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:
Sep. 24, 2002
Filed:
Mar. 05, 2002
Applicant:
Inventors:
Takane Hayashi, Yokohama, JP;
Takeshi Tsuyuki, Yokohama, JP;
Shigeaki Kakizaki, Yokohama, JP;
Masato Kobayashi, Yokohama, JP;
Assignee:
Nissan Motor Co., Ltd., Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F03M 3/704 ;
U.S. Cl.
CPC ...
F03M 3/704 ;
Abstract
A fuel vapor emission control device of an engine includes a canister which adsorbs fuel vapor generated in a fuel tank , and a purge valve which opens and closes a pipe connecting the canister and an intake passage of the engine . A controller sets a target purge rate according to a difference between a target air-fuel ratio feedback deviation and an actual air-fuel ratio feedback deviation during purge, and drives the purge valve so that the target purge rate is achieved.