FI84093B - INSPRUTNINGSPUMP FOER BRAENSLE. - Google Patents

INSPRUTNINGSPUMP FOER BRAENSLE. Download PDF

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Publication number
FI84093B
FI84093B FI894055A FI894055A FI84093B FI 84093 B FI84093 B FI 84093B FI 894055 A FI894055 A FI 894055A FI 894055 A FI894055 A FI 894055A FI 84093 B FI84093 B FI 84093B
Authority
FI
Finland
Prior art keywords
chamber
piston member
fuel
pressure
lubricating oil
Prior art date
Application number
FI894055A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI84093C (en
FI894055A0 (en
FI894055A (en
Inventor
Carl-Erik Roesgren
Original Assignee
Waertsilae Diesel Int
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Waertsilae Diesel Int filed Critical Waertsilae Diesel Int
Priority to FI894055A priority Critical patent/FI84093C/en
Publication of FI894055A0 publication Critical patent/FI894055A0/en
Priority to DE19904026689 priority patent/DE4026689A1/en
Priority to GB9018810A priority patent/GB2237074A/en
Publication of FI894055A publication Critical patent/FI894055A/en
Application granted granted Critical
Publication of FI84093B publication Critical patent/FI84093B/en
Publication of FI84093C publication Critical patent/FI84093C/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0001—Fuel-injection apparatus with specially arranged lubricating system, e.g. by fuel oil
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/442—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston means preventing fuel leakage around pump plunger, e.g. fluid barriers

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Description

8409384093

POLTTOAINEEN RUISKUTUSPUMPPU - INSPRUTNINGSPUMP FÖR BRÄNSLEFUEL INJECTION PUMP - INSPRUTNINGSPUMP FÖR BRÄNSLE

Keksinnön kohteena on patenttivaatimuksen 1 johdanto-osan mukainen polttoaineen tms. paineväliaineen ruiskutuspumppu.The invention relates to a fuel or similar pressure medium injection pump according to the preamble of claim 1.

Polttomoottoreissa käytettävissä ruiskutuspumpuissa, joissa polttoaine pumpun mäntäelimen avulla ensin puristetaan kovaan 5 paineeseen ja sen jälkeen syötetään edelleen moottorin sylinteriin, polttoainetta pääsee juuri korkean paineen johdosta vuotamaan myös mäntäelimen vaippapinnan ja pumppu-kammion sisäpinnan väliin aiheuttaen likaantumista ja korroosiota. Lisäksi tällainen vuotava polttoaine kulkeutuu 10 kampikammioon ja sekoittuu voiteluöljyyn, mistä on seurauk sena moottorin voiteluöljyn ominaisuuksien muuttuminen epätoivotulla tavalla.In injection pumps for internal combustion engines, where the fuel is first pressed to a high pressure by the pump piston member and then fed to the engine cylinder, fuel can also leak between the piston member casing and the pump chamber inner surface due to high pressure, causing fouling and corrosion. In addition, such leaking fuel enters the crankcase 10 and mixes with the lubricating oil, resulting in an undesired change in the properties of the engine lubricating oil.

Keksinnön tarkoituksena on aikaansaada rakenteeltaan ja toiminnaltaan yksinkertainen ratkaisu mainitun ongelman 15 ehkäisemiseksi.The object of the invention is to provide a solution with a simple structure and function in order to prevent said problem.

