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. 02, 2022
Filed:
Aug. 08, 2019
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Sitaram Rejeti, Farmington, MI (US);
Robert Roy Jentz, Westland, MI (US);
Sridhar Kalivarapu, Canton, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06G 7/70 (2006.01); F02D 41/22 (2006.01); F01P 7/16 (2006.01); F01P 11/16 (2006.01);
U.S. Cl.
CPC ...
F02D 41/221 (2013.01); F01P 7/16 (2013.01); F01P 11/16 (2013.01); F01P 2023/00 (2013.01); F01P 2025/30 (2013.01); F01P 2025/32 (2013.01); F02D 2200/021 (2013.01);
Abstract
Methods and systems are provided for monitoring a status of a heater core isolation valve (HCIV) housing in an engine coolant circuit including a first coolant loop and a second coolant loop. In one example, a method may include indicating degradation of the HCIV based on a difference between a first coolant loop temperature and a second coolant loop temperature upon activation of coolant system pumps and deactivation of a positive temperature coefficient (PTC) heater housed in the cabin heating loop.