DK177494B1

DK177494B1 - Injector for use in dosing system for cylinder lubricating oil for large cylinders

Info

Publication number: DK177494B1
Application number: DKPA201270125A
Authority: DK
Inventors: Peer Bak
Original assignee: Hans Jensen Lubricators As
Priority date: 2011-03-18
Filing date: 2012-03-20
Publication date: 2013-07-15
Also published as: SG193531A1; CN103534447B; CN103534447A; JP6682564B2; KR102002181B1; KR20200091495A; DK2686527T3; HK1197094A1; KR20140010432A; DK177258B1; EP2686527A2; JP2014508890A; CN103939174A; EP3434872A1; EP2686527B1; JP2018066383A; EP2722500B1; EP2722500A3; JP2018109409A; KR102247242B1

Abstract

Der beskrives en injektor til brug i et doseringssystem for cylindersmøreolie til store cylindre i en dieselmotor, for eksempel i skibsmotorer, og omfattende - en smøreolieforsyning, der kan udgøres af en pumpestation eller en akkumulator, - en forsyningsledning fra smøreolieforsyningen, - et antal injektorer der har et indløb, en åbne/lukkeventilenhed samt en eller flere dyseåbninger for at injicere cylindersmøreolie ind i en tilknyttet cylinder, og som er forbundet med nævnte forsyningsledning, og som modsvarer cylinderantal i motoren eller et multiplum heraf samt - en kontrolenhed, der styrer hver åbne/lukkeventilenhed, For at opnå en robust og driftsikker injektor der er enkel i sin virkemåde er injektoren særpræget ved, at åbne/lukkeventilen omfatter et kugleventillegeme samt et samvirkende ventilsæde, at der mellem ventillegemets stamme og væggen i åbne/lukkeventilens ventilstyr er en spalte med en bredde, der over 10 tm.An injector for use in a metering system for cylinder lubricating oil for large cylinders in a diesel engine, for example in marine engines, is disclosed and comprising - a lubricating oil supply which may be a pump station or accumulator, - a supply line from the lubricating oil supply, - a number of injectors which has an inlet, an open / close valve assembly, and one or more nozzle openings for injecting cylinder lubricating oil into an associated cylinder connected to said supply line and corresponding to the cylinder number in the engine or multiple thereof, and - a control unit controlling each open / closure valve unit, In order to obtain a robust and reliable injector that is simple in its operation, the injector is characterized in that the open / close valve comprises a ball valve body as well as a cooperating valve seat, that there is a gap between the stem of the valve body and the wall of the open / close valve control. a width exceeding 10 tm.

Description

i DK 177494 B1in DK 177494 B1

Injektor til brug i doseringssystem for cylindersmøreolie til store cylindreInjector for use in dosing system for cylinder lubricating oil for large cylinders

Opfindelsens område 5 Den foreliggende opfindelse angår en injektor til brug i et doseringssystem for cylindersmøreolie til store cylindre i en dieselmotor, for eksempel i skibsmotorer, hvor doseringssystemet omfatter - en smøreolieforsyning, der kan udgøres af en pumpestation eller en akkumulator, - en forsyningsledning fra smøreolieforsyningen, 10 - en kontrolenhed, hvor injektoren har - et indløb til forbindelse med forsyningsledningen, - en åbne/lukkeventilenhed hvor åbne/lukkeventilen omfatter et ventillegeme med en stamme samt et samvirkende ventilsæde, samt - en eller flere dyseåbninger for at injicere cylindersmøreolie ind i en tilknyttet cylin- 15 der og hvor - kontrolenheden styrer hver åbne/lukkeventilenhed.FIELD OF THE INVENTION The present invention relates to an injector for use in a metering system for large cylinder cylinders in a diesel engine, for example in ship engines, where the metering system comprises - a lubricating oil supply which may be a pumping station or an accumulator, - a supply line from the lubricating oil supply. 10 - a control unit in which the injector has - an inlet for connection to the supply line, - an open / close valve unit where the open / close valve comprises a valve body with a stem and a cooperating valve seat, - - one or more nozzle openings for injecting cylinder lubricating oil into a connected to cylinders and where - the control unit controls each open / close valve unit.

Opfindelsen er primært beregnet til anvendelse i en elektromagnetisk reguleret injektor, hvor doseringsmængden styres via en ventils åbnetid. Dette er til forskel fra andre 20 smøresystemer, hvor doseringsmængden typisk er volumetrisk styret. De doserede oliemængder kan f.eks. være i forstøvet form, med en direkte styring af spray idet ventilen har en indbygget pumpe. I et system vil der primært opereres med en ventil som kontrolleres via en elektromagnet.The invention is primarily intended for use in an electromagnetically controlled injector where the dosage amount is controlled via a valve opening time. This is unlike other 20 lubrication systems where the dosage amount is typically volumetrically controlled. The dosed amounts of oil can e.g. be in atomized form, with a direct control of the spray as the valve has a built-in pump. In a system, a valve will primarily be operated via an electromagnet.

Opfindelsens baggrund 25 I dag findes både mekaniske, hydrauliske og elektromekaniske cylindersmøresyste-mer.BACKGROUND OF THE INVENTION Today there are both mechanical, hydraulic and electromechanical cylinder lubrication systems.

Kendte løsninger i dag, baseret på tidsstyret dosering, har den ulempe, at mængden er meget afhængig af flow og viskositetsforhold i olieforsyningsledninger.Known solutions today, based on time-controlled dosing, have the disadvantage that the amount is highly dependent on flow and viscosity conditions in oil supply lines.

30 2 DK 177494 B130 2 DK 177494 B1

Fra EP O 049 603 kendes en elektromekanisk injektor. Der anvendes en flowdetektor, der har indbygget switch funktion, og som giver et signal, når der er flow. Flowet overvåges af flowdetektoren og varigheden af flowet sammenlignes med manuelt fastsatte grænseværdier. Der er ikke tale om flowmålinger, men kun en kontrol af start og 5 stop for et flowsignal.EP 0 049 603 discloses an electromechanical injector. A flow detector is used which has a built-in switch function and gives a signal when there is flow. The flow is monitored by the flow detector and the duration of the flow is compared with manually set limit values. These are not flow measurements, but only a start check and 5 stops for a flow signal.

Fra EP1 426 571 kendes en injektor samt et cylindersmøresystem. Denne teknik er baseret på et system, hvor der til hver cylinder findes en magnetventil, der åb-ner/lukker for flowet ud til de enkelte ventiler. Denne konstruktion har den ulempe, at 10 der stilles store krav til, at flow- og viskositetsforhold er ens i olieforsyningsledninger, for at undgå at der ellers leveres forskellige oliemængder per ventil. For eksempel skal længder og temperaturforhold i olieforsyningsledningerne holdes meget ensartet for at sikre en ’’jævn fordeling” mellem alle smørestedeme. Dette er et stort problem i praksis. Den kendte teknik har en anden ulempe. Ved funktionsovervågning anvendes en 15 tryksensor, der overvåger forsyningstrykket ud til alle injektorerne. Ud fra praktiske forsøg har man så lært styringen at genkende mønstre på en eller flere fejlende ventiler. Denne fremgangsmåde stiller store krav til de empiriske data, der skal bruges for at overvåge injektorerne, og af samme årsag optræder der usikkerhed herom.EP1 426 571 discloses an injector and a cylinder lubrication system. This technique is based on a system in which for each cylinder there is a solenoid valve which opens / closes the flow out to the individual valves. This construction has the disadvantage that high demands are made for flow and viscosity ratios to be the same in oil supply lines, to avoid otherwise delivering different amounts of oil per valve. For example, the lengths and temperature conditions of the oil supply lines must be kept very uniform to ensure a '' even distribution '' between all the lubrication points. This is a major problem in practice. The prior art has another disadvantage. For function monitoring, a pressure sensor is used which monitors the supply pressure to all the injectors. Based on practical experiments, the control system has learned to recognize the patterns of one or more failing valves. This approach places great demands on the empirical data to be used to monitor the injectors, and for the same reason there is uncertainty.

