EP1239146A3 - Fuel injection system for internal combustion engine - Google Patents

Fuel injection system for internal combustion engine Download PDF

Info

Publication number
EP1239146A3
EP1239146A3 EP02001824A EP02001824A EP1239146A3 EP 1239146 A3 EP1239146 A3 EP 1239146A3 EP 02001824 A EP02001824 A EP 02001824A EP 02001824 A EP02001824 A EP 02001824A EP 1239146 A3 EP1239146 A3 EP 1239146A3
Authority
EP
European Patent Office
Prior art keywords
control
valve
fuel injection
internal combustion
injection system
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Withdrawn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
EP02001824A
Other languages
German (de)
French (fr)
Other versions
EP1239146A2 (en
Inventor
Giovanni Ferraro
Hansjörg EGELER
Werner Teschner
Mario Gutmann
Ingolf Kahleyss
Manfred Mack
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1239146A2 publication Critical patent/EP1239146A2/en
Publication of EP1239146A3 publication Critical patent/EP1239146A3/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Withdrawn legal-status Critical Current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
    • 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
    • F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
    • F02M63/0007—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using electrically actuated valves
    • 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

Abstract

Kraftstoffeinspritzsystem für Brennkraftmaschinen mit einem Kraftstoffeinspritzventil (1), das ein Gehäuse aufweist, in dem in einer Bohrung (62) ein Ventilglied (60) axial beweglich angeordnet ist. Das Ventilglied (60) wird durch den Kraftstoffdruck in einem Druckraum (64) hydraulisch gesteuert und ist entgegen einer Schließkraft längsverschiebbar, wodurch es wenigstens eine Einspritzöffnung (68) steuert. Im Gehäuse ist ein Steuerventil (30) angeordnet, durch das die Verbindung des Druckraums (64) mit einer Kraftstoffhochdruckquelle (10) und/oder eines Entlastungsraums (72) gesteuert wird. Das Steuerventil (30) ist mit dem Entlastungsraum (72) über eine Steuerverbindung verbunden, die durch ein zusätzliches Ventil verschließbar ist, welches als Steuerglied einen Kolben (45) aufweist, der sich synchron mit dem Ventilglied (60) in Längsrichtung bewegt und der einen Endabschnitt (44) aufweist, an dem eine Steuerkante (93) ausgebildet ist, welche nach einem Teil des Gesamthubs des Kolbens (45) in einen Steuerabschnitt (48) der Steuerverbindung eintaucht und diese verschließt (Fig. 1).

Figure 00000001
Figure 00000002
Fuel injection system for internal combustion engines with a fuel injection valve (1) which has a housing in which a valve member (60) is arranged in an axially movable manner in a bore (62). The valve member (60) is hydraulically controlled by the fuel pressure in a pressure chamber (64) and is longitudinally displaceable against a closing force, as a result of which it controls at least one injection opening (68). A control valve (30) is arranged in the housing and controls the connection of the pressure chamber (64) to a high-pressure fuel source (10) and / or a relief chamber (72). The control valve (30) is connected to the relief chamber (72) via a control connection which can be closed by an additional valve, which has a piston (45) as the control element, which moves in the longitudinal direction synchronously with the valve element (60) and one End section (44) on which a control edge (93) is formed, which after part of the total stroke of the piston (45) dips into a control section (48) of the control connection and closes it (Fig. 1).
Figure 00000001
Figure 00000002
EP02001824A 2001-02-23 2002-01-26 Fuel injection system for internal combustion engine Withdrawn EP1239146A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001108719 DE10108719A1 (en) 2001-02-23 2001-02-23 Fuel injection system has control connection between relief cavity and control valve
DE10108719 2001-02-23

Publications (2)

Publication Number Publication Date
EP1239146A2 EP1239146A2 (en) 2002-09-11
EP1239146A3 true EP1239146A3 (en) 2004-01-21

Family

ID=7675225

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02001824A Withdrawn EP1239146A3 (en) 2001-02-23 2002-01-26 Fuel injection system for internal combustion engine

Country Status (2)

