EP0178428A3 - Electrically controlled monobloc injection pump and nozzle for the fuel injection of diesel engines - Google Patents

Electrically controlled monobloc injection pump and nozzle for the fuel injection of diesel engines Download PDF

Info

Publication number
EP0178428A3
EP0178428A3 EP85110504A EP85110504A EP0178428A3 EP 0178428 A3 EP0178428 A3 EP 0178428A3 EP 85110504 A EP85110504 A EP 85110504A EP 85110504 A EP85110504 A EP 85110504A EP 0178428 A3 EP0178428 A3 EP 0178428A3
Authority
EP
European Patent Office
Prior art keywords
conduit
pump
overflow
injection
section
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
EP85110504A
Other languages
German (de)
Other versions
EP0178428B1 (en
EP0178428A2 (en
Inventor
Jean Leblanc
Jean Pigeroulet
Francois Rossignol
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
Priority to AT85110504T priority Critical patent/ATE42612T1/en
Publication of EP0178428A2 publication Critical patent/EP0178428A2/en
Publication of EP0178428A3 publication Critical patent/EP0178428A3/en
Application granted granted Critical
Publication of EP0178428B1 publication Critical patent/EP0178428B1/en
Expired 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
    • 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
    • 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
    • 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
    • F02M57/023—Injectors structurally combined with fuel-injection pumps characterised by the pump drive mechanical
    • 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
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • F02M59/366—Valves being actuated electrically

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

The unit fuel injector has a pump piston driven at a constant stroke length, which pumps fuel at injection pressure to an injection nozzle as long as an electrically actuated overflow valve blocks the flow of the fuel flowing from the pump work chamber to a low-pressure chamber via an overflow conduit. The overflow valve is inserted between a first section which communicates continuously with the pump work chamber and a second section leading to the low-pressure chamber of the overflow conduit and is secured to a housing part laterally projecting from the pump housing. The first section of the overflow conduit comprises a connecting bore leading away from the pump work chamber, a control conduit controlled by the overflow valve, and a transverse conduit connecting these two. The transverse conduit extends from the housing side remote from the projecting housing part to the control conduit, crossing through the cylinder bore and in every stroke position of the pump piston is sealed off, without additional sealing means, by the jacket face of the pump piston. The unit fuel injector is particularly suitable for high-pressure injection in Diesel engines.
EP85110504A 1984-09-14 1985-08-21 Electrically controlled monobloc injection pump and nozzle for the fuel injection of diesel engines Expired EP0178428B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85110504T ATE42612T1 (en) 1984-09-14 1985-08-21 ELECTRICALLY CONTROLLED PUMP NOZZLE FOR FUEL INJECTION IN DIESEL ENGINES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843433710 DE3433710A1 (en) 1984-09-14 1984-09-14 ELECTRICALLY CONTROLLED PUMPEDUESE FOR FUEL INJECTION IN DIESEL INTERNAL COMBUSTION ENGINES
DE3433710 1984-09-14

Publications (3)

Publication Number Publication Date
EP0178428A2 EP0178428A2 (en) 1986-04-23
EP0178428A3 true EP0178428A3 (en) 1987-12-16
EP0178428B1 EP0178428B1 (en) 1989-04-26

Family

ID=6245358

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85110504A Expired EP0178428B1 (en) 1984-09-14 1985-08-21 Electrically controlled monobloc injection pump and nozzle for the fuel injection of diesel engines

Country Status (5)

