US3465969A - Liquid fuel injection nozzles - Google Patents

Liquid fuel injection nozzles Download PDF

Info

Publication number
US3465969A
US3465969A US607931A US3465969DA US3465969A US 3465969 A US3465969 A US 3465969A US 607931 A US607931 A US 607931A US 3465969D A US3465969D A US 3465969DA US 3465969 A US3465969 A US 3465969A
Authority
US
United States
Prior art keywords
bore
valve member
fuel injection
liquid fuel
injection nozzles
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
US607931A
Other languages
English (en)
Inventor
Teodore Priede
Jan Wilkins
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 US3465969A publication Critical patent/US3465969A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

  • LIQUID FUEL INJECTION NOZZLES Filed Jan. 9, 1967 ,x 3 Sheets-Sheet 5 United States Patent Office Patented Sept. 9, 1969 3,465,969 LIQUID FUEL INJECTION NOZZLES Teodore Priede, Southampton, and Jan Wilkins, London, England, assignors to C.A.V. Limited, London, England Filed Jan. 9, 1967, Ser. No. 607,931 Claims priority, applicati??1 /Great Britain, Jan. 7, 1966,
  • the object of this invention is to provide such a nozzle in a form in which the emission of noise therefrom when in use, is minimized.
  • FIGURE l is a sectional side elevation of one example of a liquid fuel injection nozzle which may incorporate the invention and,
  • FIGURES 2, 3, 4, 5, 6 and 7 are views and an enlarged scale of part of the nozzle of FIGURE l and showing respectively various embodiments of the invention.
  • FIGURE l One example of a liquid fuel injection nozzle to which the invention may be applied is shown in FIGURE l and in which there is provided an elongated body part 10 which is adapted to be mounted within a bore formed in the cylinder head of a compression ignition engine. Mounted on one end of the body part is a cylindrical nozzle head 11, the free end of which in use, extends into a combustion space of the engine. Moreover, in the free end of the nozzle head is formed a fuel discharge orifice 12 and within the head is formed a cylindrical bore which contains a slidable valve member 13. Also formed in the nozzle head is a seating with which the valve member co-operates to prevent the iiow of fuel through the orifice.
  • Fuel is supplied to the orifice through passage 14 formed in the nozzle head and body part from a fuel supply pump and the arrangement is such that when fuel is supplied by the pump the valve member will be lifted from its seating to allow fuel to be discharged into the combustion space through the orifice.
  • the valve member is urged onto its seating by a coiled compression spring 15 which is accommodated in a chamber defined at the end of the body part remote from the nozzle head.
  • the spring acts upon the valve member through a push rod and this is constituted by a spring abutment 16 which is mounted upon a rod 17.
  • the rod 17 is provided with a blind bore 17a extending from the end of the rod remote from the abutment.
  • Within the bore 17a are three struts defined by three substantially equal lengths of piano wire 18 which bear against the end of the 4bore and upon an extended portion of the valve member 13.
  • the end of the bore 17a adjacent the -valve member is enlarged and the tip of said extended portion enters therein but does not contact any part of the rod.
  • the size of the bore in the rod is chosen to permit limited buckling of the wires under the applied load.
  • the bore 17a is constant in diameter throughout its length and the open end thereof is closed by a slidable plug 20. Furthermore, the end of he rod is rolled over to prevent the plug falling out.
  • the operation of this modification is as described.
  • the wires 18 are replaced by a large number of wires 19.
  • the lengths of wire are replaced by a plurality of Belleville washers 21 disposed Within the bore 17a in the rod 17 and which are slightly smaller in diameter than the bore.
  • the washers flatten out as the valve member moves against the action of the spring and in so doing, the edges thereof contact the wall of the bore to limit the deflection.
  • the bore i 17a is filled behind the plug 20, with an insert 22 of a hard synthetic resin material such for instance as nylon which can be compressed to a limited extent by a load applied thereto.
  • the bore 17a in the rod 17 accommodates a bar 23 of rectangular section.
  • the narrower edges of the bar are shaped in a manner complementary to the wall of the bore.
  • the opposite ends of the bar 23 are formed with integral plugs 24, 25 respectively.
  • the plug 24 is located at the inner end of the bore and is a tight fit while the plug 25 is a sliding fit in the bore.
  • the plug 25 is formed integrally with a cap 26 which engages over the reduced end of the valve member 13. In use, the bar is able to buckle a limited extent to provide the required resilience.
  • FIGURE 7 there is mounted within the bore 17a in the rod 17 a bar ⁇ 27 complementary in shape to the 4bore and which is a sliding fit therein. Moreover, the outer end of the bore 17a is of enlarged diameter and accommodates a plug 28 formed integrally with the bar 27. In this case the slight clearance between the bar 27 and the wall of the bore enables the bar to be compressed slightly under the applied load and thereby provides the required resilience.
  • the rate of the resilient member that is to say, the force required to compress the member for a unit deflection, be it constituted by wires, rods, spring Washers or a synthetic resin insert, is arranged to be high as compared with the rate defined in like manner, ofthe spring 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
US607931A 1966-01-07 1967-01-09 Liquid fuel injection nozzles Expired - Lifetime US3465969A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB791/66A GB1159721A (en) 1966-01-07 1966-01-07 Liquid Fuel Injection Nozzles for Internal Combustion Engines.

