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1. WO2018059818 - FUEL INJECTION SYSTEM

Publication Number WO/2018/059818
Publication Date 05.04.2018
International Application No. PCT/EP2017/070651
International Filing Date 15.08.2017
IPC
F02M 21/02 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
21Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
02for gaseous fuels
F02D 41/30 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
30Controlling fuel injection
F02D 19/06 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
19Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
06peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
F02D 41/00 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
F02D 19/02 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
19Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
02peculiar to engines working with gaseous fuels
CPC
F02D 19/024
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
19Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
02peculiar to engines working with gaseous fuels
021Control of components of the fuel supply system
023to adjust the fuel mass or volume flow
024by controlling fuel injectors
F02D 19/0692
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
19Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
06peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
0663Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
0686Injectors
0692Arrangement of multiple injectors per combustion chamber
F02D 41/0027
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
0025Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
0027the fuel being gaseous
F02D 41/3094
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
30Controlling fuel injection
3094the fuel injection being effected by at least two different injectors, e.g. one in the intake manifold and one in the cylinder
F02D 41/365
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
30Controlling fuel injection
32of the low pressure type
36with means for controlling distribution
365with means for controlling timing and distribution
F02M 21/0278
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
21Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
02for gaseous fuels
0218Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
0248Injectors
0278Port fuel injectors for single or multipoint injection into the air intake system
Applicants
  • ROBERT BOSCH GMBH [DE]/[DE]
Inventors
  • WALTER, Michael
  • NAFE, Joerg
  • FALKENAU, Tobias
Priority Data
10 2016 218 912.329.09.2016DE
Publication Language German (de)
Filing Language German (DE)
Designated States
Title
(DE) KRAFTSTOFFEINSPRITZSYSTEM
(EN) FUEL INJECTION SYSTEM
(FR) SYSTÈME D'INJECTION DE CARBURANT
Abstract
(DE) System (1) für die Einspritzung von Kraftstoff (49) in einen Motor (2) mit einer Mehrzahl von Zylindern (31-36), umfassend ein Saugrohr (4) zur Versorgung der Zylinder mit Verbrennungsluft (48), wobei das Saugrohr (4) je Zylinder (31-36) mindestens einen zu diesem Zylinder (31-36) führenden Abzweig (41-46) aufweist und wobei jedem Abzweig (41-46) mindestens ein Injektor (51-56) zur individuellen Dosierung von Kraftstoff (49) in diesen Abzweig zugeordnet ist, wobeistromaufwärts eines Punktes (47), an dem das Saugrohr (4) in mindestens zwei Abzweige (41-46) verzweigt, mindestens ein zusätzlicher Schaltinjektor (6) zur Eindosierung zusätzlichen Kraftstoffs (49) angeordnet ist. System (1) für die Einspritzung von Kraftstoff in einen Motor (2), wobei eine Mehrzahl von Injektoren (51-56) vorgesehen ist, die den Kraftstoff in einen Sammler (7) eindosieren und wobei der Sammler (7) stromaufwärts eines Punktes (47), an dem das Saugrohr (4) in mindestens zwei Abzweige (41-46) verzweigt, in das Saugrohr (4) mündet,wobeimindestens ein zusätzlicher Schaltinjektor (6) zur Eindosierung zusätzlichen Kraftstoffs (49) in den Sammler (7) vorgesehen ist, wobei der Schaltinjektor (6) eine minimale Öffnungszeit von 5 ms oder mehr aufweist. Verfahren zum Betreiben eines Systems (1) und Computerprogrammprodukt.
(EN) The invention relates to a system (1) for injecting fuel (49) into a motor (2) with a plurality of cylinders (31-36), comprising an intake pipe (4) for supplying the cylinders with combustion air (48). For each cylinder (31-36), the intake pipe (4) has at least one branch (41-46) leading to said cylinder (31-36), and each branch (41-46) is paired with at least one injector (51-56) for individually metering fuel (49) into said branch. At least one additional switch injector (6) for metering additional fuel (49) is arranged upstream of the point (47) where the intake pipe (4) branches into at least two branches (41-46). A plurality of injectors (51-56) are provided which meter fuel into a collector (7), and the collector (7) opens into the intake pipe (4) upstream of the point (47) where the intake pipe (4) branches into at least two branches (41-46). The at least one additional switch injector (6) is provided for metering additional fuel (49) into the collector (7), and the switch injector (6) has a minimal opening time of 5 ms or more. The invention also relates to a method for operating a system (1) and to a computer program product.
(FR) L'invention concerne un système (1) d'injection de carburant (49) dans un moteur (2) comprenant une pluralité de cylindres (31-36), comportant une tubulure d'admission (4) servant à l'alimentation des cylindres en air de combustion (48), la tubulure d'admission (4) comprenant, pour chaque cylindre (31-36), au moins une dérivation (41-46) menant jusqu'à ce cylindre (31-36), et au moins un injecteur (51-56) étant associé à chaque dérivation (41-46), l'injecteur servant au dosage individuel de carburant (49) dans cette dérivation, au moins un injecteur de commutation (6) supplémentaire servant au dosage d'un carburant supplémentaire (49) étant disposé en amont d'un point (47) auquel la tubulure d'admission (4) bifurque en au moins deux dérivations (41-46). L'invention concerne en outre un système (1) d'injection de carburant dans un moteur (2), une pluralité d'injecteurs (51-56) étant prévus, lesquels dosent le carburant dans un collecteur (7), et le collecteur (7) débouchant dans la tubulure d'admission (4) en amont d'un point (47) auquel la tubulure d'admission (4) bifurque en au moins deux dérivations (41-46), au moins un injecteur de commutation (6) supplémentaire servant au dosage d'un carburant supplémentaire (49) étant disposé dans le collecteur (7), l'injecteur de commutation (6) présentant un temps d'ouverture minimal de l'ordre de 5 ms ou plus. L'invention concerne par ailleurs un procédé permettant de faire fonctionner un système (1) et un produit-programme informatique.
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