speed and is more than the finger of dangerous rotary speed area A
Enable value.That is, output turns engine when current engine speed Ne1 is the lower limit value NeL or less of dangerous rotary speed area A
Speed rises to the instruction value of the engine speed Ne2 of the upper limit value NeU high than dangerous rotary speed area A from engine speed Ne1.
At time t1, when inputting the instruction value, control device 15 make exhaust gas temperature riser 14 stop working and
It closes and takes out exhaust gas valve 51.In addition, control device 15 makes to send out by implementing to increase the controls such as fuel input amount based on the instruction value
Motivation revolving speed rises.Then, at time t2, although engine speed reaches lower limit value NeL and enters dangerous rotary speed area A,
But at this point, the work due to exhaust gas temperature riser 14 stops, the combustion state of engine main body 11 is stablized, and starts
Machine revolving speed promptly rises, at time t3, rotary speed area A out of danger.In addition, being present in dangerous revolving speed in engine speed
During the A of region in T1, although the temperature of exhaust gas rises processing and stops, the temperature of exhaust gas will not decline in advance, and continue
Implement the denitration process of exhaust gas.
Then, at time t3, as the upper limit value NeU of engine speed rotary speed area A out of danger, control device
15 make exhaust gas temperature riser 14 start to work and open and take out exhaust gas valve 51.Then, again by exhaust gas temperature riser 14
The secondary temperature rising processing for starting exhaust gas, and continue to implement the denitration process of exhaust gas.Hereafter, at time t4, engine turns
Speed reaches target engine speed Ne2.Then, at time t5, when the navigation sea area of ship is in ECA (confined waters) outside
(OFF) when, SCR denitration device 13 is made to stop (OFF) work, and exhaust gas temperature riser 14 is made to stop working and close pumping
Exhaust gas valve 51, so that the denitration process of exhaust gas terminates.
Like this, in the marine diesel engine of first embodiment, have: engine main body 11；Be set to from
The SCR denitration device 13 of the exhaust lay out G4 for the exhaust gas that engine main body 11 is discharged；The exhaust gas that opposite SCR denitration device 13 flows into
The exhaust gas temperature riser 14 to heat up；And the work of exhaust gas temperature riser 14 is controlled, and is sending out
Motivation revolving speed is in the control device for making exhaust gas temperature riser 14 stop working when preset danger rotary speed area A
15。
Therefore, when engine speed enters dangerous rotary speed area A, by making exhaust gas temperature riser 14 stop work
Make, since the combustion state of engine main body 11 is stablized, engine speed can be made properly to increase, and is promptly detached from
Dangerous rotary speed area A.At this point, even if exhaust gas temperature riser 14 is made to stop working, due to the thermal capacity of SCR denitration device 13
Greatly, therefore the temperature of exhaust gas will not sharply decline, and SCR denitration device 13 can properly implement the denitration process of exhaust gas.
As a result, can be achieved at the same time the denitration process of exhaust gas and the stable driving of engine.
In the marine diesel engine of first embodiment, when input rises engine speed and is more than dangerous turn
When the instruction value of fast region A, control device 15 makes exhaust gas temperature riser 14 stop working when the instruction value inputs.Cause
This can be reached due to making exhaust gas temperature riser 14 stop working when instruction value inputs in the revolving speed of engine
Exhaust gas temperature riser 14 is set to stop working before dangerous rotary speed area A, to make at the combustion state of engine main body 11
In stable state, it can properly increase engine speed and promptly rotary speed area A out of danger.
In the marine diesel engine of first embodiment, control device 15 has taken off in current engine speed
Exhaust gas temperature riser 14 is set to start to work when from dangerous rotary speed area A.It therefore, can be by exhaust gas temperature riser 14
Between halted state is set as most short-term, SCR denitration device 13 can properly implement the denitration process of exhaust gas.
In addition, in the engine control system of first embodiment, to be in preset danger in engine speed
The mode for making exhaust gas temperature riser 14 stop working when dangerous rotary speed area A is controlled.Therefore, enter in engine speed
When dangerous rotary speed area A, the combustion state of engine main body 11 can be made to be in stable state and promptly revolving speed out of danger
Region A.
In addition, having following process in the engine control of first embodiment: when ship is in ECA,
Implement the process for the denitration process for handling and implementing exhaust gas for increase the temperature of the exhaust gas from engine main body 11；And
When engine speed enters preset dangerous rotary speed area, stop the process for the processing for increase the temperature of exhaust gas.Cause
This, can be achieved at the same time the denitration process of exhaust gas and the stable driving of engine.
[second embodiment]
Fig. 3 is the time diagram of the work of the SCR denitration device in the marine diesel engine for indicate second embodiment.
