ES369593A1 - Fuel injection valves for internal combustion engines - Google Patents

Fuel injection valves for internal combustion engines

Info

Publication number
ES369593A1
ES369593A1 ES369593A ES369593A ES369593A1 ES 369593 A1 ES369593 A1 ES 369593A1 ES 369593 A ES369593 A ES 369593A ES 369593 A ES369593 A ES 369593A ES 369593 A1 ES369593 A1 ES 369593A1
Authority
ES
Spain
Prior art keywords
fuel
valve
valve needle
seat
fuel chamber
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
ES369593A
Other languages
Spanish (es)
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.)
Sulzer AG
Original Assignee
Sulzer AG
Sulzer Freres SA
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 Sulzer AG, Sulzer Freres SA filed Critical Sulzer AG
Publication of ES369593A1 publication Critical patent/ES369593A1/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M47/00Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027Electrically actuated valves draining the chamber to release the closing pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

An I.C. engine fuel injection valve comprises a valve needle 103, Fig. 3, guided at 34c in a housing 10a and co-operating with a valve seat 32a in the housing, the end of the valve needle remote from the seat being a greater diameter than the seat a forward fuel chamber 115 connected via ducts 114, 15 to a fuel line in which a constant pressure of 500 to 1000 atmospheres or more is maintained by a fuel pump and a spool valve 100 having a control edge 111 co-operating with a control edge 112 to allow fuel to enter a rear fuel chamber 116 from the duct 15. When a solenoid (not shown) is energized to cause a core 23 to attract the disc-like end 102 of the spool valve 100 and thereby lift the spool valve, the control edges 111, 112 block the flow of fuel from the duct 15 to the rear fuel chamber 116, and at the same time a conical end 106 of the spool valve is lifted from a seat 105 to allow fuel to flow from the rear fuel chamber via ducts 107, 108, 104 to the engine cylinder. The resultant fall in pressure above the upper end of the valve needle 103 allows the fuel pressure in the forward fuel chamber 115 to raise the valve needle from the seat 32a to permit fuel to flow via the ducts 15, 114 and the forward fuel chamber into the engine cylinder. The rapid movement of the valve needle 103 is cushioned by a stop ring 117. In another embodiment, Figs. 1 and 2 (not shown), the spool valve (26) slides within a bore (40) in the valve needle (35), the flow of fuel into the rear fuel chamber (54) being controlled by a control edge (48) on the spool valve co-operating with a control edge (46) formed within the valve needle. The stop ring (52) for cushioning the rapid upward movement of the valve needle (35) may be replaced by a stick of belleville washers (120), Fig. 4 (not shown).
ES369593A 1968-07-31 1969-07-16 Fuel injection valves for internal combustion engines Expired ES369593A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1152668A CH494346A (en) 1968-07-31 1968-07-31 Electromagnetically controlled fuel injection valve of a reciprocating internal combustion engine

Publications (1)

Publication Number Publication Date
ES369593A1 true ES369593A1 (en) 1971-06-01

Family

ID=4374374

Family Applications (1)

Application Number Title Priority Date Filing Date
ES369593A Expired ES369593A1 (en) 1968-07-31 1969-07-16 Fuel injection valves for internal combustion engines

Country Status (6)

Country Link
CH (1) CH494346A (en)
DE (1) DE1751830B1 (en)
ES (1) ES369593A1 (en)
FR (1) FR2014036A1 (en)
GB (1) GB1219694A (en)
NL (1) NL6811856A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2914966C2 (en) * 1979-04-12 1986-12-11 Institut für Motorenbau Prof. Huber e.V., 8000 München Injection device for an internal combustion engine
IT212431Z2 (en) * 1987-08-25 1989-07-04 Weber Srl THE ELECTROMAGNETIC CONTROL FOR FUEL INJECTION VALVE DIESEL CYCLE ENGINES
DE3855969T2 (en) * 1987-12-02 1998-03-05 Ganser Hydromag Electromagnetically actuated device for quickly switching an electro-hydraulically operated fuel injector
DE4340305C2 (en) * 1993-11-26 1998-02-19 Daimler Benz Ag Fuel injection nozzle for an internal combustion engine
DE4404050C1 (en) * 1994-02-09 1994-12-01 Daimler Benz Ag Injector with solenoid-valve control for an internal combustion engine
DE19744518A1 (en) * 1997-10-09 1999-04-15 Bosch Gmbh Robert Fuel injection valve for internal combustion engine
DE10132450B4 (en) * 2001-07-04 2010-02-11 Robert Bosch Gmbh Fuel injection valve for internal combustion engines
CN113250876B (en) * 2021-06-18 2022-04-26 中国北方发动机研究所(天津) Slide valve type common rail oil sprayer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1902197A (en) * 1930-10-20 1933-03-21 Guiberson Diesel Engine Compan Fuel injector for engines
DE711940C (en) * 1938-06-25 1941-10-09 Rudolf L Orange Dipl Ing Automatic needle nozzle
CH434875A (en) * 1966-06-21 1967-04-30 Huber Robert Fuel injection valve with electromagnetic actuation

Also Published As

Publication number Publication date
CH494346A (en) 1970-07-31
NL6811856A (en) 1970-02-03
FR2014036A1 (en) 1970-04-10
GB1219694A (en) 1971-01-20
DE1751830B1 (en) 1969-12-04

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