DK146453B - BENEFIT BENEFITS FOR A Piston Incinerator's Start Air Valves - Google Patents
BENEFIT BENEFITS FOR A Piston Incinerator's Start Air Valves Download PDFInfo
- Publication number
- DK146453B DK146453B DK391481A DK391481A DK146453B DK 146453 B DK146453 B DK 146453B DK 391481 A DK391481 A DK 391481A DK 391481 A DK391481 A DK 391481A DK 146453 B DK146453 B DK 146453B
- Authority
- DK
- Denmark
- Prior art keywords
- opening
- disc
- distributor
- chamber
- air
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N9/00—Starting of engines by supplying auxiliary pressure fluid to their working chambers
- F02N9/04—Starting of engines by supplying auxiliary pressure fluid to their working chambers the pressure fluid being generated otherwise, e.g. by compressing air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/04—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for starting by means of fluid pressure
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Exhaust Gas After Treatment (AREA)
- Valve Device For Special Equipments (AREA)
Description
146453 i146453 i
Opfindelsen angår en fordeler for styreluft til åbning af starteluftventiler i en stempelforbrændings-motor, omfattende et hus og en i huset drejeligt lejret aksel, hvortil der er fastgjort en fordelerskive, 5 som er beliggende i et i huset udformet kammer, hvis ene endeflade har en række åbninger fordelt langs en med akslens drejningsakse koncentrisk cirkel og indrettet til at sluttes til hver sin starteluftventil, hvilken fordelerskive har en mod kammerets nævnte ende-10 flade vendende anlægsflade med en bueformet forsynings-rille og en bueformet aflastningsrille, der begge flugter i omkredsretningen med åbningerne i kammerets endeflade og gennem kanaler i skiven er i forbindelse med hver sin åbning henholdsvis i skivens modstående 15 yderflade og i dens anlægsflade, hvilken sidstnævnte åbning står i permanent forbindelse med omgivelserne, samt en tilgangsåbning for styreluft under tryk til kammeret uden for fordelerskivens yderflade. En styre-luftfordeler af denne art er kendt fra ansøgernes egen 20 motorproduktion og er kort beskrevet i Christen Knak, "Diesel Motor Ships, Engines And Machinery", 1979, G.E.C. Gad Publishers, København, side 350-353. Antallet af åbninger i kammerets endeflade svarer til antallet af motorcylindre, og åbningernes vinkelafstan-25 de er afpasset efter tændingsfølgen i cylindrene. Når motoren skal startes, tilføres styreluft gennem tilgangsåbningen og strømmer derfra gennem forsyningsrillen i fordelerskiven og den eller de åbninger i kammerets endeflade, som står ud for rillen, til de til 30 åbningerne sluttede starteluftventiler, som derved åbnes og giver adgang for starteluften til de pågældende cylindre, medens de Øvrige starteluftventiler foreløbig forbliver lukket. Motoren går nu i gang og driver fordelerskiven synkront med én omdrejning for hver fuld 35 arbejdscyklus, eksempelvis to krumtapomdrejninger ved 2 146453 en firetaktsmotor. I takt hermed åbnes og lukkes hver starteluftventil, når henholdsvis forsyningsrillen og aflastningsrillen i fordelerskiven kommer ud for den tilhørende åbning i kammerets endevæg.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a control air distributor for opening of starting air valves in a piston combustion engine, comprising a housing and a rotatable shaft mounted in the housing, to which is attached a distribution disc 5 located in a chamber formed in the housing, one end of which has a a series of apertures distributed along a concentric circle with the axis of rotation of the shaft and arranged to be connected to each of its starting air valves, said distributor disk having a abutment face facing said end 10 with an arcuate supply groove and an arcuate relief groove, both aligned in the circumferential direction the openings in the end surface of the chamber and through channels in the disc are in connection with each opening respectively in the outer surface of the disc and in its abutment surface, the latter opening being permanently in communication with the surroundings, and an inlet opening for controlled air to the chamber outside the outer surface of the distributor disc . A steering-air distributor of this kind is known from the applicant's own 20 engine production and is briefly described in Christen Knak, "Diesel Motor Ships, Engines And Machinery", 1979, G.E.C. Gad Publishers, Copenhagen, pages 350-353. The number of openings in the end surface of the chamber corresponds to the number of engine cylinders and the angular distances of the openings are adjusted to the ignition order in the cylinders. When the engine is to be started, control air is supplied through the inlet opening and flows from there through the supply groove in the distributor disc and the openings in the end surface of the chamber facing the groove to the starting air valves connected to the 30 openings which thereby open and allow access to the starting air for the respective cylinders, while the other starting air valves remain closed for the time being. The engine now starts and operates the distributor disk synchronously with one revolution for each full 35 duty cycle, for example two crankshafts at 2 146453 a four stroke engine. In step with this, each starting air valve is opened and closed as the supply groove and the relief groove in the distributor disc respectively reach the corresponding opening in the end wall of the chamber.
