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:
Nov. 17, 2015
Filed:
Apr. 24, 2014
Louai a Faied, Rochester Hills, MI (US);
Bryan D Axe, Redford, MI (US);
Louai A Faied, Rochester Hills, MI (US);
Bryan D Axe, Redford, MI (US);
FCA US LLC, Auburn Hills, MI (US);
Abstract
A method includes determining, at a controller having one or more processors, whether an ambient temperature is less than a predetermined temperature indicative of frozen reductant in an exhaust system of an engine. The method includes determining an injector thaw period for a reductant injector in the exhaust system when the ambient temperature is less than the predetermined temperature. The method includes determining a tank thaw period for a reductant tank associated with the exhaust system, the reductant tank being configured to supply reductant to the reductant injector. The method also includes controlling (i) a heater to heat the reductant tank for the tank thaw period and (ii) a current provided to the reductant injector for the injector thaw period, such that the tank thaw period and the injector thaw period end at a same time.