WO2012075483A3 - Check valve for high-pressure fuel injector - Google Patents

Check valve for high-pressure fuel injector Download PDF

Info

Publication number
WO2012075483A3
WO2012075483A3 PCT/US2011/063255 US2011063255W WO2012075483A3 WO 2012075483 A3 WO2012075483 A3 WO 2012075483A3 US 2011063255 W US2011063255 W US 2011063255W WO 2012075483 A3 WO2012075483 A3 WO 2012075483A3
Authority
WO
WIPO (PCT)
Prior art keywords
chamber
nozzle
check valve
pressurization
fluid communication
Prior art date
Application number
PCT/US2011/063255
Other languages
French (fr)
Other versions
WO2012075483A2 (en
Inventor
Keith Steven Schulz
Original Assignee
International Engine Intellectual Property Company, Llc
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 International Engine Intellectual Property Company, Llc filed Critical International Engine Intellectual Property Company, Llc
Priority to CN2011800580707A priority Critical patent/CN103237981A/en
Publication of WO2012075483A2 publication Critical patent/WO2012075483A2/en
Publication of WO2012075483A3 publication Critical patent/WO2012075483A3/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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/025—Injectors structurally combined with fuel-injection pumps characterised by the pump drive hydraulic, e.g. with pressure amplification
    • 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
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/46—Valves
    • F02M59/462—Delivery 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
    • 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
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/46—Valves
    • F02M59/464—Inlet valves of the check valve type

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

A fuel injector comprises a pressurization section defining a variable-volume pressurization chamber. A nozzle section has a longitudinal bore, a nozzle chamber, an orifice and a nozzle valve. The nozzle valve is slides in the longitudinal bore between a first position that blocks fluid communication between the nozzle chamber and the orifice, and a second position that opens fluid communication between the nozzle chamber and the orifice. A check valve is between the pressurization chamber and the nozzle chamber. The check valve comprises a housing comprising an upper portion, a lower portion and a middle portion. The housing defines a check valve chamber. A valve member in the check valve chamber hydro-pneumatically moves between an open position that allows fluid communication from the pressurization chamber to the nozzle chamber and a closed position that prevents fluid communication from the nozzle chamber to the pressurization chamber.
PCT/US2011/063255 2010-12-03 2011-12-05 Check valve for high-pressure fuel injector WO2012075483A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011800580707A CN103237981A (en) 2010-12-03 2011-12-05 Check valve for high-pressure fuel injector

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US41958510P 2010-12-03 2010-12-03
US61/419,585 2010-12-03

Publications (2)

Publication Number Publication Date
WO2012075483A2 WO2012075483A2 (en) 2012-06-07
WO2012075483A3 true WO2012075483A3 (en) 2013-04-18

Family

ID=46172607

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/063255 WO2012075483A2 (en) 2010-12-03 2011-12-05 Check valve for high-pressure fuel injector

Country Status (2)

Country Link
CN (1) CN103237981A (en)
WO (1) WO2012075483A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9856836B2 (en) 2015-06-25 2018-01-02 Woodward, Inc. Variable fluid flow apparatus with integrated filter
GB2574841A (en) * 2018-06-19 2019-12-25 Rklab Ag Injector apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4513719A (en) * 1982-09-22 1985-04-30 Kabushiki Kaisha Komatsu Seisakusho Fuel injector
US5923429A (en) * 1998-03-05 1999-07-13 International Business Machines Corporation Apparatus for monitoring in-situ the thickness of a film during film deposition and a method thereof
US6363913B1 (en) * 2000-06-09 2002-04-02 Caterpillar Inc. Solid state lift for micrometering in a fuel injector
US6568602B1 (en) * 2000-05-23 2003-05-27 Caterpillar Inc Variable check stop for micrometering in a fuel injector

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4741478A (en) * 1986-11-28 1988-05-03 General Motors Corporation Diesel unit fuel injector with spill assist injection needle valve closure
US5181494A (en) * 1991-10-11 1993-01-26 Caterpillar, Inc. Hydraulically-actuated electronically-controlled unit injector having stroke-controlled piston and methods of operation
US5287838A (en) * 1993-02-26 1994-02-22 Caterpillar Inc. Compact reverse flow check valve assembly for a unit fluid pump-injector
DE19516565C2 (en) * 1995-05-05 1998-07-30 Orange Gmbh Injection valve of an internal combustion engine
US5823429A (en) * 1996-07-12 1998-10-20 Servojet Products International Hybrid hydraulic electronic unit injector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4513719A (en) * 1982-09-22 1985-04-30 Kabushiki Kaisha Komatsu Seisakusho Fuel injector
US5923429A (en) * 1998-03-05 1999-07-13 International Business Machines Corporation Apparatus for monitoring in-situ the thickness of a film during film deposition and a method thereof
US6568602B1 (en) * 2000-05-23 2003-05-27 Caterpillar Inc Variable check stop for micrometering in a fuel injector
US6363913B1 (en) * 2000-06-09 2002-04-02 Caterpillar Inc. Solid state lift for micrometering in a fuel injector

Also Published As

Publication number Publication date
WO2012075483A2 (en) 2012-06-07
CN103237981A (en) 2013-08-07

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