Keksinnön tavoitteet saavutetaan patenttivaatimuksessa 1 määritetyllä ratkaisulla, jota on alivaatimuksissa edelleen täsmennetty. Keksinnön mukaan ruiskutuspumpun pumppukammio ja mäntäelin määrittävät pumppukammion polttoainetta sisäl-20 tävästä painetilasta erillään olevan lisäkammion, joka on täytetty voiteluöljyllä ja jonka tilavuuteen mäntäelin liikkeellään vaikuttaa. Näin ollen sama mäntäelin liikkeellään puristaa sekä polttoainetta että mainitussa lisäkam-miossa olevaa voiteluöljyä aikaansaaden männän vaippapintaa 2b pitkin tapahtuvia polttoainevuotoja ehkäisevän vastapaineen.The objects of the invention are achieved by the solution defined in claim 1, which is further specified in the subclaims. According to the invention, the pump chamber and the piston member of the injection pump define an additional chamber separate from the fuel-containing pressure space of the pump chamber, which is filled with lubricating oil and whose volume is affected by the movement of the piston member. Thus, the same piston member in its motion compresses both the fuel and the lubricating oil in said additional chamber, providing a back pressure to prevent fuel leaks along the piston jacket surface 2b.

Samalla tapahtuu myös mäntäelimen ja pumppukammion sisäpinnan voitelu ja tiivistäminen.At the same time, the inner surface of the piston member and the pump chamber is lubricated and sealed.

Käytännössä mainittu lisäkammio aikaansaadaan yksinkertaisesti muuttamalla sekä pumppukammion että mäntäelimen halkai-30 sijaa niin että syntyy porrastus. Järjestämällä mainitun porrastuksen ohjausreuna peittämään sen kanavan suun, jolla voiteluöljyä syötetään mainittuun lisäkammioon, voidaan 2 84093 voiteluöljyn painetta oleellisesti kasvattaa ja vaikutusta lisätä juuri silloin kun polttoaineen paine pumppukammion painetilassa on korkeimmillaan ja vuotoriski suurimmillaan.In practice, said additional chamber is obtained simply by changing the diameter of both the pump chamber and the piston member so that a step is created. By arranging the leading edge of said step to cover the mouth of the duct through which the lubricating oil is fed to said additional chamber, the pressure of 2 84093 lubricating oil can be substantially increased and the effect increased just when the fuel pressure in the pump chamber pressure is at its highest and the risk of leakage is greatest.

Pumppukammion painetilan ja mainitun lisäkammion väliin 5 voidaan edullisesti järjestää vuotoura ylimääräisen voitelu- öljyn sekä mahdollisen polttoaineen keräämiseksi ja poisjohta-miseksi. Lisäksi mainitun vuotoöljyuran ja pumppukammion painetilan väliin voidaan vielä järjestää toinen polttoaineen sisäänsyöttökanavaan yhteydessä oleva ura, joka alentaa myös 10 pumppukammion ja mäntäelimen välyksessä vaikuttavaa korkeaa polttoaineen ruiskutuspainetta. Siten tämä lisäura osaltaan ehkäisee polttoaineen virtaamista alemmas välyksessä mainittuun varsinaiseen vuotoöljyuraan ja vähentää siten vuotopolt-toainevirtausta ulos ruiskutuspumpusta.Between the pressure space of the pump chamber and said additional chamber 5, a leakage groove can advantageously be provided for collecting and draining excess lubricating oil and any fuel. In addition, a second groove connected to the fuel supply channel can be provided between said leakage oil groove and the pressure chamber of the pump chamber, which also reduces the high fuel injection pressure acting in the clearance between the pump chamber and the piston member. Thus, this additional groove contributes to preventing the flow of fuel into the actual leakage oil groove mentioned in the lower clearance and thus reduces the leakage fuel flow out of the injection pump.

15 Keksintöä selostetaan seuraavassa tarkemmin viitaten ohei seen piirustukseen, jonka ainoa kuvio esittää periaateratkaisuna erästä keksinnön mukaista polttoaineen ruiskutus-pumpun sovellusmuotoa leikattuna.The invention will now be described in more detail with reference to the accompanying drawing, the only figure of which shows in principle a sectional view of an embodiment of a fuel injection pump according to the invention.

