FR2497876B1 - FUEL INJECTION DEVICE AND METHOD FOR AN INTERNAL COMBUSTION ENGINE - Google Patents

FUEL INJECTION DEVICE AND METHOD FOR AN INTERNAL COMBUSTION ENGINE

Info

Publication number
FR2497876B1
FR2497876B1 FR8100679A FR8100679A FR2497876B1 FR 2497876 B1 FR2497876 B1 FR 2497876B1 FR 8100679 A FR8100679 A FR 8100679A FR 8100679 A FR8100679 A FR 8100679A FR 2497876 B1 FR2497876 B1 FR 2497876B1
Authority
FR
France
Prior art keywords
chamber
pressure
control
injection
subjected
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
FR8100679A
Other languages
French (fr)
Other versions
FR2497876A1 (en
Inventor
Jean-Pierre Jourde
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.)
Renault SAS
Regie Nationale des Usines Renault
Original Assignee
Renault SAS
Regie Nationale des Usines Renault
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 Renault SAS, Regie Nationale des Usines Renault filed Critical Renault SAS
Priority to FR8100679A priority Critical patent/FR2497876B1/en
Priority to DE8181401902T priority patent/DE3175234D1/en
Priority to AT81401902T priority patent/ATE21729T1/en
Priority to EP81401902A priority patent/EP0056916B1/en
Publication of FR2497876A1 publication Critical patent/FR2497876A1/en
Application granted granted Critical
Publication of FR2497876B1 publication Critical patent/FR2497876B1/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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-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
    • F02M47/025—Hydraulically actuated valves draining the chamber to release the closing 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
    • 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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

1. A fuel injection arrangement for an internal combustion engine comprising : an injection chamber (5) which is closed by a needle subjected to the force of a closure spring and the pressure in a discharge chamber (9) ; a control system (12) having two differential pistons which are fixed with respect to each other and comprising : - a delivery piston (13) delimiting a metering chamber (14) communicating with the injection chamber (5) and supplied with fuel at an intermediate feed pressure ; - a control piston (16) which is larger in section than the delivery piston (13), delimiting a control chamber (17) which can be subjected to a high control pressure by means of a three-way electrically operated valve system ; and - control means for discharging the discharge chamber (9) when the metered amount of fuel has been subjected to the injection pressure by the action of the high control pressure on the control piston (16) ; the dimensions of said discharge chamber (9) and the characteristics of the injector (1) being such that prior to injection the needle (2) remains in the closure position, when the injection chamber (5) is at the injection pressure obtaining in the metering chamber (14), the high control pressure being applied to the control piston (16) and the discharge chamber (9) being subjected to the control pressure ; the section (Sd ) of the discharge chamber (9) where the control pressure occurs and the closure spring (10) of the injector being such that the forces which result therefrom tending to hold the needle in the closure position are greater thant the force tending to open the needle and resulting from the action of the injection pressure in the metering chamber (14), the arrangement being characterised in that the control means for discharging the discharge chamber (9) comprise a sliding spool-type distributor (51) which is pilot-controlled by the high control pressure and by the pressure obtaining in the metering chamber (14) and that the spool of the distributor (51) is subjected on the one hand to the action of the high control pressure obtaining in a first pilot-control chamber (58) and on the other hand to the action of the pressure obtaining in a second pilot-control chamber (59), the second chamber communicating with a lower passage (66) opening into the metering chamber (14) and being capable of being closed by the delivery piston (13) and with an upper passage (67) communicating with the low pressure of the tank and being capable of being closed by the delivery piston (13), on of the said two passages being opened irrespective of the position of the delivery piston (13).
FR8100679A 1981-01-15 1981-01-15 FUEL INJECTION DEVICE AND METHOD FOR AN INTERNAL COMBUSTION ENGINE Expired FR2497876B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR8100679A FR2497876B1 (en) 1981-01-15 1981-01-15 FUEL INJECTION DEVICE AND METHOD FOR AN INTERNAL COMBUSTION ENGINE
DE8181401902T DE3175234D1 (en) 1981-01-15 1981-12-01 Device for fuel injection for an internal-combustion engine
AT81401902T ATE21729T1 (en) 1981-01-15 1981-12-01 DEVICE FOR INJECTING FUEL INTO AN INTERNAL COMBUSTION ENGINE.
EP81401902A EP0056916B1 (en) 1981-01-15 1981-12-01 Device for fuel injection for an internal-combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8100679A FR2497876B1 (en) 1981-01-15 1981-01-15 FUEL INJECTION DEVICE AND METHOD FOR AN INTERNAL COMBUSTION ENGINE

Publications (2)

