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1. (WO2019057387) NOZZLE ASSEMBLY FOR A FUEL INJECTOR, AND FUEL INJECTOR
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Pub. No.: WO/2019/057387 International Application No.: PCT/EP2018/071489
Publication Date: 28.03.2019 International Filing Date: 08.08.2018
IPC:
F02M 61/18 (2006.01) ,F02M 43/04 (2006.01) ,F02M 21/02 (2006.01) ,F02D 19/06 (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
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
18
Injection nozzles, e.g. having valve-seats
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
43
Fuel-injection apparatus operating simultaneously on two or more fuels or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
04
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
21
Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
02
for gaseous fuels
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
D
CONTROLLING COMBUSTION ENGINES
19
Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
06
peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
Applicants:
ROBERT BOSCH GMBH [DE/DE]; Postfach 30 02 20 70442 Stuttgart, DE
Inventors:
DICKMANN, Till; DE
KOENINGER, Andreas; DE
Priority Data:
10 2017 216 872.225.09.2017DE
Title (EN) NOZZLE ASSEMBLY FOR A FUEL INJECTOR, AND FUEL INJECTOR
(FR) ENSEMBLE BUSE POUR INJECTEUR DE CARBURANT, INJECTEUR DE CARBURANT
(DE) DÜSENBAUGRUPPE FÜR EINEN KRAFTSTOFFINJEKTOR, KRAFTSTOFFINJEKTOR
Abstract:
(EN) The invention relates to a nozzle assembly (1) for a fuel injector, by means of which a gaseous fuel can be injected into a combustion chamber (2) of a combustion engine, comprising a nozzle body (3) which surrounds a gas compartment (4) and, in the region of a nozzle cap (5), has multiple injection openings (6) arranged in at least one circle for connecting the gas compartment (4) with the combustion chamber (2). According to the invention, the injection openings (6) are arranged in multiple axially spaced-apart circles. Alternatively or additionally, it is provided that at least one portion of the injection openings (6) have an elongated cross-sectional shape, which has a greater dimension in the direction of a tip (7) of the nozzle cap (5) than in the circumferential direction of the nozzle cap (5) The invention also relates to a fuel injector having a nozzle assembly (1) of this type.
(FR) L’invention concerne un ensemble buse (1) pour un injecteur de carburant, au moyen duquel un carburant gazeux peut être injecté dans une chambre de combustion (2) d’un moteur à combustion interne. L’ensemble comporte un corps (3) de buse, qui entoure une chambre de gaz (4) et qui possède dans la zone d’un embout (5) de buse plusieurs orifices (6) d’injection qui sont agencés en formant au moins un cercle et qui sont destinés à relier la chambre de gaz (4) à la chambre de combustion (2). Selon l'invention, les orifices (6) d'injection sont ménagés en plusieurs cercles espacés axialement les uns des autres. En variante ou en complément, selon l'invention, au moins une partie des orifices d’injection (6) présente une forme de section transversale allongée, qui possède en direction d’une pointe (7) du dôme (5) de buse une dimension plus importante que dans la direction périphérique du dôme (5) de buse. L'invention concerne en outre un injecteur de carburant pourvu dudit ensemble buse (1).
(DE) Die Erfindung betrifft eine Düsenbaugruppe (1) für einen Kraftstoffinjektor, mittels dessen ein gasförmiger Kraftstoff in einen Brennraum (2) einer Brennkraftmaschine einblasbar ist, umfassend einen Düsenkörper (3), der einen Gasraum (4) umschließt und im Bereich einer Düsenkuppe (5) mehrere in mindestens einem Kreis angeordnete Einblasöffnungen (6) zur Verbindung des Gasraums (4) mit dem Brennraum (2) besitzt. Erfindungsgemäß sind die Einblasöffnungen (6) in mehreren axial zueinander beabstandeten Kreisen angeordnet. Alternativ oder ergänzend wird vorgeschlagen, dass zumindest ein Teil der Einblasöffnungen(6) eine längliche Querschnittsform aufweist, die in Richtung einer Spitze (7) der Düsenkuppe (5) eine größere Abmessung als in Umfangsrichtung der Düsenkuppe (5) besitzt. Die Erfindung betrifft ferner einen Kraftstoffinjektormit einer solchen Düsenbaugruppe (1)
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: German (DE)
Filing Language: German (DE)