Piirustuksessa tarkoittaa viitenumero 1 ruiskutuspumpun 20 sylinterielementtiä, jossa on pumppukammio 6, joka on varustettu polttoaineen sisäänsyöttökanavalla 3 ja ulosruis-kutuskanavalla 7, joka johtaa paineohjattuun ruiskutusvent-tiiliin. Pumppukammiossa on edestakaisin liikkuva mäntäelin 2, joka liikkeellään aikaansaa polttoaineen puristamisen 25 korkeaan paineeseen pumppukammion painetilassa 11.In the drawing, reference numeral 1 denotes a cylinder element of an injection pump 20 having a pump chamber 6 provided with a fuel inlet duct 3 and an ejection duct 7 leading to a pressure-controlled injection valve. The pump chamber has a reciprocating piston member 2 which, by its movement, causes the fuel 25 to be compressed to a high pressure in the pressure space 11 of the pump chamber.

Ruiskutuspumppu käsittää myös lisäkammion 4, johon syötetään voiteluöljyä pitkin kanavaa 8, jonka syöttöaukkoa on merkitty viitenumerolla 12. Pumppukammion painetilan 11 sekä lisäkammion 4 väliin on järjestetty vuotoöljyura 13 ylimääräisen 30 voiteluöljyn sekä mahdollisen vuotaneen polttoaineen keräämi seksi ja edelleen poisjohtamiseksi kanavaa 9 pitkin. Lisäksi vuotoöljyuran 13 ja painetilan 11 välissä on lisäura 14, joka on kanavan 10 kautta yhdistetty polttoaineen sisäänsyöttökanavaan 3 ja joka siten alentaa myös pumppukammion 6 jaThe injection pump also comprises an additional chamber 4 to which lubricating oil is fed along a channel 8, the supply port of which is indicated by reference number 12. A leakage oil groove 13 is provided between the pump chamber pressure chamber 11 and the additional chamber 4 to collect additional 30 lubricating oil and any spilled fuel In addition, between the leakage oil groove 13 and the pressure space 11 there is an additional groove 14 which is connected to the fuel supply duct 3 via the duct 10 and which thus also lowers the pump chamber 6 and

Claims (4)

