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1. WO1996003577 - DYNAMIC ELECTRONIC CONTROL SYSTEM FOR CONTROLLING THE INJECTION PRESSURE OF A RAIL INJECTION SYSTEM

Publication Number WO/1996/003577
Publication Date 08.02.1996
International Application No. PCT/IT1995/000121
International Filing Date 21.07.1995
Chapter 2 Demand Filed 20.02.1996
IPC
F02D 41/14 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
02Circuit arrangements for generating control signals
14Introducing closed-loop corrections
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
CPC
F02D 2041/1415
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
02Circuit arrangements for generating control signals
14Introducing closed-loop corrections
1401characterised by the control or regulation method
1413Controller structures or design
1415using a state feedback or a state space representation
F02D 2041/1426
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
02Circuit arrangements for generating control signals
14Introducing closed-loop corrections
1401characterised by the control or regulation method
1413Controller structures or design
1426taking into account control stability
F02D 2041/1433
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
02Circuit arrangements for generating control signals
14Introducing closed-loop corrections
1401characterised by the control or regulation method
1433using a model or simulation of the system
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 2250/31
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
2250Engine control related to specific problems or objectives
31Control of the fuel pressure
F02D 41/1401
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
02Circuit arrangements for generating control signals
14Introducing closed-loop corrections
1401characterised by the control or regulation method
Applicants
  • C.R.F. SOCIETA' CONSORTILE PER AZIONI [IT/IT]; Strada Torino, 50 I-10043 Orbassano, IT (AllExceptUS)
  • ANTONIOLI, Pierpaolo [IT/IT]; IT (UsOnly)
  • PISONI, Alberto [IT/IT]; IT (UsOnly)
Inventors
  • ANTONIOLI, Pierpaolo; IT
  • PISONI, Alberto; IT
Agents
  • JORIO, Paolo ; Studio Torta Via Viotti, 9 I-10121 Torino, IT
Priority Data
TO94A00060922.07.1994IT
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DYNAMIC ELECTRONIC CONTROL SYSTEM FOR CONTROLLING THE INJECTION PRESSURE OF A RAIL INJECTION SYSTEM
(FR) SYSTEME DE COMMANDE ELECTRONIQUE DYNAMIQUE SERVANT A REGULER LA PRESSION D'INJECTION D'UN SYSTEME D'INJECTION A RAIL
Abstract
(EN)
An electronic system (1) for controlling the injection pressure of a fuel injection system (4) wherein a pump (8) supplies fuel at high pressure to a rail (17) presenting a number of outlets (19a, 19b, 19c, 19d) communicating with respective injectors (21a, 21b, 21c, 21d). The injection system (4) presents a pressure regulator (24) interposed between the outlet (8a) of the pump (8) and the inlet (17a) of the rail (17), and controlled by a drive signal (U(z)) generated by a regulator circuit (50); the regulator circuit (50) is supplied with a digital error signal (Err(z)) representing the difference between a signal (Pmis(z)) generated by a pressure sensor (38) in the rail, and a signal (Prif(z)) representing an optimum reference pressure; and the regulator circuit (50) presents a transfer function R(z) of type (1), where 'a', Kc are calculated numeric coefficients, and z is a digital variable.
(FR)
Système électronique (1) servant à réguler la pression d'injection d'un système d'injection de carburant (4), dans lequel une pompe (8) alimente un rail (17) en carburant sous haute pression, ce rail étant doté de plusieurs orifices de sortie (19a, 19b, 19c, 19d) mis en communication avec des injecteurs respectifs (21a, 21b, 21c, 21d). Le système d'injection (4) comporte un régulateur de pression (24) interposé entre l'orifice de sortie (8a) de la pompe (8) et l'orifice d'entrée (17a) du rail (17), et commandé par un signal d'attaque (U(z)) émis par un circuit régulateur (50). Le circuit régulateur (50) reçoit un signal d'erreur numérique (Err(z)) représentant la différence entre un signal (Pmis(z)) émis par un capteur de pression (38) prévu dans le rail, et un signal (Prif(z)) représentant une pression de référence optimale. En outre, le circuit régulateur (50) présente une fonction de transfert R(z) du type (1), où 'a' et Kc représentent des coefficients numériques calculés, et z représente une variable numérique.
Also published as
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