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1. WO2002020956 - METHOD AND APPARATUS FOR PRE-PILOT FUEL INJECTION IN DIESEL INTERNAL COMBUSTION ENGINES

Publication Number WO/2002/020956
Publication Date 14.03.2002
International Application No. PCT/US2001/023936
International Filing Date 30.07.2001
Chapter 2 Demand Filed 21.03.2002
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 3/10 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
10with intermittent fuel introduction
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
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 3/10
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
10with intermittent fuel introduction
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
Y02T 10/40
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
10Road transport of goods or passengers
10Internal combustion engine [ICE] based vehicles
40Engine management systems
Applicants
  • INTERNATIONAL ENGINE INTELLECTUAL PROPERTY COMPANY, LLC [US]/[US]
Inventors
  • ZUKOUSKI, Russell, P.
  • GUI, Xinqun
Agents
  • SULLIVAN, Dennis, Kelly
Priority Data
09/653,46901.09.2000US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR PRE-PILOT FUEL INJECTION IN DIESEL INTERNAL COMBUSTION ENGINES
(FR) PROCEDE ET DISPOSITIF POUR INJECTION DE CARBURANT PRE-PILOTE DANS UN MOTEUR A COMBUSTION INTERNE DE TYPE DIESEL
Abstract
(EN)
A method and apparatus for injecting fuel into a diesel engine combustion chamber is provided wherein a pre-pilot injection (225) is injected sufficiently prior to critical mass conditions being achievable to permit vaporization and formation of a substantially homogenous mixture before a critical mass exist. Preferably, a pilot injection (215) is injected after the pre-pilot injection (225) but at or before a point wherein a critical mass based on the pre-pilot (225) quantity is attained. This will result in a reduced heat release rate which in turn will result in a slower, smoother and more controlled build-up of pressure in the combustion chamber and thereby advantageously reduce combustion noise.
(FR)
L'invention concerne un procédé et un dispositif pour l'injection de carburant dans une chambre de combustion de moteur diesel. Une injection pré-pilote (225) intervient suffisamment longtemps avant l'établissement des conditions de masse critique pour permettre la vaporisation et la formation d'un mélange sensiblement homogène avant l'apparition des conditions de masse critique en question. De préférence, l'injection pilote (215) intervient après l'injection pré-pilote (225) mais à un stade ou avant un stade auquel une masse critique est établie sur la base de la quantité de pré-pilote (225). On réduit ainsi le taux de libération de chaleur, ce qui donne une montée de pression plus lente, plus douce et mieux contrôlée dans la chambre de combustion, permettant donc de réduire avantageusement le bruit de combustion.
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