EP0284601A3 - Injection device for a diesel engine - Google Patents

Injection device for a diesel engine Download PDF

Info

Publication number
EP0284601A3
EP0284601A3 EP88890075A EP88890075A EP0284601A3 EP 0284601 A3 EP0284601 A3 EP 0284601A3 EP 88890075 A EP88890075 A EP 88890075A EP 88890075 A EP88890075 A EP 88890075A EP 0284601 A3 EP0284601 A3 EP 0284601A3
Authority
EP
European Patent Office
Prior art keywords
pump piston
injection pump
working chamber
piston
chamber
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
EP88890075A
Other languages
German (de)
Other versions
EP0284601A2 (en
EP0284601B1 (en
Inventor
Gottfried Dipl.-Ing. Haider
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.)
Automotive Diesel GmbH
Original Assignee
Voestalpine Metal Forming 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 Voestalpine Metal Forming GmbH filed Critical Voestalpine Metal Forming GmbH
Publication of EP0284601A2 publication Critical patent/EP0284601A2/en
Publication of EP0284601A3 publication Critical patent/EP0284601A3/en
Application granted granted Critical
Publication of EP0284601B1 publication Critical patent/EP0284601B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
    • F02M39/005—Arrangements of fuel feed-pumps with respect to fuel injection apparatus
    • 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
    • F02M59/16—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps characterised by having multi-stage compression of fuel
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Valve Device For Special Equipments (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)

Abstract

In an injection device for diesel engines, in particular in a pump nozzle (1, 41), in which the fuel is conveyed by a pilot pump (32) into an intake chamber (13, 51) which can be connected to the working chamber (9) of the injection pump piston (3) by way of at least one control hole (8) in the pump piston sleeve (7), the conveying end (i) of the injection pump piston 3 being determined by controlling the fuel through the control hole (8) or control holes into the intake chamber (13, 51), at least one displacement piston (17, 46) carried in a cylinder (21, 47) and driven to produce a reciprocating motion is provided, whose working chamber (23, 49) is always openly connected to the intake chamber (13), the displacement piston (17, 46) reducing its working chamber (23, 49) before the start of pumping (h) by the injection pump piston (3) and enlarging it on or after the completion of pumping (i) by the injection pump piston (3). In this way the fuel pressure in the intake chamber (13) is raised before the start of pumping (h) by the injection pump piston (3) and improves the filling of the working chamber (9) of the latter. When, on completion of pumping (i), the fuel emerges from the working chamber (9) of the injection pump piston (3) through the control holes (8) with great energy into the intake chamber (13, 51), the admission volume of the intake chamber is increased due to the increase in the working chamber (23, 49) of the displacement piston (17, 46), thereby reducing the force of the resulting pressure spray. <IMAGE>
EP88890075A 1987-03-26 1988-03-24 Injection device for a diesel engine Expired - Lifetime EP0284601B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT74687 1987-03-26
AT746/87 1987-03-26

Publications (3)

Publication Number Publication Date
EP0284601A2 EP0284601A2 (en) 1988-09-28
EP0284601A3 true EP0284601A3 (en) 1989-09-13
EP0284601B1 EP0284601B1 (en) 1992-05-13

Family

ID=3498711

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88890075A Expired - Lifetime EP0284601B1 (en) 1987-03-26 1988-03-24 Injection device for a diesel engine

Country Status (3)

Country Link
EP (1) EP0284601B1 (en)
AT (1) ATE76165T1 (en)
DE (1) DE3870956D1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB507940A (en) * 1938-02-05 1939-06-23 Austin Motor Co Ltd Improvements in or relating to internal combustion engines of the compression ignition type
US2592367A (en) * 1946-11-13 1952-04-08 American Bosch Corp Fuel injection system
FR2328117A1 (en) * 1975-10-14 1977-05-13 Stanadyne Inc FUEL INJECTION PUMP
DE3215047A1 (en) * 1982-04-22 1983-11-03 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Injection system on an internal combustion engine
DE3617786A1 (en) * 1985-05-29 1986-12-04 Toyota Jidosha K.K., Toyota, Aichi FUEL INJECTION VALVE FOR AN INTERNAL COMBUSTION ENGINE

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB507940A (en) * 1938-02-05 1939-06-23 Austin Motor Co Ltd Improvements in or relating to internal combustion engines of the compression ignition type
US2592367A (en) * 1946-11-13 1952-04-08 American Bosch Corp Fuel injection system
FR2328117A1 (en) * 1975-10-14 1977-05-13 Stanadyne Inc FUEL INJECTION PUMP
DE3215047A1 (en) * 1982-04-22 1983-11-03 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Injection system on an internal combustion engine
DE3617786A1 (en) * 1985-05-29 1986-12-04 Toyota Jidosha K.K., Toyota, Aichi FUEL INJECTION VALVE FOR AN INTERNAL COMBUSTION ENGINE

Also Published As

Publication number Publication date
EP0284601A2 (en) 1988-09-28
EP0284601B1 (en) 1992-05-13
ATE76165T1 (en) 1992-05-15
DE3870956D1 (en) 1992-06-17

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