20 Fra EP 1 426 571 kendes også lokale injektorer, der er baseret på, at man anvender en nåleventil med et ventillegeme i form af en nål og et tilsvarende ventilsæde. Hvis nålen er skråtstillet i forhold til sædet eller ikke er liniestillet med sædet, optræder der lækage. Nålen skal derfor styres, således at nålen ikke forskydes radialt i forhold til ventilsædet. Dette opnås typisk ved at have fine tolerancer og pasning på nålen og 25 ventilens boring (nålestyr), hvori nålen er placeret. Der er ulemper ved denne konstruktion, idet injektorerne typisk har en betydelig længde, da de strækker sig igennem en relativ bred cylindervæg og - foring. Yentilsædet skal være tættest muligt på dyseåbningen for at reducere det dødvolumen, der skal flyttes/accelereres, før ventilen begynder at levere olien. Dette betyder, at de relativt fine tolerancer på dysens boring, 30 hvori nålen er placeret, og nålen, skal etableres med en stor længde for at sikre, at nålen er centreret korrekt i sædet. Denne fine tolerance og pasning mellem nålestyret og nålen betyder, at ventilen er følsom overfor skidt og smuds i rørføring og smøreolie, da dette kan sætte sig fast i den meget smalle spalte, der optræder mellem nålen og 3 DK 177494 B1 nålestyret, hvilket betyder, at der stilles relativ store krav til renheden af den olie, der tilføres injektoren. Dette kan forårsage, at nålen decentreres i forhold til sædet, eller at nålens bevægelse blokeres. I begge tilfælde er det en reduktion af ventilens funktion.20 From EP 1 426 571 local injectors are also known which are based on the use of a needle valve with a valve body in the form of a needle and a corresponding valve seat. If the needle is inclined to the seat or is not aligned with the seat, leakage occurs. The needle must therefore be guided so that the needle does not move radially with respect to the valve seat. This is typically achieved by having fine tolerances and care of the needle and valve bore (needle guide) in which the needle is located. There are drawbacks to this construction, the injectors typically having a considerable length as they extend through a relatively wide cylinder wall and liner. The shaft seat must be as close as possible to the nozzle opening to reduce the dead volume to be moved / accelerated before the valve begins to deliver the oil. This means that the relatively fine tolerances on the bore of the nozzle, in which the needle is located and the needle, must be established at great length to ensure that the needle is centered properly in the seat. This fine tolerance and fit between the needle guide and the needle means that the valve is sensitive to dirt and dirt in the piping and lubricating oil, as this can get stuck in the very narrow gap that exists between the needle and the needle guide, meaning, that relatively high demands are made on the purity of the oil supplied to the injector. This can cause the needle to decenter with respect to the seat or block the movement of the needle. In both cases, it is a reduction of valve function.

Dette betyder, at der stilles store krav til renheden af den olie, der tilføres injektoren.This means that there are high demands on the purity of the oil supplied to the injector.

55

Endvidere kendes der fra WO 0235068 Al en injektor af den indledningsvis nævnte type. For denne injektor gælder ligeledes, at tolerance og pasning mellem nålestyret og nålen betyder, at ventilen er følsom overfor skidt og smuds i rørføring og smøreolie, da dette kan sætte sig fast i den meget smalle spalte, der optræder mellem nålen 10 og nålestyret, hvilket betyder at der stilles relativ store krav til renheden af den olie, der tilføres injektoren.Furthermore, from WO 0235068 A1 an injector of the type mentioned initially is known. For this injector, the tolerance and fit between the needle guide and the needle also means that the valve is sensitive to dirt and dirt in the piping and lubricating oil, as this can get stuck in the very narrow gap that occurs between the needle 10 and the needle guide, which means that relatively high demands are made on the purity of the oil supplied to the injector.

I praksis kan det i nogle tilfælde være vanskeligt at sikre en tilstrækkelig renhed af den tilførte smøreolie, f.eks. under installation eller udskiftning af injektorer eller i 15 forbindelse med længere tids stilstand. I disse tilfælde vil en filtrering i tilførslen til injektorerne, svarende til den typiske spalteåbning 5-10 pm eller finere være ønskelig, men en sådan fin filtrering har i praksis vist sig vanskelig at etablere. Typisk vil man få problemer med at etablere en stabil smøreolietilførsel, hvor filteret ikke clog-ger/blokerer med jævne mellemrum. Generelt anvendes centrale filtre for hele syste-20 met, da lokale filtre ved hver cylinder eller injektor er vanskelige at placere og vedligeholde. Typisk er der intet problem med en central filtrering af olien, som er tilstrækkelig til at dyseåbning(er) i de enkelte injektorer ikke blokeres. I nogle tilfælde anvendes en strainer/filter, der installeres lokalt på de enkelte injektorer. Men disse er vanskeligt tilgængelige og vanskelige at rengøre/servicere. Til et doseringssystem for 25 cylindersmøreolie anvendes et antal elektromekaniske injektorer, der sidder monteret i cylindervæggen og leverer smøreolie ind i cylinderen. For injektorer gælder, at de arbejder med en nåleventil og - at injektorerne sidder ind igennem en cylinderforing og eventuel kølekappe, der betyder, at afstanden fra udvendigt kontur og indvendig cylinder diameter 30 er mellem 80 og 200 mm. Derved bliver der behov for en lang nål, og længden af nålen, som skal styres, er proportional med længden af nålen. Det er nødvendigt at styre tæt på ventilsædet af hensyn til tætningen mellem nålen og 4 DK 177494 B1 sædet. Derfor optræder et relativt langt nålestyr hvilket giver stor risiko for at smuds og fremmedlegemer kan komme i klemme og skade ventilens funktion, at ventilsædet på injektoren skal være tættest mulig på injektorens dyseåbning for at minimere dødvolumen mellem dyseåbning og ventilsæde.In practice, in some cases it may be difficult to ensure sufficient purity of the lubricating oil supplied, e.g. during installation or replacement of injectors or in connection with prolonged downtime. In these cases, a filtration in the supply to the injectors, similar to the typical gap opening 5-10 microns or more, would be desirable, but such fine filtration has in practice proved difficult to establish. Typically, you will have trouble establishing a stable lubricating oil supply where the filter does not clog / block at regular intervals. In general, central filters are used for the entire system, as local filters at each cylinder or injector are difficult to place and maintain. Typically, there is no problem with a central filtration of the oil sufficient to prevent the nozzle opening (s) in the individual injectors. In some cases, a strainer / filter is used which is installed locally on the individual injectors. But these are difficult to access and difficult to clean / service. For a dosing system for 25 cylinder lubricating oil, a number of electromechanical injectors are used which are mounted in the cylinder wall and deliver lubricating oil into the cylinder. For injectors, they operate with a needle valve and - the injectors fit through a cylinder liner and any cooling jacket, which means that the distance from the outer contour to the inside cylinder diameter 30 is between 80 and 200 mm. Thereby, a long needle is needed, and the length of the needle to be controlled is proportional to the length of the needle. It is necessary to control close to the valve seat for the sake of the seal between the needle and the 4 DK 177494 B1 seat. Therefore, a relatively long needle guide is present which gives great risk of dirt and foreign bodies being trapped and damaging the valve's function, so that the valve seat on the injector must be as close as possible to the injector's nozzle opening to minimize the dead volume between nozzle opening and valve seat.

5 - at der stilles særlige krav til design og fremstilling, og at det er nødvendigt at have relativt fine tolerancer på pasningen mellem nålestyr og ventillege-me/ventilnål for dermed at sikre, at ventillegemet/ventilnålen er centreret korrekt i forhold til ventilsædet.5 - that special requirements are made for design and manufacture and that it is necessary to have relatively fine tolerances for the fit between needle guide and valve body / valve needle to ensure that the valve body / needle is centered correctly with respect to the valve seat.

10 I praksis, når der arbejdes med nåleventiler, kan det i midlertidig være vanskeligt at filtrere partikler ud af smøreolien med størrelse helt ned til den typiske spalteåbning, som anvendes i nåleventiler, nemlig 5-10 μτη eller finere. Typisk anvendes centrale filtre for hele systemet, da cylinder lokale filtre vil være vanskelige placere og vedligeholde. Typisk er der intet problem med at filtrere olien lokalt eller centralt med et 15 filter, der frafiltrerer partikler større end 0,0lmm, typisk har man i praksis erfaring for, at der kun kan anvendes et centralt filter med maskestørrelse på 0,025 mm eller større.10 In practice, when working with needle valves, it may be difficult to temporarily filter out particles of the lubricating oil of size down to the typical gap opening used in needle valves, namely 5-10 μτη or finer. Typically, central filters are used throughout the system as cylinder local filters will be difficult to place and maintain. Typically, there is no problem with filtering the oil locally or centrally with a filter that filters out particles larger than 0.0mm, typically it has been practiced in practice that only a central filter with mesh size of 0.025 mm or larger can be used.

En sådan filtrering er tilstrækkelig til, at der ikke sker tilstopning af dyseåbningen eller dyseåbningerne i de enkelte injektorer. For at forhindre eventuel uren olie i at blokere/”sætte sig fast” i spalten mellem nålen og nålestyret er der behov for en stor 20 spalte, samt en ny type ventillegeme og ventilsæde, da større spalte vil gøre en nåleventil uegnet til brugen.Such filtration is sufficient so that nozzle or nozzle openings in the individual injectors do not clog. In order to prevent any impure oil from blocking / "getting stuck" in the gap between the needle and the needle guide, a large 20 gap is needed, as well as a new type of valve body and valve seat, as a larger gap will make a needle valve unsuitable for use.

