The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 22, 1998
Filed:
Dec. 08, 1995
Masafumi Kunimitsu, Okazaki, JP;
Kiyoshi Mori, Okazaki, JP;
Tomokazu Muraguchi, Okazaki, JP;
Yoichiro Ando, Seto, JP;
Yasuo Kimura, Okazaki, JP;
Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Tokyo, JP;
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.