DE1930603U - FUEL INJECTION PUMP FOR PISTON ENGINES. - Google Patents

Description

The control _; refers to vEraftstpffBinspritzp'umpen piston engines, and in particular: ^{i3inspr-itzpumpen_:;} with going pistons,: those for bowling; der-in the amount of fuel injected-: rotated ^ are »;

As is known, the injection pump of ^ one ; fuel pump fed, uhdV During; desvnut: z.bar ^ the fuel pressure in the Mnspritapjape- rsTehrShplie values in the order of magnitude. ^ of a few hundred; ^ atmosphereh *; ^: .

This pressure inevitably leads to. Leakage losses; an K _P aft ^ - ^ H; -V '. Substance between the-.EoITden wa d the cylinder wall of the j ^ mpeW; :: V ^.: / ■ "■ - ■; ■ If these leakages also include three sliding surfacesVvon / piston; undV ^": "■ -'-. '' cylinder able to lubricate and thus prevent seizure λ; ^ -τ of the ^ machinations sliding on each other «, -: so run ?: \ ' - ^; VV: but the leakage continues into the pump lineTsisaggi-egatei and ^ T .. : "dilute the lubricating oil there .--": ■ - ■ -; ■: ■. ■ ";" - ^; - - ^ :: - ';' - ■ ': ■■' ^. Vi-J ^

To these inconveniences too. avoid ^ :: should: the ^ a & aufeh ~; i ^; / de fuel; be caught before with. 4em lubricating oil ^r : U -VV ^: comes into contact «- ^:. - . ^: _; -'_ [/ r_ ^ ~ - ^: / - V- ¹ - "> to

A common solution for this is Joestehen; in this, . im :: cylindrical / ^ ::
Part of the piston, and / or: lh the inner -zylihdri ^{^::;}

wall grooves before zus address, as; Sequence wege- act and ^ eh / weg. ^ ^; - h. ' ■ the core fuel of the. 'Carry fuel pump ..- ^{This: -;} Is ~ solution; ^v 3 _edoch; ^" '' ■ '■ ^] ■.. Unbsfriedigend,:.;'. _ 'Well / ^ ^ IE liute relatively ^ grossed Planes.that use sliding surfaces on each other; ^ the ■ "" ί -; ■;
so that you are always on the fuel pump, ^ r; essential ^: Gunter; · dem; linspritÄdruci; · From this fblg-b ^ et: .j ^: edi ±; injection stroke ^} : -?> - ■ a momentary; Unevenness .aer-; on - elie 2-cylinder surface '-'4 - "■■ ;: of the piston acting ;. prints *: .-" ■ - ■ ·. = ■ ^: - - ;; W: - V / _V:; V / ^ ;; / -; / ^; - ^: /.

This creates / a strong. thrust
the cylinder., which occurs intermittently
other sliding K surfaces. caused..

The Firing Forgives _; .itua; - Äe-- € öglie1äkmten., r

To collect fuel and the unevenness of the back; Keep Λ as small as possible * - ', / -,: ■ ..-'/; ■ Λ , -: ' - "'; .- '-"; -. - "- oV ~

The auxiliary facilities explained below. of / Feuerung'- Λ ^3_: can be some additional and on / piston .. "create restrictive manufacturing steps / so-this ^-on-; directions of - .. even on existing pumps by Hachr-v work on nachträgiich Pistons can be attached:; where, the. Cylinder and ~ the .. other pump parts, not- changed to. Need ·.

Oabei / g.eht the feuerung- from "a b for .Kolbenmotoreh e> - - ^; voted fuel injection pump with a cylinder ^{\.; Two,} diametrically opposed .gegenüberliegenden e-ihlafikanälen -and Auslaßkanalj.... ; a sealing manner in which; .Zylinde r \ Bnge: _ordhet;> s back in the cylinder reciprocating and / axle his ■ Ii ähgs, .d cash flask one: wedge-shaped piston ^land: with sOhraub s, <- l ■ line-shaped edge has what · with; a .derJ / inlet ^":;: cooperates ducts to the height of the injection strokes between · _-:::.... a largest and a reduced stroke to VAER; iieren; _and? ^: one another at a distance, from dam .erstgenanntahf bridge reasonable * ^::: 'arranged piston land and e.ine'";_Eirignüt; -vW & ^ ν

