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:
Aug. 23, 2016
Filed:
Sep. 23, 2011
Sam Reddy, West Bloomfield, MI (US);
Kevin Walsh, Penngrove, CA (US);
Sam Reddy, West Bloomfield, MI (US);
Kevin Walsh, Penngrove, CA (US);
KARMA Automotive LLC, Costa Mesa, CA (US);
Abstract
A fuel tank evaporative emissions control and diagnostic system includes a fuel tank, a canister in fluid communication with the fuel tank to receive vapor escaping from the fuel tank, at least one isolation valve positioned between the fuel tank and the canister, a pressure sensor in fluid communication with the canister, a purge valve positioned between the canister and an internal combustion engine to be in fluid communication with the canister and the internal combustion engine, a canister vent valve positioned on an air inlet of the canister for allowing air to purge vapor from the canister to exit the and into the internal combustion engine, and one or more electronic controllers coupled to the pressure sensor, the isolation valve, the purge valve, and the canister vent valve for controlling the valves according to a preset diagnostic test for checking for malfunctions in the system.