US3895886A - Device for correcting the delivery of a distributing injection pump and pump equipped therewith - Google Patents

Device for correcting the delivery of a distributing injection pump and pump equipped therewith Download PDF

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Publication number
US3895886A
US3895886A US353533A US35353373A US3895886A US 3895886 A US3895886 A US 3895886A US 353533 A US353533 A US 353533A US 35353373 A US35353373 A US 35353373A US 3895886 A US3895886 A US 3895886A
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US
United States
Prior art keywords
distributor
longitudinal
cup
stop means
rod
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
US353533A
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English (en)
Inventor
Jean Leblanc
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Industrielle Generale de Mecanique Appliquee SIGMA SA
Original Assignee
Gen Mecanique Applique S I G M
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 Gen Mecanique Applique S I G M filed Critical Gen Mecanique Applique S I G M
Application granted granted Critical
Publication of US3895886A publication Critical patent/US3895886A/en
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Expired - Lifetime legal-status Critical Current

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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
    • F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
    • F02M41/02—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor being spaced from pumping elements
    • F02M41/06—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor being spaced from pumping elements the distributor rotating
    • F02M41/063—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor being spaced from pumping elements the distributor rotating the distributor and rotary valve controlling fuel passages to pumping elements being combined
    • F02M41/066—Arrangements for adjusting the rotary valve-distributor

Definitions

  • FIG. 8 shows, partially, another modification of the end of the rod of FIGS. 1 to 4.
  • the pump comprises a fixed body l, preferably in two coaxial parts la and lb and a rotary distributor or slide valve 2 driven in rotation. inside a bore 3 formed in the body, by a coaxial shaft 4, which is itself driven by the engine (not shown) supplied by the pump.
  • the circuit for supplying fuel from the pumping bore 6 comprises a priming pump 15, for example with conjugated inner profiles, of which the aspiration communieatcs with an intake connector 16.
  • the delivery of this pump 15 is connected to the inside of the casing 12, by means of a passage 17.
  • Holes 18 formed in the frustoconic enlargement 4a enable the passage of the liquid circulated by the pump 15 towards the measuring orifices 22, equal in number to that of the cylinders to be supplied. which open in the bore 3 at the level of a first longitudinal measuring groove 23 which ends in a peripheral groove 24, formed in the slide valve 2 so as to communicate permanently with the pumping bores 6.
  • a regulator 26, sensitive to the rotary speed of the drive shaft 4, is provided to control the longitudinal displacements of the slide valve 2, the latter being subject, on one hand, to the effect of the regulator 26, through thrust means P and, on the other hand, to the opposite effect of flexible return means R through stop means B cooperating with the slide valve 2.
  • Second flexible means 27 constituted by a helical spring are provided between the slide valve 2 and the thrust means P,
  • the outer diameter of the end 2b is less than the outer diameter of the rest of the slide valve 2, so that a shoulder 2c is formed at the junction of these two parts.
  • the spring 27 is arranged between this shoulder 2c and a shoulder provided inside the ring 32.
  • the correcting device as shown in the drawings is such that a longitudinal displacement of the rod 42 with respect to the cup or bowl 47, causes a displacement in the opposite direction to the slide valve 2 with respect to said cup 47.
  • FIG. 6 there can be seen a ferrule 450 comprising two frustoconic parts 46a, 46b, both converging in the direction which recedes from the slide valve 2. These frustoconic parts are separated, in the longitudinal direction, by a cylindrical portion 46c which is connected to the large base of the part 46a and to the small base of the part 46197
  • a longitudinal displacement of the rod and of the ferrule 450, with respect to the bowl 47 causes a displacement in the opposite direction of the slide valve 2.
  • the balls 51 cooperate with the cylindrical part 46c, the longitudinal displacement of the ferrule 45a leaves the slide valve 2 immobile in translation, with respect to the bowl 47.
  • the end of the rod 42 forming the ferrule which cooperates with the balls 5] can have, according to need, other shapes, for example that of a diabalo obtained by reversing the direction of the slopes of the frustoconic parts of the ferrule of FIG. 8, or the shapes obtained by reversing the direction of the slope of the frustoconic part 46 of FIGS. 1 to 4 or by reversing the direction of the slopes of the frustoconic parts 46a, 46b of FIG. 6.
  • This curve represents the variations of the delivery per revolution 0 borne as ordinates, as a function of the variations in speed of rotation N, as abscissae, of the drive shaft 4, which speed, or a multiple or factor thereof, is equal to the rotary speed of the engine supplied by the pump.
  • the cup 47 will hence remain immobile axially whilst the ring 32 will approach this cup by compressing the spring 27.
  • This displacement of the ring 32 is accompanied by the displacement of the rod 42 and of the ferrule 45 which also approach the cup 47.
  • the ferrule 45 and more particularly the frustoconic surface 46 by approaching the cup 47, causes the ascent of the balls 51 on the frustoconic surface 47a of the cup 47. On their ascent, the balls 51 push the front end 2a of the slide valve 2 so that the latter is spaced from the cup 47 held immobile by the lever 40 which is also immobile.
  • part a b' c d' of this curve of FIG. 7 is similar to the part a, b, c, d of FIG. 5 and corresponds to the cooperation of the balls 51 with the surfaces 460, 460 shown in FIG. 6.
  • the abscissae of the point d is denoted by N,.
  • the stop means are constituted by a cup mounted freely in translltiltlil in a sleeve mounted free in rotation on the distributor.
  • this sleeve being connected in translation to the distributor and the cup being supported against one end of a lever of which the other end cooperates with flexible return means of the regulator, said cup compiising a surface of revolution inclined to the axial dircctitm of the distributor whilst the end of the rod, neighboring the cup. comprises also at least one surface of revolution inclined to said longitudinal direction. the inclined surfaces of revolution of the rod and of the cup approaching one another transversely, with respect to the axis of the distributor, in a direction parallel to the longitudinal direction of this distributor.

