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1. WO1996003578 - COMMON-RAIL FUEL INJECTION METHOD FOR DIESEL ENGINES

Publication Number WO/1996/003578
Publication Date 08.02.1996
International Application No. PCT/IT1995/000122
International Filing Date 21.07.1995
Chapter 2 Demand Filed 20.02.1996
IPC
F02B 3/06 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
3Engines characterised by air compression and subsequent fuel addition
06with compression ignition
F02B 47/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
47Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines
F02D 41/38 2006.01
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
38of the high pressure type
F02D 41/40 2006.01
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
38of the high pressure type
40with means for controlling injection timing or duration
F02M 45/02 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
45Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
02with each cyclic delivery being separated into two or more parts
CPC
F02B 3/06
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
3Engines characterised by air compression and subsequent fuel addition
06with compression ignition
F02B 47/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
47Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines
F02D 2200/0602
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
2200Input parameters for engine control
02the parameters being related to the engine
06Fuel or fuel supply system parameters
0602Fuel pressure
F02D 41/3863
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
38of the high pressure type
3809Common rail control systems
3836Controlling the fuel pressure
3863by controlling the flow out of the common rail, e.g. using pressure relief valves
F02D 41/402
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
38of the high pressure type
40with means for controlling injection timing or duration
402Multiple injections
F02D 41/403
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
38of the high pressure type
40with means for controlling injection timing or duration
402Multiple injections
403with pilot injections
Applicants
  • C.R.F. SOCIETA' CONSORTILE PER AZIONI [IT/IT]; Strada Torino, 50 I-10043 Orbassano, IT (AllExceptUS)
  • BURATTI, Riccardo [IT/IT]; IT (UsOnly)
  • CANALE, Silvio [IT/IT]; IT (UsOnly)
Inventors
  • BURATTI, Riccardo; IT
  • CANALE, Silvio; IT
Agents
  • JORIO, Paolo ; Studio Torta Via Viotti, 9 I-10121 Torino, IT
Priority Data
TO94A00060822.07.1994IT
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) COMMON-RAIL FUEL INJECTION METHOD FOR DIESEL ENGINES
(FR) PROCEDE D'INJECTION DE CARBURANT PAR RAIL COMMUN POUR MOTEURS DIESEL
Abstract
(EN)
An injection method presenting, in addition to the main injection phase, an auxiliary pre-injection phase during the induction stroke of the engine. The pre-injection phase is preferably performed at the start of the induction stroke, and provides for injecting a small quantity of fuel equal to a few percent of the fuel quantity injected during the main injection phase, so that, during the compression stroke, partially oxidized and/or peroxidized products with a strong chemical affinity are formed, and which act as combustion accelerators for minimizing fuel ignition lag of the main injection phase and so reducing the nitric oxides and noise produced during combustion.
(FR)
Procédé d'injection comprenant, en plus de la phase d'injection principale, une phase de préinjection auxiliaire pendant la course d'admission du moteur. La phase de préinjection s'effectue de préférence au début de la course d'admission, et consiste en l'injection d'une petite quantité de carburant égale à un faible pourcentage de la quantité de carburant injectée au cours de la phase d'injection principale, de manière à former, pendant la course de compression, des produits partiellement oxydés et/ou peroxygénés à forte affinité chimique servant d'accélérateurs de combustion permettant de réduire au minimum le délai d'allumage du carburant dans la phase d'injection principale, et de réduire ainsi la production d'oxydes nitriques et le bruit pendant la combustion.
Also published as
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