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:
Jan. 15, 2013
Filed:
Jan. 07, 2010
Kurt D. MC Lain, Clarkston, MI (US);
William R. Cadman, Fenton, MI (US);
David Edward Prout, Linden, MI (US);
Miles K. Maxey, Holly, MI (US);
Robert Jackson, Brighton, MI (US);
Kenneth J. Kalvelage, Rochester Hills, MI (US);
Kurt D. Mc Lain, Clarkston, MI (US);
William R. Cadman, Fenton, MI (US);
David Edward Prout, Linden, MI (US);
Miles K. Maxey, Holly, MI (US);
Robert Jackson, Brighton, MI (US);
Kenneth J. Kalvelage, Rochester Hills, MI (US);
Abstract
A control module and method for operating the same includes a diurnal control valve module that opens a diurnal control valve (DCV) and an evaporative leak check module (ELCM) diverter valve control module that switches on an ELCM diverter valve. The control module includes a correlation module performs a correlation of a ELCM pressure signal and a fuel tank pressure signal and that generates a fault signal in response to the correlation when the DCV valve is open and the ELCM diverter valve is on.