5 En ulempe ved den kendte fordeler er, at afbry delsen af styrelufttilførslen til fordeleren medfører en trykaflastning af de starteluftventiler, som på dette tidspunkt er sluttet til fordelerskivens forsyningsrille og derfor står åbne, hvilket resulterer i 10 lukning af disse ventiler. Som følge heraf falder det drejningsmoment, som starteluften udøver på krumtapakslen, og motoren taber omdrejninger. Denne ulempe er særlig fremtrædende ved motorer, hvor der først åbnes for brændstoftilførslen, når lufttilførslen til 15 fordeleren er afbrudt, og især ved omstyrbare motorer, der skal omstyres under belastning, f.eks. skibsmotorer, hvor vandets tryk mod skruen udøver et drejningsmoment, der søger at fastholde den oprindelige drejningsretning og således modvirker den ønskede ændring 20 af omdrejningsretningen.A disadvantage of the known distributor is that the interruption of the control air supply to the distributor causes a pressure relief of the starting air valves which are at this time connected to the distributor disc supply groove and therefore open, which results in the closing of these valves. As a result, the torque exerted by the starting air on the crankshaft decreases and the engine loses turns. This disadvantage is particularly evident in engines which only open the fuel supply when the air supply to the distributor is switched off, and especially in controllable motors that must be re-controlled under load, e.g. ship engines, where the pressure of the water against the screw exerts a torque which seeks to maintain the original direction of rotation and thus counteracts the desired change of direction of rotation.
Med henblik på at afhjælpe den påpegede ulempe er styreluftfordeleren ifølge opfindelsen ejendommelig ved, at der på en i kammeret indragende ende af akslen er monteret en lukkeskive, som er aksialt for-25 skydelig mellem en virksom stilling, hvori lukkeskiven ligger tæt an mod fordelerskivens yderflade i det mindre omkring åbningen i denne flade og derved lukker -denne åbning, og en uvirksom stilling, hvori der er en spalte mellem de to skiver, at der findes aktive-30 ringsmidler til at presse lukkeskiven til dens virksomme stilling og fastholde skiven i denne stilling, samt at lufttilgangsåbningen til kammeret er placeret i dettes sidevæg ud for spalten mellem de to skiver.In order to alleviate the drawback pointed out, the control air distributor according to the invention is characterized in that a closing disc is mounted on an end of the shaft which is axially displaceable between an effective position in which the closing disc is close to the outer surface of the distributor disc. at least around the aperture of this surface, thereby closing this aperture, and an inactive position wherein there is a gap between the two discs, that actuators are provided to push the closure disc to its operative position and retain the disc therein. position, and that the air inlet opening to the chamber is located in its sidewall next to the gap between the two washers.
Under hovedparten af et startforløb fungerer 35 fordeleren på samme måde som den ovenfor beskrevne, idet 3 U6453 den indstrømmende styreluft holder lukkeskiven presset bort fra fordelerskiven, dvs. i uvirksom stilling.During the majority of a start-up course, the distributor operates in the same manner as the one described above, with the flowing control air keeping the closing disc pressed away from the distributor disk, ie. in idle position.
