Engine fuel control device and idling air-fuel ratio control method

An engine fuel control device includes an idle speed control valve that controls an engine speed during idling by bypassing a throttle valve, an air bleed valve that is disposed downstream from a regulator for regulating the pressure of a fuel gas supplied to the engine and that controls a flow path...

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Bibliographische Detailangaben
Hauptverfasser:	ASANO SEIJI, IGARASHI BUNJI
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:	An engine fuel control device includes an idle speed control valve that controls an engine speed during idling by bypassing a throttle valve, an air bleed valve that is disposed downstream from a regulator for regulating the pressure of a fuel gas supplied to the engine and that controls a flow path area of a passage open to atmosphere, a target speed setting means that sets a target engine speed during idling, a throttle valve opening control means that controls the opening of the idle speed control valve so as to maintain the target engine speed, a control factor setting means that sets a factor so as to control the opening of the idle speed control valve, a capturing means that captures a change in a state of the factor, and a control means that controls the air bleed valve based on the change in the state of the factor captured by the capturing means. It controls the air bleed valve.