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US2995951A - Control for liquid fuel pumps for compression ignition engines - Google Patents

Control for liquid fuel pumps for compression ignition engines Download PDF

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Publication number
US2995951A
US2995951A US29062A US2906260A US2995951A US 2995951 A US2995951 A US 2995951A US 29062 A US29062 A US 29062A US 2906260 A US2906260 A US 2906260A US 2995951 A US2995951 A US 2995951A
Authority
US
United States
Prior art keywords
push
housing
pieces
depressed
push piece
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
US29062A
Other languages
English (en)
Inventor
Evans Fraser Mackie
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.)
CAV Ltd
Original Assignee
CAV Ltd
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 CAV Ltd filed Critical CAV Ltd
Application granted granted Critical
Publication of US2995951A publication Critical patent/US2995951A/en
Anticipated expiration legal-status Critical
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
    • F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
    • F02M43/02—Pumps peculiar thereto
    • 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
    • F02M59/447—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 specially adapted to limit fuel delivery or to supply excess of fuel temporarily, e.g. for starting of the engine
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20207—Multiple controlling elements for single controlled element
    • Y10T74/20238—Interlocked
    • Y10T74/20244—Push button
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20396—Hand operated
    • Y10T74/20468—Sliding rod
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20582—Levers
    • Y10T74/2063—Stops
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20636—Detents

