CONTROL SYSTEM OF MILLER CYCLE ENGINE AND METHOD OF CONTROLLING MILLER CYCLE ENGINE

A control system of a Miller cycle engine (10) includes an ECU (50). The ECU executes an early closing Miller cycle operating mode in which a variable valve mechanism (38) is controlled to close an intake valve (36) before an intake bottom dead center (BDC). The ECU executes a decompression mode in...

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Bibliographische Detailangaben
Hauptverfasser:	UMEHARA, Kohei, HOJO, Akira, TAKAMIYA, Fumio, SADAKANE, Shinji, HOTTA, Shintaro
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES ENGINE PLANTS IN GENERAL HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	A control system of a Miller cycle engine (10) includes an ECU (50). The ECU executes an early closing Miller cycle operating mode in which a variable valve mechanism (38) is controlled to close an intake valve (36) before an intake bottom dead center (BDC). The ECU executes a decompression mode in which the variable valve mechanism is controlled to close the intake valve at a point later than the intake BDC, when the engine is started. The ECU executes the early closing Miller cycle operating mode after completion of the decompression mode. A later closing amount of the intake valve relative to the intake BDC, for use in the decompression mode, is larger than an early closing amount of the intake valve relative to the intake BDC when the closing timing of the intake valve is most advanced.