In addition, the basic structure of the marine diesel engine of present embodiment is the knot roughly the same with above-mentioned first embodiment
Structure is illustrated using Fig. 1, and for the component with effect identical with above-mentioned first embodiment, is marked identical
Appended drawing reference and omit detailed description.
As shown in Figure 1, control device 15 is in current engine in the marine diesel engine of second embodiment
Revolving speed makes exhaust gas temperature riser 14 (14A) stop working when reaching danger rotary speed area A.
As shown in Figure 1 and Figure 3, when the navigation sea area of ship is (ON) in ECA (confined waters), SCR denitration device
13 work (ON) and so that exhaust gas temperature riser 14 is worked and open and take out exhaust gas valve 51, to implement at the denitration of exhaust gas
Reason.Then, at time t11, manipulation handle 71, output rises engine speed and is more than dangerous rotary speed area A
Instruction value.At time t11, when inputting the instruction value, control device 15 increases fuel throwing by implementing based on the instruction value
Enter the controls such as amount rise engine speed.
At time t12, control device 15 makes to give up while engine speed reaches the lower limit value of dangerous rotary speed area A
Temperature degree riser 14 stops working and closes and take out exhaust gas valve 51.For engine main body 11, although engine speed enters
Dangerous rotary speed area A, but at this point, the work due to exhaust gas temperature riser 14 stops, combustion state temperature is started
Machine revolving speed promptly rises, the rotary speed area A out of danger at time t13.In addition, being present in dangerous revolving speed in engine speed
During the A of region in T1, although the temperature of exhaust gas rises processing and stops, the temperature of exhaust gas will not decline in advance, and continue
Implement the denitration process of exhaust gas.
Then, at time t13, as engine speed rotary speed area A out of danger, control device 15 makes exhaust gas temperature
Degree riser 14 starts to work and opens and take out exhaust gas valve 51.Then, exhaust gas is started again at by exhaust gas temperature riser 14
Temperature rising processing, and continue implement exhaust gas denitration process.Hereafter, at time t14, engine speed reaches target
Engine speed.Then, at time t15, when the navigation sea area of ship is in ECA (confined waters) (OFF) outside, make SCR
Denitrification apparatus 13 stops (OFF) work, and so that exhaust gas temperature riser 14 is stopped working and close and take out exhaust gas valve 51, thus
The denitration process of exhaust gas terminates.
Like this, in the marine diesel engine of second embodiment, control device 15 turns in current engine
Speed makes exhaust gas temperature riser 14 stop working when reaching danger rotary speed area A.Therefore, it can be reached in the revolving speed of engine
Exhaust gas temperature riser 14 is reliably set to stop working when dangerous rotary speed area A, to make the burning shape of engine main body 11
State is in stable state, can properly increase engine speed and promptly rotary speed area A out of danger.
[third embodiment]
Fig. 4 is the time diagram of the work of the SCR denitration device in the marine diesel engine for indicate third embodiment.
In addition, the basic structure of the marine diesel engine of present embodiment is the knot roughly the same with above-mentioned first embodiment
Structure is illustrated using Fig. 1, and for the component with effect identical with above-mentioned first embodiment, is marked identical
Appended drawing reference and omit detailed description.
As shown in Figure 1, control device 15 is set to dangerous revolving speed in the marine diesel engine of third embodiment
The lower limit value of region A turns plus danger obtain after preset margin value B, lower than the lower limit value of dangerous rotary speed area A
The surplus lower limit value of fast region A, and when current engine speed reaches surplus lower limit value, make exhaust gas temperature riser
14 (14A) stop working.
As shown in Fig. 1 and Fig. 4, when the navigation sea area of ship is (ON) in ECA (confined waters), SCR denitration device
13 work (ON) and so that exhaust gas temperature riser 14 is worked and open and take out exhaust gas valve 51, to implement at the denitration of exhaust gas
Reason.Then, at time t21, manipulation handle 71, output rises engine speed and is more than dangerous rotary speed area A
Instruction value.At time t21, when inputting the instruction value, control device 15 increases fuel throwing by implementing based on the instruction value
Enter the controls such as amount rise engine speed.
At time t22, when engine speed reaches the surplus lower limit value of dangerous rotary speed area A, control device 15 makes
Exhaust gas temperature riser 14 stops working and closes and take out exhaust gas valve 51.Then, in the time t23 after stipulated time T2
Place, engine speed reach dangerous rotary speed area A.It is preferred that considering that control is delayed etc. to set stipulated time T2 namely surplus
Value B.For engine main body 11, although engine speed enters dangerous rotary speed area A, at this point, due in exhaust gas temperature
The work for rising device 14 stops, therefore combustion state is stablized, and engine speed promptly rises, and is detached from time t24
Dangerous rotary speed area A.In addition, during engine speed is present in dangerous rotary speed area A in T1, although in the temperature of exhaust gas
Processing is risen to stop, but the temperature of exhaust gas will not decline in advance, and continue to implement the denitration process of exhaust gas.