Definitions

  • This invention relates to liquid fuel pumps for compression ignition engines, and of the kind incorporating an axially movable regulating rod for determining the quantity of fuel supplied to the engine, and a stop for limiting movement of the rod in one direction so as to determine the maximum quantity of fuel which can be supplied to the engine.
  • the stop In such pumps it is usual for the stop to be adjustable. However, in certain countries where the normal fuel oil may not be readily available it may be necessary at times for the engine with which the pump is associated, to run on petrol or paraffin. A change from one type of fuel to another will necessitate a change in the position of the stop determining the maximum quantity of fuel which can be fed to the engine, and the object of the present invention is to provide convenient means whereby adjustment of the stop can be readily effected to suit sutch changes of fuel without disturbing the initial adjustment of the stop.
  • a stop for a liquid fuel pump of the kind specified comprises in combination a housing, a plurality of spring-loaded push pieces mounted in the housing with their outer ends extending through one side thereof, a shoulder on the portion of each push piece within the housing which is presented to the other push piece or pieces, the shoulders on the plurality of pieces being disposed at different distances from their inner ends respectively, and a catch member within the housing for co-operation with the shoulders of the push pieces in such a manner that upon depression of any one push piece the catch member will be moved automatically to a position to retain it in the depressed position whilst releasing a previously depressed push piece.
  • FIGURES 1 and 2 respectively are part-sectional side and end views taken respectively on the lines 11 of FIGURE 2 and 22 of FIGURE 1, and illustrating one example of the invention whilst FIGURES 3 and 4 are similar views taken respectively on the lines 33 of FIGURE 4 and 4-4 of FIGURE 3, and illustrating a modification.
  • the fuel pump may be of any convenient kind incorporating a longitudinally movable regulating rod 1 for determining the quantity of fuel supplied to the engine cylinder or cylinders at each reciprocation of the pump plunger or plungers.
  • a stop 2 For limiting movement of the regulating rod in one direction and thereby determining the maximum quantity of fuel which can be fed to the engine, there is provided a stop 2.
  • the stop comprises an externally screw-threaded spigot 3 secured to the injection pump housing or some other relatively fixed part 4, and having a central bore through which extends a cylindrical abutment member 5 against one end of which the regulating rod 1 is adapted to bear in the maximum fuel supply position.
  • a lock-nut 6a In engagement with the spigot 3 is an internally screw-threaded portion extending from one side of a housing 6, a lock-nut 6a being provided on the spigot 3 whereby the housing 6 can be locked at a desired setting on the spigot.
  • the shoulders 9, 10 are at different distances from the inner ends of the push pieces 7, 8 respectively, and the inner ends are positioned to act alternatively as abutments for the member 5 as will be described.
  • the inner ends of the push pieces 7, 8 are recessed to accommodate the ends of a pair of coiled compression springs 11, 12 acting between the housing and the push pieces in a direction to move the latter outwardly.
  • a catch member which may take the form of a roller 13 constrained for movement laterally relative to the direction of movement permitted to the push pieces 7, 8.
  • the diameter of the roller 13 is such that it can only be accommodated between the wider inner portion of one push piece and the narrower outer portion of the other, but cannot be accommodated between the wider inner portions of both push pieces.
  • the roller 13 serves to retain the push piece 8 depressed against the action of its spring 12, due to its contact with the shoulder 10 and the side of the housing 6 through which the outer end portions 7a, 8a of the push pieces extend.
  • the action of the spring 12 will cause the shoulder 10 to urge the roller 13 laterally into a position over the shoulder 9, and thereby release the push piece 8.
  • three parallel push pieces 7, 8, 14 may be arranged in triangular relationship within the housing, and the catch member may be in the form of a ball 13a constrained for lateral movement between the push pieces, and arranged to hold only one piece depressed at any one time.
  • the outer end portions 7a, 8a of the push pieces 7, 8 extend through the side of the housing 6 remote from the spigot 3, and the inner end portions 7b, 8b of these push pieces are enlarged to define annular and inclined shoulders 9, 10 between the inner and outer end portions.
  • the outer end portion (not shown) of the push piece 14 also extends through the last mentioned side of the housing 6, and the inner end portion 14b of this push piece is also enlarged to define an annular and inclined shoulder (not shown) similar to those of the other push pieces 7, 8.
  • the shoulders of the three pieces are provided at different distances from their inner ends respectively three alternative limit positions for the abutment member are provided according to which of the pieces is held in the depressed position.
  • This modification may be employed where the engine is required to run on three alternative kinds of fuel, but alternatively the additional push piece 14 may provide a limit position in which a greater quantity of -fuel than that permitted by either of the push pieces 7, 8 is fed to the engine to facilitate starting.
  • each push piece will bear indicia indicating the kind of fuel for which the pump is adjusted when the piece is held depressed, and it is thus a simple matter 3 to 1adapt the engine for the kind of fuel most readily availab e.
  • the abutment member may be omitted, and one end of the regulating rod may be arranged to slide within the spigot so as to bear directly against the appropriate push piece when it is moved to its maximum fuel supply position.
  • a stop for the fuel regulating rod of a liquid fuel pump of the kind specified comprising in combination a housing, at least two spaced and parallel push pieces having outer end portions extending through one side of said housing, enlarged inner end portions slidably mounted within said housing, and inclined shoulders disposed between said inner and outer end portions at different distances respectively from the inner ends of the corresponding push pieces, compression springs situated within said housing and acting on said push pieces to oppose depression thereof, and a catch member of circular cross section situated within said housing between and in peripheral contact with the outer end portion of one of the push pieces which occupies a depressed position, and the inner end portion of the other push piece which occupies its outermost position, said catch member being also in peripheral contact with the side of said housing through which the outer end portions of said push pieces extend, and with the shoulder on the depressed push piece, to prevent the latter from moving outwardly until the other push piece is subsequently depressed sufiiciently to permit lateral movement of said catch member, whereupon the previously depressed push piece is moved to its outer
  • a stop for the fuel regulating rod of a liquid fuel pump of the kind specified comprising in combination a housing, three spaced and parallel push pieces having outer end portions extending through one side of said housing, enlarged inner end portions slidably mounted within said housing, and inclined shoulders disposed between said inner and outer end portions at difierent distances respectively from the inner ends of the corresponding push pieces, compression springs situated within said housing and acting on said push pieces to oppose depression thereof, and a catch member in the form of a ball situated within said housing between and in contact with the outer end portion of one of the push pieces which occupies a depressed position, and the inner end portions of the other push pieces which occupy their outermost positions, said catch member being also in contact with the side of said housing through which the outer end portions of said push pieces extend, and with the shoulder on the depressed push piece, to prevent the latter from moving outwardly until either of the other push pieces is subsequently depressed sufficiently to permit lateral movement of said catch member, whereupon the previously depressed push piece is moved to its outermost position by

