JPS5569754A - Fuel ejection valve - Google Patents

Fuel ejection valve

Info

Publication number
JPS5569754A
JPS5569754A JP14285578A JP14285578A JPS5569754A JP S5569754 A JPS5569754 A JP S5569754A JP 14285578 A JP14285578 A JP 14285578A JP 14285578 A JP14285578 A JP 14285578A JP S5569754 A JPS5569754 A JP S5569754A
Authority
JP
Japan
Prior art keywords
small
needle valve
fuel
pressure
oil 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.)
Pending
Application number
JP14285578A
Other languages
Japanese (ja)
Inventor
Noboru Matsumura
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP14285578A priority Critical patent/JPS5569754A/en
Publication of JPS5569754A publication Critical patent/JPS5569754A/en
Pending 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
    • 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/08—Injectors peculiar thereto
    • F02M45/086—Having more than one injection-valve controlling discharge orifices
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/46—Valves, e.g. injectors, with concentric valve bodies

Landscapes

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

Abstract

PURPOSE: To maintain an ideal condition for fuel ejection when the engine output is increasing and when it is decreasing, by providing a large needle valve, and a small needle valve which opens at a pressure lower than the pressure required for opening the large needle valve, and also providing nozzle holes corresponding to these needle valves.
CONSTITUTION: High pressure fuel F reaches large oil chamber 4 from inlet 1c via path 2, and then it reaches small oil chamber 6 via path 5. When the fuel pressure in small oil chamber 6 increases and the oil pressure exceeds the force of small spring 8, small needle valve 7 is raised, the fuel reaches nozzle 10 and it is ejected from small nozzle 11. When the fuel pressure has increased further and the pressure of the oil that has reached large oil chamber 4 below large needle valve 3 has exceeded the force of large spring 12, large needle valve 3 rises and a gap is produced between large needle valve 3 and valve seats 13, 14. By this, the fuel enters groove 15 between valve seats 13 and 14, and here it is ejected from many large nozzle holes 16 and small nozzle holes 11.
COPYRIGHT: (C)1980,JPO&Japio
JP14285578A 1978-11-21 1978-11-21 Fuel ejection valve Pending JPS5569754A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14285578A JPS5569754A (en) 1978-11-21 1978-11-21 Fuel ejection valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14285578A JPS5569754A (en) 1978-11-21 1978-11-21 Fuel ejection valve

Publications (1)

Publication Number Publication Date
JPS5569754A true JPS5569754A (en) 1980-05-26

Family

ID=15325179

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14285578A Pending JPS5569754A (en) 1978-11-21 1978-11-21 Fuel ejection valve

Country Status (1)

Country Link
JP (1) JPS5569754A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6145762A (en) * 1998-10-19 2000-11-14 Cummins Engine Company, Inc. Variable rate spring for a fuel injector
DK201670986A1 (en) * 2016-12-13 2018-04-03 Man Diesel & Turbo Filial Af Man Diesel & Turbo Se Tyskland Nozzle for fuel valve for injecting fuel into the cylinders of a large turbocharged two-stroke compression-ignited internal combustion engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6145762A (en) * 1998-10-19 2000-11-14 Cummins Engine Company, Inc. Variable rate spring for a fuel injector
DK201670986A1 (en) * 2016-12-13 2018-04-03 Man Diesel & Turbo Filial Af Man Diesel & Turbo Se Tyskland Nozzle for fuel valve for injecting fuel into the cylinders of a large turbocharged two-stroke compression-ignited internal combustion engine
DK179281B1 (en) * 2016-12-13 2018-04-03 Man Diesel & Turbo Filial Af Man Diesel & Turbo Se Tyskland Nozzle for fuel valve for injecting fuel into the cylinders of a large turbocharged two-stroke compression-ignited internal combustion engine
EP3336342A1 (en) * 2016-12-13 2018-06-20 MAN Diesel & Turbo, filal af MAN Diesel & Turbo SE, Tyskland Nozzle for fuel valve for injecting fuel into the cylinders of a large turbocharged two-stroke compression-ignited internal combustion engine

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