ATE76165T1 - INJECTION DEVICE FOR DIESEL ENGINES. - Google Patents

INJECTION DEVICE FOR DIESEL ENGINES.

Info

Publication number
ATE76165T1
ATE76165T1 AT88890075T AT88890075T ATE76165T1 AT E76165 T1 ATE76165 T1 AT E76165T1 AT 88890075 T AT88890075 T AT 88890075T AT 88890075 T AT88890075 T AT 88890075T AT E76165 T1 ATE76165 T1 AT E76165T1
Authority
AT
Austria
Prior art keywords
pump piston
injection pump
working chamber
piston
chamber
Prior art date
Application number
AT88890075T
Other languages
German (de)
Inventor
Gottfried Dipl-Ing Haider
Original Assignee
Automotive Diesel 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 Automotive Diesel Gmbh filed Critical Automotive Diesel Gmbh
Application granted granted Critical
Publication of ATE76165T1 publication Critical patent/ATE76165T1/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
    • 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

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>
AT88890075T 1987-03-26 1988-03-24 INJECTION DEVICE FOR DIESEL ENGINES. ATE76165T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT74687 1987-03-26

Publications (1)

Publication Number Publication Date
ATE76165T1 true ATE76165T1 (en) 1992-05-15

Family

ID=3498711

Family Applications (1)

Application Number Title Priority Date Filing Date
AT88890075T ATE76165T1 (en) 1987-03-26 1988-03-24 INJECTION DEVICE FOR DIESEL ENGINES.

Country Status (3)

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

Family Cites Families (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
US4083345A (en) * 1975-10-14 1978-04-11 Stanadyne, Inc. Fuel injection pump
DE3215047C2 (en) * 1982-04-22 1984-05-03 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Fuel injection system for an internal combustion engine
JPS61272461A (en) * 1985-05-29 1986-12-02 Toyota Motor Corp Fuel injection valve for internal-combustion engine

Also Published As

Publication number Publication date
EP0284601A2 (en) 1988-09-28
DE3870956D1 (en) 1992-06-17
EP0284601A3 (en) 1989-09-13
EP0284601B1 (en) 1992-05-13

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Legal Events

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