I det øjeblik da styrelufttilførslen afbrydes, vil de på lukkeskiven virkende aktiveringsmidler forskyde ski-5 ven til virksom stilling, i hvilken den ved sit anlæg mod fordelerskiven afspærrer den eller de strømningspassager, som er åbne mellem kammeret og den eller de i dette øjeblik åbne starteluftventiler. Som følge heraf opretholdes overtrykket i de pågældende passager 10 indtil det tidspunkt da passagerne ved fordelerskivens rotation afluftes gennem aflastningsrillen, og tilsvarende bliver den eller de tilsluttede starteluftventiler stående åbne, således at starteluftens drejningsmoment på krumtapakslen opretholdes i tilsvarende læn-15 gere tid. Man undgår herved, at motorens omdrejningstal falder, inden krumtapakslens fortsatte rotation er sikret ved tilførsel og tænding af brændstof i cylindrene. Da lukkeskiven samtidig hindrer, at der under den fortsatte rotation af fordelerskiven kan strøm-20 me styreluft til flere starteluftventiler end den eller de allerede åbne, foreligger der ingen risiko for, at der kan tilføres både starteluft og brændstof til samme motorcylinder.As soon as the control air supply is interrupted, the actuating means acting on the closing disc will displace the disk to the operative position, in which, at its abutment against the distributor disc, it blocks the flow passage (s) open between the chamber and the starting air valve (s) currently open. . As a result, the overpressure in the respective passages 10 is maintained until the passages of the distributor disk are vented through the relief groove, and correspondingly the connected starter air valve (s) remain open, so that the starting air torque of the crankshaft is maintained for a corresponding longer time. This avoids the engine rpm decreasing before the continued rotation of the crankshaft is ensured by the supply and ignition of fuel in the cylinders. Since at the same time, the closing washer prevents the control air from flowing to more starting air valves than the one or those already open during the continuous rotation of the distributor disc, there is no risk that both starting air and fuel can be supplied to the same engine cylinder.
I en foretrukket udføreIsesform omfatter aktive-25 ringsmidlerne for lukkeskiven en sekundær tilgangsåbning for trykluft til rummet på den fra fordelerskiven bortvendende yderside af lukkeskiven. Begge tilgangsåbninger kan fødes fra samme trykluftkilde og på enkel måde styres af en fælles ventil eller af to 30 koordinerede ventiler, således at der åbnes for luften, som påvirker lukkeskiven til virksom stilling, samtidig med eller eventuelt umiddelbart før der lukkes for den primære lufttilgangsåbning.In a preferred embodiment, the closing means activating means comprise a secondary compressed air access opening to the space on the outer face of the closing disc facing away from the distributor disk. Both inlet openings can be fed from the same source of compressed air and easily controlled by a common valve or by two 30 coordinated valves, thus opening to the air affecting the closing disk to the operative position, simultaneously or possibly immediately before closing the primary air inlet opening.
Udførelsesformen kan yderligere udbygges ved, 4 146453 at lukkeskiven sammen med kammerets sidevæg danner en rundtgående drøvlespalte mellem de to sider af skiven, og at der fra rummet på lukkeskivens yderside udgår en snæver afluftningsboring. Under den del af startforlø-5 bet, hvor den sekundære lufttilgangsåbning er spærret, indstiller der sig i rummet uden for lukkeskiven et vist overtryk, som er lavere end det mellem skiverne virkende tryk, der holder lukkeskiven i uvirksom stilling, men som ved sin påvirkning på akselenden medio virker til at holde fordelerskiven i anlæg mod husets modstående endeflade.The embodiment can be further expanded by forming the closing disc together with the side wall of the chamber a circular throttle gap between the two sides of the disc and leaving a narrow vent bore from the space on the outside of the closing disc. During the part of the start-up course where the secondary air inlet opening is blocked, a certain excess pressure, which is lower than the pressure acting between the discs, keeps the closing disc in idle position, but which by its effect, is set in the space outside the closing disc. on the shaft end mid works to hold the distributor disk against the opposite end surface of the housing.
