US3552219A - Fuel injection pump for internal combustion engines having a plurality of combustion chambers - Google Patents

Fuel injection pump for internal combustion engines having a plurality of combustion chambers Download PDF

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Publication number
US3552219A
US3552219A US817414A US3552219DA US3552219A US 3552219 A US3552219 A US 3552219A US 817414 A US817414 A US 817414A US 3552219D A US3552219D A US 3552219DA US 3552219 A US3552219 A US 3552219A
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US
United States
Prior art keywords
prismatic shaft
pushrod
fuel injection
axis
prismatic
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
US817414A
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English (en)
Inventor
Josef Berg
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz AG
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 Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Application granted granted Critical
Publication of US3552219A publication Critical patent/US3552219A/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
    • 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
    • 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
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/102—Mechanical drive, e.g. tappets or cams
    • 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
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/30—Varying fuel delivery in quantity or timing with variable-length-stroke pistons
    • 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
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18296—Cam and slide
    • 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
    • Y10T74/21—Elements
    • Y10T74/2101—Cams
    • Y10T74/2107—Follower

Definitions

  • a fuel injection pump for internal combustion engines in which a reciprocable pushrod hasrotatably adjustably mounted therein a prismatic shaft with a plurality of substantially plane sides differently spaced from the axis of rotation of said prismatic shaft means, said prismatic shaft means having its axis of rotation extending substantially perpendicularly with regard to the reciprocatory movement of the injection plunger resting on any selected substantialy plane side of said prismatic shaft means.
  • an object of the present invention to provide a fuel injection pump for internal combusion engines with a plurality of combustion chambers, which by the employment of simple means will permit a change in the idling strike of the pump piston while requiring a small opening only in the pump housing.
  • FIG. 1 is a cross section through a fuel injection pump according to the invention.
  • FIG. 2 is a cross section through a portion of the .arrangement of FIG. 1, said section being taken along the line 11-11 of FIG. 1.
  • FIG. 3 is a sectional view similar to FIG 2, but showing a cam with a spiral contour.
  • the fuel injection pump according to the present invention is characterized primarily by a prismatic shaft which is rotatably arranged in the pushrod so as to be able to rotate in a direction transverse to the direction of movement of said pushrod, the sides of said prismatic shaft being differently spaced from the axis of rotation of said prismatic shaft while serving to support the pump piston.
  • the fine degree of adjustment is determined by the number of sides of the prismatic shaft.
  • both ends of the prismatic shaft have circular cylindrical bearing flanges which on all sides radially protrude beyond the circumference of the prismatic shaft.
  • the arrangement shown therein comprises a pump piston 1 which is adapted to be driven by a cam 2 through the intervention of a pushrod 3.
  • the pushrod 3 has associated therewith a wheel 4 which is adapted to roll on the circumference of. the cam 2.
  • a prismatic shaft 5 Arranged in the pushrod 3 is a prismatic shaft 5 with circular cylindrical bearing flanges 6, said shaft 5 being rotatable about an axis extending transverse to the direction of movement of said pushrod 3.
  • the end face 7 of the pump piston 1 rests on one of the sides 12 of said prismatic shaft 5 while a spring 8 continously urges the end face 7 into and maintains the same in operative engagement with the respective side 12 of shaft 5 and through the latter maintains roller or wheel 4 of pushrod 3 in engagement with cam 2. More specifically, the spring 8 acts upon a collar 9 of the pump piston 1 and on the other hand rests on a guiding member 10 in the pump housing 11.
  • the prismatic shaft 5 has six sides 12 which are differently spaced from the axis of rotation 13. These differences are so selected that when the prismatic shaft is rotated, a uniform adjustment of the ignition pressure is obtained. On the other hand, those points of the sides 12 which are closest to the axis of 3 rotation 13 are located on a spiral not shown in the drawing.
  • a hollow bolt 14 which is located in the pump housing in axis parallel relationship to shaft 5.
  • This bolt 14 is adapted in the upper position of the pushrod 3 to move with its end 15 into a recess 16 after bolt 14 has been rotated by 180 from the position shown in FIG. 1. In this position, the said bolt 14 is held by a spring 17.
  • the bolt 14' is retracted against the thrust of spring 17 and is turned back to its FIG. 1 position, its stud 18 rests against a collar 19 of a connecting flange 20.
  • the bore 21 of the hollow bolt 14 is closed by a stopper 22.
  • the hollow bolt 14 is moved into engagement with recess 16 and by means of a Wrench (not shown) introduced through bore 21 into a corresponding recess 23 in the end face of the prismatic shaft 5, shaft 5 is turned and brought into the desired position.
  • a Wrench (not shown) introduced through bore 21 into a corresponding recess 23 in the end face of the prismatic shaft 5, shaft 5 is turned and brought into the desired position.
  • the fuel is during the injection by means of a pressure valve 25 and a pressure bore 26 pressed into the fuel pressure line (not shown in the drawing).
  • the present invention is, by no means, limited to the particular structure shown in the drawing but also comprises any modifications within the scope of the appended claims. It is furthermore to be noted that the present invention is advantageous not only with internal combustion engines having a plurality of cylinders with a corresponding number of reciprocable pistons, but is also highly advantageous with all other internal combustion engines having a plurality of combustion chambers, as for instance rotary piston internal combustion machines, in which an adaptation of the ignition pressures is required.
  • a fuel injection pump for internal combustion engines which includes: reciprocable fuel injection plunger means, reciprocable hollow pushrod means operable to convey actuating pressure to said plunger means, cam shaft means operable to actuate said pushrod means, rotatable prismatic shaft means located within said pushrod means and having its axis of rotation extending transverse to the direction of reciprocation of said pushrod means, said prismatic shaft means having a plurality of substantially plane areas forming a plurality of sides respectively differently spaced from the axis of rotation of said shaft means, each of said sides being adapted selectively in conformity with the rotational setting of said shaft means to be moved underneath said plunger means for supporting the same.
  • a pump according to claim 1 in which the vertical projection of those points of said sides of said prismatic shaft which have the shortest distance from the axis of rotation of said shaft has the said points located along a spiral, and in which said points are successively spaced from said axis of rotation in such a way that a uniform ignition pressure adjustment is obtained when said plunger means is successively supported by said sides of said prismatic shaft means.
  • a pump according to claim 1 in which both ends of said prismatic shaft means are provided with cylindrical bearing flanges radially protruding beyond the substantially plane sides of said prismatic shaft means and rotatably journalled in said pushrod means.
  • a pump according to claim 1 which includes hollow bolt means extending substantially parallel to the axis of rotation of said prismatic shaft means and being located within the region of reciprocatory movement of said prismatic shaft means within said pushrod means, said hollow bolt means being adapted in one end position of said pushrod means to be substantially axially aligned with said prismatic shaft means to permit the insertion of a tool through said hollow bolt means for turning said prismatic shaft means to set the desired substantially plane side thereof for engagement with said plunger means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
US817414A 1968-04-27 1969-04-18 Fuel injection pump for internal combustion engines having a plurality of combustion chambers Expired - Lifetime US3552219A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681751477 DE1751477A1 (de) 1968-04-27 1968-04-27 Brennstoffeinspritzpumpe fuer Brennkraftmaschinen mit mehreren Brennraeumen