a connecting line arranged inside the piston,.: dieC L _; _ ■■ with its one end opens into the annular groove iißd _with: their .ande-^ """ren end in a Ö_ffnung ^ diametrically, .gegenüber .einem Tangen-end of the wedge-shaped piston land -vorge is around &.:..; I) _{ies; e} P _r ^ump: -v .gemäß of the innovation is characterized by a: üjx But: the _v: C- ^ flask: which is: (pier to ψι / piston axis ■■ _':... one; "ijänge ...- extends ^ the at least-. as large: is" like "; the on / ^ die- Qüerriehtuhg ^ ..; ■", ""'. ίΛ-λ

pro j ied length of the helical-shaped eyelets Knte des ■ ■ - S ^ - wedge-shaped KolbensiiegSj woloei die-; ΐιιΐ with ~ def ^; mentioned.- ■ "■",; Opening: in the piston communicates; » -Other. Feature. / ^: The firing mark sicli ..dadurclij that & er_I) TJxdhmeBs & r piston opening at least equal to the length of the largest \ Injection2 shell and the air tariff less than the_length of the reduced ^;; • Injection stroke is, --.:_-,_; .: V \ - ^{Λ ■:::} - "'l \:. ^Ll: - ^" -

More renewal essential advantages and features of: ^ sich.aus eueruiig.-yield the following detailed Beschreih-INiG; "one-embodiment basis, shear drawings schemes ^;.? ^ -; :: ^-: - ^Λ;

In the drawings shows. ^ - V / -;> _: - ^ y ^ _; - ;; - _{: v} :; _: _ ^_.:::: - /

... Figure 1 is a; "Eumpe _with: the auxiliary equipment:; pursuant; d r / ielterung wherein _DER: cylinder along geschhiSten its ^ Längsachse-;: ^is,:;: - ..;. ': /..' ^! '-': _: - ■ '- ■' ■ '' ■ ^'-' -'- --.-: ;; _/; ^X: ^ _~;: - ■ "" ^ -. ; ^V

Fig. 2 is a longitudinal section; durch.-die -pumpenaehsre ;, \ / ^{L; J} \: -ι; ^: Γ ν ^ ^;

Fig. 3 shows a view corresponding to Fig. 1 ^. / Jedoeh-n ^^

ig. 4 die: piston and cylinder surface -in-one in e: iner operating position-, / and ^r -y ^: .. ': ":' ..- _v - ^:

Fig '»/ 5 a feil der; Figi .. 4- ^: in another

The pump shown has a cylinder. 1 up: ₅ . the ^; : den: ^ i. :, \ Compression space 6 forms in which the / both ^: each other- ^ diametrically ^; opposite inlet ducts / 4, 5 mouth ^ .that are connected to a fuel pump, not shown, and from / your .ein. : A> ^-:: ί -> / ~ injection nozzles being in communication / '/ ■■ / ^//: \ ^;;: / / - ^. "■ / \' - '"' ■ -

The piston which can be displaced in the cylinder .1; 2; owns; -a .wedge-. shaped piston land 12, which, by: a / helical edge. 3 is limited ... From the piston web 12 in the axial direction: ... by a recess; 13. takes place separately; himself ; one; another: Ste ^ g / 14s that of a third web 1 5 ■ through: a ring groove Ί :: @ bgetrenht: is »one in axial; Direction running end .lut ^ tö in d ^ m ^: "" 0 ^: te-g Λ 2 :. - connects the recess 13 with. the compression room; 6y. ΐ. ^: ; -; _; · /

The web 12 works with. the inlet duct 4. to ..control the injection quantity through early or delayed / release, .the ■ opening: 4s whereby, the. High der.'Injection strokes \ 25Wiäo3len-> ei.4eiii - IiÖph0tw # r% - ~: - and a "verklelnerteh value :; varies * ^ 'Wexax itself, the" piston in -f. the proximity of its bottom dead center. located ^ / are / the; Inlet "// ^.; Channels 4 and 5 of f en - .. (as. Shown in the iigures)., And the '. - ^ / - ^; through, a lie of the pressure fuel pump Supplied with fuel: /" ■■ ·: ■ /.',;- // ^: penetrates .through / channels 4 and / 5 into the compression space ^ ö ^ / Dle //: // ^ fuel pump conveys / -the fuel ^; a print: of ^ some ^. Atmospheres, / so- that: d; er compression space "- ■ β / schhell" filled wlrdi- ^: ..- "'

If the ^ piston ^ on its upward movement: the openings: 4: and- / 5?

