EP1916410A3 - Pilot valve for an injector and injector - Google Patents

Pilot valve for an injector and injector Download PDF

Info

Publication number
EP1916410A3
EP1916410A3 EP07114577A EP07114577A EP1916410A3 EP 1916410 A3 EP1916410 A3 EP 1916410A3 EP 07114577 A EP07114577 A EP 07114577A EP 07114577 A EP07114577 A EP 07114577A EP 1916410 A3 EP1916410 A3 EP 1916410A3
Authority
EP
European Patent Office
Prior art keywords
injector
ball
valve
borehole
pilot valve
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
EP07114577A
Other languages
German (de)
French (fr)
Other versions
EP1916410B1 (en
EP1916410A2 (en
Inventor
Thomas Sebastian
Patrick Mattes
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 EP1916410A2 publication Critical patent/EP1916410A2/en
Publication of EP1916410A3 publication Critical patent/EP1916410A3/en
Application granted granted Critical
Publication of EP1916410B1 publication Critical patent/EP1916410B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • 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
    • 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
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
    • 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
    • F02M63/0012—Valves
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0071—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059 characterised by guiding or centering means in valves including the absence of any guiding means, e.g. "flying arrangements"
    • 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
    • F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
    • F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

The injector has a nozzle needle, a control valve (3) and a piezoelectric actuator, where the valve has a valve unit (35) and controls a hydraulic connection between a control chamber and a fuel return. The valve unit has a ball (37) and a pressure pin (39), where the ball is guided in a guiding borehole (43) of a valve housing (33). A linear contact surface (45) is provided between the ball and the borehole and is interrupted by a flat portion in the ball surface, where the pin is arranged in the borehole.
EP07114577A 2006-10-20 2007-08-20 Pilot valve for an injector and injector Not-in-force EP1916410B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006049533A DE102006049533A1 (en) 2006-10-20 2006-10-20 Piezoelectrically actuated injector for injection system i.e. common rail fuel injection system, has actuator, and control valve with valve unit with ball and pressure pin, where ball is guided in guiding borehole of valve housing

Publications (3)

Publication Number Publication Date
EP1916410A2 EP1916410A2 (en) 2008-04-30
EP1916410A3 true EP1916410A3 (en) 2008-12-17
EP1916410B1 EP1916410B1 (en) 2010-10-20

Family

ID=39110809

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07114577A Not-in-force EP1916410B1 (en) 2006-10-20 2007-08-20 Pilot valve for an injector and injector

Country Status (3)

Country Link
EP (1) EP1916410B1 (en)
AT (1) ATE485444T1 (en)
DE (2) DE102006049533A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009000875A1 (en) * 2009-02-16 2010-08-19 Robert Bosch Gmbh fuel injector

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0042799A2 (en) * 1980-06-23 1981-12-30 The Bendix Corporation Electromagnetic fuel injector
DE3312067A1 (en) * 1983-04-02 1984-10-04 Robert Bosch Gmbh, 7000 Stuttgart ELECTROMAGNETICALLY ACTUABLE VALVE
WO2002023036A1 (en) * 2000-09-18 2002-03-21 L'orange Gmbh Valve configuration for control valves
DE10255328A1 (en) * 2002-11-27 2004-06-17 Robert Bosch Gmbh Valve device, especially for combustion engine fuel injection system, has valve body with two at least approximately spherical elements, each facing at least approximately spherical valve seat region
WO2004097209A1 (en) * 2003-05-02 2004-11-11 Robert Bosch Gmbh Fuel injection valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0042799A2 (en) * 1980-06-23 1981-12-30 The Bendix Corporation Electromagnetic fuel injector
DE3312067A1 (en) * 1983-04-02 1984-10-04 Robert Bosch Gmbh, 7000 Stuttgart ELECTROMAGNETICALLY ACTUABLE VALVE
WO2002023036A1 (en) * 2000-09-18 2002-03-21 L'orange Gmbh Valve configuration for control valves
DE10255328A1 (en) * 2002-11-27 2004-06-17 Robert Bosch Gmbh Valve device, especially for combustion engine fuel injection system, has valve body with two at least approximately spherical elements, each facing at least approximately spherical valve seat region
WO2004097209A1 (en) * 2003-05-02 2004-11-11 Robert Bosch Gmbh Fuel injection valve

Also Published As

Publication number Publication date
EP1916410B1 (en) 2010-10-20
DE502007005398D1 (en) 2010-12-02
ATE485444T1 (en) 2010-11-15
DE102006049533A1 (en) 2008-04-24
EP1916410A2 (en) 2008-04-30

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