EP0990792A3 - Common-Rail fuel injection system - Google Patents

Common-Rail fuel injection system Download PDF

Info

Publication number
EP0990792A3
EP0990792A3 EP99116319A EP99116319A EP0990792A3 EP 0990792 A3 EP0990792 A3 EP 0990792A3 EP 99116319 A EP99116319 A EP 99116319A EP 99116319 A EP99116319 A EP 99116319A EP 0990792 A3 EP0990792 A3 EP 0990792A3
Authority
EP
European Patent Office
Prior art keywords
rail
injection system
common
fuel injection
chamber
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Withdrawn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
EP99116319A
Other languages
German (de)
French (fr)
Other versions
EP0990792A2 (en
Inventor
Fritz Spinnler
Claudio Zanetti
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.)
CRT COMMON RAIL TECHNOLOGIES AG
Original Assignee
CRT Common Rail Technologies AG
CRT Common Rail Tech AG
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 CRT Common Rail Technologies AG, CRT Common Rail Tech AG filed Critical CRT Common Rail Technologies AG
Publication of EP0990792A2 publication Critical patent/EP0990792A2/en
Publication of EP0990792A3 publication Critical patent/EP0990792A3/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Withdrawn legal-status Critical Current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
    • F02M59/02—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
    • F02M59/08—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 two or more pumping elements with conjoint outlet or several pumping elements feeding one engine cylinder
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F02M55/025—Common rails
    • 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

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

Ein Common-Rail Einspritzsystem (10) weist ein Rail (14) mit einem Druckraum (28) sowie einen Injektor (22) und eine Hochdruckpumpe (16) mit einem Förderraum (40) und einem Plungerkolben (20) auf. Das Rail (14) weist eine Ausnehmung (36) auf, deren Ausnehmungswände (38) einen Teil des Förderraumes (40) begrenzen. Über einen Durchlasskanal (32) ist der Förderraum (40) mit dem Druckraum (28) des Rails (14) verbunden. Über einen Zuführkanal (44) wird bei einem Saughub des Plungerkolbens (20) dem Förderraum (40) ein Druckmedium (A) zugeführt. Sowohl im Zuführkanal (44) als auch im Durchlasskanal (32) sind Ventile (30, 42) vorgesehen.

Figure 00000001
A common rail injection system (10) has a rail (14) with a pressure chamber (28) as well as an injector (22) and a high pressure pump (16) with a delivery chamber (40) and a plunger (20). The rail (14) has a recess (36), the recess walls (38) of which delimit part of the delivery space (40). The delivery chamber (40) is connected to the pressure chamber (28) of the rail (14) via a passage channel (32). A pressure medium (A) is fed to the delivery chamber (40) via a feed channel (44) during a suction stroke of the plunger (20). Valves (30, 42) are provided both in the feed channel (44) and in the passage channel (32).
Figure 00000001
EP99116319A 1998-09-30 1999-08-19 Common-Rail fuel injection system Withdrawn EP0990792A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH198798 1998-09-30
CH198798 1998-09-30

Publications (2)

Publication Number Publication Date
EP0990792A2 EP0990792A2 (en) 2000-04-05
EP0990792A3 true EP0990792A3 (en) 2003-05-21

Family

ID=4223267

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99116319A Withdrawn EP0990792A3 (en) 1998-09-30 1999-08-19 Common-Rail fuel injection system

Country Status (2)

Country Link
EP (1) EP0990792A3 (en)
JP (1) JP2000110692A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50013384D1 (en) * 1999-11-19 2006-10-12 Crt Common Rail Tech Ag High-pressure injection system with common rail
DE10115859A1 (en) * 2001-03-30 2002-10-17 Bosch Gmbh Robert High-pressure fuel pump with integrated common rail
DE10136925C1 (en) * 2001-07-30 2002-12-12 Orange Gmbh Fuel injector for internal combustion engine with high-pressure piston pump and valves has pump working area linked on intake to low-pressure source and on compression to high-pressure reservoir
DE10136926C1 (en) * 2001-07-30 2003-01-16 Orange Gmbh Fuel injection device, for internal combustion engine, has working space of high pressure pump coupled to low pressure source and high pressure reservoir during suction and compression strokes
DE10157135B4 (en) * 2001-11-21 2004-03-11 Man B & W Diesel Ag Fuel supply system in the form of a common rail system of an internal combustion engine with several cylinders
JP2006170432A (en) * 2004-11-22 2006-06-29 Fuji Techno Industries Corp Ball valve device
JP4407754B2 (en) * 2008-01-29 2010-02-03 株式会社デンソー pump
DE102009000964A1 (en) * 2009-02-18 2010-08-19 Robert Bosch Gmbh High pressure fuel pump for an internal combustion engine
ITTO20090715A1 (en) * 2009-09-21 2011-03-22 Torino Politecnico PUMP UNIT PERFECTED FOR AN INJECTION DEVICE OF AN INTERNAL COMBUSTION ENGINE
DE102010001252A1 (en) 2010-01-27 2011-07-28 Robert Bosch GmbH, 70469 Fuel injection system with integrated high-pressure accumulator on a cylinder head
DE102011005096A1 (en) * 2011-03-04 2012-09-06 Man Diesel & Turbo Se internal combustion engine
ITUB20159428A1 (en) * 2015-12-29 2017-06-29 Bosch Gmbh Robert PUMPING GROUP FOR FUEL SUPPLEMENTATION, PREFERABLY GASOIL, TO AN INTERNAL COMBUSTION ENGINE

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994027041A1 (en) * 1993-05-06 1994-11-24 Cummins Engine Company, Inc. Compact high performance fuel system with accumulator
EP0685644A2 (en) * 1994-05-06 1995-12-06 Cummins Engine Company, Inc. High pressure pump for fuel injection systems
EP0915252A2 (en) * 1997-11-05 1999-05-12 SIG Schweizerische Industrie-Gesellschaft Common rail fuel injection system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994027041A1 (en) * 1993-05-06 1994-11-24 Cummins Engine Company, Inc. Compact high performance fuel system with accumulator
EP0685644A2 (en) * 1994-05-06 1995-12-06 Cummins Engine Company, Inc. High pressure pump for fuel injection systems
EP0915252A2 (en) * 1997-11-05 1999-05-12 SIG Schweizerische Industrie-Gesellschaft Common rail fuel injection system

Also Published As

Publication number Publication date
EP0990792A2 (en) 2000-04-05
JP2000110692A (en) 2000-04-18

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