Kanterne af de mod hinanden vendende flader af fordelerskiven og lukkeskiven kan have skrå afskæringer, som tilsammen danner en rundtgående indstrømnings-15 passage med kileformet tværsnit til spalten mellem skiverne. Når der åbnes for den primære lufttilgang, vil den indstrømmende luft da udøve en dynamisk kraftpåvirkning på de to skiver, som, selv i de tilfælde at skiverne ligger tæt mod hinanden, sikrer, at lukke-20 skiven straks forskydes til sin uvirksomme stilling.The edges of the facing faces of the distributor disk and the closure disk may have oblique cuts which together form a circular inflow passage with wedge-shaped cross-section to the gap between the discs. When opened to the primary air supply, the inflowing air will then exert a dynamic force on the two discs, which, even in the case of the discs being close to each other, ensures that the closing disc is immediately displaced to its inoperative position.
Opfindelsen forklares i det følgende nærmere under henvisning til tegningen, på hvilken fig. 1 er et aksialt snit gennem en udførelsesform for fordeleren ifølge opfindelsen, 25 fig. 2 et planbillede i større skala af den mod fordelerskiven vendende endeflade af fordelerhuset, fig. 3 et planbillede i samme skala af fordelerskivens anlægsflade mod husets endeflade, 30 fig. 4 et planbillede af fordelerskivens mod stående yderflade, svarende til den brudte snitlinie IV-IV i fig. 1, og fig. 5 et snit efter linien V-V i fig. 4.The invention will now be explained in more detail with reference to the drawing, in which: FIG. 1 is an axial section through an embodiment of the distributor according to the invention; FIG. 2 is a larger-scale plan view of the end face of the distributor housing facing the distributor disk; FIG. 3 is a plan view on the same scale of the distribution surface of the distributor disk against the end surface of the housing; FIG. 4 is a plan view of the distributor disc facing the upright surface, corresponding to the broken section line IV-IV of FIG. 1, and FIG. 5 is a section along the line V-V in FIG. 4th
146453 5146453 5
Den på tegningen anskueliggjorte styreluftfordeler har et hus 1, hvori der er indpresset en lejebøsning 2 for en aksel 3. På sin fra huset udragende ende bærer akslen et tandhjul 4, som drives fra den 5 ikke viste forbrændingsmotors krumtap- eller knastaksel på en sådan måde, at akslen 3 udfører en fuld omdrejning for hver komplet arbejdscyklus i en motorcylinder.The control air distributor illustrated in the drawing has a housing 1 in which a bearing bush 2 is pressed for a shaft 3. At its end projecting from the housing a shaft 4 driven from the crankshaft or camshaft of the combustion engine (not shown) in such a way. the shaft 3 performs one full revolution for each complete duty cycle of a motor cylinder.
I huset l's modsatte ende, der er lukket med 10 et dæksel 5, er der udformet et generelt med 6 betegnet kammer, og i kammeret 6 er der til akslen 3 fastgjort en fordelerskive 7, som er aksialt fik-seret ved hjælp af en afstandsbøsning 8 og en møtrik 9. Fordelerskiven 7 har en plan anlægsflade 10, som 15 vender mod en plan endeflade 11 af huset 1, og som under et startforløb holdes i tætsluttende anlæg mod fladen 11.In the opposite end of the housing 1, which is closed with 10 a cover 5, a chamber 6 generally designated 6 is formed, and in the chamber 6 is attached to the shaft 3 a distribution disc 7, which is axially fixed by means of a spacer sleeve. 8 and a nut 9. The distributor disc 7 has a flat abutment surface 10, which 15 faces a flat end surface 11 of the housing 1, and which during a start course is kept in tightly sealing abutment against the surface 11.
I endefladen 11 er der to rækker åbninger, henholdsvis 12 og 13 fordelt med lige store vinkel-20 afstande langs hver sin med akslen 3's centerlinie koncentriske delecirkel. I den viste udførelsesform er der seks åbninger i hver række, idet den ikke viste forbrændingsmotor er en omstyrbar sekscylindret motor med en starteluftventil til hver cylinder. Hver åbning 25 12 danner mundingen af en boring 14 i huset, og fra bunden af hver boring udgår en radial tilslutningsåbning 15 for en ikke vist ledning til en omstyringsventil.In the end surface 11, there are two rows of openings, 12 and 13, respectively, spaced at equal angles-20 distances along each with the concentric dividing circle of the shaft 3. In the illustrated embodiment, there are six openings in each row, the combustion engine not shown being a reversible six-cylinder engine with a starter air valve for each cylinder. Each opening 25 12 forms the mouth of a bore 14 in the housing, and from the bottom of each bore a radial connection opening 15 for a conduit valve not shown is shown.
