GB997966A - Improvements in or relating to fuel injectors - Google Patents

Improvements in or relating to fuel injectors

Info

Publication number
GB997966A
GB997966A GB35500/61A GB3550061A GB997966A GB 997966 A GB997966 A GB 997966A GB 35500/61 A GB35500/61 A GB 35500/61A GB 3550061 A GB3550061 A GB 3550061A GB 997966 A GB997966 A GB 997966A
Authority
GB
United Kingdom
Prior art keywords
fuel
pressure
line
piston
pump
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
Application number
GB35500/61A
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.)
Navistar Inc
Original Assignee
International Harverster Corp
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 International Harverster Corp filed Critical International Harverster Corp
Publication of GB997966A publication Critical patent/GB997966A/en
Expired legal-status Critical Current

Links

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
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • 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
    • F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
    • F02M41/02—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor being spaced from pumping elements
    • F02M41/06—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor being spaced from pumping elements the distributor rotating
    • 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • 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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/025—Injectors structurally combined with fuel-injection pumps characterised by the pump drive hydraulic, e.g. with pressure amplification
    • 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
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0028—Valves characterised by the valve actuating means hydraulic
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/04—Injectors 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
    • F02M2700/00—Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
    • F02M2700/07—Nozzles and injectors with controllable fuel supply
    • F02M2700/074—Injection valve actuated by fuel pressure for pressurised fuel supply
    • 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
    • F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
    • F02M41/08—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined
    • F02M41/10—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor
    • 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

Abstract

997,966. Fuel injectors, reciprocating pumps. INTERNATIONAL HARVESTER CO. Oct. 2, 1961 [Dec. 1, 1960], No. 35500/61. Headings F1A and F1B. A fuel injector assembly comprises a hydraulically operable piston 43, Fig. 3, which delivers fuel at high pressure from a fuel ejection metering chamber 35 to an injector nozzle 74 and valve means operable by metering fluid pressure to admit a low pressure metered quantity of fuel to the ejection chamber and with release of metering fluid pressure to admit high pressure fluid to a chamber 37 to displace piston 43. Fuel injection system: As shown in Fig. 2 a primary pump 7 supplies fuel under pressure to a rotary-type metering pump 8. A by-pass line 13 including a pressure operated check valve 14 returns fuel at excess delivery pressure. During metering delivery periods fuel passes through line 18 to each injector 16 whilst during spill periods fuel passes through line 18a to the tank 3. A low-pressure fuel line 19 connected to the inlet line 12 of metering pump 8 and by-pass line 13 communicates through conduits 20 with each fuel injector 16. A high pressure pump 11 supplies each injector through highpressure inlet lines 22. Fuel injector operation: During spill periods pilot valve 28 is moved to stop 80 by spring 50 and residual fuel pressure in chamber 37 whilst servo piston 43 also moves to maintain the same relative position. During the metering stroke of pump 8 fuel is delivered through line 18 and passage 26 to the left-hand end of pilot valve 28 thereby displacing it to the right to a charge position opening ports A and C simultaneously and placing low-pressure line 20 in communication with annulus 35 and cavity 37a. With ports A and C open the high pressure in cavity 37a drops and piston 43, moves with the pilot valve 28 under the influence of tension spring 44, fuel being displaced from cavity 37a and transferred through port C into line 20 and through port A into annulus 35 in a quantity proportional to that metered by pump 8. When displacement of the pilot valve ceases, the piston 43 closes ports A and C and fuel trapped in cavity 37a prevents further movement of the piston 43. When pump 8 commences to spill, the pressure drop causes the valve piston to move to the left closing ports A and C and opening port B. Fluid from high-pressure line 22 and passage 32 is admitted through the passageway 54 into the cavity 37a where it moves pilot valve 28 rapidly to its stop 80 and causes piston 43 to displace fuel from annulus 35 through passages 57, 59, 76 into the nozzle chamber 70 urging nozzle plunger 66 against spring 63 and unseating valve 68 for injection. By varying the injection pressure the time of injection can be varied accordingly independently of the engine speed.
GB35500/61A 1960-12-01 1961-10-02 Improvements in or relating to fuel injectors Expired GB997966A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US72952A US3083912A (en) 1960-12-01 1960-12-01 Fuel injector

Publications (1)

Publication Number Publication Date
GB997966A true GB997966A (en) 1965-07-14

Family

ID=22110774

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35500/61A Expired GB997966A (en) 1960-12-01 1961-10-02 Improvements in or relating to fuel injectors

Country Status (2)

Country Link
US (1) US3083912A (en)
GB (1) GB997966A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH443788A (en) * 1965-09-14 1967-09-15 Sulzer Ag Fuel injection device of a reciprocating internal combustion engine
US4402457A (en) * 1981-07-31 1983-09-06 The Bendix Corporation Fuel injector with abrupt and stable termination
US4405082A (en) * 1981-07-31 1983-09-20 The Bendix Corporation Low leakage fuel injector
US4410137A (en) * 1981-12-31 1983-10-18 Cummins Engine Company, Inc. Miniaturized unit fuel injector employing hydraulically controlled timing
US4420116A (en) * 1981-12-31 1983-12-13 Cummins Engine Company, Inc. Unit injector employing hydraulically controlled timing and fuel shut off
US4410138A (en) * 1981-12-31 1983-10-18 Cummins Engine Company, Inc. Unit injector cooled by timing control fluid
US4505244A (en) * 1982-05-06 1985-03-19 Cummins Engine Company, Inc. Fuel injection system
DE3342942A1 (en) * 1983-11-26 1985-06-05 Cummins Engine Co., Inc., Columbus, Ind. Fuel injection unit with timing and delivery adjustment controlled independently of one another
JPS60147567A (en) * 1983-12-29 1985-08-03 カミンズ　エンジン　カンパニイ　インコ−ポレイテツド Unit fuel injector having independent control timing and metering function
US5033442A (en) * 1989-01-19 1991-07-23 Cummins Engine Company, Inc. Fuel injector with multiple variable timing
US5713520A (en) * 1995-11-27 1998-02-03 Caterpillar Inc. Fast spill device for abruptly ending injection in a hydraulically actuated fuel injector
US7743754B2 (en) * 2006-03-31 2010-06-29 Transonic Combustion, Inc. Heated catalyzed fuel injector for injection ignition engines

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1934296A (en) * 1929-05-22 1933-11-07 Packard Motor Car Co Fuel injection unit
US2656854A (en) * 1949-12-30 1953-10-27 Oilgear Co Pilot operated free return resistance valve
US2690356A (en) * 1952-05-23 1954-09-28 American Locomotive Co Fuel injection apparatus
US2793077A (en) * 1955-04-06 1957-05-21 Cooper Bessemer Corp Fuel injection devices for internal combustion engines
US2856023A (en) * 1956-02-01 1958-10-14 Farval Corp Progressive metering valve and fluid pressure system utilizing same

Also Published As

Publication number Publication date
US3083912A (en) 1963-04-02

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