Then, at time t24, as engine speed rotary speed area A out of danger, control device 15 makes exhaust gas temperature
Degree riser 14 starts to work and opens and take out exhaust gas valve 51.Then, exhaust gas is started again at by exhaust gas temperature riser 14
Temperature rising processing, and continue implement exhaust gas denitration process.Hereafter, at time t25, engine speed reaches target
Engine speed.Then, at time t26, when the navigation sea area of ship is in ECA (confined waters) (OFF) outside, make SCR
Denitrification apparatus 13 stops (OFF) work, and so that exhaust gas temperature riser 14 is stopped working and close and take out exhaust gas valve 51, thus
The denitration process of exhaust gas terminates.
Like this, in the marine diesel engine of third embodiment, the surplus lower limit of dangerous rotary speed area A is set
Value, the surplus lower limit value of danger rotary speed area A be obtained after adding margin value B to the lower limit value of dangerous rotary speed area A, and
Lower limit value than dangerous rotary speed area A is low, and control device 15 makes exhaust gas when current engine speed reaches surplus lower limit value
Temperature riser 14 (14A) stops working.Therefore, can the revolving speed of engine main body 11 reach dangerous rotary speed area A it
Before so that exhaust gas temperature riser 14 is stopped working, can so that the combustion state of engine main body 11 be made to be in stable state
Properly increase engine speed and promptly rotary speed area A out of danger.
[the 4th embodiment]
Fig. 5 is the time diagram of the work of the SCR denitration device in the marine diesel engine for indicate the 4th embodiment.
In addition, the basic structure of the marine diesel engine of present embodiment is the knot roughly the same with above-mentioned first embodiment
Structure is illustrated using Fig. 1, and for the component with effect identical with above-mentioned first embodiment, is marked identical
Appended drawing reference and omit detailed description.
As shown in Figure 1, being detached from danger from current engine speed in the marine diesel engine of the 4th embodiment
Dangerous rotary speed area A rises by after preset stipulated time T3, control device 15 makes exhaust gas temperature riser 14 (14A)
It stops working.
As shown in Fig. 1 and Fig. 5, when the navigation sea area of ship is (ON) in ECA (confined waters), SCR denitration device
13 work (ON) and so that exhaust gas temperature riser 14 is worked and open and take out exhaust gas valve 51, to implement at the denitration of exhaust gas
Reason.Then, at time t31, manipulation handle 71, output rises engine speed and is more than dangerous rotary speed area A
Instruction value.
At time t31, when inputting the instruction value, control device 15 make exhaust gas temperature riser 14 stop working and
It closes and takes out exhaust gas valve 51.In addition, control device 15 makes to send out by implementing to increase the controls such as fuel input amount based on the instruction value
Motivation revolving speed rises.Then, at time t32, although engine speed enters dangerous rotary speed area A, at this point, due to useless
The work of temperature degree riser 14 stops, therefore the combustion state of engine main body 11 is stablized, engine speed promptly on
It rises, at time t33, rotary speed area A out of danger.In addition, T1 during engine speed is present in dangerous rotary speed area A
Interior, although the temperature of exhaust gas rises processing and stops, the temperature of exhaust gas will not decline in advance, and continue to implement the denitration of exhaust gas
Processing.
Then, at time t33, as engine speed rotary speed area A out of danger, from rotary speed area out of danger
A rises at the time t34 that have passed through stipulated time T3, and control device 15 makes exhaust gas temperature riser 14 start to work and open pumping
Exhaust gas valve 51.Then, it is handled by the temperature rising that exhaust gas temperature riser 14 starts again at exhaust gas, and continues to implement useless
The denitration process of gas.Hereafter, at time t35, engine speed reaches target engine speed.Then, at time t36,
When the navigation sea area of ship is in ECA (confined waters) (OFF) outside, SCR denitration device 13 is made to stop (OFF) work, and
So that exhaust gas temperature riser 14 is stopped working and close and take out exhaust gas valve 51, so that the denitration process of exhaust gas terminates.
Like this, out of danger from current engine speed in the marine diesel engine of the 4th embodiment
Rotary speed area A rises by after preset stipulated time T3, control device 15 makes exhaust gas temperature riser 14 start work
Make.Therefore, become that exhaust gas temperature riser 14 is made to work after engine speed completely disengages dangerous rotary speed area A, from
And can ensure the safety of engine main body 11, and can properly implement SCR denitration device 13 to the denitration of exhaust gas at
Reason.