Publications (1)

Publication Number Publication Date
US3552219A true US3552219A (en) 1971-01-05

Family

ID=5692319

Family Applications (1)

Application Number Title Priority Date Filing Date
US817414A Expired - Lifetime US3552219A (en) 1968-04-27 1969-04-18 Fuel injection pump for internal combustion engines having a plurality of combustion chambers

Country Status (5)

Country Link
US (1) US3552219A (enrdf_load_stackoverflow)
AT (1) AT293104B (enrdf_load_stackoverflow)
DE (1) DE1751477A1 (enrdf_load_stackoverflow)
FR (1) FR2007081A1 (enrdf_load_stackoverflow)
GB (1) GB1257351A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3702577A (en) * 1970-01-10 1972-11-14 Bosch Gmbh Robert Drive shaft positioning device associated with fuel injection pumps
US4167896A (en) * 1977-08-11 1979-09-18 Gustafson, Inc. Pump for auger treater
DE3102801A1 (de) * 1980-01-29 1981-11-19 Lucas Industries Ltd., Birmingham, West Midlands "kraftstoffeinspritzpumpe"
US4800856A (en) * 1985-03-11 1989-01-31 Outboard Marine Corporation Abrasion resistant roller apparatus for internal combustion engines
DE4003469A1 (de) * 1990-02-06 1991-08-08 Kloeckner Humboldt Deutz Ag Foerderbeginneinstellung von einzeleinspritzpumpen bei der motorenmontage von mehrzylindermotoren
US20120294741A1 (en) * 2010-01-27 2012-11-22 Masashi Nishimura Pump tappet

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3702577A (en) * 1970-01-10 1972-11-14 Bosch Gmbh Robert Drive shaft positioning device associated with fuel injection pumps
US4167896A (en) * 1977-08-11 1979-09-18 Gustafson, Inc. Pump for auger treater
DE3102801A1 (de) * 1980-01-29 1981-11-19 Lucas Industries Ltd., Birmingham, West Midlands "kraftstoffeinspritzpumpe"
US4800856A (en) * 1985-03-11 1989-01-31 Outboard Marine Corporation Abrasion resistant roller apparatus for internal combustion engines
DE4003469A1 (de) * 1990-02-06 1991-08-08 Kloeckner Humboldt Deutz Ag Foerderbeginneinstellung von einzeleinspritzpumpen bei der motorenmontage von mehrzylindermotoren
DE4003469C2 (de) * 1990-02-06 1998-04-16 Deutz Ag Förderbeginn-Einstellung von Einzeleinspritzpumpen bei der Motorenmontage von Hubkolben-Brennkraftmaschinen mit mehreren Zylindern
US20120294741A1 (en) * 2010-01-27 2012-11-22 Masashi Nishimura Pump tappet

Also Published As

Publication number Publication date
AT293104B (de) 1971-09-27
FR2007081A1 (enrdf_load_stackoverflow) 1970-01-02
GB1257351A (enrdf_load_stackoverflow) 1971-12-15
DE1751477A1 (de) 1970-12-10

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