Opfindelsens formålThe object of the invention

Det er formålet med den foreliggende opfindelse at anvise en injektor, der bidrager til at undgå ulemper ved de kendte systemer, og som vil være mere robust/driftsikker og 25 enkel i sin virkemåde.It is the object of the present invention to provide an injector which helps to avoid the disadvantages of the known systems and which will be more robust / reliable and simple in its operation.

Beskrivelse af opfindelsenDescription of the Invention

Injektoren ifølge opfindelsen er særpræget ved, at injektoren omfatter et kugleventil-legeme, og at der mellem kugleventillegemets stamme og væggen i åb-ne/lukkeventilens ventilstyr er en spalte med en bredde, der er over 10 μτη.The injector according to the invention is characterized in that the injector comprises a ball valve body and that between the ball valve body and the wall of the open / close valve control there is a gap with a width of more than 10 μτη.

Injektoren ifølge denne opfindelse er udstyret med et kugleventillegeme og et samvirkende ventilsæde, der typisk er konisk, men som også kan være dannet med en form 30 5 DK 177494 B1 svarende til kuglens form. Tætning er sikret selv ved store spaltearealer således, at spaltearealet ikke bliver flowbegrænsende, hvilket betyder, at arealet af spalten minimum skal svare til det samlede dyseåbningsareal således, at hvis der er flere dyseåbninger per injektor, anvendes summen af dyseåbningsarealerne.The injector of this invention is provided with a ball valve body and a cooperating valve seat which is typically tapered but which may also be formed with a shape similar to the shape of the ball. Sealing is ensured even at large gap areas so that the gap area does not become flow limiting, which means that the area of the gap must at least correspond to the total nozzle opening area so that if there are multiple nozzle openings per injector, the sum of the nozzle opening areas is used.

5 I praksis kan dette betyde, at spalten kan være ned til 0,005 mm, da en partikel på ca.In practice, this may mean that the gap may be down to 0.005 mm, since a particle of approx.

0,01 mm vil kunne presse ventillegemet til den ene side og forøge spaltebredden til 0,01. Herved tillades passage af partikler med en størrelse på 0,01 uden, at ventillegemets bevægelse blokeres, og uden at ventilen bliver utæt, idet kuglelegemet vil gå i 10 tæt anlæg mod sædet.0.01 mm will be able to push the valve body to one side and increase the gap width to 0.01. This permits passage of particles with a size of 0.01 without blocking the movement of the valve body and without leaking the valve, the ball body going into close contact with the seat.

Spaltebredden (radiusforskel) vil dog typisk være ca. 0,15 mm eller større, da injektorens dyseåbninger typisk er 0,3 mm eller større. Tilsvarende kan filtre være grovere og tillade større partikler afhængig af dyseåbningernes størrelse.However, the gap width (radius difference) will typically be approx. 0.15 mm or greater, as the injector nozzle openings are typically 0.3 mm or greater. Similarly, filters can be coarser and allow larger particles depending on the size of the nozzle openings.

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Anvendelse af kugleventiltypen gør det muligt at forhindre smuds og partikler i at blokere ventillegemets bevægelse, da den kan operere på sikker måde selv med en stor spalte, hvor der er afstand mellem ventillegemets stamme og boringen således, at boringen ikke optræder som et ventilstyr for ventilstammen. En sådan bred spalte ville 20 gøre en nåleventil uegnet til brugen.Use of the ball valve type makes it possible to prevent dirt and particles from blocking the movement of the valve body as it can operate safely even with a large gap where there is a distance between the stem of the valve body and the bore so that the bore does not act as a valve guide for the valve stem. . Such a wide gap would render a needle valve unsuitable for use.

Injektoren er enkel at fremstille uden snævre tolerancer og kompliceret montering.The injector is simple to manufacture without narrow tolerances and complicated assembly.

Tværsnitsmålet for en dyseåbning er typisk en diameter for cirkulære dyseåbninger.The cross-sectional dimension of a nozzle opening is typically a diameter for circular nozzle openings.

2525

Injektoren ifølge opfindelsen kan anvendes ved en fremgangsmåde til dosering af cylindersmøreolie til store cylindre i en dieselmotor, for eksempel i skibsmotorer, og omfattende trinnene for - tryksætning af smøreolien i en smøreolieforsyning, der kan udgøres af en pumpesta-30 tion eller en akkumulator, - fremføring af smøreolien gennem en forsyningsledning fra smøreolieforsyningen, 6 DK 177494 B1 - injicering af smøreolien via et antal injektorer ifølge opfindelsen der har et indløb, en åbne/lukkeventilenhed samt en eller flere dyseåbninger ind i en tilknyttet cylinder, idet injektoren forbindes med nævnte forsyningsledning, samt - en styring af hver åbne/lukkeventilenhed ved hjælp af en kontrolenhed, hvilken me- 5 tode endvidere omfatter trinnene for - en lokal flowmåling for hver injektor og/eller en cylinder central flowmåling af den faktisk doserede oliemængde per injektor, - fremsendelse af resultat af flowmåling til kontrolenheden, - sammenligning af flowmålingen af den faktisk doserede oliemængde med en forven- 10 tet/planlagt oliemængde og - at kontrolenheden sender styresignal til åbne/lukkeventilenheden for regulering af timing og oliemængde i det omfang, det er påkrævet.The injector according to the invention can be used in a method for dosing cylinder lubricating oil for large cylinders in a diesel engine, for example in marine engines, and comprising the steps of - pressurizing the lubricating oil into a lubricating oil supply which can be a pump station or an accumulator, - supplying the lubricating oil through a supply line from the lubricating oil supply, B1 - injecting the lubricating oil via a plurality of injectors according to the invention having an inlet, an open / close valve unit and one or more nozzle openings into an associated cylinder, the injector being connected to said supply line, and - a control of each open / close valve unit by means of a control unit, which method further comprises the steps of - a local flow measurement for each injector and / or a cylinder central flow measurement of the actual metered amount of oil per injector, - transmission of results of flow measurement to the controller, - comparison of flowm progress of the actual dosed quantity of oil with an expected 10 Tet / planned volume of oil and - that the control unit sends the control signal to the open / close valve unit for regulating the timing and amount of oil to the extent required.

Injektoren ifølge opfindelsen kan anvendes i et doseringssystem for cylindersmøreolie 15 til store cylindre i en dieselmotor, for eksempel i skibsmotorer, og omfattende - en smøreolieforsyning, der kan udgøres af en pumpestation eller en akkumulator, - en forsyningsledning fra smøreolieforsyningen, - et antal injektorer ifølge opfindelsen der har et indløb, en åbne/lukkeventilenhed samt en eller flere dyseåbninger for at injicere cylindersmøreolie ind i en tilknyttet 20 cylinder, og som er forbundet med nævnte forsyningsledning, og som modsvarer cylinderantal i motoren eller et multiplum heraf samt - en kontrolenhed, der styrer hver åbne/lukkeventilenhed, og hvilket doserings system omfatter en flowmåleenhed for hver injektor og/eller for hver cylinder, og at flowmå-leenhedeme er forbundet med kontrolenheden for anvendelse i et lukket sløjferegule- 25 ring.The injector according to the invention can be used in a metering system for cylinder lubricating oil 15 for large cylinders in a diesel engine, for example in marine engines, and comprising - a lubricating oil supply which can be constituted by a pump station or accumulator, - a supply line from the lubricating oil supply, - a plurality of injectors according to the invention having an inlet, an open / close valve assembly as well as one or more nozzle openings for injecting cylinder lubricating oil into an associated cylinder connected to said supply line and corresponding to the cylinder number in the engine or a multiple thereof and a control unit which controls each open / close valve assembly and which metering system comprises a flow measurement unit for each injector and / or for each cylinder and that the flow measurement units are connected to the control unit for use in a closed loop control.

Der kan til hver cylinder anvendes fra 4 til 10 injektorer.From 4 to 10 injectors can be used for each cylinder.

Der kan være anbragt en lokal trykakkumulator for hver injektor eller til alle injekto-30 rerne tilhørende hver enkelt cylinder.A local pressure accumulator may be provided for each injector or for all the injectors associated with each cylinder.

7 DK 177494 B17 DK 177494 B1

Hver injektor kan være fremstillet som en enhed, hvor åbne/lukkeventilen er en i injektoren integreret elektromekanisk ventil til dosering af smøreolien, hvor den elek-tromekaniske åbne/lukkeventil omfatter en fjederpåvirket ventilstamme.Each injector may be manufactured as a unit wherein the open / close valve is an electromechanical valve integrated into the injector for metering the lubricating oil, the electromechanical open / close valve comprising a spring actuated valve stem.