Tilsvarende boringer 16 forbinder hver åbning 13 med en tilslutningsåbning 17 for en anden ledning til 30 omstyringsventilen.Corresponding bores 16 connect each opening 13 to a connection opening 17 for a different conduit to the control valve.
Hver af de ikke viste starteluftventiler er på kendt måde fjederbelastet til lukning og åbnes mod fjedertrykket, når der fra styreluftfordeleren via den før omtalte omstyringsventil ledes styreluft under tryk 6 146453 til ventilen. I sin ene yderstilling, svarende til at motoren skal startes i omdrejningsretningen frem, tilvejebringer omstyringsventilen strømningsforbindelse fra hver åbning 12 til en tilhørende starteluftven-5 til og i sin modsatte yderstilling slutter omstyringsventilen. hver starteluftventil til den tilhørende åbning 13 i fladen 11.Each of the starter air valves not shown is in a known manner spring-loaded for closure and is opened against the spring pressure when control air is supplied to the valve from the control air distributor via the aforementioned control valve. In its one outer position, corresponding to the motor being started in the direction of rotation, the bypass valve provides flow connection from each opening 12 to a corresponding starting air valve to and in its opposite outer position the bypass valve ends. each starting air valve to the associated opening 13 in the surface 11.
I fordelerskiven 7's anlægsflade er der to cirkelbueformede forsyningsriller 18 og en cirkelbue-10 formet aflastningsrille 19, alle tre med samme middelradius som radius af åbningerne 12's delecirkel, således at de ved fordelerskivens rotation successivt kommer til at stå ud for hver åbning 12. To andre cirkelbueformede forsyningsriller 20 og en aflast-15 ningsrille 21 samvirker på tilsvarende måde med åbningerne 13.In the abutment surface of the distributor disc 7 there are two circular arc-shaped supply grooves 18 and a circular arc-shaped relief groove 19, all three with the same mean radius as the radius of the dividing circle of the apertures 12, so that, in the rotation of the distributor disc, they face each opening 12 successively. circular arc-shaped supply grooves 20 and a relief groove 21 similarly interact with the openings 13.
Gennem en akseparallel boring 22 i fordelerskiven 7 står hver forsyningsrille 18 og 20 i forbindelse med en åbning 23 i fordelerskivens mod-20 stående yderflade 24. Gennem en akseparallel boring 25 er hver af aflastningsrillerne 19 og 21 sluttet til en fælles radial boring 26 i fordelerskiven. Boringen 26 er lukket ved sin ydre ende og udmunder indefter i en akseparallel boring 27, der udmunder i 25 en åbning 28 i anlægsfladen 10. Som det ses i fig.Through an axis parallel bore 22 in the distributor disk 7, each supply groove 18 and 20 are connected to an opening 23 in the opposite outer surface of the distributor disk 24. Through an axis parallel bore 25, each of the relief grooves 19 and 21 is connected to a common radial bore 26 in the distributor disk. . The bore 26 is closed at its outer end and opens thereafter in an axis parallel bore 27 which opens in 25 an opening 28 in the abutment surface 10. As seen in FIG.
1, ligger åbningen 28 ud for et lille kammer 55 i huset 1, der gennem en boring 29 er permanent afluftet til omgivelserne.1, the opening 28 is adjacent to a small chamber 55 in the housing 1 which is permanently vented through the bore 29 to the surroundings.
Afstandsbøsningen 8 bærer en aksialt forskyde-30 lig lukkeskive 30, som har en ubrudt plan endeflade 31 vendende mod fordelerskiven 7's yderflade 24.The spacer sleeve 8 carries an axially displaceable closure disc 30 having an unbroken planar end face 31 facing the outer face 24 of the distributor disc 7.
