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:
Jul. 01, 2014
Filed:
Nov. 23, 2011
Marv Hamdan, North Olmsted, OH (US);
Marv Hamdan, North Olmsted, OH (US);
Bendix Commercial Vehicle Systems LLC, Elyria, OH (US);
Abstract
Systems and methods for detecting a blocked air discharge line of an air compressor are described, which include monitoring motor current (IMTR) drawn by a compressor motor (), and calculating a three-point moving average for a steady state current drawn by the compressor motor () upon the motor reaching steady state (nominal) operating speed. A current threshold (IMTR_LIMIT) () is calculated as a function of the three-point moving average, and a determination is made regarding whether a current drawn by the compressor motor () has exceeded the current threshold () and is consistent with a current profile () indicative of a blocked air line (). If a blocked air line is detected, a compressor shut-off command is generated and transmitted to the compressor motor () to shut the compressor motor off prior to opening of a safety valve () on the compressor ().