5 En injektor ifølge opfindelsen kan anvendes i et doseringssystem, som omfatter flow-måleenheder med samme driftsområde for hver injektor og for hver cylinder, og hvor kontrolenheden er forbundet med alle flowmåleenhedeme og er indrettet for at modtage signal fra flowmåleenhedeme ved injektorerne ved relativ store flow og for at modtage signal fra de cylinder centrale flowmåleenheder ved relativ lave flow.An injector according to the invention can be used in a metering system which comprises flow measuring units having the same operating range for each injector and for each cylinder, and wherein the control unit is connected to all the flow measuring units and is arranged to receive signal from the flow measuring units at the injectors at relatively large flow. and to receive signal from the cylinder central flow measurement units at relatively low flow.

1010

En injektor ifølge opfindelsen kan anvendes i et doseringssystem, som omfatter flowmåleenheder med forskellig driftsområde for hver injektor og for hver cylinder, hvor kontrolenheden er forbundet med alle flowmåleenhedeme, hvor flowmåleenhedeme med lavest driftsområde er de lokale flowmåleenheder, som er forbundet med injekto-15 rerne, og hvor flowmåleenhedeme med højeste operating range er de cylinder centrale flowmåleenheder.An injector according to the invention can be used in a metering system comprising flow measuring units with different operating ranges for each injector and for each cylinder, where the control unit is connected to all the flow measuring units, the flow measuring units with the lowest operating range being the local flow measuring units connected to the injectors. and where the flow measurement units with the highest operating range are the cylinder central flow measurement units.

Ifølge en yderligere udførelsesform for opfindelsen er injektoren særpræget ved, at ventilsædet er konisk.According to a further embodiment of the invention, the injector is characterized in that the valve seat is tapered.

2020

Ifølge en yderligere udførelsesform for opfindelsen er injektoren særpræget ved, at arealet af spalten minimum skal svare til det samlede areal af injektorens dyseåb-ning(er).According to a further embodiment of the invention, the injector is characterized in that the area of the gap must at least correspond to the total area of the injector nozzle opening (s).

25 Ifølge en yderligere udførelsesform for opfindelsen er injektoren særpræget ved, at injektoren omfatter et filter og at åbne/lukkeventilens spalte minimum har samme bredde svarende til halvdelen af filterets maskestørrelse.According to a further embodiment of the invention, the injector is characterized in that the injector comprises a filter and that the open / close valve gap minimum has the same width corresponding to half the filter mesh size.

Ifølge en yderligere udførelsesform for opfindelsen er injektoren særpræget ved, at 30 den omfatter en elektromekanisk aktuator, fortrinsvis i form af en magnetventil eller et piezo elektrisk element.According to a further embodiment of the invention, the injector is characterized in that it comprises an electromechanical actuator, preferably in the form of a solenoid valve or a piezo electrical element.

8 DK 177494 B18 DK 177494 B1

Ifølge en yderligere udførelsesform for opfindelsen er injektoren særpræget ved, at den har et udtag til forbindelse med en returledning for at bortlede overskydende olie eller til at udføre trykmålinger.According to a further embodiment of the invention, the injector is characterized in that it has an outlet for connection with a return line for discharging excess oil or for carrying out pressure measurements.

5 Ifølge en yderligere udførelsesform for opfindelsen er injektoren særpræget ved, at injektoren omfatter et flowskueglas eller en flowswitch for visuelt eller elektronisk at indikere et faktisk flow.According to a further embodiment of the invention, the injector is characterized in that the injector comprises a flow sight glass or a flow switch for visual or electronic indication of an actual flow.

Ifølge en yderligere udførelsesform for opfindelsen er injektoren særpræget ved, at 10 den er indrettet til at arbejde med et forsyningstryk mellem 30 og 100 bar.According to a further embodiment of the invention, the injector is characterized in that it is adapted to operate at a supply pressure between 30 and 100 bar.

Ifølge en yderligere udførelsesform for opfindelsen er injektoren særpræget ved, at den er indrettet til at arbejde med kompakt jet(s).According to a further embodiment of the invention, the injector is characterized in that it is adapted to work with compact jet (s).

Ifølge en yderligere udførelsesform for opfindelsen er injektoren særpræget ved, at 15 den er indrettet til at arbejde med forstøvet spray(s).According to a further embodiment of the invention, the injector is characterized in that it is adapted to work with atomized spray (s).

Ifølge en yderligere udførelsesform for opfindelsen er injektoren særpræget ved, at spaltebredden mellem ventillegemets stamme og en boring, hvori stammen er optaget, som minimum har den halve størrelse af tværsnitsmål for en dyseåbning.According to a further embodiment of the invention, the injector is characterized in that the gap width between the stem of the valve body and a bore in which the stem is accommodated has at least half the size of cross-sectional dimensions for a nozzle opening.

2020

Til hver injektor eller til alle injektorer tilhørende en cylinder skal et pulserende flow måles løbende.For each injector or all injectors belonging to a cylinder, a pulsating flow must be continuously measured.

I tilfælde af fejlende injektorer kan de øvrige injektorer automatisk supplere/erstatte 25 en eller flere fejlende injektorer baseret på styringen i kontrolenheden og den lukkede sløjferegulering.In the case of failing injectors, the other injectors can automatically supplement / replace one or more failing injectors based on the control of the controller and the closed loop control.

Det foretrækkes at have doseringsenhedens åbne/lukke funktion integreret i injektoren, samtidig med at styringen er opbygget, så man på baggrund af aktuelle målinger 30 af forbrug/flow kan kontrollere leveringsmængdeme og hermed fjerne usikkerheder som følge af viskositet (temperatur, olietype), længder samt diametre for forsyningsledninger.It is preferable to have the metering unit's open / close function integrated into the injector while the control is built up, so that on the basis of current measurements 30 consumption / flow it is possible to control the delivery quantities and thus remove uncertainties due to viscosity (temperature, oil type), lengths as well as supply line diameters.

9 DK 177494 B19 DK 177494 B1

Grundidéen med at anvende en injektor med integreret åbne/lukkeventil, fortrinsvis som en magnet-ventil, således at både rørføring og trækningen af kabler forenkles betragteligt, ved kun at have en fælles forsyningsledning af tiyksat smøreolie (uden behov for returledning), bevirker at, doseringen bliver proportional med den tid, hvor 5 åbne/lukke ventilen/magnetventilen er åben. Der er fortrinsvis en separat lokal styreboks, der benyttes til at åbne/lukke injektoren baseret på signaler fra skibets mo-tor/kontrolenheden.The basic idea of using an injector with integrated open / close valve, preferably as a solenoid valve, so that both piping and the drawing of cables is considerably simplified, by having only a common supply line of lubricated lubricating oil (without the need for a return line), the dosage becomes proportional to the time when the 5 open / close valve / solenoid valve is open. Preferably, there is a separate local control box used to open / close the injector based on signals from the ship's engine / control unit.

En elektromekanisk reguleret injektor udviklet til cylindersmøring af store dieselmo-10 torer indebærer fordele i forhold til kendte smøresystemer. Den kan systemmæssigt regulere individuel med hensyn til smøreoliemængde og timing.An electromechanically regulated injector developed for cylinder lubrication of large diesel engines offers advantages over known lubrication systems. It can systematically regulate individual in terms of lubricating oil quantity and timing.

Funktionen er kun afhængig af en kontrolboks, som kan styre hver enkelt injektor separat eller samlet med hensyn til timing og åbningstid. Dette kan ske uafhængig af 15 andre åbne/lukkeventiler og er kun begrænset af den hastighed, hvormed åb-ne/lukkeventilen i en injektor kan afvikle åbne/lukke cyklussen.The function is dependent only on a control box that can control each injector separately or in total in terms of timing and opening time. This can happen independently of 15 other open / close valves and is limited only by the speed at which the open / close valve in an injector can run the open / close cycle.

Injektoren er ufølsom over for partikler, der er mindre end dyseåbningen, og som er større end spaltebredden. Derved kan der arbejdes med en relativ grov filtrering af 20 olien. Der er ingen risiko for, at ventillegeme/kugle vil sætte sig fast, selvom olien indeholder små partikler med størrelse på 10 pm eller større. Det vil være problemløst at operere med spaltebredder på 10 μιη og op til 0,3 mm eller større i åb-ne/lukkeventilen. Sædet i ventilen er udformet som sædet i en kontraventil, typisk med en konisk form, og olietrykket i ventilen vil sammen med et lukkeelement/fjeder 25 holde ventilen lukket.The injector is insensitive to particles smaller than the nozzle opening and larger than the gap width. This allows a relatively coarse filtration of the oil to be worked. There is no risk that the valve body / ball will get stuck, even if the oil contains small particles of size 10 µm or larger. It will be trouble-free to operate with gap widths of 10 μιη and up to 0.3 mm or greater in the open / close valve. The seat in the valve is designed as the seat in a non-return valve, typically with a conical shape, and the oil pressure in the valve together with a closing element / spring 25 will keep the valve closed.