1. Insprutningspump för bränsle e.dyl. tryckmedium omfattande ett cylinderelement (1), som innefattar en med inmatningskanal (3) och utsprutningskanal (7) försedd pumpkammare (6) samt ett 84093 5 i pumpkammaren fram och äter rörligt kolvorgan (2), som genom sin rörelse ästadkommer trycksättning av bränslet till högt tryck i pumpkammarens tryckutrymme (11) för att vidare inmatas genom utsprutningskanalen (7) exempelvis tili en förbrännings-5 motors cylinder, kännetecknad därav, att pumpkammaren (6) och kolvorganet (2) definierar en kolvorganets (2) mantelyta omgivande och frän nämnda tryckutrymme (11) avskild extra kammare (4) sär att en avsats ästadkommits genom förändring av diametern hos pumpkammaren (6) och kolvorganet (2), att 10 nämnda extra kammare (4) är anordnad att fyllas med smörjolja och att kolvorganet (2) vid trycksättning av bränslet samtidigt är anordnat att genom sin rörelse trycksätta även den tili den nämnda extra kammaren (4) matade smörjoljan, sä att smörjoljan pä grund av det ökade trycket smörjer kolv-15 organets (2) mantelyta och avtätar den mot pumpkammarens (6) vägg och förhindrar läckage av bränslet längs kolvorganets (2) mantelyta tili nämnda extra kammare (4) och därifrän vidare tili andra delar av kolvorganet och motorn.1. Fuel injection pump, etc. a pressure medium comprising a cylinder element (1) comprising a pump chamber (6) provided with an inlet duct (3) and a discharge duct (7) and a front chamber and a movable piston member (2) which, through its movement, pressurize the fuel to high pressure in the pressure chamber (11) of the pump chamber to be further fed through the ejection channel (7), for example, into the cylinder of an internal combustion engine, characterized in that the pump chamber (6) and the piston member (2) define the circumferential surface of a piston member (2) and from said pressure compartment (11) separated by a separate chamber (4), such that a ledge is obtained by changing the diameter of the pump chamber (6) and the piston member (2), that said auxiliary chamber (4) is arranged to be filled with lubricating oil and that the piston member (2) when pressurizing the fuel, at the same time, it is arranged to pressurize the lubricating oil supplied to the said auxiliary chamber (4) through its movement, so that the lubricating oil on round of the increased pressure, lubricates the casing surface of the piston member (2) and seals it against the wall of the pump chamber (6) and prevents leakage of the fuel along the casing surface of the piston member (2) into said extra chamber (4) and thence to other parts of the piston member and motor. 2. Insprutningspump enligt patentkravet 1, kännetecknad därav, 20 att en matningskanal (8) för smörjolja är ansluten tili nämnda extra kammare (4) och att nämnda avsats i kolvorganet (2) innefattar en styrkant (5), som är anordnad att övertäcka öppningen (12) tili nämnda matningskanal (8) för höjning av smörjoljans tryck och inverkan dä bränsletrycket är som högst.An injection pump according to claim 1, characterized in that a lubricating oil supply channel (8) is connected to said auxiliary chamber (4) and said ledge in the piston member (2) comprises a guide edge (5) arranged to cover the opening. (12) to said feed channel (8) for increasing the pressure of the lubricating oil and the effect where the fuel pressure is at its highest. 3. Insprutningspump enligt patentkravet 1 eller 2, känne tecknad därav, att en läckoljekanal (13) är anordnad mellan pumpkammarens tryckutrymme (11) och nämnda extra kammare (4) för uppsamling och bortledning av överflödig smörjolja och eventuellt av bränsle.An injection pump according to claim 1 or 2, characterized in that a leakage oil duct (13) is arranged between the pressure chamber (11) of the pump chamber and said extra chamber (4) for collecting and discharging excess lubricating oil and possibly of fuel. 4. Insprutningspump enligt patentkravet 3, kännetecknad därav, att en andra kanal (14) med förbindelse tili inmatnings-kanalen (3) för bränsle är anordnad mellan nämnda läckoljekanal (13) och pumpkammarens tryckutrymme (11) för reducering av det höga insprutningstryck hos bränslet som räder även i 35 mellanrummet mellan pumpkammaren (6) och kolvorganet (2).Injection pump according to claim 3, characterized in that a second duct (14) connected to the fuel inlet duct (3) is arranged between said leak oil duct (13) and the pressure chamber (11) of the pump chamber for reducing the high injection pressure of the fuel. which also raises in the space between the pump chamber (6) and the piston member (2).
FI894055A 1989-08-30 1989-08-30 INSPRUTNINGSPUMP FOER BRAENSLE. FI84093C (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI894055A FI84093C (en) 1989-08-30 1989-08-30 INSPRUTNINGSPUMP FOER BRAENSLE.
DE19904026689 DE4026689A1 (en) 1989-08-30 1990-08-23 Fuel injection pump - has additional oil-filled chamber formed by pump chamber and piston
GB9018810A GB2237074A (en) 1989-08-30 1990-08-29 Injection pump for fuel supply to an engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI894055 1989-08-30
FI894055A FI84093C (en) 1989-08-30 1989-08-30 INSPRUTNINGSPUMP FOER BRAENSLE.

Publications (4)

Publication Number Publication Date
FI894055A0 FI894055A0 (en) 1989-08-30
FI894055A FI894055A (en) 1991-03-03
FI84093B true FI84093B (en) 1991-06-28
FI84093C FI84093C (en) 1991-10-10

Family

ID=8528911

Family Applications (1)

Application Number Title Priority Date Filing Date
FI894055A FI84093C (en) 1989-08-30 1989-08-30 INSPRUTNINGSPUMP FOER BRAENSLE.

