Injection strategy for low noise and soot combustion

The present invention, provides a strategy or method for injecting fuel in two distinct fuel injection events per engine cycle. The first injection event is main fuel injection, which occurs when the crankshaft is near top-dead center. The main injection event delivers a majority of the fuel needed...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	JEHLIK FORREST A, STOJKOVIC BORIS D, KRIEGER ROGER B, TAHRY SHERIF H.E
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL CONTROLLING COMBUSTION ENGINES GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INTERNAL-COMBUSTION PISTON ENGINES LIGHTING MECHANICAL ENGINEERING SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE WEAPONS
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Beschreibung
Zusammenfassung:	The present invention, provides a strategy or method for injecting fuel in two distinct fuel injection events per engine cycle. The first injection event is main fuel injection, which occurs when the crankshaft is near top-dead center. The main injection event delivers a majority of the fuel needed to provide a majority of the power produced during combustion. The second injection event is post injection, which occurs shortly after the main fuel injection event. The post injection event provides a supplemental amount of fuel to the combustion chamber to reduce the rate of pressure rise while increasing, turbulence, mixing and cylinder pressure within the combustion chamber to reduce the formation of soot. In addition, the combination of the main fuel injection event and the post fuel injection event reduces engine noise by reducing heat release rates and the rate of combustion chamber pressurization.