Selvom der kommer en partikel ind i ventilen, som er større end spaltebredden (målt som en forskel mellem radius på ventillegeme/ventilstammen og radius på ventilhusets boring hvori ventilstammen er placeret - radiusforskel) således, at ventilstammen 30 skråtstilles eller forskydes til en decentral stilling, hvor ventilsædet og ventilstammen ikke er liniestillet, så vil kugleformen sikre, at ventilen holder tæt. Skråstilling kan eventuelt også optræde på grund af motorvibrationer. Denne tæthed er også sikret med en relativ stor spalteåbning mellem ventillegemet og væggen i boringen.Although a particle enters the valve which is greater than the gap width (measured as a difference between the radius of the valve body / valve stem and the radius of the bore of the valve body in which the valve stem is located - radius difference) such that the valve stem 30 is inclined or displaced to a decentralized position, where the valve seat and valve stem are not aligned, the spherical shape will ensure that the valve holds tightly. Tilting may also occur due to motor vibrations. This tightness is also ensured with a relatively large gap opening between the valve body and the wall of the bore.

10 DK 177494 B110 DK 177494 B1

Eneste kritiske slidflade er ventilsædet, som er selvjusterende hvilket giver stor pålidelighed af ventilfunktionen i injektoren.The only critical wear surface is the valve seat, which is self-adjusting which gives high reliability of the valve function in the injector.

Til en cylinder anvendes mellem 4 og 10 injektorer afhængig af motorstørrelse og 5 type.For a cylinder, between 4 and 10 injectors are used depending on engine size and 5 type.

Doseringssystemet opererer via en tryksat forsyningsledning med smøreolie. Smøreolien holdes ved et konstant tryk og af hensyn til at minimere forstyrrelser/variationer i trykforsyningsledningen til de enkelte cylindre/injektorer, kan der være behov for at 10 placeres akkumulatorer per injektor og/eller centralt per cylinder.The dosing system operates via a pressurized supply line with lubricating oil. The lubricating oil is kept at a constant pressure and in order to minimize disturbances / variations in the pressure supply line for the individual cylinders / injectors, 10 accumulators per injector and / or central per cylinder may be required.

Alternativt til at bruge akkumulatorer i systemet kunne man anvende forsyningsrør med større lysning, således at rørene i sig selv bliver en akkumulator.Alternatively, to use accumulators in the system, one could use supply pipes with greater illumination so that the pipes themselves become an accumulator.

15 En alternativ udførsel kunne være, at injektorerne til en cylinder(med separat kontrolboks per injektor eller cylinder) i fællesskab sikrer håndteringen af fejl, for eksempel i form af at øge doseringsmængden på enkelt smøresteder eller eventuel via en cylinder central kontrolboks.An alternative embodiment could be that the injectors for a cylinder (with separate control box per injector or cylinder) jointly ensure the handling of errors, for example by increasing the dosage amount at single lubrication points or possibly via a cylinder central control box.

20 Der er mulighed for at gøre injektoren intelligent ved at udbygge systemet, som i særlige udførelsesformer kan omfatte sensor, som kan måle tryk, temperatur, eller udtage olieprøver for analyse. Tryk giver information om stempelpositionsbestemmelse samt viden om motorens belastning. Temperatur siger noget om tilstanden i cylinderen. Olieprøver kan danne basis for vurdering af smøretilstanden. På baggrund af data kan 25 indsprøjtnings tidspunkt og -længde beregnes ud fra en given reguleringsalgoritme i kontrolenheden.It is possible to make the injector intelligent by expanding the system, which in particular embodiments may include sensors which can measure pressure, temperature, or take oil samples for analysis. Pressure provides information on piston position determination as well as knowledge of engine load. Temperature says something about the state of the cylinder. Oil tests can form the basis for assessing the lubrication condition. Based on data, 25 injection time and length can be calculated from a given control algorithm in the control unit.

Hermed opnås den størst mulige redundans, idet sandsynligheden for at flere end én injektor svigter samtidig er begrænset samtidig med, at injektoren ved netnedbrud 30 fortsætter sin funktion ud fra allerede givne data.This results in the greatest possible redundancy, since the probability that more than one injector fails at the same time is limited while the injector at mains failure 30 continues its function from already given data.

Installation og udskiftning af injektorer lettes, idet de er selvjusterende.Installing and replacing injectors is easy, as they are self-adjusting.

11 DK 177494 B111 DK 177494 B1

Hver injektor har egen tidsstyret doseringsenhed, hvor timing og doseringsmængde styres af injektorens åbne- og lukke tidspunkt.Each injector has its own time-controlled metering unit, where timing and metering amount are controlled by the injector's open and close timing.

Injektoren kan enten være forsynet med en forstøverventil eller en ventil med en eller 5 flere stråler/kompakte jets.The injector can either be provided with an atomizer valve or a valve with one or more jets / compact jets.

Injektoren kan laves i en udførelsesform, hvor man kun forsyner den med tryksat smøreolie og uden returledninger. Typiske forsyningstryk på mellem 30 og 100 bar.The injector can be made in an embodiment where it is supplied only with pressurized lubricating oil and without return lines. Typical supply pressures of between 30 and 100 bar.

10 Injektoren kan aktueres elektromekanisk, for eksempel i form af magnetventil eller piezomekanisk element.The injector may be actuated electromechanically, for example in the form of solenoid valve or piezomechanical element.

En alternativ udførsel kunne være at injektoren, som nævnt ovenfor, udstyres med et flowskueglas eller en flowswitch, der visuelt eller elektronisk indikerer et faktisk 15 flow. På denne måde vil man have en direkte indikator af, om den enkelte injektor er aktiv og fungerer. På nogle motorer placeres enkelte injektorer på svært tilgængelige steder, og her vil det være en fordel med en elektronisk overvågning, der detekteres lokalt men rapporteres centralt. Et eksempel på en sådan løsning kunne være en konisk boring i et kuglekontrolglas, hvor der er placeres en sensor, der detekterer på en 20 kugle.An alternative embodiment could be that the injector, as mentioned above, is equipped with a flow sight glass or a flow switch that visually or electronically indicates an actual flow. In this way you will have a direct indicator of whether the individual injector is active and functioning. On some engines, individual injectors are placed in hard-to-reach locations, and here it will be an advantage with an electronic monitoring that is detected locally but reported centrally. An example of such a solution could be a tapered bore in a ball control glass, where a sensor detecting on a ball is placed.

Sammenfattende kan fordele ved opfindelsen blandt andet siges at omfatte: - Viskositetsuafhængig injektor-/smøresystem.In summary, advantages of the invention may be said to include, inter alia: - Viscosity independent injector / lubrication system.

- Forenklet injektor design.- Simplified injector design.

25 Tegningsbeskrivelse25 Drawing Description

Opfindelsen vil herefter blive forklaret nærmere under henvisning til den medfølgende tegning, hvor fig. 1 viser en principskitse af et doseringssystem, hvori der indgår en injektor ifølge opfindelsen, 30 fig. 2.1 viser en yderligere udførelsesform for et system, hvori der indgår en injektor ifølge opfindelsen, fig. 2.2 viser en detalje ved det i fig. 2.1 viste system, DK 177494 B1 12 fig. 3 viser en yderligere udførelsesform for et system, hvori der indgår en injektor ifølge opfindelsen, fig. 4 viser detailbilleder af en injektor ifølge opfindelsen, og fig. 5 viser en alternativ udførelsesform for en injektor ifølge opfindelsen.The invention will then be explained in more detail with reference to the accompanying drawing, in which fig. 1 is a schematic diagram of a dosing system incorporating an injector according to the invention; FIG. 2.1 shows a further embodiment of a system incorporating an injector according to the invention; 2.2 shows a detail of the device shown in FIG. 2.1, FIG. 177494 B1 12 FIG. Figure 3 shows a further embodiment of a system incorporating an injector according to the invention; 4 shows detail views of an injector according to the invention, and fig. 5 shows an alternative embodiment of an injector according to the invention.

