AIR-FUEL RATIO CONTROLLING APPARATUS FOR ELECTRONICALLY CONTROLLED ENGINE

PURPOSE:To improve the exhaust-gas purifying performance and the specific fuel consumption of an engine at the time of its idling operation, by providing an open-loop control means for controlling the fir-fuel ratio at the time of idling operation of the engine by way of open-loop control. CONSTITUT...

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Bibliographische Detailangaben
1. Verfasser:	OOSAWA KOUICHI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBUSTION ENGINES CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING CONTROLLING COMBUSTION ENGINES FUNCTIONAL ELEMENTS OF SUCH SYSTEMS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PHYSICS REGULATING WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To improve the exhaust-gas purifying performance and the specific fuel consumption of an engine at the time of its idling operation, by providing an open-loop control means for controlling the fir-fuel ratio at the time of idling operation of the engine by way of open-loop control. CONSTITUTION:A control-mode selecting switch 1 selects either of feedback control or open-loop control for controlling the air-fuel ratio at the time of idling operation of an engine. A memory means 2 for the feedback control at the time of idling operation stores therein a feedback correction factor. Further, an open- loop control means 3 controls the air-fuel ratio by use of the feedback correction factor. With such an arrangement, it is enabled to improve the exhaust-gas purifying performance and the specific fuel consumption of the engine at the time of its idling operation.