Mellem lukkeskiven og dækslet 5 afgrænses i kammeret 6 et rum 32, der kan forsynes med styreluft under tryk gennem en tilgangsåbning 33 i dækslet. En 146453 7 anden tilgangsåbning 34 for styreluft under tryk findes i sidevæggen af kammeret 6 ud for den spalte 35, som findes mellem fordelerskiven 7 og lukkeskiven 30, når sidstnævnte indtager sin i fig. 1 vi-5 ste uvirksomme yderstilling.Between the closure disk and the cover 5, in the chamber 6, a space 32, which can be supplied with controlled air under pressure, is defined through an inlet opening 33 in the cover. A second pressurized control air inlet 34 is located in the side wall of the chamber 6 next to the gap 35 which is located between the distributor disc 7 and the closing disc 30 when the latter occupies its position in FIG. 1 five-fifth inactive outer position.
Som det ses af fig. log 5, er de udvendige kanter af fladerne 24 og 31 skråt afskåret med relativt brede kegleformede flader, henholdsvis 36 og 37, som tilsammen danner en kileformet strømningspas-10 sage for luft fra åbningen 34 til spalten 35.As seen in FIG. log 5, the outer edges of the faces 24 and 31 are obliquely cut with relatively wide cone-shaped faces, 36 and 37, respectively, which together form a wedge-shaped air passage for air from the opening 34 to the slot 35.
yderdiameteren af lukkeskiven 30 er valgt således, at der mellem denne og omkredsen af kammeret 6 dannes en relativt snæver drøvlespalte 38. En snæver afluftningsboring 39 forbinder rummet 32 med 15 omgivelserne.the outer diameter of the closure disc 30 is selected such that a relatively narrow throttle slot 38 is formed between this and the circumference of the chamber 6. A narrow vent bore 39 connects the compartment 32 to the surroundings.
Den beskrevne fordeler fungerer på følgende måde, hvorved det forudsættes, at forbrændingsmotoren skal startes i omdrejningsretningen "frem", således at hver af de seks starteluftventiler gennem omstyrings-20 ventilen er sluttet til den tilhørende åbning 12 i endefladen 11, medens forbindelsen til åbningerne 13 er afspærret.The distributor described operates in the following way, assuming that the internal combustion engine must be started in the "forward" direction, so that each of the six starter air valves through the control valve 20 is connected to the corresponding opening 12 in the end surface 11 while connecting to the openings 13 is blocked off.
Der åbnes for tilgang af styreluft under tryk gennem tilgangsåbningen 34, medens tilgangsåbningen 25 33 er afspærret. Den indstrømmende trykluft presser lukkeskiven 30 til den i fig. 1 viste uvirksomme stilling, hvis skiven ikke allerede indtager denne stilling, og samtidig presses fordelerskiven 7 i tæt anlæg mod husets endeflade 11 af den trykluft, 30 der passerer drøvlespalten 38 ind i rummet 32.Pressure air is accessed under pressure through the inlet port 34, while the inlet port 25 33 is blocked. The inflow of compressed air presses the closing disc 30 to the one shown in FIG. 1, if the disk does not already occupy this position, and at the same time the distributor disk 7 is pressed in close contact with the end surface 11 of the housing by the compressed air 30 passing through the throttle slot 38 into the space 32.
Styreluften strømmer til de to forsyningsriller 18 gennem spalten 35 og de tilhørende boringer 22, og fra forsyningsrillerne fortsætter luften gennem de to åbninger 12, der flugter med hver 35 sin rille 18, til de tilsluttede starteluftventiler. Motoren begynder derved at rotere og driver gennem tandhjulet 4 fordelerskiven 7 rundt, hvorved 8 146453 hver af de seks starteluftventiler successivt får tilført styreluft gennem forsyningsrillerne 18 og derefter afluftes gennem afluftningsrillen 19 og de dertil sluttede boringer 25-29. I rummet 32 5 hersker et tryk, som er lavere end tilgangstrykket i åbningen 34, men dog højere end atmosfæretrykket, og dette tryk holder fordelerskivens anlægsflade 10 i tæt anlæg mod husets endeflade 11.The control air flows to the two supply grooves 18 through the slot 35 and the associated bores 22, and from the supply grooves the air continues through the two openings 12, each with its own groove 18, to the connected starting air valves. The motor then begins to rotate and drives through the sprocket 4 the distributor disc 7, thereby successively supplying control air to each of the six starting air valves through the supply grooves 18 and then venting through the vent groove 19 and the associated bores 25-29. In the space 32 5, a pressure which is lower than the inlet pressure in the opening 34, but higher than the atmospheric pressure, prevails, and this pressure keeps the distribution surface 10 of the distributor disc in close contact with the end surface 11 of the housing.
