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:
Jun. 19, 2007
Filed:
Dec. 08, 2005
Bon-chang Koo, Hwaseong-si, KR;
Chul-soo Yook, Hwaseong-si, KR;
Bong-kyo Seo, Hwaseong-si, KR;
Chi-kyung Kim, Hwaseong-si, KR;
Bon-Chang Koo, Hwaseong-si, KR;
Chul-Soo Yook, Hwaseong-si, KR;
Bong-Kyo Seo, Hwaseong-si, KR;
Chi-Kyung Kim, Hwaseong-si, KR;
Hyundai Motor Company, Seocho-Ku, Seoul, KR;
Abstract
A method of diagnosing failure of fuel level sensors includes a first measuring step of measuring voltages from first and second failure detection terminals; if the voltage is higher than a reference, diagnosing the voltage as 'high,' and if the voltage is lower than a reference, diagnosing the voltage as 'low;' and if the voltage is neither high nor low: a second measuring step of receiving the voltages from the first and second failure detection terminals; calculating and storing a difference between the voltages of the first and second failure detection terminals; determining whether an amount of fuel is reduced; if the amount of fuel is reduced, calculating a difference between voltage signals of the first and second failure detection terminals; determining whether the voltage difference before and after the amount of fuel was reduced are identical; and if the voltage differences are identical, returning to the first measuring step.