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. 18, 2001
Filed:
May. 22, 2000
Applicant:
Inventors:
Assignee:
Denso Corporation, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M 3/704 ;
U.S. Cl.
CPC ...
F02M 3/704 ;
Abstract
A fuel vapor purge system has an apparatus for detecting leakage. The apparatus detects leakage based on a detected pressure in the tank. A remaining amount of fuel indicating a capacity of air in the tank and an introducing time of a negative pressure indicating an evaporated amount of fuel are taken into consideration of a detecting process. Therefore, the leakage detection is carried out accurately by compensating influences on the detected pressure by the remaining amount of fuel and an evaporated amount of fuel.