VAPOR FUEL CONTROLLER OF INTERNAL COMBUSTION ENGINE

PURPOSE:To accurately measure fuel vapor concentration and/or a volumetric flow quantity of vapor air-mixture which includes real fuel vapor vaporized from a fuel tank and supplied to an engine intake system, and also accurately control an air-fuel ratio base on the measured result. CONSTITUTION:A p...

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Bibliographische Detailangaben
Hauptverfasser:	FUJIMOTO YUKITO, WAKASHIRO TERUO, MORIWAKI HIDEO, HOSODA FUMIO, UCHIYAMA SHINJI, ABE RYOJI, YAMAZAKI KAZUMI, OKETANI RIICHI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To accurately measure fuel vapor concentration and/or a volumetric flow quantity of vapor air-mixture which includes real fuel vapor vaporized from a fuel tank and supplied to an engine intake system, and also accurately control an air-fuel ratio base on the measured result. CONSTITUTION:A purge control valve 16 and a heat coil type flow meter 22 are provided on the way of a purge pipe 17 which connects a canister 156 to a throttle body 3. A flow quantity of mixture gas of air fuel vapor passes through the purge pipe 17 is calculated based on detected values of a throttle valve opening sensor 4 and an inter-intake pipe absolute pressure sensor 10. Concentration and/or a volumtric fluid quantity of the fuel vapor are calculated based on the flow quantity and the output value of the heat coil type flow meter 22.