EP0089301A1 - Système pour la commande de l'injection sur un moteur diesel - Google Patents

Système pour la commande de l'injection sur un moteur diesel Download PDF

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Publication number
EP0089301A1
EP0089301A1 EP83420045A EP83420045A EP0089301A1 EP 0089301 A1 EP0089301 A1 EP 0089301A1 EP 83420045 A EP83420045 A EP 83420045A EP 83420045 A EP83420045 A EP 83420045A EP 0089301 A1 EP0089301 A1 EP 0089301A1
Authority
EP
European Patent Office
Prior art keywords
jacket
drawer
holes
injection
movable
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.)
Withdrawn
Application number
EP83420045A
Other languages
German (de)
English (en)
French (fr)
Inventor
Jean-Louis Dazzi
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 Trucks SAS
Original Assignee
Renault Vehicules Industriels 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 Renault Vehicules Industriels SA filed Critical Renault Vehicules Industriels SA
Publication of EP0089301A1 publication Critical patent/EP0089301A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure

Definitions

  • the present invention relates to a system of a new type, for controlling the start and end of fuel injection into the displacement of a diesel engine.
  • micro-solenoid valves triggered from an electronic calculator.
  • the object of the present invention is to avoid these drawbacks by providing a system with hydraulic control for the start and end of injection, in particular allowing the use of injector holders which have been little modified compared to conventional injector holders.
  • a system according to the invention for controlling the start and end of fuel injection into the displacement of a diesel engine, comprises in known manner, an injector holder controlling the closing of the injector when the high pressure is sent on top of it, while when this high pressure stops, the injector opens, and it is characterized in that inside the injector holder are a movable jacket and a central drawer two concentric, capable of sliding relative to each other and relative to a peripheral fixed jacket, under the action of hydraulic pulses distributed from micro-electro-valves actuated by an electronic computer.
  • an injector holder 1 equipped with an injector 2, the assembly being mounted in the known manner, in the cylinder head of a diesel engine, for injecting into the displacement, the desired dose of fuel at each engine oyle.
  • connection to medium pressure 4 opens onto the end 11 of a central drawer 12.
  • the latter is supported by a shuttle 13 on a stop piece 14, to which a compression spring 15 is maintained on an injection valve 16.
  • a movable tubular jacket 17 provided with an elongated lateral opening 18 capable of moving in the axial direction, relative to a fixed indexing pin 19.
  • the latter prevents the mobile jacket 17 from turning on itself, while limiting the amplitude of its movements in the axial direction shown diagrammatically by the double arrow 20.
  • the pin 19 is secured to a fixed jacket 21 housed in the body of the injector holder 1.
  • a movable tubular spacer 22 is disposed between the end of the movable jacket 17, and the stop piece 14.
  • the start of injection is caused when the line 23 above the injector 2 is connected to the discharge 6, while on the contrary, the end of injection is caused by connecting this same line 23 to the high pressure supply 3.
  • Figure 6 the rest position which corresponds to the end of injection.
  • the movable sleeve 17 and the drawer 12 are subjected to the sole action of their springs 15 and 48.
  • No pressure pulse is sent into the ends 4 and 5.
  • the high-pressure end 3 communicates with the pipe 23, through the groove 42 of the drawer 12, and the corresponding holes 33 of the movable jacket 17.
  • the drawer 12 and the movable jacket 17 are used, not for passing the piloting flow rate from the needle of the injector 2, but directly to the injected flow rate. In this variant, it is not possible to have assisted closing for the injector.
  • the variant of FIG. 10 is used when the speed of the injection frequency is not critical. In this case, provision is made for the drawer 12 and the jacket 17 to describe a round trip for each injection cycle. This leads to a simplified system comprising only three channels connected to the pipe 23 (see FIG. 10).
  • This variant of FIG. 10 is advantageous for slow engines or when it is desired to integrate the double sheath 12 - 17, into the injector holder 1.
  • the start of injection is defined by the intermediate jacket 17, with passage of the injected flow.
  • the start of injection is defined by the central drawer 12, while it is the intermediate jacket 17 which defines the end of injection.
  • the intermediate jacket 17 having a larger annular section, it can be animated with a faster movement, which. may be of interest on certain types of engines.
  • control of the drawer 12 and of the movable jacket 17 could be both electronic and mechanical, instead of the hydraulic control illustrated in FIG. 1.

