Engine control device and engine control method

A first target engine speed N1 and a high-speed control area F1 are set according to a command value commanded by a command unit. A second target engine speed N2 and a high-speed control area F2 defined on a low-speed side are set according to the first target engine speed N1. A pump displacement D...

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Bibliographische Detailangaben
Hauptverfasser:	AKIYAMA TERUO, OOI TAKESHI, ASADA HISASHI
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGUE COMPUTERS BLASTING CALCULATING COMBUSTION ENGINES COMPUTING CONTROLLING COMBUSTION ENGINES COUNTING DREDGING ELECTRIC DIGITAL DATA PROCESSING FIXED CONSTRUCTIONS FOUNDATIONS 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 HYDRAULIC ENGINEERING LIGHTING MECHANICAL ENGINEERING PHYSICS SOIL SHIFTING TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS WEAPONS
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Beschreibung
Zusammenfassung:	A first target engine speed N1 and a high-speed control area F1 are set according to a command value commanded by a command unit. A second target engine speed N2 and a high-speed control area F2 defined on a low-speed side are set according to the first target engine speed N1. A pump displacement D and an engine torque T of a variable displacement hydraulic pump are detected so that a target engine speed N corresponding to each of the detected pump displacement and engine torque is detected according to a preset relationship between a the pump displacement D and the target engine speed N and a preset relationship between the engine torque T and the target engine speed N during an engine control at the high-speed control area F2. The drive of the engine is controlled so that the engine is driven at the target engine speed N.