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:
Oct. 07, 1997
Filed:
Mar. 18, 1996
Applicant:
Inventor:
Takayuki Otsuka, Susono, JP;
Assignee:
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M / ; G01M / ;
U.S. Cl.
CPC ...
73 4 / ; 73 492 ; 73 497 ;
Abstract
A device for detecting leakage of fuel vapor including a pressure sensor which is arranged in a fuel vapor conduit connected to the fuel tank. The pressure sensor detects the pressure inside the fuel tank. It is judged that the fuel vapor has not leaked from the fuel tank or the fuel vapor conduit before the engine is stopped based on the pressure inside the fuel tank detected by the pressure sensor and it is judged that the reattachment of the fuel cap has been forgotten when it is judged that the fuel vapor is leaking from the fuel tank when the operation of the engine is restarted after stopping of the engine.