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1. (WO2001006114) FUEL INJECTION VALVE
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2001/006114 International Application No.: PCT/DE2000/002278
Publication Date: 25.01.2001 International Filing Date: 13.07.2000
IPC:
F02M 51/06 (2006.01) ,F02M 61/12 (2006.01) ,F02M 61/16 (2006.01) ,F02M 61/20 (2006.01) ,F02M 63/00 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
M
SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
51
Fuel-injection apparatus characterised by being operated electrically
06
Injectors peculiar thereto
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
M
SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
61
Fuel injectors not provided for in groups F02M39/-F02M57/94
04
having valves
10
Other injectors with elongated valve bodies, i.e. of needle-valve type
12
characterised by the provision of guiding or centring means for valve bodies
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
M
SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
61
Fuel injectors not provided for in groups F02M39/-F02M57/94
16
Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02-F02M61/14132
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
M
SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
61
Fuel injectors not provided for in groups F02M39/-F02M57/94
16
Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02-F02M61/14132
20
Closing valves mechanically, e.g. arrangements of springs or weights
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
M
SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
63
Other 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
Applicants:
REITER, Ferdinand [DE/DE]; DE (UsOnly)
ROBERT BOSCH GMBH [DE/DE]; Postfach 30 02 20 D-70442 Stuttgart, DE (AllExceptUS)
Inventors:
REITER, Ferdinand; DE
Priority Data:
199 32 761.014.07.1999DE
Title (EN) FUEL INJECTION VALVE
(FR) SOUPAPE D'INJECTION DE CARBURANT
(DE) BRENNSTOFFEINSPRITZVENTIL
Abstract:
(EN) The invention relates to a fuel injection valve with a fuel inlet and with an excitable actuator device (1, 2, 26, 35) that actuates a valve closing member (21). The valve further comprises a fixed valve seat (32) that is configured on a valve seat element (29) and with which the valve closing element (21) interacts to open and close the valve. A fuel outlet (33) is located downstream of the valve seat (32). A cylinder-shaped connecting part (16) receives the valve seat element (29) and is provided with an interior longitudinal opening (18). The thin-walled connecting part (16) is provided with at least one radially extending recess (43) in which a dampening element (45) is mounted so that the axial vibrations of the connecting part (16) are dampened, thereby effectively preventing the valve closing member (21) from being rebounded on the valve seat (32). The inventive valve is especially useful for fuel injection systems of mixture-compressing, spark-ignited internal combustion engines.
(FR) La présente invention concerne une soupape d'injection de carburant pourvu d'une entrée de carburant, d'un système de commande (1, 2, 26, 35) qui peut être actionné et par lequel un organe de fermeture de soupape (21) peut se déplacer, d'un siège de soupape (32) fixe qui est formé sur un élément de siège de soupape (29) et avec lequel l'organe de fermeture de soupape (21) coopère afin de fermer et d'ouvrir la soupape, d'une sortie de carburant (33) située en aval du siège de soupape (32), ainsi que d'une partie de raccordement (16) en forme de manchon qui présente une ouverture longitudinale interne (18) et qui accueille l'élément de siège de soupape (29). Cette partie de raccordement (16) à paroi fine présente au moins un évidement (43) qui s'étend radialement et dans lequel est placé un élément d'amortissement (45), de façon que des vibrations axiales de la partie de raccordement (16) sont amorties, ce qui permet d'éviter efficacement un rebond de l'organe de fermeture de soupape (21) sur le siège de soupape (32). Cette soupape est particulièrement adaptée à une utilisation dans des installations d'injection de carburant pour moteurs à combustion interne, à compression du mélange et à allumage commandé.
(DE) Die Erfindung betrifft ein Brennstoffeinspritzventil mit einem Brennstoffeinlass, mit einer erregbaren Betätigungseinrichtung (1, 2, 26, 35), durch das ein Ventilschließglied (21) bewegbar ist, mit einem an einem Ventilsitzelement (29) ausgebildeten festen Ventilsitz (32), mit dem das Ventilschließglied (21) zum Öffnen und Schließen des Ventils zusammenwirkt, mit einem stromabwärts des Ventilsitzes (32) vorgesehenen Brennstoffauslass (33), und mit einem eine innere Längsöffnung (18) aufweisenden und das Ventilsitzelement (29) aufnehmenden hülsenförmigen Anschlussteil (16). Das dünnwandige Anschlussteil (16) weist wenigstens eine radial verlaufende Vertiefung (43) auf, in der ein Dämpfungselement (45) angeordnet ist, so dass Axialschwingungen des Anschlussteils (16) gedämpft werden, wodurch ein Prellen des Ventilschließglieds (21) am Ventilsitz (32) wirkungsvoll verhindert werden kann. Das Ventil eignet sich besonders für den Einsatz in Brennstoffeinspritzanlagen von gemischverdichtenden fremdgezündeten Brennkraftmaschinen.
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Designated States: CZ, JP, US
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: German (DE)
Filing Language: German (DE)