Processing

Please wait...

Settings

Settings

Goto Application

1. WO2014107487 - DIRECT FUEL INJECTORS WITH VARIABLE INJECTON FLOW RATE

Publication Number WO/2014/107487
Publication Date 10.07.2014
International Application No. PCT/US2014/010033
International Filing Date 02.01.2014
IPC
F02M 61/10 2006.1
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
04having valves
10Other injectors with elongated valve bodies, i.e. of needle-valve type
CPC
F02M 2547/001
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
001Control chambers formed by movable sleeves
F02M 2547/008
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
008Means for influencing the flow rate out of or into a control chamber, e.g. depending on the position of the needle
F02M 45/12
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
45Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
12providing a continuous ; cyclic; delivery with variable pressure
F02M 47/025
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
025Hydraulically actuated valves draining the chamber to release the closing pressure
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 61/10
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
04having valves ; , e.g. having a plurality of valves in series
10Other injectors with elongated valve bodies, i.e. of needle-valve type
Applicants
  • REGENTS OF THE UNIVERSITY OF MINNESOTA [US]/[US]
Inventors
  • SUN, Zongxuan
  • WU, Chienshin
Agents
  • BINDER, Mark, W.
Priority Data
61/748,22902.01.2013US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) DIRECT FUEL INJECTORS WITH VARIABLE INJECTON FLOW RATE
(FR) INJECTEURS DE CARBURANT DIRECT À DÉBIT D'INJECTION VARIABLE
Abstract
(EN) An injector is designed to provide continuously variable injection rate shaping. With a hydro-mechanical internal feedback mechanism, injector needle position can be determined by controlling a feedback valve's on/off timing. According to the needle position, an injection needle valve opening can be controlled, and then the injection flow rate can be delivered proportionally. Also in accordance with the present invention a CRDI systems are provided including injectors of the present invention, wherein results demonstrate that injector designs of the present invention not only achieve rate shaping capability but also solve the above-noted problems of the current CRDI system. Finally, an iterative learning controller has also been developed to track the desired injection rate, and an injection rate estimator is designed to realize a cycle to cycle feedback control.
(FR) La présente invention concerne un injecteur conçu pour fournir une formation de débit d'injection à variation continue. Avec un mécanisme de réaction interne hydromécanique, la position de l'aiguille d'injecteur peut être déterminée en réglant la synchronisation de marche/arrêt de la soupape de réaction. Selon la position de l'aiguille, une ouverture de soupape à aiguille d'injection peut être réglée, et le débit d'injection peut être fourni de manière proportionnelle. De même, selon la présente invention, des systèmes CRDI sont prévus, comprenant des injecteurs de la présente invention, des résultats démontrant que les conceptions des injecteurs de la présente invention présentent non seulement une capacité de formation de débit mais résolvent les problèmes susmentionnés du système CRDI actuel. Enfin, un contrôleur d'apprentissage itératif a également été développé pour suivre le débit d'injection souhaité, et un estimateur de débit d'injection est conçu pour réaliser une commande de réaction de cycle à cycle.
Related patent documents
Latest bibliographic data on file with the International Bureau