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. 16, 1990
Filed:
Aug. 18, 1989
Applicant:
Inventors:
Kouji Uranishi, Susono, JP;
Takaaki Itou, Mishima, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
123520 ; 1231 / ; 123519 ; 123494 ;
Abstract
A device for detecting a malfunction of a fuel evaporative purge system comprises a temperature sensor for detecting a temperature inside a canister. During the absorbing and purging operations of the purge system, the device calculates changes in the temperature when absorbing and purging and compares the temperature changes with predetermined values denoting that the purge system is operating normally, and determines whether a malfunction has occurred in the purge system from the result of the comparison.