DIRECT-INJECTION ENGINE WITH SUPERCHARGER

DIRECT-INJECTION ENGINE WITH SUPERCHARGER

PROBLEM TO BE SOLVED: To effectively further reduce the discharged amount of NOx while improving a fuel efficiency. SOLUTION: In this engine comprising superchargers (25, 30) for pressurizing suction air and an injector 10 for injecting a fuel directly into a combustion chamber 5, the excess coeffic...

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Bibliographische Detailangaben
Hauptverfasser: NISHIMOTO TOSHIRO, HITOMI MITSUO, YAMAKAWA MASANAO, ARAKI KEIJI, YOUSO TAKASHI
Format: Patent
Sprache:eng
Schlagworte:
BLASTING
COMBUSTION ENGINES
COMBUSTION ENGINES IN GENERAL
CONTROLLING COMBUSTION ENGINES
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
INTERNAL-COMBUSTION PISTON ENGINES
LIGHTING
MECHANICAL ENGINEERING
WEAPONS
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To effectively further reduce the discharged amount of NOx while improving a fuel efficiency. SOLUTION: In this engine comprising superchargers (25, 30) for pressurizing suction air and an injector 10 for injecting a fuel directly into a combustion chamber 5, the excess coefficient λ against a theoretical air-fuel ratio at least when the engine is warm is set to two or more in all areas of engine load, combustion by a compressed self-ignition is performed in the low load area of the engine, and the excess coefficient λ is maintained at two or more since the supercharged amount by the superchargers (25, 30) is increased according to an increase in load in the high load area of the engine. COPYRIGHT: (C)2011,JPO&INPIT