β -

completely closed-has ^ throws-d

Compression room 6 by ;; the ^ lwslaß / l · "! vi ^ pressed - whereby the pressure rises to the value / des \ cMnui% a ^ of the injectors? - the ^ ql ^ en ^ Bet ^ yid ^^ iii & ^ v ^ zhT f Place 5 to the edge 3 of the piston tega 12 ;; denC. ^?: Einlaßfe ^ a ^: / 4- ^ outputs to fuel-from. the; space 6 _ durcn-die-lut ^ & ^ and "' άΐβ- ^{^:;} : - ΐ recess 13 zur- fuel pump; flow back .to overload * -K ^r: - ~ C, since during the injection stroke of the; - Dmcfe-.im; Eaiim :: δ "undi;^in;;; the ^Γ:; J recess 13 up to (the order of magnitude- a few: a hundred; vAtm.osphftireii increases . ,, '_ penetrates a. Considerable ^: amount: / Kraftsitoffi \ dureKi' ■ -äeit ■; ■ ;;; Gap between the piston lands _{12?; .I} ^ ^ jX .nndAdeio: '^ relieving 1 exits; cylinder end;; from the lower "and- ^{verMisciit;; sieJi-;" i:} - with the lubricating oil in the sump untenliegeifden "" - - "' .- .; - "■" ..- ..; ■ - ■ -.- '': -: ^..: "- ^ ^{^ -":;:} - ^;

Is in the "unknown piston designs ''; diecltingntrf: ^ -: so: -gebildets that ^they both-; ^as; -Sammelleitung; ■ alsVagch-as · is ¹ and the seeping of Brennstoi'fs ^ ^erlangsamtv; Beka &ntliäh; reduce .. but such barriers: di ^ LEecJ ^ ^ Erlu evnicMt -in- .r - sufficient '''.■■''-' ■ - ^{/: _i:;} ";;; ...- Λ.. ; ' ^: - ', _ ; :; ^ - ' "- ■ - ..:; Λ ^ -: ->^;: -

According to the invention, the piston -a ^ line; 8; "gefüliri ^ which opens into the annular groove 7"'; and. topV in ^: one; Open _; n ^ _; ^:: G> auäiMi ^ y; those on that; -Ieil of the piston; located / is;, ;; which-ieüL long: En of the web 12 diametrically opposite; lay down; Wennr'der ^; Flask ^; ; 2 ^; ; ^: j over that; Cylinder ': 1 niclit ^_twisted:: ^^ is fäll-b ^ as Iaiig & - Jlnd.el; :: S-Teges ..1; 2v together: the jMantellinie ^ it ^^ by: the;! ._ suffered the

is the center of the opening:.: 9 on the jacket line ^: which runs through: "-'-- '. the center of the inlet opening 5;»; - ^; \ "."-'"'." ■■ "- . "." -: ^-: ■ ..- ': - -

The opening 9 is from the head of the piston 2 .: so far ^ awayy; V that. then. if .the top edge; of piston 2 is in the category ? - the/. : Inlet opening .5 to be closed /, the opening 9 'the opening _ $: "- just touches. The diameter of the ■; opening 9; is not smaller": than the greatest concern. "Of the injection stroke ? Whereby; A liquid connection outside of the annular groove 7. and : the inlet opening ...- 5-is made. Therefore, all leaked Ki ^ aft * · ■ material from the annular groove IJ to the fuel pump -zuTu ^ kgele is the fuel in the dead .7 and-in the gap. the web 15 and the cylinder A ^ under. no .higherii: pressure that of the fuel pumpj-: that of the _Ga? ossprdhung; "some;';;;; . :: ";: Atmospheres" j thus be "Leckverlxiste in the" sump .; _: ;; : in, reduced - or whole; avoided. The in ; the! RingspaJ.t: - .. ..- ;; ■; .-; between the ridges T-2, 12 and 'the cylinder ";absickernde": J * r ^ t ": Λ material is lower injection pressure and forms intermediate / the cylinder 1 and the piston 2.". a: lubricant film. that the ; ; direct f between the sliding on each other
and "the piston prevents« "'-" - ":; · .- ■" -: ..-

The opening 9 is "in connection with a But: 10,;" which transversely to the axis of the piston 2 over a length; extends which ;.] on a: plane-across the .Kolbenaehse. projected en "Bange: -j | e; r; \ helical ^{edge. 3 equals;} lst | :: die ^.; .width of;" ifutt. ^ ^: t _: Ö ^: ;; i "S% ^ r ⁱ " smaller than ; the; Height; d; e; s ^^. ihg.erten./Einspritzhiilies-,::^-bei, .um a - axis relative to the cylinder t ^: twisted "K ^ lhen>'2; :::

