IT1244895B - FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINE, AIR COMPRESSION, DIRECT INJECTION - Google Patents

FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINE, AIR COMPRESSION, DIRECT INJECTION

Info

Publication number
IT1244895B
IT1244895B ITRM910018A ITRM910018A IT1244895B IT 1244895 B IT1244895 B IT 1244895B IT RM910018 A ITRM910018 A IT RM910018A IT RM910018 A ITRM910018 A IT RM910018A IT 1244895 B IT1244895 B IT 1244895B
Authority
IT
Italy
Prior art keywords
injector
needle
internal combustion
air compression
bush
Prior art date
Application number
ITRM910018A
Other languages
Italian (it)
Inventor
Frank Thoma
Gunter Kohl
Karl-Heinz Hoffmann
Walter Putz
Original Assignee
Daimler Benz 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 Daimler Benz Ag filed Critical Daimler Benz Ag
Publication of ITRM910018A0 publication Critical patent/ITRM910018A0/en
Publication of ITRM910018A1 publication Critical patent/ITRM910018A1/en
Application granted granted Critical
Publication of IT1244895B publication Critical patent/IT1244895B/en

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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/08—Injectors peculiar thereto
    • F02M45/083—Having two or more closing springs acting on injection-valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/14—Direct injection into combustion chamber
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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

L'invenzione concerne una valvola di iniezione di carburante per motori a combustione interna, a compressione d'aria, ad iniezione diretta, con un portainiettore a due molle di cui una molla di chiusura agisce contro l'anticipo di corsa dell'ago dell'iniettore e l'altra molla di chiusura contrasta, inoltre, la corsa principale dell'ago dell'iniettore, e con una fessura anulare eseguita in modo ridotto tra il corpo dell'iniettore e l'ago dello stesso per il passaggio abbondantemente indisturbato tra entrambe le parti oppure con una bussola doppia bipartita, la cui bussola interna è strutturata come bussola dilatabile e, indipendente dalle variazioni di temperatura, mantiene una distanza intermedia dall'ago dell'iniettore almeno approssimativamente uguale, corrispondente all'anticipo di corsa.The invention relates to a fuel injection valve for internal combustion, air compression, direct injection engines, with a two-spring injector holder, one of which a closing spring acts against the advance travel of the needle of the moreover, the injector and the other closing spring counteracts the main stroke of the injector needle, and with an annular slot made in a reduced way between the injector body and the needle of the same for the abundant undisturbed passage between both the parts or with a double bipartite bush, whose internal bush is structured as an expandable bush and, independent of temperature variations, maintains an intermediate distance from the injector needle at least approximately equal, corresponding to the advance of travel.

ITRM910018A 1990-01-17 1991-01-11 FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINE, AIR COMPRESSION, DIRECT INJECTION IT1244895B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4001103A DE4001103C2 (en) 1990-01-17 1990-01-17 Fuel injection valve for air-compressing direct-injection internal combustion engines

Publications (3)

Publication Number Publication Date
ITRM910018A0 ITRM910018A0 (en) 1991-01-11
ITRM910018A1 ITRM910018A1 (en) 1992-07-11
IT1244895B true IT1244895B (en) 1994-09-13

Family

ID=6398184

Family Applications (1)

Application Number Title Priority Date Filing Date
ITRM910018A IT1244895B (en) 1990-01-17 1991-01-11 FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINE, AIR COMPRESSION, DIRECT INJECTION

Country Status (4)

Country Link
DE (1) DE4001103C2 (en)
FR (1) FR2657123B1 (en)
GB (1) GB2240138B (en)
IT (1) IT1244895B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4434892A1 (en) * 1994-09-29 1996-04-11 Siemens Ag Injector
DE4440182C2 (en) * 1994-11-10 2003-09-18 Bosch Gmbh Robert Fuel injection valve for internal combustion engines
GB9917997D0 (en) * 1999-07-30 1999-09-29 Lucas Ind Plc Fuel injector
DE102005036826B4 (en) * 2005-08-04 2007-04-26 Siemens Ag Fuel injector for determining the combustion chamber pressure in an internal combustion engine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3876152A (en) * 1967-01-13 1975-04-08 Vernon D Roosa Noncoking fuel injection nozzle
CH475476A (en) * 1967-05-24 1969-07-15 Sulzer Ag Fuel injection valve of a diesel internal combustion engine
CS154732B1 (en) * 1971-09-15 1974-04-30
DE2742230C2 (en) * 1977-09-20 1986-02-20 Institut für Motorenbau Prof. Huber e.V., 8000 München Fuel injector for an internal combustion engine
DE3610658A1 (en) * 1985-11-21 1987-05-27 Bosch Gmbh Robert FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES

Also Published As

Publication number Publication date
ITRM910018A1 (en) 1992-07-11
GB2240138B (en) 1994-06-22
ITRM910018A0 (en) 1991-01-11
GB9100828D0 (en) 1991-02-27
DE4001103A1 (en) 1991-07-18
FR2657123B1 (en) 1994-06-10
GB2240138A (en) 1991-07-24
DE4001103C2 (en) 1994-04-28
FR2657123A1 (en) 1991-07-19

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970225