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.

Date of Patent:
Mar. 17, 1998

Filed:

Aug. 05, 1996
Applicant:
Inventors:

Takeshi Honda, Wako, JP;

Hideki Matsumoto, Wako, JP;

Naritoshi Muramatsu, Wako, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
123520 ; 1231 / ; 123519 ;
Abstract

An evaporative fuel-processing system for an internal combustion engine for use in a vehicle. A passage extends between the fuel tank and the intake passage of the engine, for guiding evaporative fuel generated in the fuel tank, for processing, and across which a canister having an air communication port is arranged. A drain passage is connected to the air communication port, to which a valve casing is connected. A first passage is connected to the valve casing, and a first valve is associated with the first passage and the valve casing, for allowing air to flow into the canister through the first passage, the valve casing and the air communication port and for inhibiting evaporative fuel from being discharged from the canister through the air communication port, the valve casing and the first passage. A second passage is connected to the valve casing, and a second valve is associated with the second passage and the valve casing, for inhibiting air from flowing into the canister through the second passage, the valve casing and the air communication port and for allowing evaporative fuel to be discharged from the canister through the air communication port, the valve casing, and the second passage. At least one of the first and second valves is bypassed.


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