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GB725379A - Improvements in fuel injection nozzles for internal combustion engines - Google Patents

Improvements in fuel injection nozzles for internal combustion engines

Info

Publication number
GB725379A
GB725379A GB13176/53A GB1317653A GB725379A GB 725379 A GB725379 A GB 725379A GB 13176/53 A GB13176/53 A GB 13176/53A GB 1317653 A GB1317653 A GB 1317653A GB 725379 A GB725379 A GB 725379A
Authority
GB
United Kingdom
Prior art keywords
aperture
pintle
needle lift
fuel
fuel injection
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
GB13176/53A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB725379A publication Critical patent/GB725379A/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
    • F02M61/06—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 the valves being furnished at seated ends with pintle or plug shaped extensions

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

725,379. Fuel injectors. BOSCH GES., R. May 12, 1953 [June 17, 1952], No. 13176/53. Class 7 (3). A fuel injection valve 2 operated by fuel pressure has at the end thereof a pintle 11 formed of a cylindrical section and a conically tapered terminal section which pintle, when the nozzle is closed, is disposed with clearance within a cylindrical injection aperture 12 of diameter at the most 0À9 mm., the pintle remaining within the aperture 12 during a first portion of the needle lift to produce a hollow jet while at full needle lift it is retracted from the aperture to produce a dense jet. The cylindrical portion of the pintle 11 projects into the aperture 12 by approximately half of the full needle lift and the length of the aperture 12 is between one half and twice its diameter. The valve closing spring 4 may be arranged so that the closing force thereof increases, during the first portion of the needle lift, at a greater rate than the opening force of the fuel on the valve.
GB13176/53A 1952-06-17 1953-05-12 Improvements in fuel injection nozzles for internal combustion engines Expired GB725379A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE725379X 1952-06-17

Publications (1)

Publication Number Publication Date
GB725379A true GB725379A (en) 1955-03-02

Family

ID=6634942

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13176/53A Expired GB725379A (en) 1952-06-17 1953-05-12 Improvements in fuel injection nozzles for internal combustion engines

Country Status (1)

Country Link
GB (1) GB725379A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2433643A1 (en) * 1978-08-17 1980-03-14 Maschf Augsburg Nuernberg Ag FUEL INJECTOR FOR INTERNAL COMBUSTION ENGINES
GB2133833A (en) * 1983-01-17 1984-08-01 Daihatsu Motor Co Ltd I c engine fuel injector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2433643A1 (en) * 1978-08-17 1980-03-14 Maschf Augsburg Nuernberg Ag FUEL INJECTOR FOR INTERNAL COMBUSTION ENGINES
GB2133833A (en) * 1983-01-17 1984-08-01 Daihatsu Motor Co Ltd I c engine fuel injector
US4715540A (en) * 1983-01-17 1987-12-29 Daihatsu Motor Company Limited Fuel-injection nozzle

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