US3620456A - Fuel injection nozzle for internal combustion engines - Google Patents

Fuel injection nozzle for internal combustion engines Download PDF

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Publication number
US3620456A
US3620456A US55173A US3620456DA US3620456A US 3620456 A US3620456 A US 3620456A US 55173 A US55173 A US 55173A US 3620456D A US3620456D A US 3620456DA US 3620456 A US3620456 A US 3620456A
Authority
US
United States
Prior art keywords
spring
nozzle
housing
dish
needle
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
US55173A
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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 US3620456A publication Critical patent/US3620456A/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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift

Definitions

  • ABSTRACT An injection nozzle for fuel injection engines with a nozzle needle acted upon by a plurality of springs, in which the resultant of the spring forces is conveyed through a universally journaled spring dish upon the nozzle needle the axis of which is in substantially axial alignment with said resultant.
  • the present invention relates to a fuel injection nozzle for fuel injection combustion engines with a spring-loaded nozzle needle.
  • a fuel injection nozzle for fuel injection combustion engines with a spring-loaded nozzle needle.
  • the pressure spring acting upon the nozzle needle will with heretofore known nozzles require a receiving chamber of relatively great diameter and length in the nozzle holder. A further increase in the diameter becomes necessary in view of the necessary thickness of the material around the fuel passages leading past the spring chamber to said nozzle.
  • F l0. 1 illustrates a longitudinal section through an injection nozzle according to the invention.
  • FIG. 2 is a cross section through FIG. 1 taken along the line ll-ll of FIG. 1.
  • the injection nozzle according to the present invention is characterized primarily in that the springs are arranged adjacent to each other about the common center of the forces and convey the forces through one dish spring to the nozzle needle the axis of which passes approximately through the center point of the forces.
  • the arrangement shown therein comprises a nozzle body 1 which, by means of a screw cap or box nut 2, is held in the injection nozzle housing 3.
  • the nozzle bores 4 of the nozzle body are closed by a nozzle needle 5, which latter is under the load of a plurality of springs 6 which are arranged adjacent to each other about the common center of forces.
  • the spring forces are through a spring dish 7 conveyed to the free end 9 of the nozzle needle 5.
  • the nozzle needle 5 is, by means of its cylindrical part 10, axially guided in the nozzle body 1.
  • the springs 6 are surrounded by housing 11, the inner contour of which, is adapted to the outer contour of the springs 6 and within the region of the greatest wall thickness of the housing 11 has a fuel passage 12.
  • Passage l2 communicates through a passage 13 with an annular space 14 which surrounds the nozzle needle 5.
  • a fuel passage 12 and the passages 13 it is also possible to provide a plurality of fuel passages which are evenly distributed over the circumference.
  • An injection noule for fuel injection internal combustion engines which includes: nozzle-housing means having conduit means therein for connection to a fuel supply, nozzle body means connected to said nozzle-housing means and having passage means therethrough and also having an axial bore therethrough provided with nozzle opening means, nozzle needle means axially movable in said axial bore for controlling said nozzle opening means, said nozzle body having annular fuel-receiving chamber means surrounding said needle means and communicating with said nozzle-opening means, springhousing means arranged within said nozzle-housing means and having conduit means therein establishing fuel fluid communication between said conduit means in said nozzle-housing means and said passage means in said nozzle body means, bearing means supported by said nozzle needle means and extending into said spring-housing means, spring dish means supported by said bearing means, and a plurality of spring means arranged within said spring-housing means and under preload having one end engaging said spring dish means, the resultant line of force of said plurality of spring means passing through said bearing means and being

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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)
US55173A 1969-07-23 1970-07-15 Fuel injection nozzle for internal combustion engines Expired - Lifetime US3620456A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691937419 DE1937419A1 (de) 1969-07-23 1969-07-23 Einspritzduese fuer Einspritzbrennkraftmaschinen

Publications (1)

Publication Number Publication Date
US3620456A true US3620456A (en) 1971-11-16

Family

ID=5740654

Family Applications (1)

Application Number Title Priority Date Filing Date
US55173A Expired - Lifetime US3620456A (en) 1969-07-23 1970-07-15 Fuel injection nozzle for internal combustion engines

Country Status (5)

Country Link
US (1) US3620456A (de)
AT (1) AT302733B (de)
DE (1) DE1937419A1 (de)
FR (1) FR2056461A5 (de)
GB (1) GB1271032A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3777984A (en) * 1972-01-20 1973-12-11 Mack Trucks Miniature fuel injection nozzle and holder assembly
US4546924A (en) * 1983-11-25 1985-10-15 Southwest Research Institute Fuel injector

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2226078A (en) * 1988-11-09 1990-06-20 Lucas Ind Plc C.i. engine fuel injection nozzle
DE102013206417A1 (de) * 2013-04-11 2014-10-16 Robert Bosch Gmbh Ventil zum Zumessen von Fluid

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1386832A (en) * 1920-02-28 1921-08-09 Columbus Oil Engine Company Fuel-injector for two-stroke high-compression motors
US2639193A (en) * 1947-02-05 1953-05-19 American Bosch Corp Fuel injection device
US3442451A (en) * 1967-06-14 1969-05-06 Gen Motors Corp Dual stage accumulator type fuel injector
US3511443A (en) * 1967-05-23 1970-05-12 Cav Ltd Liquid fuel injection nozzle units
US3521819A (en) * 1968-04-01 1970-07-28 Continental Oil Co Valved ejector

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1386832A (en) * 1920-02-28 1921-08-09 Columbus Oil Engine Company Fuel-injector for two-stroke high-compression motors
US2639193A (en) * 1947-02-05 1953-05-19 American Bosch Corp Fuel injection device
US3511443A (en) * 1967-05-23 1970-05-12 Cav Ltd Liquid fuel injection nozzle units
US3442451A (en) * 1967-06-14 1969-05-06 Gen Motors Corp Dual stage accumulator type fuel injector
US3521819A (en) * 1968-04-01 1970-07-28 Continental Oil Co Valved ejector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3777984A (en) * 1972-01-20 1973-12-11 Mack Trucks Miniature fuel injection nozzle and holder assembly
US4546924A (en) * 1983-11-25 1985-10-15 Southwest Research Institute Fuel injector

Also Published As

Publication number Publication date
DE1937419A1 (de) 1971-02-11
AT302733B (de) 1972-10-25
GB1271032A (en) 1972-04-19
FR2056461A5 (de) 1971-05-14

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