5 Detaljeret beskrivelse af opfindelsenDetailed Description of the Invention

Figur 1 viser et komplet smøresystem til N cylindre 1. Hver cylinder er udstyret med et antal X injektorer 2, der er tilsluttet en fælles smøreolieforsyningsledning 31, der har et konstant forsyningstryk, f.eks. i størrelsesordnen 30 - 100 bar. Forsyningstrykket leveres af en hydraulisk pumpe enhed 10, som forsynes fra dagtanken 1000.Figure 1 shows a complete lubrication system for N cylinders 1. Each cylinder is provided with a plurality of X injectors 2 connected to a common lubricating oil supply line 31 having a constant supply pressure, e.g. in the order of 30 - 100 bar. The supply pressure is supplied by a hydraulic pump unit 10, which is supplied from the tank 1000.

1010

Pumpestationen 10 omfatter to pumper 11, to filtre 12 og to kontraventiler 13, som forhindrer, at smøreolien løber tilbage gennem en stillestående pumpe 11. Pumpestationen omfatter tillige to afspærringsventiler 14, der er indskudt i tilførselsledningen således, at filtrene 12 kan renses under drift. De to pumper 11 står stand by for hinan-15 den og starter automatisk op ved faldende olietryk.The pump station 10 comprises two pumps 11, two filters 12 and two check valves 13 which prevent the lubricating oil from flowing back through a stationary pump 11. The pump station also comprises two shut-off valves 14 which are inserted in the supply line so that the filters 12 can be cleaned during operation. The two pumps 11 stand by each other and automatically start up with falling oil pressure.

For enden af forsyningsledningerne 31 er der placeret en trykventil 20 eller en trinløs elektronisk regulerbar trykventil 115 (figuren viser principielt sidstnævnte). Typisk vil trykket i forsyningsledningen være konstant, og her anvendes en almindelig trykventil 20 20, hvor trykket er konstant. Alternativt kan man anvende forsyningstrykket i forsy ningsledningen 31 som en yderligere parameter for systemet, således at man kan anvende forskellige forsyningstryk afhængig af mængderne, der skal doseres, den tid der er til rådighed til levering (f.eks. 3-6 krumtapgrader for at ramme stemplet), viskositetsforhold (olietype og temperatur), og så videre.At the end of the supply lines 31, a pressure valve 20 or an infinitely electronically adjustable pressure valve 115 is placed (the figure shows in principle the latter). Typically, the pressure in the supply line will be constant, and here a common pressure valve 20 20 is used where the pressure is constant. Alternatively, the supply pressure in the supply line 31 can be used as an additional parameter of the system, so that different supply pressures can be used depending on the quantities to be dosed, the time available for delivery (e.g. 3-6 crank degrees to frame piston), viscosity ratio (oil type and temperature), and so on.

2525

Som vist på figur 1 kan trykventilen 20 være en elektronisk styret trykventil med justerbart tryk, der via forbindelsen 505 til den overordnede styring 200 eller eventuel til en cylinder lokal kontrolboks 100. Dette justerbare tryk vil kunne anvendes som en parameter for den doserede smøreoliemængde.As shown in Figure 1, the pressure valve 20 may be an electronically controlled pressure valve with adjustable pressure which via the connection 505 to the overall control 200 or optionally to a cylinder local control box 100. This adjustable pressure can be used as a parameter for the amount of lubricated oil quantity.

Hver cylinder får et forgreningsrør 22, der er tilkoblet hovedforsyningen 31. På forgreningsrøret 22 er der monteret en flowmåleenhed 4, der måler den faktisk tilførte 30 13 DK 177494 B1 mængde smøreolie. Signalet fra flowmåleenheden 4 sendes til en lokal kontrolboks 100, hvor den målte værdi sammenlignes med det forventede flow og afhængig af størrelsen af afvigelsen kan kontrolboksen 100 justere åbnetiden for de enkelte injektorer 2 til den pågældende cylinder.Each cylinder receives a manifold 22 connected to the main supply 31. A manifold unit 4 is mounted on the manifold 22, which measures the amount of lubricating oil actually supplied. The signal from the flow measuring unit 4 is sent to a local control box 100, where the measured value is compared with the expected flow and depending on the size of the deviation, the control box 100 can adjust the opening time of the individual injectors 2 to the relevant cylinder.

5 På hver injektor 2 er der en elektromekanisk ventil med en spole 1014 (se figur 4.1) påmonteret. Ved aktivering af spolen 1014 åbnes injektoren, og smøreolien leveres.5 On each injector 2 an electromechanical valve with a coil 1014 (see Figure 4.1) is mounted. By activating the coil 1014, the injector is opened and the lubricating oil is delivered.

Den leverede mængde smøreolie er proportional med den periode, hvor ventilen holdes åben. Dette forudsætter dog, at trykket i forsyningsledningen er konstant, og til 10 dette formål sidder der en akkumulator 6.The amount of lubricating oil delivered is proportional to the period when the valve is kept open. However, this assumes that the pressure in the supply line is constant and for this purpose there is an accumulator 6.

Til hver cylinder findes en lokal kontrolboks 100, der styrer åbne/lukke-tidspunktet for alle de tilhørende injektorer 2. Ved aktivering af injektoren 2 føres smøreolien fra forsyningsledningen 31 via forgreningsrør 22 igennem flowmåleenheden 4 og via en 15 forgreningsledning 21 til respektive injektorer 2. Flowmåleenheden 4, der direkte eller indirekte måler det passerede flow, er tilsluttet den lokale kontrolboks 100, hvor der foretages en sammenligning af det forventede og faktiske flow, hvorfra eventuelle korrektioner beregnes og ændrer åbnetiden for injektorens spole 1014. I den viste udførsel sidder akkumulatoren 6 i mellem flowmåleenheden 4 og forgreningsstykket 21 20 - for på denne måde at sikre et jævnt flow henover flowmåleenheden 4, hvor trykstød og returløb i smøreolien ellers ville forstyrre flowmålingen.For each cylinder there is a local control box 100 which controls the open / close time of all the associated injectors 2. By activating the injector 2, the lubricating oil is supplied from the supply line 31 via manifold 22 through the flow measuring unit 4 and via a manifold 21 to respective injectors 2. The flow measuring unit 4, which directly or indirectly measures the passed flow, is connected to the local control box 100, where a comparison of the expected and actual flow is made, from which any corrections are calculated and changes the opening time of the injector coil 1014. In the embodiment shown, the accumulator 6 in between the flow measuring unit 4 and the branch piece 21 20 - in this way to ensure a smooth flow across the flow measuring unit 4, where pressure shock and return flow in the lubricating oil would otherwise interfere with the flow measurement.

Alle førnævnte cylinder specifikke kontrolbokse 100 er tilsluttet en hovedkontrolboks 200. Fra denne hovedkontrolboks 200 sendes operationsoplysninger(f.eks. planlagt 25 smøreoliemængde) til alle tilsluttede enheder via signal kabler 550 eller via et netværk. På samme måde modtager hver lokal kontrolboks 100 også oplysninger om svinghjuls position via signal kabl 601 og ud fra driftsdata fra hovedkontrolboksen 200, styres det korrekte åbnetidspunkt, samt den tilhørende åbnetid. I tilfælde af fejl udløser de lokale kontrolboks 100 en alarm, der dels udsendes via signal kabel 650 og 30 via netværk.All of the aforementioned cylinder specific control boxes 100 are connected to a master control box 200. From this master control box 200, operational information (e.g. scheduled 25 lube oil quantity) is sent to all connected devices via signal cables 550 or through a network. Similarly, each local control box 100 also receives information about flywheel position via signal cable 601 and from the operating data of the main control box 200, the correct opening time, and the associated opening time, are controlled. In the event of an error, the local control box 100 triggers an alarm which is partly transmitted via signal cables 650 and 30 via networks.

14 DK 177494 B114 DK 177494 B1

Hovedkontrolboksen 200 får og afgiver information fra skibsmotoren omkring aktuel belastning, feedrate, olietryk og - temperatur og omdrejninger og herud fra beregnes det korrekte aktiveringstidspunkt.The main control box 200 receives and delivers information from the ship's engine about current load, feed rate, oil pressure and temperature and revolutions and from this the correct activation time is calculated.

5 Alternativt til den i figur 1 viste udførelsesform vil det også være muligt at lade den motor centrale hovedkontrolkontrolboks 200 erstatte de lokale cylinder kontrolbokse 100. Det vil kræve, at de cylinder eller injektor specifikke flowmålingssignaler alle sendes til hovedkontrolboksen 200, samt at hovedkontrolboksen 200, herefter direkte styrer alle injektorer. Denne fremgangsmåde vil forenkle styringssystemet, men vil 10 kræve relativ meget kabeltræk. Især på mindre og kompakte motorer kunne denne variant være anvendelig.Alternatively to the embodiment shown in Figure 1, it will also be possible to have the engine central master control box 200 replace the local cylinder control boxes 100. It will require that the cylinder or injector specific flow measurement signals are all sent to the master control box 200, and that the master control box 200, then directly controls all injectors. This approach will simplify the control system but will require relatively much cable pulling. Especially on smaller and compact engines this variant could be applicable.

