EP0967388A3 - Improved injection device in diesel engines of the common-rail type - Google Patents

Improved injection device in diesel engines of the common-rail type Download PDF

Info

Publication number
EP0967388A3
EP0967388A3 EP99110390A EP99110390A EP0967388A3 EP 0967388 A3 EP0967388 A3 EP 0967388A3 EP 99110390 A EP99110390 A EP 99110390A EP 99110390 A EP99110390 A EP 99110390A EP 0967388 A3 EP0967388 A3 EP 0967388A3
Authority
EP
European Patent Office
Prior art keywords
fuel
chambers
conduit
chamber
plunger
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.)
Granted
Application number
EP99110390A
Other languages
German (de)
French (fr)
Other versions
EP0967388B1 (en
EP0967388A2 (en
Inventor
Marino Sorgo
Marino Nobile
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.)
Waertsilae Nsd Italia SpA
Original Assignee
WAERTSILAE ITALIA SpA
WAERTSILAE ITALIA SpA
Wartsila Italia SpA
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 WAERTSILAE ITALIA SpA, WAERTSILAE ITALIA SpA, Wartsila Italia SpA filed Critical WAERTSILAE ITALIA SpA
Publication of EP0967388A2 publication Critical patent/EP0967388A2/en
Publication of EP0967388A3 publication Critical patent/EP0967388A3/en
Application granted granted Critical
Publication of EP0967388B1 publication Critical patent/EP0967388B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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

Abstract

Fuel injector for an internal combustion engine, comprising a valve body provided with an inner housing, a therein sliding plunger, in which there are arranged at least a first and a second chamber, three distinct conduits adapted to convey a flow of fuel from a high-pressure source to one of said chambers and a flow of fuel from one of said chambers to the needle valve, in which the outer walls of the plunger are slidably adhering to inner walls of said housing so as to prevent fuel from anyhow leaking or seeping between said two chambers through passages between the plunger and said walls. The outflow section connecting said first conduit with said third conduit within the second chamber is of the same order of magnitude as the outflow section of said needle valve and is further significantly smaller than the outflow section connecting said second conduit within the first chamber. <IMAGE>
EP99110390A 1998-06-22 1999-05-28 Improved injection device in diesel engines of the common-rail type Expired - Lifetime EP0967388B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1998PN000046A IT1305511B1 (en) 1998-06-22 1998-06-22 INJECTION DEVICE PERFECTED IN DIESEL CALLED COMMON RAIL ENGINES
ITPN980046 1998-06-22

Publications (3)

Publication Number Publication Date
EP0967388A2 EP0967388A2 (en) 1999-12-29
EP0967388A3 true EP0967388A3 (en) 2003-03-12
EP0967388B1 EP0967388B1 (en) 2005-01-19

Family

ID=11395396

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99110390A Expired - Lifetime EP0967388B1 (en) 1998-06-22 1999-05-28 Improved injection device in diesel engines of the common-rail type

Country Status (4)

Country Link
EP (1) EP0967388B1 (en)
AT (1) ATE287499T1 (en)
DE (1) DE69923256T2 (en)
IT (1) IT1305511B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1793121B1 (en) 2002-07-01 2009-01-14 Mitsubishi Heavy Industries, Ltd. Fuel injector and diesel engine comprising the same
DE10241445A1 (en) * 2002-09-06 2004-03-18 Daimlerchrysler Ag Fuel injection control valve has first valve component which with regard to HP flow direction is installed before first sealing face and second valve component with regard to LP flow direction is located after second sealing face
IT1403006B1 (en) * 2010-12-06 2013-09-27 O M T Ohg Torino S P A HIGH-LIFE OPERATING PULVERIZER FOR HIGH-PRESSURE MECHANICAL INJECTORS OPERATING WITH HEAVY FUEL

