ATE53436T1 - INJECTION NOZZLE FOR COMBUSTION ENGINES. - Google Patents

INJECTION NOZZLE FOR COMBUSTION ENGINES.

Info

Publication number
ATE53436T1
ATE53436T1 AT87902302T AT87902302T ATE53436T1 AT E53436 T1 ATE53436 T1 AT E53436T1 AT 87902302 T AT87902302 T AT 87902302T AT 87902302 T AT87902302 T AT 87902302T AT E53436 T1 ATE53436 T1 AT E53436T1
Authority
AT
Austria
Prior art keywords
control piston
injection
valve
hollow needle
recess
Prior art date
Application number
AT87902302T
Other languages
German (de)
Inventor
Gottfried Haider
Original Assignee
Voest Alpine Automotive
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 Voest Alpine Automotive filed Critical Voest Alpine Automotive
Application granted granted Critical
Publication of ATE53436T1 publication Critical patent/ATE53436T1/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
    • F02M45/086—Having more than one injection-valve controlling discharge orifices
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/46—Valves, e.g. injectors, with concentric valve bodies

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

Injection valve for internal combustion engines, provided with a nozzle body (10) with injection holes (11, 12) for the fuel and two coaxial spring-loaded valve needles co-operating with separate injection holes. The external hollow needle (7) has radial bores (14) and the inner valve needle is designed as a control piston (13) of which the jacket, in the region of the openings of the radial bores (14) of the hollow needle (7), has control edges formed of an annular recess (15). Leading from the recess in the jacket of the control piston (13) are ducts, or preferably an axial bore (19), which extend to a seating (20), arranged on the control piston (13), of a valve-closing element (21) which co-operates with the control piston, such as for example a tapered element or ball. After a pre-determined travel of the control piston (13) the recess (15) forming the control edges causes a pressure drop and closure of the relevant injection holes (12), as a result of which a separation is achieved between the pre-injection and the main injection initiated by the raising of the hollow needle (7).
AT87902302T 1986-04-15 1987-04-08 INJECTION NOZZLE FOR COMBUSTION ENGINES. ATE53436T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT98886 1986-04-15
PCT/AT1987/000024 WO1987006308A1 (en) 1986-04-15 1987-04-08 Injection valve for internal combustion engines

Publications (1)

Publication Number Publication Date
ATE53436T1 true ATE53436T1 (en) 1990-06-15

Family

ID=3504362

Family Applications (1)

Application Number Title Priority Date Filing Date
AT87902302T ATE53436T1 (en) 1986-04-15 1987-04-08 INJECTION NOZZLE FOR COMBUSTION ENGINES.

Country Status (3)

Country Link
EP (1) EP0262197B1 (en)
AT (1) ATE53436T1 (en)
WO (1) WO1987006308A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5458292A (en) * 1994-05-16 1995-10-17 General Electric Company Two-stage fuel injection nozzle
GB9913314D0 (en) 1999-06-09 1999-08-11 Lucas Ind Plc Fuel injector
GB9914644D0 (en) * 1999-06-24 1999-08-25 Lucas Ind Plc Fuel injector
WO2005073546A1 (en) * 2004-02-02 2005-08-11 Siemens Aktiengesellschaft Nozzle member, and valve
DE102008055177A1 (en) * 2008-12-30 2010-07-01 Robert Bosch Gmbh Fuel injector
DE102009027727A1 (en) * 2009-07-15 2011-01-20 Robert Bosch Gmbh valve assembly
NL1041155B1 (en) * 2015-01-23 2017-01-05 Johan Willem Maria Nooijen Paul Dual Fuel injector and methods.
DE102019103511A1 (en) * 2019-02-12 2020-08-13 Liebherr-Components Deggendorf Gmbh Nozzle for a fuel injector

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE829682C (en) * 1941-10-12 1952-01-28 Bosch Gmbh Robert Injection valve for internal combustion engines
DE1270883B (en) * 1966-10-28 1968-06-20 Bosch Gmbh Robert Fuel injector
DE1284687B (en) * 1967-10-18 1968-12-05 Bosch Gmbh Robert Fuel injection valve for pilot and main injection
DE2710216A1 (en) * 1977-03-09 1978-09-14 Bosch Gmbh Robert FUEL INJECTOR
DE3113475A1 (en) * 1981-04-03 1982-10-21 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection nozzle

Also Published As

Publication number Publication date
WO1987006308A1 (en) 1987-10-22
EP0262197A1 (en) 1988-04-06
EP0262197B1 (en) 1990-06-06

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee