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:
Mar. 07, 2023
Filed:
Apr. 01, 2021
Ford Global Technologies, Llc, Dearborn, MI (US);
Thaddeus A Chmielewski, Beverly Hills, MI (US);
Gurpreet Matharu, Dearborn, MI (US);
Marcus Bengtsson, Dearborn, MI (US);
Carlos Armesto, Canton, MI (US);
Bret Alan Zimmerman, Grosse Pointe, MI (US);
Jim Bromham, Trowbridge, GB;
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
Methods and systems are provided for estimation of a volume of liquid diesel exhaust fluid (DEF) contained within a DEF tank. In one example, a method for the estimation of the volume of liquid DEF in a DEF tank during DEF freezing conditions may include activating a heater contained within the DEF tank, and then switching estimation of the volume of liquid DEF via a first transfer function to estimation of the volume of liquid DEF via a second transfer function.