CYLINDER TO CYLINDER BALANCING USING FULLY FLEXIBLE VALVE ACTUATION AND CYLINDER PRESSURE FEEDBACK

A control system for an engine includes an valve actuator, a cylinder pressure module, and a valve control module. The valve actuator opens a valve of a cylinder at a first target opening timing during a first combustion cycle of the cylinder. The cylinder pressure module receives a cylinder pressur...

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Bibliographische Detailangaben
Hauptverfasser:	MOSCHEROSCH BEN W, COWGILL JOEL
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBUSTION ENGINES 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 LIGHTING MECHANICAL ENGINEERING 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:	A control system for an engine includes an valve actuator, a cylinder pressure module, and a valve control module. The valve actuator opens a valve of a cylinder at a first target opening timing during a first combustion cycle of the cylinder. The cylinder pressure module receives a cylinder pressure measured by a cylinder pressure sensor of the cylinder and, at a predetermined crankshaft angle after the valve opens during the first combustion cycle, sets a valve opening pressure equal to the cylinder pressure. The valve control module receives a reference cylinder pressure and generates a second target opening timing for a second combustion cycle of the cylinder based on the valve opening pressure and the reference cylinder pressure. The second combustion cycle is after the first combustion cycle. During the second combustion cycle, the valve actuator opens the valve at the second target opening timing.