EP0903491A3 - Fuel injection circuit for an internal combustion engine with direct injection - Google Patents

Fuel injection circuit for an internal combustion engine with direct injection Download PDF

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Publication number
EP0903491A3
EP0903491A3 EP98402189A EP98402189A EP0903491A3 EP 0903491 A3 EP0903491 A3 EP 0903491A3 EP 98402189 A EP98402189 A EP 98402189A EP 98402189 A EP98402189 A EP 98402189A EP 0903491 A3 EP0903491 A3 EP 0903491A3
Authority
EP
European Patent Office
Prior art keywords
internal combustion
fuel
circuit
combustion engine
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.)
Withdrawn
Application number
EP98402189A
Other languages
German (de)
French (fr)
Other versions
EP0903491A2 (en
Inventor
Bertrand Hauet
Christian Ozenfant
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
Original Assignee
Renault SAS
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 filed Critical Renault SAS
Publication of EP0903491A2 publication Critical patent/EP0903491A2/en
Publication of EP0903491A3 publication Critical patent/EP0903491A3/en
Withdrawn legal-status Critical Current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
    • F02M59/38—Pumps characterised by adaptations to special uses or conditions
    • F02M59/42—Pumps characterised by adaptations to special uses or conditions for starting of engines
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails

Abstract

L'invention concerne un circuit d'injection de carburant pour un moteur à combustion interne et à injection directe, du type comportant au moins un injecteur (12) qui est alimenté en carburant sous haute pression par une canalisation (28) reliée à la sortie (26) d'une pompe à haute pression (24) dont l'entrée (22) est elle-même reliée, par un conduit (20), à une pompe à basse pression (16) qui puise le carburant dans un réservoir de carburant (14),
   caractérisé en ce que le circuit (10) comporte des moyens (30, 84, 86) pour obturer la sortie (26) de la pompe à haute pression (24) tant que la pression fournie par celle-ci n'a pas atteint une pression de seuil.

Figure 00000001
The invention relates to a fuel injection circuit for an internal combustion and direct injection engine, of the type comprising at least one injector (12) which is supplied with fuel under high pressure by a pipe (28) connected to the outlet. (26) of a high pressure pump (24), the inlet (22) of which is itself connected, by a conduit (20), to a low pressure pump (16) which draws fuel from a reservoir of fuel (14),
characterized in that the circuit (10) comprises means (30, 84, 86) for closing the outlet (26) of the high pressure pump (24) as long as the pressure supplied by it has not reached a threshold pressure.
Figure 00000001
EP98402189A 1997-09-18 1998-09-04 Fuel injection circuit for an internal combustion engine with direct injection Withdrawn EP0903491A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9711653 1997-09-18
FR9711653A FR2768465B1 (en) 1997-09-18 1997-09-18 FUEL INJECTION CIRCUIT FOR AN INTERNAL COMBUSTION AND DIRECT INJECTION ENGINE

Publications (2)

Publication Number Publication Date
EP0903491A2 EP0903491A2 (en) 1999-03-24
EP0903491A3 true EP0903491A3 (en) 1999-12-29

Family

ID=9511240

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98402189A Withdrawn EP0903491A3 (en) 1997-09-18 1998-09-04 Fuel injection circuit for an internal combustion engine with direct injection

Country Status (2)

Country Link
EP (1) EP0903491A3 (en)
FR (1) FR2768465B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19941850B4 (en) * 1999-09-02 2005-03-31 Siemens Ag Injection system for an internal combustion engine
DE102010064172A1 (en) * 2010-12-27 2012-06-28 Robert Bosch Gmbh Hydraulic pressure intensifier

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB552725A (en) * 1941-10-17 1943-04-21 Lucas Ltd Joseph Improvements relating to liquid-fuel injection means for prime movers
DE3128215A1 (en) * 1980-07-18 1982-04-01 Nissan Motor Co., Ltd., Yokohama, Kanagawa DEVICE FOR CONTROLLING FUEL INJECTION ON A DIESEL ENGINE
AT388030B (en) * 1982-02-12 1989-04-25 Steyr Daimler Puch Ag FUEL INJECTION SYSTEM FOR AN ELECTRICAL ENGINE, INCLUDING A STARTER LOCK, WITH DIESEL ENGINES
EP0531533A1 (en) * 1991-01-14 1993-03-17 Nippondenso Co., Ltd. Pressure accumulation type fuel jetting device
US5546912A (en) * 1993-12-14 1996-08-20 Yamaha Hatsudoki Kabushiki Kaisha Fuel supply device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB552725A (en) * 1941-10-17 1943-04-21 Lucas Ltd Joseph Improvements relating to liquid-fuel injection means for prime movers
DE3128215A1 (en) * 1980-07-18 1982-04-01 Nissan Motor Co., Ltd., Yokohama, Kanagawa DEVICE FOR CONTROLLING FUEL INJECTION ON A DIESEL ENGINE
AT388030B (en) * 1982-02-12 1989-04-25 Steyr Daimler Puch Ag FUEL INJECTION SYSTEM FOR AN ELECTRICAL ENGINE, INCLUDING A STARTER LOCK, WITH DIESEL ENGINES
EP0531533A1 (en) * 1991-01-14 1993-03-17 Nippondenso Co., Ltd. Pressure accumulation type fuel jetting device
US5546912A (en) * 1993-12-14 1996-08-20 Yamaha Hatsudoki Kabushiki Kaisha Fuel supply device

Also Published As

Publication number Publication date
FR2768465B1 (en) 1999-10-29
EP0903491A2 (en) 1999-03-24
FR2768465A1 (en) 1999-03-19

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