METHOD TO DETERMINE THE INJECTION PATTERN IN THE COMPRESSION STROKE OF THE COMBUSTION CYCLE OF THE CYLINDERS OF A DIRECT-INJECTION INTERNAL COMBUSTION ENGINE

METHOD TO DETERMINE THE INJECTION PATTERN IN THE COMPRESSION STROKE OF THE COMBUSTION CYCLE OF THE CYLINDERS OF A DIRECT-INJECTION INTERNAL COMBUSTION ENGINE

A method to determine the injection pattern in the compression stroke (COMP) of the combustion cycle of the cylinders (2) of a direct-injection internal combustion engine (1), comprising the steps of determining the initial quantity (QFinit_comp ) of fuel and an objective quantity (QFobj_comp ) of f...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: PANINI, FABIO, SENSI, FABIO, MUSI, ALESSANDRO, LANZONI, RICCARDO, CAVANNA, FILIPPO, MORELLI, MARCO
Format: Patent
Sprache:eng
Schlagworte:
BLASTING
COMBUSTION ENGINES
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MECHANICAL ENGINEERING
SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF
WEAPONS
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Beschreibung
Zusammenfassung:A method to determine the injection pattern in the compression stroke (COMP) of the combustion cycle of the cylinders (2) of a direct-injection internal combustion engine (1), comprising the steps of determining the initial quantity (QFinit_comp ) of fuel and an objective quantity (QFobj_comp ) of fuel to be injected for each partial injection of a maximum number (Nmax_comp ) of partial injections; determining an effective quantity (QFeff_comp ) of fuel to be injected for each partial injection as a function of the respective initial quantity (QFinit_comp ) of fuel and of the respective objective quantity (QFobj_comp ) of fuel; and determining an objective pattern of partial injections to be performed in the compression stroke (COMP) as a function of the value of the end of injection angle (EOI) and of the effective quantity (QFeff_comp ) of fuel to be injected for each partial injection of said maximum number (Nmax_comp ) of partial injections to be performed in the compression stroke (COMP).