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)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
EP83420045A 1982-03-16 1983-03-14 Système pour la commande de l'injection sur un moteur diesel Withdrawn EP0089301A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8204789 1982-03-16
FR8204789A FR2523647A1 (fr) 1982-03-16 1982-03-16 Systeme pour la commande de l'injection sur un moteur diesel

Publications (1)

Publication Number Publication Date
EP0089301A1 true EP0089301A1 (fr) 1983-09-21

Family

ID=9272220

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83420045A Withdrawn EP0089301A1 (fr) 1982-03-16 1983-03-14 Système pour la commande de l'injection sur un moteur diesel

Country Status (4)

Country Link
US (1) US4615322A (enrdf_load_stackoverflow)
EP (1) EP0089301A1 (enrdf_load_stackoverflow)
ES (1) ES8401184A1 (enrdf_load_stackoverflow)
FR (1) FR2523647A1 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0243931A3 (en) * 1986-04-29 1989-10-18 Klockner-Humboldt-Deutz Aktiengesellschaft Fuel injection device for an internal-combustion engine
EP0686763A1 (de) * 1994-06-06 1995-12-13 Ganser-Hydromag Brennstoffeinspritzventil für Verbrennungskraftmaschinen

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4425295A1 (de) * 1994-07-18 1996-01-25 Bosch Gmbh Robert Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine
NL9402238A (nl) * 1994-12-29 1996-08-01 Adrianus Martinus M Wildenberg Fluidumdoseerinrichting.
US6349682B1 (en) * 2000-02-09 2002-02-26 Richard C. Alexius Free piston engine and self-actuated fuel injector therefor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2051944A1 (de) * 1969-10-24 1971-05-06 Developement De Li Soc Fr Et Verbesserte elektromagnetische Ein spritzdüse mit Servoeinrichtung
FR2190167A5 (enrdf_load_stackoverflow) * 1972-06-23 1974-01-25 Sopromi Soc Proc Modern Inject
FR2331693A2 (fr) * 1975-11-15 1977-06-10 Maschf Augsburg Nuernberg Ag Dispositif d'injection de carburant pour moteurs a combustion interne
EP0030907A1 (fr) * 1979-12-14 1981-06-24 RENAULT VEHICULES INDUSTRIELS Société dite: Dispositif d'injection de carburant pour un moteur à combustion interne

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2827030A (en) * 1955-11-22 1958-03-18 Strumbos William Fuel injection means for internal combustion engines
US3851635A (en) * 1969-05-14 1974-12-03 F Murtin Electronically controlled fuel-supply system for compression-ignition engine
CA1047863A (en) * 1973-10-03 1979-02-06 Hansueli Bart Metering valve for fuel injection
US4449507A (en) * 1980-12-17 1984-05-22 The Bendix Corporation Dual pressure metering for distributor pumps

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2051944A1 (de) * 1969-10-24 1971-05-06 Developement De Li Soc Fr Et Verbesserte elektromagnetische Ein spritzdüse mit Servoeinrichtung
FR2190167A5 (enrdf_load_stackoverflow) * 1972-06-23 1974-01-25 Sopromi Soc Proc Modern Inject
FR2331693A2 (fr) * 1975-11-15 1977-06-10 Maschf Augsburg Nuernberg Ag Dispositif d'injection de carburant pour moteurs a combustion interne
EP0030907A1 (fr) * 1979-12-14 1981-06-24 RENAULT VEHICULES INDUSTRIELS Société dite: Dispositif d'injection de carburant pour un moteur à combustion interne

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0243931A3 (en) * 1986-04-29 1989-10-18 Klockner-Humboldt-Deutz Aktiengesellschaft Fuel injection device for an internal-combustion engine
EP0686763A1 (de) * 1994-06-06 1995-12-13 Ganser-Hydromag Brennstoffeinspritzventil für Verbrennungskraftmaschinen
US5685483A (en) * 1994-06-06 1997-11-11 Ganser-Hydromag Fuel injection valve for internal combustion engines
US5842640A (en) * 1994-06-06 1998-12-01 Ganser-Hydromag Fuel injection valve for internal combustion engines

Also Published As

Publication number Publication date
FR2523647A1 (fr) 1983-09-23
ES520678A0 (es) 1983-12-16
US4615322A (en) 1986-10-07
ES8401184A1 (es) 1983-12-16
FR2523647B1 (enrdf_load_stackoverflow) 1984-06-15

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19831010

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19871001

RIN1 Information on inventor provided before grant (corrected)

Inventor name: DAZZI, JEAN-LOUIS