Country Status (3)

Country Link
DE (1) DE4026689A1 (en)
FI (1) FI84093C (en)
GB (1) GB2237074A (en)

Families Citing this family (19)

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Publication number Priority date Publication date Assignee Title
DE4409555C2 (en) * 1994-03-19 2003-04-17 Caterpillar Motoren Gmbh & Co Device for generating pressure for a pressure oil lock of an injection pump
DE19527719A1 (en) * 1995-07-31 1997-02-06 Woodward Governor Germany Gmbh Fuel injection system
AT6427U1 (en) * 2000-05-18 2003-10-27 Avl List Gmbh METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE OPERATING WITH LIQUID GAS
ITPN20000066A1 (en) * 2000-10-20 2002-04-20 Wartsila Nsd Italia Spa POWER SUPPLIES PERFECTED IN DIESEL ENGINES NAMED "COMMON RAIL"
JP4304887B2 (en) * 2001-06-19 2009-07-29 株式会社デンソー Fuel supply system for alternative fuels
DE10134068A1 (en) * 2001-07-13 2003-01-30 Bosch Gmbh Robert Internal combustion engine, in particular for motor vehicles
US8061328B2 (en) 2005-03-09 2011-11-22 Caterpillar Inc. High pressure pump and method of reducing fluid mixing within same
JP4386030B2 (en) 2005-12-02 2009-12-16 トヨタ自動車株式会社 High pressure pump
JP4625789B2 (en) 2006-07-20 2011-02-02 日立オートモティブシステムズ株式会社 High pressure fuel pump
DE102007019909B4 (en) * 2007-04-27 2019-07-11 Man Energy Solutions Se Fuel pump with leakage grooves
US8261718B2 (en) * 2007-11-01 2012-09-11 Caterpillar Inc. High pressure pump and method of reducing fluid mixing within same
FI120602B (en) 2008-01-02 2009-12-15 Waertsilae Finland Oy Method and apparatus for testing the injection pump piston
JP4911199B2 (en) * 2009-06-17 2012-04-04 株式会社デンソー Fuel condition detection device
EP2530315A1 (en) * 2011-06-02 2012-12-05 Delphi Technologies Holding S.à.r.l. Fuel pump lubrication
DE202011108107U1 (en) * 2011-11-19 2013-02-21 Adriaan Verstallen Stepped piston pump for pumping four different liquids with a seal and lubrication of the stepped piston exclusively by means of a lubricious liquid via grooves on the piston circumference
CN104595075B (en) * 2014-12-08 2017-07-28 余姚市舒春机械有限公司 A kind of wear-resisting type plunger and bare of injection pump with lubrication system
CN104696128A (en) * 2015-01-15 2015-06-10 东风朝阳朝柴动力有限公司 Fuel injection pump with ventilation function
CN108533430B (en) * 2018-05-07 2023-12-19 梁跃中 Super-high pressure fuel pump structure of diesel engine
CN117267115A (en) * 2023-11-20 2023-12-22 中船动力研究院有限公司 Sealing structure of plunger type movement mechanism

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GB285675A (en) * 1927-03-29 1928-02-23 Poul Arne Scott Iversen Improvements in pumps
GB852430A (en) * 1956-12-27 1960-10-26 Sigma Lutin Piston or plunger pumps
GB834710A (en) * 1957-09-04 1960-05-11 Su Carburetter Co Ltd Improvements relating to fuel-injection pumps for compression-ignition internal combustion engines

Also Published As

Publication number Publication date
DE4026689A1 (en) 1991-03-07
FI84093C (en) 1991-10-10
FI894055A0 (en) 1989-08-30
FI894055A (en) 1991-03-03
GB2237074A (en) 1991-04-24
GB9018810D0 (en) 1990-10-10

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Owner name: OY WARTSILA DIESEL INTERNATIONAL LTD.