Endvidere vil denne udførelsesform kræve, at alle svinghjuls referencesignaler (via signal ledning 601) og load/index signaler(via signal ledning 501) leveres direkte til 15 hoved kontrolboksen 200, hvorfra eventuelle alarmsignaler udsendes (via signal ledning 506). I denne udførelsesvariant vil de enkelte injektorers magnet ventiler 1013 blive aktiveret direkte fra hovedkontrolboksen 200 via signal ledninger 120 og styre åbningen og lukningen af magnet ventiler: fælles, individuel eller både og. Alarm signaler genereres direkte af hovedkontrolboksen og sendes via signalledning 650 til 20 skibets alarm system.Furthermore, this embodiment will require all flywheel reference signals (via signal line 601) and load / index signals (via signal line 501) to be delivered directly to the main control box 200 from which any alarm signals are output (via signal line 506). In this embodiment, the solenoid valves 1013 of the individual injectors will be activated directly from the main control box 200 via signal lines 120 and control the opening and closing of solenoid valves: common, individual or both and. Alarm signals are generated directly by the main control box and sent via signal line 650 to the 20 ship's alarm system.

Figurerne 2.1 og 2.2 viser en udførelsesvariant, hvor de cylinder lokale kontrolbokse 100 i stedet integreres i de enkelte injektorer 2, hvilket vil sige, at de cylinder lokale kontrolbokse 100 erstattes af injektor lokale kontrolbokse 101. Dette kan nødvendig-25 gøre, at der anvendes injektor lokale individuelle flowmåleenheder 4.X, dvs. en flow-måleenhed per injektor 2, samt eventuel individuelle akkumulatorer, der ligeledes placeres mellem flowmåleenhedeme 4.X og injektorerne (denne udførsel er ikke vist på tegningerne 2.1 og 2.2, hvor der kun er vist én lokal akkumulator 6 per cylinder).Figures 2.1 and 2.2 show an embodiment variant in which the cylinder local control boxes 100 are instead integrated into the individual injectors 2, i.e., the cylinder local control boxes 100 are replaced by the injector local control boxes 101. This may necessitate the use of injector local individual flow measurement units 4.X, ie. a flow measurement unit per injector 2, and any individual accumulators also placed between the flow measuring units 4.X and the injectors (this embodiment is not shown in drawings 2.1 and 2.2, where only one local accumulator 6 is shown per cylinder).

30 De her viste udførelsesformer er identisk med systemet beskrevet på figur 1, dvs. at der fortsat bruges hovedkontrolboksen 200. Hovedkontrolboksen 200 behandler nu blot signalerne fra de individuelle injektorer og ikke længere de cylindervise signaler.The embodiments shown here are identical to the system described in Figure 1, ie. that the main control box 200 is still used. The main control box 200 now only processes the signals from the individual injectors and no longer the cylindrical signals.

15 DK 177494 B1DK 177494 B1

Figur 3 viser en alternativ udførelsesform, hvor alle injektorer aktiveres samtidigt, således at spolerne 1014 (tilhørende pågældende cylinder) aktiveres på en gang via et kabel 120, der serieforbinder alle spolerne 1014 på injektorerne tilhørende samme cylinder. I denne udførelsesform er der en cylinder lokal kontrolboks 100, der styrer 5 alle injektorerne, og hvor der anvendes cylinder lokale flowmåleenheder og eventuelle akkumulatorer. Dette betyder at systemet bliver mere integreret og enkelt.Figure 3 shows an alternate embodiment in which all injectors are activated simultaneously, so that the coils 1014 (associated cylinder) are activated at once via a cable 120 which in series connects all the coils 1014 on the injectors belonging to the same cylinder. In this embodiment, there is a cylinder local control box 100 which controls all the injectors and where cylinder local flow measurement units and any accumulators are used. This means that the system becomes more integrated and simple.

En mulig alternativ udførelsesform kunne være, at man i stedet for den i figur 3 nævnte cylinder lokale kontrolboks 100 lader én injektor lokal kontrolboks styre resten af 10 injektorerne ud fra en cylinder lokal flow målinger. Som nævnt i forbindelse med figur 2.1 og 2.2 vil denne variant betyde, at én cylinder lokal kontrolboks erstattes af én injektor lokal kontrolboks. En sådan udføreis es form vil være den absolut enkleste med et minimum af kabler, flowmetre, og så videre.A possible alternative embodiment could be that instead of the cylinder local control box 100 mentioned in Figure 3, one injector local control box lets the rest of the 10 injectors be controlled from a cylinder local flow measurements. As mentioned in connection with Figures 2.1 and 2.2, this variant will mean that one cylinder local control box is replaced by one injector local control box. Such a design is the simplest with a minimum of cables, flow meters, and so on.

15 Principielt kunne man også have f.eks. to eller flere injektor lokale kontrolbokse, der hver uafhængig af de andre kan styre alle injektorerne til en cylinder. Kombineres dette med en overvågningsfunktion i den aktive injektor lokale kontrolboks 101 vil man kunne opbygge et redundant system, hvor man f.eks. via en relæ adgang og et kabel fortæller den efterfølgende injektor, at den skal tage over grundet fejl i en fore-20 gående injektor. Endelig kunne man få den injektor lokale kontrolboks til at udløse en alarm, når den fejler, samtidig med at den foregående injektor fejlede.In principle, one could also have e.g. two or more injector local control boxes, each independent of the others, can control all the injectors for a cylinder. If this is combined with a monitoring function in the active injector local control box 101, you will be able to build a redundant system, where for example. via a relay access and a cable, the subsequent injector tells it to take over due to failure of a previous injector. Finally, one could cause the injector local control box to sound an alarm when it failed, while the previous injector failed.

Figur 4 viser en injektor, som kan anvendes i et system af ovennævnte type. På figuren er der vist at hver cylinder 1 har et antal injektorer 2 (4 stk. er vist på tegningen 25 per cylinder). Tryksat olie tilføres igennem forgreningsrøret 21 til injektoren 2 gennem tilførselskanal 20100.Figure 4 shows an injector which can be used in a system of the above type. The figure shows that each cylinder 1 has a number of injectors 2 (4 are shown in the drawing 25 per cylinder). Pressurized oil is supplied through the manifold 21 to the injector 2 through the supply channel 20100.

Den i figur 4 og 5 viste injektor omfatter en dyse 1001, hvor dysen 1001 via et udvendigt gevind er monteret i et indvendigt ventilhus 1006. Selve ventilhuset 1006 har en 30 flange, der delvis hviler ovenpå selve injektorhuset 1017 og delvis ovenpå en sammenspændingsflange 1007. Injektorhuset 1017 sidder monteret udvendigt på samlingen af dyse 1001 og ventilhus 1006, og hvor injektorhuset 1017 sidder monteret i en flange, f.eks. ved en prespasning. Det indvendige ventilhus 1006 består øverst af en 16 DK 177494 B1 flange med et O-ringsspor og en efterfølgende neddrejning, der gør, at ventilhuset 1006 fortsætter ” et stykke” op i spole keme/ankerhuset 1009. O-ringen 1008 sikre, at det tryksatte olie forbliver indenfor ventilhus 1006 og spole keme/ankerhus 1009. Omkring spole keme/ankerhus 1009 sidder en hovedflange 1010, der via skruer 1011 5 sammenspænder injektorhus med dyse, spole keme/ankerhus 1009 og sammenspændingsflange 1007. Samlingen af dysen/ventilhus 1001/1006 sidder i selve injektorhuset, og ved hjælp af en O-ring 1002 sikres, at der ikke kommer smuds og olierester længere oppe i injektorhuset 1017.The injector shown in Figures 4 and 5 comprises a nozzle 1001 in which the nozzle 1001 is mounted via an external thread in an internal valve housing 1006. The valve housing 1006 has a flange 30 which rests partly on top of the injector housing 1017 and partly on top of a clamping flange 1007. The injector housing 1017 is mounted externally to the assembly of nozzle 1001 and valve housing 1006, and wherein the injector housing 1017 is mounted in a flange, e.g. by a press fit. The inner valve housing 1006 consists at the top of a 16 DK 177494 B1 flange with an O-ring groove and a subsequent turning, which causes the valve housing 1006 to continue "one way" into the coil core / anchor housing 1009. The O-ring 1008 ensures that it pressurized oil remains within valve housing 1006 and coil core / anchor housing 1009. Around coil core / anchor housing 1009 sits a main flange 1010 which, via screws 1011 5, compresses injector housing with nozzle, coil core / anchor housing 1009 and compression flange 1007. The nozzle / valve housing assembly 1001 / 1006 is located in the injector housing itself, and with the aid of an O-ring 1002, it is ensured that no dirt and oil residues come up anymore in the injector housing 1017.