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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)
US353533A 1972-05-08 1973-04-23 Device for correcting the delivery of a distributing injection pump and pump equipped therewith Expired - Lifetime US3895886A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7216432A FR2184153A5 (US20080293856A1-20081127-C00150.png) 1972-05-08 1972-05-08

Publications (1)

Publication Number Publication Date
US3895886A true US3895886A (en) 1975-07-22

Family

ID=9098180

Family Applications (1)

Application Number Title Priority Date Filing Date
US353533A Expired - Lifetime US3895886A (en) 1972-05-08 1973-04-23 Device for correcting the delivery of a distributing injection pump and pump equipped therewith

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Country Link
US (1) US3895886A (US20080293856A1-20081127-C00150.png)
DE (1) DE2322858C3 (US20080293856A1-20081127-C00150.png)
FR (1) FR2184153A5 (US20080293856A1-20081127-C00150.png)
GB (1) GB1428824A (US20080293856A1-20081127-C00150.png)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4055387A (en) * 1974-12-06 1977-10-25 Cav Limited Liquid fuel injection pumping apparatus
US4486154A (en) * 1981-09-04 1984-12-04 Robert Bosch Gmbh Fuel injection pump

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2849093C2 (de) * 1978-11-11 1987-01-22 Klöckner-Humboldt-Deutz AG, 5000 Köln Mechanischer Drehzahlregler für eine Einspritzpumpe
DE3010644A1 (de) * 1980-03-20 1981-09-24 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzpumpe fuer brennkraftmaschinen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3139875A (en) * 1961-08-22 1964-07-07 Cummins Engine Co Inc Fuel supply apparatus for internal combustion engine
US3319568A (en) * 1965-07-16 1967-05-16 Ford Motor Co Fuel injection pump assembly
US3323506A (en) * 1963-12-19 1967-06-06 Sigma Fuel injection pumps having a rotating distributing valve
US3330265A (en) * 1963-12-04 1967-07-11 Sigma Fuel injection pumps for internal combustion engines
US3650259A (en) * 1969-07-10 1972-03-21 Roto Diesel Sa Fuel injection pumps for combustion engines
US3752138A (en) * 1971-08-09 1973-08-14 Int Harvester Co Engine injection pump operating all cylinders or less

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3139875A (en) * 1961-08-22 1964-07-07 Cummins Engine Co Inc Fuel supply apparatus for internal combustion engine
US3330265A (en) * 1963-12-04 1967-07-11 Sigma Fuel injection pumps for internal combustion engines
US3323506A (en) * 1963-12-19 1967-06-06 Sigma Fuel injection pumps having a rotating distributing valve
US3319568A (en) * 1965-07-16 1967-05-16 Ford Motor Co Fuel injection pump assembly
US3650259A (en) * 1969-07-10 1972-03-21 Roto Diesel Sa Fuel injection pumps for combustion engines
US3752138A (en) * 1971-08-09 1973-08-14 Int Harvester Co Engine injection pump operating all cylinders or less

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4055387A (en) * 1974-12-06 1977-10-25 Cav Limited Liquid fuel injection pumping apparatus
US4486154A (en) * 1981-09-04 1984-12-04 Robert Bosch Gmbh Fuel injection pump

Also Published As

Publication number Publication date
GB1428824A (en) 1976-03-17
DE2322858C3 (de) 1975-02-06
FR2184153A5 (US20080293856A1-20081127-C00150.png) 1973-12-21
DE2322858B2 (de) 1974-06-12
DE2322858A1 (de) 1973-11-15

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