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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)
  • Output Control And Ontrol Of Special Type Engine (AREA)
US29062A 1959-05-19 1960-05-13 Control for liquid fuel pumps for compression ignition engines Expired - Lifetime US2995951A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB16917/59A GB879043A (en) 1959-05-19 1959-05-19 Liquid fuel injection pumps for compression ignition engines

Publications (1)

Publication Number Publication Date
US2995951A true US2995951A (en) 1961-08-15

Family

ID=10086009

Family Applications (1)

Application Number Title Priority Date Filing Date
US29062A Expired - Lifetime US2995951A (en) 1959-05-19 1960-05-13 Control for liquid fuel pumps for compression ignition engines

Country Status (5)

Country Link
US (1) US2995951A (fr)
DE (1) DE1158755B (fr)
ES (1) ES258333A1 (fr)
FR (1) FR1256997A (fr)
GB (1) GB879043A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3242759A (en) * 1963-06-28 1966-03-29 Zahnradfabrik Friedrichshafen Shifting arrangement for change speed gears of motor vehicles
US3312122A (en) * 1964-05-25 1967-04-04 Westinghouse Electric Corp Mechanical interlock
US3346232A (en) * 1964-02-24 1967-10-10 Crawford Fitting Co Push button fluid valve
US3462284A (en) * 1966-11-16 1969-08-19 Gen Mills Inc Pressure sensitive adhesive
US3779097A (en) * 1971-05-21 1973-12-18 Daimler Benz Ag Mechanism for locking shifting members in change-speed transmissions

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2716901A (en) * 1950-12-30 1955-09-06 Cav Ltd Control device for fuel pumps
US2729986A (en) * 1951-10-17 1956-01-10 Olympia Werke Ag Adjustable stop mechanism
US2887898A (en) * 1956-07-12 1959-05-26 Ford Motor Co Transmission shift control
US2932213A (en) * 1956-01-31 1960-04-12 Shakespeare Products Co Push button actuating mechanism

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH291611A (de) * 1950-03-23 1953-06-30 Gmbh Robert Bosch Einspritzpumpe für Brennkraftmaschinen.
CH297951A (de) * 1950-12-30 1954-04-15 Cav Ltd Brennstoffeinspritzpumpe für Brennkraftmaschinen.
GB804587A (en) * 1956-05-02 1958-11-19 Cav Ltd Control means for liquid fuel injection pumps for internal combustion engines
DE1049153B (de) * 1956-06-21 1959-01-22 Kugelfischer G Schaefer & Co Einrichtung zur Wegbegrenzung fuer das Foerdermengenverstellglied der Kraftstoffeinspritzpumpe von Brennkraftmaschinen
DE1020487B (de) * 1956-06-29 1957-12-05 Kloeckner Humboldt Deutz Ag Einspritzbrennkraftmaschine fuer wahlweisen Betrieb mit verschiedenen Kraftstoffen unterschiedlichen spezifischen Gewichtes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2716901A (en) * 1950-12-30 1955-09-06 Cav Ltd Control device for fuel pumps
US2729986A (en) * 1951-10-17 1956-01-10 Olympia Werke Ag Adjustable stop mechanism
US2932213A (en) * 1956-01-31 1960-04-12 Shakespeare Products Co Push button actuating mechanism
US2887898A (en) * 1956-07-12 1959-05-26 Ford Motor Co Transmission shift control

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3242759A (en) * 1963-06-28 1966-03-29 Zahnradfabrik Friedrichshafen Shifting arrangement for change speed gears of motor vehicles
US3346232A (en) * 1964-02-24 1967-10-10 Crawford Fitting Co Push button fluid valve
US3312122A (en) * 1964-05-25 1967-04-04 Westinghouse Electric Corp Mechanical interlock
US3462284A (en) * 1966-11-16 1969-08-19 Gen Mills Inc Pressure sensitive adhesive
US3779097A (en) * 1971-05-21 1973-12-18 Daimler Benz Ag Mechanism for locking shifting members in change-speed transmissions

Also Published As

Publication number Publication date
DE1158755B (de) 1963-12-05
GB879043A (en) 1961-10-04
FR1256997A (fr) 1961-03-24
ES258333A1 (es) 1960-10-16

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