10 I selve spole keme/ankerhus 1009 sidder et anker/stempel 1012 med et indvendigt gevind, hvor ventillegemet 1003 er monteret, og hvor gevindsamlingen sikres ved en pinol-skrue 1013. I ankeret 1012 er der nogle kanaler 1023 til at lede den tryksatte olie videre i retning mod dysen. Den mulige vandring af ventillegeme/anker 1003/1012 er givet ved hulrummet 20200.10 In the coil core / anchor housing 1009 is an anchor / piston 1012 with an internal thread where the valve body 1003 is mounted and where the thread assembly is secured by a pin screw 1013. In the anchor 1012 there are some channels 1023 to guide the pressurized oil further towards the nozzle. The possible migration of valve body / anchor 1003/1012 is given at cavity 20200.

15 I injektoren 2 føres olien videre igennem injektoren via hulrummet 20200 og gennem kanalen 1023. Herefter fortsætter olien ud i hulrummet 1022 og gennem kanalen 1021 til hulrummet 1020, hvorfra olien føres frem via spalten 1030 til hulrummet omkring kugleventilsædet 1019. Spalten er dannet mellem ventillegemets stamme 1003 og 20 væggen 1031 i den boring, hvori ventillegemets stamme er optaget.In the injector 2, the oil is passed through the injector via the cavity 20200 and through the duct 1023. Thereafter, the oil continues into the cavity 1022 and through the duct 1021 to the cavity 1020, from which the oil is advanced through the gap 1030 to the cavity around the ball valve seat 1019. The gap is formed between the valve body. stem 1003 and wall 1031 in the bore into which the body of the valve body is received.

Når spolen 1014 aktiveres, flyttes ventillegemet 1003 i retning mod spolen 1014, indtil hulrummet 20200 er udfyldt af anker/stemplet 1012. Når ventillegemet 1003 med integreret kugle 1016 løftes fri af kuglesædet 1019, sendes tryksat olie igennem ven- 25 tilsædet 1019 via kanalen 1018 ud gennem dyseåbningen 1040. Når det elektriske signal igennem ledning (120) fra kontrol boksen 100 til injektorens spole 1013 slukkes, sikrer fjederen 1005, at injektoren 2/kuglesæde 1019 lukkes ved at presse ventillegemet 1003 og anker/stempel 1012 i retning mod kuglesædet 1019.When the coil 1014 is actuated, the valve body 1003 is moved in the direction of the coil 1014 until the cavity 20200 is filled by the anchor / piston 1012. When the valve body 1003 with integral ball 1016 is lifted free of the ball seat 1019, pressurized oil is sent through the valve seat 1019 via the channel 1018 out of the nozzle opening 1040. When the electrical signal through line (120) from control box 100 to injector coil 1013 is extinguished, spring 1005 ensures that injector 2 / ball seat 1019 is closed by pressing valve body 1003 and anchor / piston 1012 in direction of ball seat 1019 .

30 Den i figur 4 viste fjeder 1005 sikrer, at ventilen lukkes, når spolen 1013 slukkes. I figur 4 er der vist, at fjederkraften kan justeres ved at justere sammenpresningen af fjederen ved hjælp af en indstilling af positionen for møtrikken 1004.1 praksis vil den nødvendige fjederkraft til at give en tilfredsstillende hurtig lukning af ventilen kunne 17 DK 177494 B1 bestemmes ved empiriske forsøg, da der skal findes et kompromis mellem spolekraft og fjeder kraft og herefter vil sammenpresningen af fjederen være konstant og ’’møtrikken” integreres i ventillegemet i form af et anlæg/bryst, hvor fjederen ligger an.The spring 1005 shown in Figure 4 ensures that the valve closes when the coil 1013 is extinguished. In Figure 4, it is shown that the spring force can be adjusted by adjusting the compression of the spring by adjusting the position of the nut 1004.1 in practice, the required spring force to provide a satisfactory fast closing of the valve can be determined by empirical tests. as a compromise between coil force and spring force must be found and then the compression of the spring will be constant and the '' nut 'will be integrated into the valve body in the form of a plant / chest where the spring rests.

5 Når kuglesædet 1019 er lukket igen vil den tryksatte olie i tilførselskanal 20100/20200 virke på ventillegeme 1003 således, at fjeder 1005 og olietrykket begge holder injektorens kuglesæde 1019 lukket.When the ball seat 1019 is closed again, the pressurized oil in supply channel 20100/20200 acts on valve body 1003 such that spring 1005 and the oil pressure both keep the injector ball seat 1019 closed.

Injektorens ventil funktionen udføres af et kugleventillegeme således som vist på fig.The injector valve function is performed by a ball valve body as shown in FIG.

10 4. Der er mulighed for at anvende injektorer, der sprayer og/eller danner stråler af olie samt anvende injektorer med 1 eller flere dyseåbninger 1040.10 4. It is possible to use injectors that spray and / or generate jets of oil and to use injectors with 1 or more nozzle openings 1040.

Injektoren styrer med et elektrisk signal 120, dette muliggør en fri og uafhængig styring af, hvornår injektoren/ventilen skal åbne og lukke og dermed åbningstiden.The injector controls with an electrical signal 120, this enables a free and independent control of when the injector / valve should open and close and thus the opening time.

1515

Figur 5 viser principielt et system, der funktionsmæssigt svarer til systemet i figur 4.Figure 5 shows in principle a system that functionally corresponds to the system in Figure 4.

Dog med en alternativ udførelsesform for en injektor, hvor der er mulighed for at lave trykmålinger eller prøver på eventuelle smøreolierester fra cylinderen igennem et udtag 20000 på siden af flangen. Injektoren har udvendigt på dyse/ventilhus 1001/1006 20 en spalte i forhold til injektor huset 1017, og igennem denne spalte er der forbindelse til udtaget 20000.However, with an alternate embodiment of an injector, where it is possible to make pressure measurements or tests on any lubricating oil residues from the cylinder through an outlet 20000 on the side of the flange. The injector exterior of the nozzle / valve housing 1001/1006 20 has a gap with respect to the injector housing 1017, and through this gap there is a connection to the outlet 20000.

Claims

18 DK 177494 B1

1. Injector (2) for use in a cylinder lubrication oil dosing system for large cylinders (1) in a diesel engine, for example in marine engines, the dosing system comprising - a lubricating oil supply which may be a pump station or an accumulator; lubricating oil supply, - a control unit (100,200), wherein the injector (2) has - an inlet for connection to the supply line (31), - an open / close valve unit, the open / close valve comprises a valve body with a stem and a cooperating valve seat, and 10. a or more nozzle openings (1040) for injecting cylinder lubricating oil into an associated cylinder (1), wherein - the control unit (200,100) controls each open / close valve assembly, characterized in that the injector (2) comprises a ball valve body (1003) and between the stem of the ball valve assembly (1003) and the wall of the open / close valve control valve is a slot (1030) 15 having a width greater than 10 μτη.

Injector (2) according to claim 1, characterized in that the valve seat is tapered.

Injector (2) according to claim 1 or 2, characterized in that the area of the gap (1030) is at least 20 equal to the total area of the nozzle opening (s) (1040) of the injector (2).

Injector (2) according to claim 1, 2 or 3, characterized in that the injector (2) comprises a filter and the gap (1030) of the open / close valve gap has at least the same width corresponding to half the filter mesh size. 25

An injector (2) according to any one of the preceding claims, characterized in that it comprises an electromechanical actuator, preferably in the form of a solenoid valve or a piezoelectric element.

Injector (2) according to any one of the preceding claims, characterized in that it has an outlet (20000) for connection with a return line for discharging excess oil or for performing pressure measurements. 19 DK 177494 B1

An injector (2) according to any one of the preceding claims, characterized in that the injector (2) comprises a flow sight glass or a flow switch for visually or electronically indicating an actual flow.

An injector (2) according to any one of the preceding claims, characterized in that it is adapted to operate at a supply pressure between 30 and 100 bar.

An injector (2) according to any one of the preceding claims, characterized in that it is adapted to work with compact jet (s). 10

An injector (2) according to any one of the preceding claims, characterized in that it is adapted to work with atomized spray (s).

Injector (2) according to any one of the preceding claims, characterized in that the gap width (1030) between the stem of the valve body and a bore in which the stem is accommodated at least has half the size of cross-sectional dimensions for a nozzle opening (1040).