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1. WO2009053651 - FLUID INJECTION DEVICE

Publication Number WO/2009/053651
Publication Date 30.04.2009
International Application No. PCT/FR2008/051871
International Filing Date 16.10.2008
IPC
F02M 61/18 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
61Fuel injectors not provided for in groups F02M39/-F02M57/94
16Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02-F02M61/14132
18Injection nozzles, e.g. having valve-seats
F02M 69/04 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
69Low-pressure fuel-injection apparatus
04Injectors peculiar thereto
F02M 51/06 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
51Fuel-injection apparatus characterised by being operated electrically
06Injectors peculiar thereto
CPC
F02M 51/0603
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
51Fuel-injection apparatus characterised by being operated electrically
06Injectors peculiar thereto ; with means directly operating the valve needle
0603using piezo-electric or magnetostrictive operating means
F02M 61/16
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
61Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
16Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
F02M 61/1806
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
61Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
16Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
18Injection nozzles, e.g. having valve seats; ; Details of valve member seated ends, not otherwise provided for
1806characterised by the arrangement of discharge orifices, e.g. orientation or size
F02M 61/1866
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
61Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
16Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
18Injection nozzles, e.g. having valve seats; ; Details of valve member seated ends, not otherwise provided for
1866Valve seats or member ends having multiple cones
F02M 69/041
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
69Low-pressure fuel-injection apparatus ; ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
04Injectors peculiar thereto
041having vibrating means for atomizing the fuel, e.g. with sonic or ultrasonic vibrations
Applicants
  • RENAULT S.A.S [FR]/[FR] (AllExceptUS)
  • AGNERAY, ANDRE [FR]/[FR] (UsOnly)
  • MALEK, NADIM [FR]/[FR] (UsOnly)
  • MASSON, PHILIPPE [FR]/[FR] (UsOnly)
  • LEVIN, LAURENT [FR]/[FR] (UsOnly)
Inventors
  • AGNERAY, ANDRE
  • MALEK, NADIM
  • MASSON, PHILIPPE
  • LEVIN, LAURENT
Agents
  • RENAULT S.A.S
Priority Data
075835316.10.2007FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) FLUID INJECTION DEVICE
(FR) DISPOSITIF D'INJECTION DE FLUIDE
Abstract
(EN)
The invention relates to a fluid injector having a main lengthwise axis and comprising at least the following: a nozzle extending longitudinally along said axis and having a seat and at least one injection orifice for the exit of the fluid from the nozzle, the injection orifice communicating with a fluid supply duct; a needle that is movable axially inside the nozzle and has, along said axis, a first or free end defining a valve with the seat of the nozzle, in an area of contact between these. According to the invention, the nozzle extends, axially towards its free end, past the first end of the needle, where it comprises, perpendicular to this axis, a check wall where said seat is defined.
(FR)
L'invention concerne un injecteur de fluide présentant un axe principal d'allongement et comportant au moins : une buse s'étendant longitudinalement, suivant ledit axe, et présentant un siège et au moins un orifice d'injection pour la sortie du fluide hors de la buse, l'orifice d'injection communiquant avec un conduit d'amenée de ce fluide, une aiguille montée mobile axialement dans la buse et présentant, suivant ledit axe, une première extrémité, libre, définissant un clapet avec le siège de la buse, dans une zone de contact entre eux. Selon l'invention, la buse s'étend, axialement en direction de son extrémité libre, jusqu'au-delà de la première extrémité de l'aiguille, où elle présente, transversalement à cet axe, une paroi butoir où est défini ledit siège.
Also published as
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