Country Link
US (1) US4669659A (en)
EP (1) EP0178428B1 (en)
JP (1) JPS6172869A (en)
AT (1) ATE42612T1 (en)
DE (2) DE3433710A1 (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3629754C2 (en) * 1986-09-01 1994-07-14 Bosch Gmbh Robert Device for generating pilot injections in pump nozzles
DE3629751C2 (en) * 1986-09-01 1998-07-02 Bosch Gmbh Robert Pre-injection device for internal combustion engines
FR2605055B1 (en) * 1986-10-08 1991-09-27 Daimler Benz Ag METHOD FOR DIRECT FUEL INJECTION FOR A DIESEL ENGINE
GB8828157D0 (en) * 1988-12-02 1989-01-05 Lucas Ind Plc Fuel injection nozzles
US5011079A (en) * 1989-02-27 1991-04-30 Cummins Engine Company, Inc. Unit injector and drive train with improved push rod-plunger connection
DE3924127A1 (en) * 1989-07-20 1991-01-31 Bosch Gmbh Robert FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES
JP2734132B2 (en) * 1989-11-06 1998-03-30 トヨタ自動車株式会社 Unit injector
US5072709A (en) * 1990-03-29 1991-12-17 Cummins Engine Co., Inc. Fuel injection for an internal combustion engine
GB9026838D0 (en) * 1990-12-11 1991-01-30 Lucas Ind Plc Fuel pump
US5485823A (en) * 1990-12-11 1996-01-23 Lucas Industries Public Limited Company Fuel pump having a leaked fuel conveying structure
GB9026840D0 (en) * 1990-12-11 1991-01-30 Lucas Ind Plc Fuel pump
DE4127003A1 (en) * 1991-08-16 1993-02-18 Bosch Gmbh Robert ELECTRICALLY CONTROLLED PUMPEDUESE FOR FUEL INJECTION DEVICES IN INTERNAL COMBUSTION ENGINES
DE69121904D1 (en) * 1991-10-11 1996-10-10 Caterpillar Inc DAMPED ACTUATING AND VALVE ARRANGEMENT FOR AN ELECTRONICALLY CONTROLLED INJECTION UNIT
US5385301A (en) * 1992-10-28 1995-01-31 Zexel Corporation Fuel injector with spill off for terminating injection
DE4237726C2 (en) * 1992-11-09 1993-12-23 Hermann Dr Ing Golle Pump nozzle for fuel injection for internal combustion engines
US5651501A (en) * 1993-12-23 1997-07-29 Caterpillar Inc. Fluid damping of a valve assembly
US5862995A (en) * 1996-04-01 1999-01-26 Diesel Technology Company High pressure fluid passage sealing for internal combustion engine fuel injectors and method of making same
US5918630A (en) * 1998-01-22 1999-07-06 Cummins Engine Company, Inc. Pin-within-a-sleeve three-way solenoid valve with side load reduction
US6109536A (en) * 1998-05-14 2000-08-29 Caterpillar Inc. Fuel injection system with cyclic intermittent spray from nozzle
DE19918984A1 (en) * 1999-04-27 2000-11-02 Deutz Ag Fuel supply system of an internal combustion engine
DE10055271A1 (en) * 2000-11-08 2002-05-23 Bosch Gmbh Robert Pressure / stroke controlled injector with hydraulic translator
DE10102234A1 (en) * 2001-01-19 2002-07-25 Bosch Gmbh Robert High pressure fuel supply unit, for an IC motor with fuel injection, has a drilling through the valve body to take a piston with a sealing section against the guide section of the drilling, with a hydraulic piston centering action
DE10305187A1 (en) * 2003-02-08 2004-08-19 Robert Bosch Gmbh Fuel injection device, in particular for internal combustion engines with direct fuel injection
DE102017222171A1 (en) * 2017-12-07 2019-06-13 Robert Bosch Gmbh Fuel delivery device for cryogenic fuels

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4392612A (en) * 1982-02-19 1983-07-12 General Motors Corporation Electromagnetic unit fuel injector
GB2133479A (en) * 1983-01-12 1984-07-25 Gen Motors Corp Electromagnetic unit fuel injector

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4540122A (en) * 1983-10-26 1985-09-10 General Motors Corporation Electromagnetic unit fuel injector with pivotable armature
US4568021A (en) * 1984-04-02 1986-02-04 General Motors Corporation Electromagnetic unit fuel injector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4392612A (en) * 1982-02-19 1983-07-12 General Motors Corporation Electromagnetic unit fuel injector
GB2133479A (en) * 1983-01-12 1984-07-25 Gen Motors Corp Electromagnetic unit fuel injector

Also Published As

Publication number Publication date
DE3433710A1 (en) 1986-03-27
ATE42612T1 (en) 1989-05-15
JPS6172869A (en) 1986-04-14
EP0178428B1 (en) 1989-04-26
JPH0551064B2 (en) 1993-07-30
DE3569784D1 (en) 1989-06-01
US4669659A (en) 1987-06-02
EP0178428A2 (en) 1986-04-23

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