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专利名称：Evaporated fuel treatment device of an
engine
发明人：Osinai, Akinori申请号：EP97113779.9申请日：19970808公开号：EP08241B1公开日：20021120
摘要：An evaporated fuel treatment device comprising a purge control valve forcontrolling an amount of fuel vapor fed into the intake passage from a charcoal canister.The drive pulse of the purge control valve is controlled by a duty ratio. When the engineis idling, if the air-fuel ratio becomes rich, the speed of increase of the duty ratio of thedrive pulse of the purge control valve is restricted to less than a predetermined speed.
申请人：TOYOTA MOTOR CO LTD
地址：JP
国籍：JP
代理机构：Leson, Thomas Johannes Alois, Dipl.-Ing.
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