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. 10, 2014
Filed:
Dec. 02, 2011
Paul D. Perry, Chatham, CA;
Adrian O. Crisan, Chatham, CA;
Paul D. Perry, Chatham, CA;
Adrian O. Crisan, Chatham, CA;
Continental Automotive Systems, Inc., Auburn Hills, MI (US);
Abstract
A vapor management system () includes a sense tube () disposed in a fuel tank (). A differential pressure sensor () has one side connected to the sense tube and another side connected to a vapor cavity so that the pressure sensor can measure a differential pressure (DP) between a volume of the vapor cavity and a volume of the sense tube containing liquid fuel. A temperature sensor () is in the vapor cavity. A processor 1) receives DP and T measurements at certain time intervals to determine the temperature at time zero (T), the differential pressure at time zero (DP), the temperature at a certain time (T), and the differential pressure at a certain time (DP), and 2) when (T−T) is greater than a certain value, compares DPto a certain differential pressure value.