Den egentlige startperiode afsluttes ved, at 10 tilførslen af trykluft gennem åbningen 34 afbrydes, samtidig med at der tilføres trykluft til rummet 32 gennem åbningen 33. Herved bliver lukkeskiven 30 påvirket af en mod venstre i fig. 1 rettet trykdifferens, som presser dens endeflade 31 tæt mod for-15 delerskivens yderflade 24, og som følge heraf opretholdes det eksisterende overtryk i de to forsyningsriller 18 og dermed i de tilsluttede ledningsforbindelser frem til de to starteluftventiler, der i Øjeblikket står åbne. Gennem de to ventiler fortsætter star-20 teluften derfor med at strømme ind i hver af de to motorcylindre, indtil den tilsvarende åbning 12 ved fordelerskivens rotation kommer til at stå ud for aflastningsrillen 19. Tilførslen af starteluft til cylindrene er sikret ved, at den ikke viste hovedven-25 til, som forsyner ventilerne med starteluft, først lukkes efter en forud valgt periode, normalt ca. 6 til 8 s, efter afbrydelsen af lufttilførslen til åbningen 34. Lufttilførslen til åbningen 33 opretholdes hensigtsmæssigt i samme periode.The actual starting period is terminated by interrupting the supply of compressed air through the opening 34, while at the same time supplying compressed air to the space 32 through the opening 33. This causes the closing disc 30 to be influenced by a left-hand side in FIG. 1, a pressure differential is directed which presses its end surface 31 close to the outer surface 24 of the distributor disk, and as a result, the existing overpressure is maintained in the two supply grooves 18 and thus in the connected conduits up to the two starting air valves currently open. Therefore, through the two valves, the star 20 air air continues to flow into each of the two engine cylinders until the corresponding opening 12, at the rotation of the distributor disk, faces the relief groove 19. The supply of starting air to the cylinders is ensured by the fact that it does not The main valve 25, which supplies the valves with starting air, is only closed after a preselected period, usually approx. 6 to 8 s, after the interruption of the air supply to the opening 34. The air supply to the opening 33 is suitably maintained for the same period.
30 Som det ses i fig. 1, udgøres akslen 3's un derstøtning i lejebøsningen 2 af to lejesøler 40 og 41 med forskellig diameter. Diameterforskellen sikrer, at smøreolie, som under tryk tilføres til hul- 146453 9 rummet 42 i huset og fra dette gennem en åbning 43 i lejebøsningen 2 til de to lejesøler, forskyder akslen 3 et lille stykke mod højre under motorens normale drift, hvor tilførslen af trykluft til fordeleren 5 er afbrudt. Herved sikres, at fordelerskiven ikke glider mod husets anlægsflade 11 og derved slides unødigt.30 As seen in FIG. 1, the shaft 3's support in the bearing bush 2 is made up of two bearing columns 40 and 41 of different diameters. The diameter difference ensures that lubricating oil which is applied under pressure to the hollow space 42 in the housing and from this through an opening 43 in the bearing sleeve 2 to the two bearing columns, shaft 3 moves a little to the right during normal engine operation, where the supply of compressed air for the distributor 5 is switched off. This ensures that the distributor disk does not slip against the abutment surface 11 of the housing and thereby unnecessarily wear.
