Control device for purge amount of

Abstract

Abstract PURPOSE:To keep holding satisfactory control accuracy in controlling the feed- back of air fuel ratio irrespective of stoppage period of an engine by providing a means for correctively reducing a purge valve controlling amount in a feed- back controlling region when a feed-back correction amount exceeds a controlling region. CONSTITUTION:When an engine is judged to be in a feed-back controlling region by a judging means 3, a fuel supply amount is controlled by an air fuel ratio feed-back controlling means 4 from a feed-back correction amount based upon the deflection of actual air fuel ratio of an actual air fuel ratio detecting means 2 form a desired air fuel ratio. Also, a purge valve 9 in a purge path 8 for introducing evaporated fuel adsorbed to a canister 5 by a urge valve controlling amount controlling means 10 into an intake path 7 is controlled according to the running condition. In such an apparatus is provided a judging means 11 for judging whether or not the feed-back correction amount exceeds a prede termined controlling region. When the judging result is YES, the purge valve controlling amount is correctively reduced by a reducing amount correction means 12.

Inventors

• 👤 Junichi Yajima
• 👤 矢島　淳一

Bibliographic Details