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1. WO2000039452 - FUEL INJECTION DEVICE

Publication Number WO/2000/039452
Publication Date 06.07.2000
International Application No. PCT/DE1999/003661
International Filing Date 18.11.1999
IPC
F02M 47/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
47Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
02of 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
F02M 59/46 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
59Pumps specially adapted for fuel-injection and not provided for in groups F02M39/-F02M57/126
44Details, component parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02-F02M59/42165
46Valves
F02M 63/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
63Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/-F02M57/143; Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/-F02M61/193
02Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
CPC
F02M 2200/703
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
2200Details of fuel-injection apparatus, not otherwise provided for
70Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
703hydraulic
F02M 2547/003
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
2547Special features for fuel-injection valves actuated by fluid pressure
003Valve inserts containing control chamber and valve piston
F02M 47/027
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
47Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
02of 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
027Electrically actuated valves draining the chamber to release the closing pressure
F02M 63/0026
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
63Other 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
0012Valves
0014characterised by the valve actuating means
0015electrical, e.g. using solenoid
0026using piezoelectric or magnetostrictive actuators
F02M 63/0205
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
63Other 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
02Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
0205for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors
Applicants
  • ROBERT BOSCH GMBH [DE/DE]; Postfach 30 02 20 D-70442 Stuttgart, DE (AllExceptUS)
  • BOECKING, Friedrich [DE/DE]; DE (UsOnly)
Inventors
  • BOECKING, Friedrich; DE
Priority Data
198 60 476.928.12.1998DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) KRAFTSTOFFEINSPRITZANLAGE
(EN) FUEL INJECTION DEVICE
(FR) DISPOSITIF D'INJECTION DE CARBURANT
Abstract
(DE)
Eine Kraftstoffeinspritzanlage für eine wenigstens einen Zylinder aufweisende Brennkraftmaschine weist für jeden Zylinder eine Einspritzeinheit (1) und für jede Einspritzeinheit (1) ein Durchflussbebrenzungsventil (14) auf, das die Zuführung von Kraftstoff zu einer in der Einspritzeinheit (1) enthaltenden Einspritzdüse (7) sperrt, wenn der aus dem Durchflussbegrenzungsventil (14) abfliessende Kraftstoff eine Kraftstoffmaximalmenge erreicht. Um bei einer solchen Kraftstoffeinspritzanlage die Kraftstoffmaximalmenge zu reduzieren, wird erfindungsgemäss vorgeschlagen, das Durchflussbegrenzungsventil (14) in einer Düsenzulaufleitung (13) anzuordnen, über welche die Einspritzdüse (7) mit einer Hochdruckkraftstoffzuführung (2) kommuniziert.
(EN)
The invention relates to a fuel injection device for an internal combustion engine having at least one cylinder, each cylinder having an injection unit (1) and each injection unit (1) having a flow limiting valve (14) that blocks the fuel supply to the injection nozzle (7) contained in the injection unit (1) when the fuel flowing out of the flow limiting valve (14) reaches a maximum fuel volume. According to the invention, in order to reduce the maximum fuel volume in said fuel injection device, the flow limiting valve (14) is disposed in a nozzle admission line (13) by means of which the injection nozzle (7) communicates with a high pressure fuel delivery line (2).
(FR)
L'invention concerne un dispositif d'injection de carburant pour moteur à combustion interne comportant au moins un cylindre, présentant, pour chaque cylindre, une unité d'injection (1) et, pour chaque unité d'injection (1), une vanne de limitation de débit (14) bloquant l'alimentation de carburant à un gicleur d'injection (7) contenu dans l'unité d'injection (1), lorsque le carburant s'écoulant de ladite vanne (14) atteint un débit maximum. En vue de réduire la quantité maximale de carburant pour un tel dispositif d'injection, l'invention est caractérisée en ce que la vanne de limitation de débit (14) est montée dans un conduit d'amenée (13) au gicleur d'injection, conduit par l'intermédiaire duquel ledit gicleur d'injection (7) communique avec une arrivée de carburant sous haute pression (2).
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