Country Link
EP (1) EP1239146A3 (en)
DE (1) DE10108719A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5012982A (en) * 1986-11-15 1991-05-07 Hitachi, Ltd. Electromagnetic fuel injector
DE19701879A1 (en) * 1997-01-21 1998-07-23 Bosch Gmbh Robert Fuel injection device for internal combustion engines
US6067955A (en) * 1997-09-24 2000-05-30 Robert Bosch Gmbh Fuel injection device for internal combustion engines
DE19923421A1 (en) * 1999-05-21 2000-11-30 Bosch Gmbh Robert Injector for controlling internal combustion engine fuel injection process has nozzle needle coupled to sliding element that interacts with 2-2-way valve to control injection start and quantity
DE10033426A1 (en) * 2000-07-10 2002-01-24 Bosch Gmbh Robert Injector / nozzle needle combination with control room side coupling
WO2002033250A1 (en) * 2000-10-18 2002-04-25 Robert Bosch Gmbh Fuel injection system for internal combustion engines

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5012982A (en) * 1986-11-15 1991-05-07 Hitachi, Ltd. Electromagnetic fuel injector
DE19701879A1 (en) * 1997-01-21 1998-07-23 Bosch Gmbh Robert Fuel injection device for internal combustion engines
US6067955A (en) * 1997-09-24 2000-05-30 Robert Bosch Gmbh Fuel injection device for internal combustion engines
DE19923421A1 (en) * 1999-05-21 2000-11-30 Bosch Gmbh Robert Injector for controlling internal combustion engine fuel injection process has nozzle needle coupled to sliding element that interacts with 2-2-way valve to control injection start and quantity
DE10033426A1 (en) * 2000-07-10 2002-01-24 Bosch Gmbh Robert Injector / nozzle needle combination with control room side coupling
WO2002033250A1 (en) * 2000-10-18 2002-04-25 Robert Bosch Gmbh Fuel injection system for internal combustion engines

Also Published As

Publication number Publication date
EP1239146A2 (en) 2002-09-11
DE10108719A1 (en) 2002-09-05

Similar Documents

Publication Publication Date Title
EP1727983B1 (en) High-pressure pump, in particular for a fuel-injection device in an internal combustion engine
DE3633136C2 (en)
DE69626511T2 (en) A HYDRAULIC ACTUATOR FOR AN INTERNAL COMBUSTION ENGINE
DE102008045730B4 (en) Return-free fuel pump unit and vehicle equipped with it
DE60318363T2 (en) Hydraulic valve actuation system
DE3344825A1 (en) PRESSURE VALVE FOR FUEL INJECTION PUMPS
EP1701007B1 (en) Hydraulic valve lash adjuster
EP0864743A3 (en) Fuel injection valve for internal combustion engines
WO2010055100A1 (en) Pump unit for a high-pressure pump
EP1636488B1 (en) Check valve, especially for a high pressure pump of a fuel injection device for an internal combustion engine
DE102006055486A1 (en) Fuel injection valve for internal-combustion engine, has control valve to control fuel pressure and transfer control valve-thrust force on piezoelement that works as force sensor and operating condition detection sensor
DE102006012078A1 (en) Fuel injection device for an internal combustion engine with direct fuel injection
DE10029261A1 (en) Camshaft pivoting device has electrically activated control valve for hydraulic fluid integrated into camshaft pivoting device to feed hydraulic fluid to working chambers alternately
EP1736662B1 (en) Check valve, especially for a high pressure pump of a fuel injection device for an internal combustion engine
DE2111645A1 (en) Piston pump operated by compressed air, in particular pressure fluid pump for hydraulic winches
EP1088985A3 (en) High pressure fuel injector for an internal combustion engine
EP1243785A3 (en) Fuel injection system for internal combustion engine
EP1239146A3 (en) Fuel injection system for internal combustion engine
EP2148080A1 (en) Fuel injection valve device
DE102011008128B4 (en) Reciprocating internal combustion engine with variable compression ratio
DE20110130U1 (en) Fuel injection device for an internal combustion engine
DE4432635A1 (en) Fuel injection device for a two-stroke internal combustion engine
EP1236884A3 (en) Fuel injection device for internal combustion engines
EP0346607A3 (en) Hydraulic control device for fuel injection systems of internal combustion engines
DE19613404A1 (en) IC engine fuel injection pump timing control device

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

RIC1 Information provided on ipc code assigned before grant

Ipc: 7F 02M 59/46 B

Ipc: 7F 02M 63/00 B

Ipc: 7F 02M 47/02 A

17P Request for examination filed

Effective date: 20040721

AKX Designation fees paid

Designated state(s): DE FR GB TR

17Q First examination report despatched

Effective date: 20050103

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: 20050514