■■■■ '■ V' -: α-β- ./a■■.-■■, ä / a /, // - /: ^ ;;; ^ x: i ;;; \ ^ ;: ;

the hat 7 during part of the _: injection stroke ~ m ^ opening of the inlet channel 5 in connection; standsv DuringA of the λ- "// ν the rest of the rope of theAHubes- the opening 5 Vdürpii__den Steg-12 is closed, whereby: the fuel from '^^ ■ -space ^; Cβ-; i] iΐ ■ äe2i ■ - ^", ■ ^; .; v'- ^:

Gap between the webs \ 12, 14 * 15 andAdemA cylinder 1. ■■ "■;.;\;; penetrates and thus / the lubricating film, between; de; m \ cylinder ΐ. Again, he ^ represents. 'V - : - '' ■■ '.- _-: - -

Thanks to the above-described arrangement - the line,. 8: 1st / the piston 2 during the. Injection hoof - an even /:. ::! "Fuel pressure; exposed, apart from Tön ^: an area of the bridge; 12y. ^; - the by the; Sections- 1 7 _S g

the / areas, the - .. opening S / and / of the groove -10 is defined _f / which extends beyond a section 19 first / ec / keny> the ^ ähr injection stroke with the. inlet opening 5 coincides / falls V

When the piston rotates - we "ä, ^v / closes the 0teg -: / 12 _? -"vweil; the ^. Groove 10 has a width / which is less: -ist_ al. & ^ Ie ^; ; Hb'he; /. De / s ^; -.; // Injection stroke_> the-.opening ..5- yor the. Termination; / of: / injection stroke so that the / under. high pressure - standing JCraf tst ^ of f V ^ üs "/: d.em / space 6 and ..der recess 13 in ^ en /Spaltr^m./^wisZeiien 1 2, 14-j 1 5 and the; cylinder 'can periodically restore * \. \. -' 1 ^ penetrate lann and / _den / - ■ ^/;;;. - Av .: '-' ■ - \ :: '-::.

In the above description, one is preferred e des "// leuerungsgegenstahdes / - / specified? /: of course

Claims (2)

S-. c .h _u t: ζ a η / a ρ ■ -r. ti "ch: e- 1, Pur piston engines TDes-timmte.-Fuel off injection pump- '-'- ■ :. :; ^; : .V with one cylinder .with two diametrically opposite each other - :: - ;;;; lying inlet ducts and a VÄusTaßkanäl * yourYabWY - sealingly arranged in the cylinder, inT cylinder lain-, and forthcoming and around. its longitudinal axis, rotatable eil · piston ^ of \ - V a wedge-shaped KölToensteg _: with. it has a screw-shaped ^ edge, .which "cooperates with one of the.-inlet ports ^ :. '. worked to. vary the higher; injection strokes between yeihem'largest; / and a; reduced stroke,; - and: the ': besides ^ em: another., with a spacing ivon ". the "first-mentioned VSt eg Vange ^ · arranged piston land as well as an annular groove,: also ^ with ^" one - in the piston interior - arranged connection lines; -. with its one end- in the; Ring groove and with it ^ -other open into an opening ty / which is diametrically opposite one- "long end of the wedge-shaped; Kölbenstegs ^v ProvidedViBt ₅ marked- ^; _: ^;: - characterized by a; hat: (7) - in the.- _? Schraubenlinlenförmigen edge DES:; the / projected e-ength: ^-:; piston (2) * - ,. extending transversely to the piston axis in a length er'streckt -_ the niihdes tejis SOV is large as to the transverse direction wedge shaped; Kölbenste: gsy wherein the JTU t ^ with said opening (9): _in;:; piston (2 ^ .. is -v-_:;: in compound - ■ _'::' - '.... - ^; '::;: XC: ^ :: _ ^: - _: y7- : - ./V:-: ^ ί 2.. FUEL INJECTION PUMP &. according to ¹ claim 1; characterized by: geke.nn ** x ^: \: y draws that the diameter: ". der; .Eioliyenoff mikg ^ ί9θ at least, equal to the length ^: ä: iä \ / ^ & ß ^ en'ßiJsLBipti ^^^: width less than: the length of the -Terringert envlln Spritzw hubes is «. ^ v -; - /. ^: ..-- ".> ν A - ■■■■ '- - ^{: /:} ■ ^y v-"^;;: ---- For: lIÄOr SÖ-isiÄta ^ per ^; Jtziöitl - ; S ₁ SIABGEIi