Symbol description
10 marine diesel engines
11 engine main bodies
12 boosters
13 SCR denitration devices
14 exhaust gas temperature risers
15 control devices
21 cylinders
22 scavenging air trunks
23 exhaust manifolds
31 compressors
32 turbines
41 SCR reactors
42 reducer feeding devices
51 take out exhaust gas valve
52 extraction valves
61 aerial coolers
G1 supplies route
G2, G4 exhaust lay out
G3 suction inlet
G5 takes out exhaust gases
G6 is evacuated route
Claims (8)
1. a kind of marine diesel engine, which is characterized in that have:
Engine main body；
Denitrification apparatus, the denitrification apparatus are set to the exhaust lay out for the exhaust gas being discharged from the engine main body；
Exhaust gas temperature riser, the exhaust gas that the opposite denitrification apparatus of the exhaust gas temperature riser flows into heat up；With
And
Control device, the control device control the work of the exhaust gas temperature riser, and in engine speed
The exhaust gas temperature riser is set to stop working when in preset dangerous rotary speed area.
2. marine diesel engine as described in claim 1, which is characterized in that
When input rises engine speed and is more than the instruction value of the dangerous rotary speed area, the control device is described
Instruction value makes the exhaust gas temperature riser stop working when inputting.
3. marine diesel engine as described in claim 1, which is characterized in that
The control device makes the exhaust gas temperature rise dress when current engine speed reaches the dangerous rotary speed area
It sets and stops working.
4. marine diesel engine as described in claim 1, which is characterized in that
The surplus lower limit value of the dangerous rotary speed area is set, the surplus lower limit value of the danger rotary speed area is to described dangerous turn
Obtained from the lower limit value in fast region adds preset margin value, and it is lower than the lower limit value of the dangerous rotary speed area, and
And the control device stops the exhaust gas temperature riser when current engine speed reaches the surplus lower limit value
Only work.
5. marine diesel engine according to any one of claims 1 to 4, which is characterized in that
The control device makes in the exhaust gas temperature when current engine speed has been detached from the dangerous rotary speed area
Device is risen to start to work.
6. marine diesel engine according to any one of claims 1 to 4, which is characterized in that
From current engine speed is detached from the dangerous rotary speed area after the preset stipulated time, the control
Device processed makes the exhaust gas temperature riser start to work.
7. a kind of engine control system, which is characterized in that
Marine diesel engine has:
Engine main body；
Denitrification apparatus, the denitrification apparatus are set to the exhaust lay out for the exhaust gas being discharged from the engine main body；And
Exhaust gas temperature riser, the exhaust gas that the opposite denitrification apparatus of the exhaust gas temperature riser flows into heat up,
In the marine diesel engine, the engine control system to the work of the exhaust gas temperature riser into
Row control, and stop the exhaust gas temperature riser when engine speed is in preset dangerous rotary speed area
Work.
8. a kind of engine control, which is characterized in that have following process:
When ship discharges confined waters at least in Air Pollutants, implement the temperature for making the exhaust gas from engine main body
The processing of rising, and implement the process of the denitration process of exhaust gas；And
When engine speed enters preset dangerous rotary speed area, stop the work for the processing for increase the temperature of exhaust gas
Sequence.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017033666A JP6734796B2 (en) | 2017-02-24 | 2017-02-24 | Marine diesel engine and engine control device and method |
| JP2017-033666 | 2017-02-24 | ||
| PCT/JP2018/005937 WO2018155420A1 (en) | 2017-02-24 | 2018-02-20 | Marine diesel engine, and engine control device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110312856A true CN110312856A (en) | 2019-10-08 |
| CN110312856B CN110312856B (en) | 2021-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880009202.9A Active CN110312856B (en) | 2017-02-24 | 2018-02-20 | Marine diesel engine, engine control device, and method |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6734796B2 (en) |
| KR (1) | KR102194357B1 (en) |
| CN (1) | CN110312856B (en) |
| WO (1) | WO2018155420A1 (en) |
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|---|---|---|---|---|
| JP7199192B2 (en) * | 2018-10-09 | 2023-01-05 | 株式会社ジャパンエンジンコーポレーション | Marine SCR system |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2018155420A1 (en) | 2018-08-30 |
| JP6734796B2 (en) | 2020-08-05 |
| KR102194357B1 (en) | 2020-12-23 |
| CN110312856B (en) | 2021-12-07 |
| KR20190094472A (en) | 2019-08-13 |
| JP2018138775A (en) | 2018-09-06 |
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