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:
May. 22, 2018
Filed:
Oct. 27, 2015
Ford Global Technologies, Llc, Dearborn, MI (US);
Hafiz Shafeek Khafagy, Dearborn, MI (US);
Kirk Pebley, Novi, MI (US);
Eric Michael Rademacher, Royal Oak, MI (US);
Michael J. Irby, Monroe, MI (US);
James C. Rollinson, Superior Township, MI (US);
FORD GLOBAL TECHNOLOGIES, LLC, Dearborn, MI (US);
Abstract
A vehicle climate control system includes a heat exchanger to heat ambient air using engine waste heat, and a plurality of positive temperature coefficient (PTC) heating elements to heat air passed through the heat exchanger. The vehicle also includes a controller programmed to, while the vehicle is driven without engine propulsion, issue a command to sequentially de-energize the PTC heating elements before an upcoming engine activation. The sequential de-energization of the PTC heating elements is performed according to a schedule that is based upon a power surge dissipation time.