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:
Mar. 07, 1989
Filed:
Oct. 28, 1987
Applicant:
Inventors:
Kouji Uranishi, Susono, JP;
Takaaki Itou, Mishima, JP;
Assignee:
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
123520 ; 123518 ;
Abstract
In a fuel-vapor emission control system of an internal combustion engine having a purge control valve, a first start of the engine is detected after a fuel supply to the fuel tank and the time from when the engine is started is measured. Then, the amount of fuel-vapor purged from a canister filled with an adsorbent for capturing fuel-vapor is decreased for a predetermined time period. As a result, when the engine is started for the first time after the fuel supply, the amount of fuel-vapor purged is decreased to thereby improve the emission characteristic and the driveability of the vehicle.