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1. (WO2017167627) FUEL INJECTOR
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Pub. No.: WO/2017/167627 International Application No.: PCT/EP2017/056890
Publication Date: 05.10.2017 International Filing Date: 22.03.2017
IPC:
F02M 47/02 (2006.01) ,F02M 65/00 (2006.01) ,F02M 51/00 (2006.01) ,F02M 61/12 (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
47
Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
02
of 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
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
65
Testing fuel-injection apparatus, e.g. testing injection timing
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
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
Applicants: DELPHI TECHNOLOGIES IP LIMITED[BB/BB]; Erin Court, Bishop's Court Hill St. Michael, BB
Inventors: THIBAULT, Thierry; FR
MOREAU, Christophe; FR
Agent: DELPHI FRANCE SAS; c/o Delphi Technologies Campus Saint Christophe, Bâtiment Galilée 2 10, avenue de l'Entreprise 95863 Cergy Pontoise CEDEX, FR
Priority Data:
165287201.04.2016FR
165308307.04.2016FR
Title (EN) FUEL INJECTOR
(FR) INJECTEUR DE CARBURANT
Abstract:
(EN) The invention relates to a fuel injector for an internal combustion engine, which comprises an injection nozzle (12) with a body (16) inside which a needle (14) is arranged movable between a closed position (PF), in which a first end (48) of the needle (14) rests on a seat (32) and seals injection openings (34) of the nozzle, and an open position (PO), in which the first end (48) of the needle (14) is lifted from the seat (32) thereof in order to allow the injection; a control chamber (46) and a control valve (20); and an upper guide (18) guiding the needle (14) axially by the second end (42) thereof. Means for detecting the position of the needle (14) comprise a first electric link in contact with the second end (42) of the needle (14) so as to bring same to a predetermined electric potential. The needle (14) is mounted in the nozzle body (16) so as to be able to move therein while being electrically isolated from the nozzle body (16), except for the region of the nozzle body seat (32), so that the needle (14) is in electric contact with the nozzle body (16) only in closed position.
(FR) Un injecteur de carburant pour un moteur à combustion interne comprend une buse d'injection (12) avec un corps (16) dans lequel est agencée une aiguille (14) déplaçable entre une position fermée (PF), dans laquelle une première extrémité (48) de l'aiguille (14) repose sur un siège (32) et obture des orifices d'injection (34) de la buse, et une position ouverte (PO), dans laquelle la première extrémité (48) de l'aiguille (14) est levée de son siège (32) pour permettre l'injection; une chambre de commande (46) et une vanne de commande (20); un guide haut (18) assurant le guidage axial de l'aiguille (14) par sa deuxième extrémité (42). Des moyens de détection de position de l'aiguille (14) comprennent une première liaison électrique en contact avec la deuxième extrémité (42) de l'aiguille (14) de sorte à la porter à un potentiel électrique prédéterminé. L'aiguille (14) est montée dans le corps de buse (16) de sorte à pouvoir se déplacer dans celui-ci tout en étant isolée électriquement du corps de buse (16), à l'exception de la région du siège de corps de buse (32), de sorte que l'aiguille (14) soit en contact électrique avec le corps de buse (16) uniquement en position fermée.
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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, 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: French (FR)
Filing Language: French (FR)