JPS5713264A - Fuel injection device - Google Patents

Fuel injection device

Info

Publication number
JPS5713264A
JPS5713264A JP8744980A JP8744980A JPS5713264A JP S5713264 A JPS5713264 A JP S5713264A JP 8744980 A JP8744980 A JP 8744980A JP 8744980 A JP8744980 A JP 8744980A JP S5713264 A JPS5713264 A JP S5713264A
Authority
JP
Japan
Prior art keywords
nozzle
fuel injection
fuel
needle
pressure
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.)
Granted
Application number
JP8744980A
Other languages
Japanese (ja)
Other versions
JPS6337259B2 (en
Inventor
Kenji Nakayama
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.)
Bosch Corp
Original Assignee
Diesel Kiki Co 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 Diesel Kiki Co Ltd filed Critical Diesel Kiki Co Ltd
Priority to JP8744980A priority Critical patent/JPS5713264A/en
Publication of JPS5713264A publication Critical patent/JPS5713264A/en
Publication of JPS6337259B2 publication Critical patent/JPS6337259B2/ja
Granted 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
    • 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
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/105—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive hydraulic drive

Landscapes

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

Abstract

PURPOSE: To improve the risetime and falltime fuel injection and bring the fuel injection characteristics closer to a square waveform, by a method wherein the injection period is determined through controlling the disphacement of a nozzle needle by controlling the pressure supplied to a needle holder, in a fuel injection device for Diesel engine.
CONSTITUTION: In the condition where compressed fuel is supplied from a fuel compressor 10 to an oil sump 21 at a fuel injection nozzle 17, when a control valve 37 is fully opened, the pressure in a chamber 29 of the needle holder 25 is rapidly lowered below the pressure applied from the oil sump 21, so that the nozzle needle 19 is moved upward and the fuel is jetted from a nozzle hoel 20. When the valve 37 is switched to a fully closed position, the pressure inside the chamber 29 is rapidly increased, causing the needle 19 to close the nozzle hole 20. Namely the opening and closing of the nozzle hole 20 is controlled by the change of pressure in the needle holder 25. Accordingly, the risetime and falltime of fuel injection can be improved, as compared to those in the case where a nozzle spring is used.
COPYRIGHT: (C)1982,JPO&Japio
JP8744980A 1980-06-27 1980-06-27 Fuel injection device Granted JPS5713264A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8744980A JPS5713264A (en) 1980-06-27 1980-06-27 Fuel injection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8744980A JPS5713264A (en) 1980-06-27 1980-06-27 Fuel injection device

Publications (2)

Publication Number Publication Date
JPS5713264A true JPS5713264A (en) 1982-01-23
JPS6337259B2 JPS6337259B2 (en) 1988-07-25

Family

ID=13915159

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8744980A Granted JPS5713264A (en) 1980-06-27 1980-06-27 Fuel injection device

Country Status (1)

Country Link
JP (1) JPS5713264A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61185674A (en) * 1985-02-09 1986-08-19 Mitsubishi Heavy Ind Ltd Fuel injection device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61185674A (en) * 1985-02-09 1986-08-19 Mitsubishi Heavy Ind Ltd Fuel injection device

Also Published As

Publication number Publication date
JPS6337259B2 (en) 1988-07-25

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