Claims (2)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK391481A DK146453C (en) | 1981-09-04 | 1981-09-04 | BENEFIT BENEFITS FOR A Piston Incinerator's Start Air Valves |
| JP14175682A JPS5847111A (en) | 1981-09-04 | 1982-08-17 | Device for forwarding and distributing pressure air for control |
| FR8214784A FR2512501B1 (en) | 1981-09-04 | 1982-08-30 | DISTRIBUTOR FOR DELIVERING CONTROL AIR TO STARTING AIR VALVES OF AN INTERNAL COMBUSTION ENGINE |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK391481 | 1981-09-04 | ||
| DK391481A DK146453C (en) | 1981-09-04 | 1981-09-04 | BENEFIT BENEFITS FOR A Piston Incinerator's Start Air Valves |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK391481A DK391481A (en) | 1983-03-05 |
| DK146453B true DK146453B (en) | 1983-10-10 |
| DK146453C DK146453C (en) | 1984-03-19 |
Family
ID=8128181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK391481A DK146453C (en) | 1981-09-04 | 1981-09-04 | BENEFIT BENEFITS FOR A Piston Incinerator's Start Air Valves |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS5847111A (en) |
| DK (1) | DK146453C (en) |
| FR (1) | FR2512501B1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0758966B2 (en) * | 1985-09-25 | 1995-06-21 | 株式会社日立製作所 | Loop data transmission method |
| CN107709724B (en) * | 2015-06-03 | 2020-09-08 | 瓦锡兰芬兰有限公司 | Internal combustion piston engine, method for starting an internal combustion piston engine and control unit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1762206A (en) * | 1928-02-10 | 1930-06-10 | Winton Engine Company | Air starter timing means |
| FR2200901A5 (en) * | 1972-09-26 | 1974-04-19 | Semt | |
| DE2548615C2 (en) * | 1975-10-30 | 1982-06-03 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg | Device for controlling a starter and brake valve on a reversible internal combustion engine that can be actuated by fluid pressure, in particular pneumatic pressure |
-
1981
- 1981-09-04 DK DK391481A patent/DK146453C/en not_active IP Right Cessation
-
1982
- 1982-08-17 JP JP14175682A patent/JPS5847111A/en active Granted
- 1982-08-30 FR FR8214784A patent/FR2512501B1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0257228B2 (en) | 1990-12-04 |
| DK391481A (en) | 1983-03-05 |
| FR2512501B1 (en) | 1984-12-28 |
| JPS5847111A (en) | 1983-03-18 |
| FR2512501A1 (en) | 1983-03-11 |
| DK146453C (en) | 1984-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| SU751335A3 (en) | Method and device for diesel braking and reversing | |
| US5636609A (en) | Variable cylinder-operation controlled internal combustion engine | |
| US4502425A (en) | Variable lift cam follower | |
| US4226216A (en) | Method of quick pneumatic braking of a diesel engine | |
| EP0721056B1 (en) | Rotary hydraulic valve control of an electrohydraulic camless valvetrain | |
| US5363816A (en) | Valve drive device | |
| ES2019411B3 (en) | MOTOR VALVE WITH HYDRAULIC TRANSMISSION AND VARIABLE FEATURES THROUGH CONTROL LEVERS. | |
| NO160836B (en) | PROCEDURE FOR THE MANUFACTURE OF A MULTIPLE LAYER COVER PLATE WITH SL ING. | |
| US2965087A (en) | Fuel injection pump | |
| JPH04287816A (en) | Engine damping device for multicylinder internal combusion engine | |
| EP0536513A1 (en) | Valve operating system for internal combustion engine | |
| JP2007023953A (en) | Valve timing adjustment device | |
| DK146453B (en) | BENEFIT BENEFITS FOR A Piston Incinerator's Start Air Valves | |
| US5343834A (en) | Device for adjusting the rotational angle relationship between a camshaft and its drive element | |
| US7415952B2 (en) | Valve timing control device | |
| US4481919A (en) | Intake/exhaust valve assembly for an internal combustion engine | |
| US5320082A (en) | Valve-moving apparatus for internal combustion engine | |
| US10612433B2 (en) | Camless engine design | |
| US20220178280A1 (en) | Mechanically timed cylinder deactivation system | |
| SU1558306A3 (en) | Control air valve distributor unit for reversible piston-type ic-engine | |
| US11162436B2 (en) | Camless engine valve control system | |
| US4694787A (en) | Automatic fluid distributing valve timing device | |
| JPH07139327A (en) | Cam shaft in engine with valve timing controller | |
| SU1123553A3 (en) | Camshaft | |
| JPS62243918A (en) | Scavenging hole controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUP | Patent expired |