Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system
Patent
1995-12-08
1998-12-22
Miller, Carl S.
Internal-combustion engines
Charge forming device
Having fuel vapor recovery and storage system
123516, F02M 3704
Patent
active
058508198
ABSTRACT:
A fuel evaporative emission treatment system includes a canister which has an evaporative fuel introduction part arranged for communication with a fuel tank, an evaporative fuel emission part arranged for communication with an intake system of an engine, and a vent part arranged for communication with the atmosphere, and which absorbs the evaporative fuel. The fuel evaporative emission treatment system includes a vent pipe having a first passage communicating to the vent part of the canister and to the atmosphere, a first solenoid valve for opening and closing the first passage, an air filter for cleaning atmospheric air flowing thereinto, the filter being provided on the first passage on the side remote from the canister with respect to the first solenoid valve, and a one-way valve or lead valve which defines a second passage communicating to the vent part of the canister. The valve is opened at fueling. The evaporative fuel generated in the fuel tank upon fueling contains a fuel component which is eliminated by the canister and emitted into the atmosphere through the second passage. As a result, the fueling performance will not deteriorate even if the air filter is provided.
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Ando Yoichiro
Kimura Yasuo
Kunimitsu Masafumi
Mori Kiyoshi
Muraguchi Tomokazu
Miller Carl S.
Mitsubishi Jidosha Kogyo Kabushiki Kaisha
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