Publications (1)

Publication Number Publication Date
US3465969A true US3465969A (en) 1969-09-09

Family

ID=9710562

Family Applications (1)

Application Number Title Priority Date Filing Date
US607931A Expired - Lifetime US3465969A (en) 1966-01-07 1967-01-09 Liquid fuel injection nozzles

Country Status (4)

Country Link
US (1) US3465969A (fr)
ES (1) ES335842A1 (fr)
FR (1) FR1507503A (fr)
GB (1) GB1159721A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8200281A (nl) * 1982-01-26 1983-08-16 Stork Werkspoor Diesel Bv Vloeistof-inspuit inrichting met progressief veerbelaste afsluitnaald.
GB2336627A (en) * 1998-04-24 1999-10-27 Lucas Ind Plc Fuel injector with biassing spring in blind bore in valve needle

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1301719A (en) * 1918-04-08 1919-04-22 Charles E H Lloyd Spraying-nozzle for internal-combustion engines.
US1525156A (en) * 1922-05-02 1925-02-03 Teufl Franz Carl Fuel-injection valve for oil engines
US1755192A (en) * 1925-12-14 1930-04-22 Super Diesel Tractor Corp Atomizing valve
DE504483C (de) * 1930-08-04 Torkild Valdemar Hemmingsen Fluessigkeitsgesteuertes Brennstoffventil fuer luftlose Brennstoffeinspritzung
GB736794A (en) * 1952-05-13 1955-09-14 David William Edgar Kyle Improvements in liquid fuel injection equipment for internal combustion engines
US2750957A (en) * 1951-04-10 1956-06-19 Tavola Bruno Injection valve
CH329505A (de) * 1955-02-23 1958-04-30 Saurer Ag Adolph Verfahren zum Steuern des Durchflussquerschnittes von Einspritzdüsen für Brennkraftmaschinen und Einspritzdüse zur Durchführung des Verfahrens
GB808206A (en) * 1954-05-11 1959-01-28 Nylands Verksted Improvements in fuel injection systems for internal combustion engines
US2957631A (en) * 1957-03-14 1960-10-25 Acf Ind Inc Nozzle for fuel injector system
US3124305A (en) * 1961-06-12 1964-03-10 Fuel injection nozzle units
US3175771A (en) * 1961-11-04 1965-03-30 Breting Olivier Fuel injectors for internal combustion engines
US3342422A (en) * 1964-10-26 1967-09-19 Ricardo & Co Engineers Fuel injection apparatus for internal combustion engines

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE504483C (de) * 1930-08-04 Torkild Valdemar Hemmingsen Fluessigkeitsgesteuertes Brennstoffventil fuer luftlose Brennstoffeinspritzung
US1301719A (en) * 1918-04-08 1919-04-22 Charles E H Lloyd Spraying-nozzle for internal-combustion engines.
US1525156A (en) * 1922-05-02 1925-02-03 Teufl Franz Carl Fuel-injection valve for oil engines
US1755192A (en) * 1925-12-14 1930-04-22 Super Diesel Tractor Corp Atomizing valve
US2750957A (en) * 1951-04-10 1956-06-19 Tavola Bruno Injection valve
GB736794A (en) * 1952-05-13 1955-09-14 David William Edgar Kyle Improvements in liquid fuel injection equipment for internal combustion engines
GB808206A (en) * 1954-05-11 1959-01-28 Nylands Verksted Improvements in fuel injection systems for internal combustion engines
CH329505A (de) * 1955-02-23 1958-04-30 Saurer Ag Adolph Verfahren zum Steuern des Durchflussquerschnittes von Einspritzdüsen für Brennkraftmaschinen und Einspritzdüse zur Durchführung des Verfahrens
US2957631A (en) * 1957-03-14 1960-10-25 Acf Ind Inc Nozzle for fuel injector system
US3124305A (en) * 1961-06-12 1964-03-10 Fuel injection nozzle units
US3175771A (en) * 1961-11-04 1965-03-30 Breting Olivier Fuel injectors for internal combustion engines
US3342422A (en) * 1964-10-26 1967-09-19 Ricardo & Co Engineers Fuel injection apparatus for internal combustion engines

Also Published As

Publication number Publication date
GB1159721A (en) 1969-07-30
FR1507503A (fr) 1967-12-29
ES335842A1 (es) 1968-05-01

Similar Documents

Publication Publication Date Title
CA1047864A (fr) Injecteur de carburant a valve tiroir
US4692102A (en) Fuel injection pump for internal combustion engines
US1893457A (en) Spraying and injecting device for internal combustion engines employing liquid fuel
US4181144A (en) Hydraulically limited fuel injection nozzle
KR900002900A (ko) 휴대용 동력공구
GB1183156A (en) Improvements in or relating to Fuel Injection Valves
US3057560A (en) Nozzle construction
US3398936A (en) Fuel injection pintle
US3718283A (en) Fuel injection nozzle units
US2588485A (en) Liquid fuel burner nozzle
US3910503A (en) Fuel injection nozzles
US2407915A (en) Injection nozzle
US3465969A (en) Liquid fuel injection nozzles
US3831863A (en) Fuel injection nozzles
US3425635A (en) Fuel injection nozzle
US3531052A (en) Fuel injector for internal combustion engines
US2556369A (en) Accumulator type injection nozzle
US4413780A (en) Fuel injection nozzles
US2962227A (en) Fuel injection nozzles
US1162789A (en) Injector.
US2733960A (en) Barfod
US3829014A (en) Fuel injector having self-cleaning filter
GB2114658A (en) Fuel injection nozzle assembly
US4848668A (en) Fuel injection nozzles
US1525156A (en) Fuel-injection valve for oil engines