Publication Number Publication Date
FR2497876A1 FR2497876A1 (en) 1982-07-16
FR2497876B1 true FR2497876B1 (en) 1986-02-07

Family

ID=9254174

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8100679A Expired FR2497876B1 (en) 1981-01-15 1981-01-15 FUEL INJECTION DEVICE AND METHOD FOR AN INTERNAL COMBUSTION ENGINE

Country Status (4)

Country Link
EP (1) EP0056916B1 (en)
AT (1) ATE21729T1 (en)
DE (1) DE3175234D1 (en)
FR (1) FR2497876B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2541379B1 (en) * 1983-02-21 1987-06-12 Renault IMPROVEMENT IN ELECTROMAGNETICALLY CONTROLLED INJECTION SYSTEMS FOR A PRESSURE-TIME DIESEL ENGINE WHERE THE INJECTOR NEEDLE IS DRIVEN BY THE DISCHARGE THEN LOADING A CAPACITY
US6575137B2 (en) 1994-07-29 2003-06-10 Caterpillar Inc Piston and barrel assembly with stepped top and hydraulically-actuated fuel injector utilizing same
DE19910970A1 (en) * 1999-03-12 2000-09-28 Bosch Gmbh Robert Fuel injector
DE19939428A1 (en) * 1999-08-20 2001-03-01 Bosch Gmbh Robert Method and device for performing a fuel injection

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2126787C3 (en) * 1971-05-28 1980-01-24 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection device for internal combustion engines
DE2126777A1 (en) * 1971-05-28 1972-12-14 Bosch Gmbh Robert Pump nozzle for fuel injection for internal combustion engines
US3983855A (en) * 1973-07-12 1976-10-05 C.A.V. Limited Fuel injection system
DE2558789A1 (en) * 1975-12-24 1977-07-14 Bosch Gmbh Robert HIGH PRESSURE FUEL INJECTION DEVICE FOR DIESEL ENGINES
JPS53109021A (en) * 1977-03-07 1978-09-22 Nippon Denso Co Ltd Fuel injection device for internal combustion engine
DE2759187A1 (en) * 1977-12-31 1979-07-12 Bosch Gmbh Robert FUEL INJECTION SYSTEM WITH AT LEAST ONE FUEL INJECTION VALVE, ESPECIALLY FOR LARGE ENGINES
DE3000960A1 (en) * 1980-01-12 1981-09-10 Robert Bosch Gmbh, 7000 Stuttgart FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINES, ESPECIALLY FOR DIESEL ENGINES

Also Published As

Publication number Publication date
EP0056916B1 (en) 1986-08-27
EP0056916A1 (en) 1982-08-04
DE3175234D1 (en) 1986-10-02
ATE21729T1 (en) 1986-09-15
FR2497876A1 (en) 1982-07-16

Similar Documents

Publication Publication Date Title
US4402456A (en) Double dump single solenoid unit injector
ES2025054B3 (en) FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINES.
US5004154A (en) High pressure fuel injection device for engine
GB2110310A (en) Improvements in or relating to fuel injection devices for internal combustion engines
US5150688A (en) Magnet valve, in particular for fuel injection pumps
GB2110756A (en) A fuel injection system for internal combustion engines
FR2497876B1 (en) FUEL INJECTION DEVICE AND METHOD FOR AN INTERNAL COMBUSTION ENGINE
GB1308810A (en) Fuel injection pump for internal combustion engines
US4408587A (en) Fuel injection system
JPS5781152A (en) Electronic regenerative pressure fuel injector for internal combustion engine
US3777726A (en) Fuel injection apparatus
US4411238A (en) Pump-injector device for an internal combustion engine
EP0363996B1 (en) High pressure fuel injection device for engine
GB2078854A (en) Fuel pump-injector assemblies for internal combustion engines
US2939446A (en) Fuel control unit
US4354472A (en) Fuel injection system
EP0080735A3 (en) Fuel injection apparatus for internal combustion engines
EP0044006A1 (en) Fuel injection device for a combustion piston engine with spark ignition
EP0435965A1 (en) Control device for stopping an internal combustion engine.
ES8402049A1 (en) Electromagnetic injection system for diesel engines providing for a pressure-time-type injection application.
DE2329667C3 (en) Control element for a fuel injection system of internal combustion engines
JPS5781153A (en) Electronic regenerative pressure fuel injector for internal combustion engine
ES8607480A1 (en) Fuel jet apparatus of engine
DE3804368A1 (en) Injection nozzle and injection pump combined in one standard unit
DE3039090A1 (en) Modified air supply to unloaded fuel injection engine - to prevent excessive under pressure in manifold and cylinders