US3630454A - Liquid fuel injection nozzles - Google Patents

Liquid fuel injection nozzles Download PDF

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Publication number
US3630454A
US3630454A US27246A US3630454DA US3630454A US 3630454 A US3630454 A US 3630454A US 27246 A US27246 A US 27246A US 3630454D A US3630454D A US 3630454DA US 3630454 A US3630454 A US 3630454A
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US
United States
Prior art keywords
nozzle
axis
nozzle body
bore
liquid fuel
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
US27246A
Other languages
English (en)
Inventor
Dorian Farrar Mowbray
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 US3630454A publication Critical patent/US3630454A/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
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type

Definitions

  • liquid fuel injection nozzles of the kind comprising a cylindrical nozzle body to which at one end, is mounted a nozzle head including a slidable valve member which controls fuel flow through an orifice, the nozzle body including a bore which accommodates a spring acting upon the valve member, the nozzle body also having a drilling through which liquidfuel at high pressure can flow from an inlet to the orifice.
  • the object of the invention is to provide a nozzle in which this desideratum is achieved in a simple and convenient'form.
  • the axis of the bore is displaced from the axis of the body.
  • liquid fuel injection nozzle in accordance with the invention is shown in sectional side elevation in the accompanying drawing and with reference to the drawing there is provided a cylindrical nozzle body at one end of which is attached a nozzle head 11 also of cylindrical form.
  • the nozzle head is provided with an orifice 12 at its end remote from the body and slidable within the nozzle head is the valve member 13 which controls the flow of fuel through the orifice from a feed passage 14 disposed in the nozzle head.
  • a bore 15 which accommodates a coiled compression spring 16 which at one end bears against a spring abutment 17 mounted upon the valve member 17.
  • the other end of the spring is supported by an adjustable member 18 located within the bore 15.
  • the axis of the bore 15 is displaced from the axis of the nozzle body 10 and the axis of the valve member 13 is aligned with that of the bore l5.
  • a drilling 19 Formed in the nozzle body is a drilling 19 which at one end is in communication with an inlet union 20 and which at its other end registers with the aforesaid feed passage 14.
  • the drilling 19 is positioned in the nozzle body so that it lies on a diameter of the nozzle body and which extends through the axis of the bore. in this manner the wall thickness of the drilling is as large as possible and for a given wall thickness and diameter of bore, the diameter of the nozzle body can be made as small as possible.
  • the nozzle head 11 is secured to the body 10 by means of a capnut 21.
  • the head is of stepped form the axis of the narrower portion of which is offset relative to the axis of the wider portion thereof.
  • a locating peg or pegs (not shown) is provided to locate the body and head accurately relative to each other prior to and during the assembly of the nozzle.
  • a liquid fuel injection nozzle comprising a cylindrical nozzle body, a nozzle head attached at one end of the body, a slidable valve member located in the nozzle head for controlling fuel flow through an orifice formed in the nozzle head, a bore formed in the nozzle body, a spring located in said bore, a spring abutment mounted upon the valve member, a drilling formed in the nozzle body and through which liquid fuel at high pressure can flow from an inlet in the nozzle body to the orifice characterized in that the axis of the bore and the axis of movement of the valve member are ofi'set by an equal amount from the axis of the nozzle body and in that the nozzle head is of stepped form the narrower portion of the head being offset from the axis of the nozzle body by an amount equal to the amount by which the axis of movement of the valve member is offset from the axis of the nozzle body.

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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)
US27246A 1969-04-24 1970-04-10 Liquid fuel injection nozzles Expired - Lifetime US3630454A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB21010/69A GB1299372A (en) 1969-04-24 1969-04-24 Liquid fuel injection nozzles

Publications (1)

Publication Number Publication Date
US3630454A true US3630454A (en) 1971-12-28

Family

ID=10155664

Family Applications (1)

Application Number Title Priority Date Filing Date
US27246A Expired - Lifetime US3630454A (en) 1969-04-24 1970-04-10 Liquid fuel injection nozzles

Country Status (8)

Country Link
US (1) US3630454A (enExample)
JP (1) JPS5138012B1 (enExample)
BR (1) BR7018492D0 (enExample)
DE (1) DE2024733B2 (enExample)
ES (1) ES158099Y (enExample)
FR (1) FR2039432B1 (enExample)
GB (1) GB1299372A (enExample)
IL (1) IL34326A (enExample)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3477648A (en) * 1967-07-12 1969-11-11 Vernon D Roosa Fuel injection nozzle
US3499607A (en) * 1968-05-07 1970-03-10 Bendix Corp Fuel injection valve device
US3511443A (en) * 1967-05-23 1970-05-12 Cav Ltd Liquid fuel injection nozzle units

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1898751A (en) * 1930-03-04 1933-02-21 Swiss Locomotive & Machine Works Fuel-injection valve for internal-combustion engines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3511443A (en) * 1967-05-23 1970-05-12 Cav Ltd Liquid fuel injection nozzle units
US3477648A (en) * 1967-07-12 1969-11-11 Vernon D Roosa Fuel injection nozzle
US3499607A (en) * 1968-05-07 1970-03-10 Bendix Corp Fuel injection valve device

Also Published As

Publication number Publication date
ES158099U (es) 1970-07-01
IL34326A0 (en) 1970-06-17
BR7018492D0 (pt) 1973-05-31
ES158099Y (es) 1971-02-01
FR2039432B1 (enExample) 1976-02-06
GB1299372A (en) 1972-12-13
DE2024733A1 (de) 1970-11-26
DE2024733B2 (de) 1974-06-20
IL34326A (en) 1972-07-26
JPS5138012B1 (enExample) 1976-10-19
FR2039432A1 (enExample) 1971-01-15

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