ENGINE

PROBLEM TO BE SOLVED: To provide an engine capable of preventing accumulation of carbon on an EGR cooler even when an operation is continued at a low speed with low load.SOLUTION: A control device is constituted so as to fully close an opening when a cut condition is satisfied, and to variably contr...

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Bibliographische Detailangaben
Hauptverfasser:	NAKANO SATOSHI, YUKI TATSU
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 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:	PROBLEM TO BE SOLVED: To provide an engine capable of preventing accumulation of carbon on an EGR cooler even when an operation is continued at a low speed with low load.SOLUTION: A control device is constituted so as to fully close an opening when a cut condition is satisfied, and to variably control the opening when a cut release condition is satisfied. An operation region is defined as a region surrounded by a characteristic curve indicating a relation between a rotating speed and torque. The operation region R0 is composed of a high operation region R1 including an NTE region R11, and a low operation region R2 determined at a low torque side and a low rotating speed side with respect to the high operation region R1. The cut condition is that an operation condition specified by the rotating speed and the torque is kept within the low operation region R2 for a prescribed time or more. The cut release condition is that the operation condition enters the high operation region R1.