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5094215A (en) * 1990-10-03 1992-03-10 Cummins Engine Company, Inc. Solenoid controlled variable pressure injector
GB2295881A (en) * 1994-11-29 1996-06-12 Lucas Ind Plc Control valve
EP0728969A1 (en) * 1995-02-21 1996-08-28 Lucas Industries Public Limited Company Valve
US5651346A (en) * 1994-12-22 1997-07-29 Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh Accumulator-type injection system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5094215A (en) * 1990-10-03 1992-03-10 Cummins Engine Company, Inc. Solenoid controlled variable pressure injector
GB2295881A (en) * 1994-11-29 1996-06-12 Lucas Ind Plc Control valve
US5651346A (en) * 1994-12-22 1997-07-29 Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh Accumulator-type injection system
EP0728969A1 (en) * 1995-02-21 1996-08-28 Lucas Industries Public Limited Company Valve

Also Published As

Publication number Publication date
DE69923256D1 (en) 2005-02-24
ATE287499T1 (en) 2005-02-15
ITPN980046A1 (en) 1999-12-22
EP0967388B1 (en) 2005-01-19
IT1305511B1 (en) 2001-05-09
EP0967388A2 (en) 1999-12-29
DE69923256T2 (en) 2005-06-23

Similar Documents

Publication Publication Date Title
EP1063398A3 (en) Piston for a direct injection gasoline engine
AU2001254544A1 (en) Gaseous and liquid fuel injector with a two-way hydraulic fluid control valve
EP1111229A3 (en) Fuel injection valve for reciprocating internal combustion engine
WO1999000595A3 (en) Fuel injection system
PL363037A1 (en) Fuel injection valve for internal combustion engines
AU9495198A (en) Fast acting exhaust gas recirculation system
EP1688611A3 (en) Fuel injector with direct needle control for an internal combustion engine
ATE99386T1 (en) FUEL INJECTOR.
DE59608924D1 (en) FUEL INJECTION
WO2001051797A3 (en) Control valve for an injector in a fuel injection system for internal combustion engines with pressure amplification in the control chamber
DE50010227D1 (en) FUEL INJECTION SYSTEM FOR A COMBUSTION ENGINE
GB2333327B (en) High pressure pump for the purpose of supplying fuel in fuel injection systems of internal combustion engines
FI20000985A0 (en) Procedure for locating fuel leakage at an internal combustion engine
AU2003214402A1 (en) Fuel system
CA2495765A1 (en) Gas feeding system for an internal combustion engine, having an improved pressure reducing valve
DE50112374D1 (en) Common-rail-injektor
ATE285035T1 (en) FUEL INJECTION SYSTEM
WO2002063162A3 (en) Device for damping pressure pulsations in high-pressure injection systems
EP0967388A3 (en) Improved injection device in diesel engines of the common-rail type
EP0887526A3 (en) Direct injection type engine and cooling system therefor
GB2327713A (en) Direct-injection fuel injection valve with solenoid valve control for a multicylinder i.c. engine
US20040211394A1 (en) Fuel return passage for an internal combustion engine
EP0916830A3 (en) Pilot injection control apparatus for an internal combustion engine
ATE286208T1 (en) STROKE AND PRESSURE CONTROLLED INJECTOR WITH DOUBLE SLIDE
WO2001055568A3 (en) Device for injecting natural gas into a cylinder combustion chamber

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

AX Request for extension of the european patent

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

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: WAERTSILAE NSD ITALIA S.P.A.

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

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17P Request for examination filed

Effective date: 20030623

17Q First examination report despatched

Effective date: 20030818

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

AKX Designation fees paid

Designated state(s): AT DE DK ES FR GB IT

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

RIN1 Information on inventor provided before grant (corrected)

Inventor name: NOBILE, MARINO

Inventor name: SORGO, MARINO

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE DK ES FR GB IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050119

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050119

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050119

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 69923256

Country of ref document: DE

Date of ref document: 20050224

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050419

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050528

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20051020

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20050528

EN Fr: translation not filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20170523

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20170526

Year of fee payment: 19

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69923256

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181201

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180528