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:
Apr. 13, 2021
Filed:
Sep. 13, 2019
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventors:
Michael A. Smith, Clarkston, MI (US);
Eugene V. Gonze, Pinckney, MI (US);
Eric E. Klauser, Orchard Lake, MI (US);
Christopher H. Knieper, Chesaning, MI (US);
Assignee:
GM GLOBAL TECHNOLOY OPERATIONS LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B 49/00 (2006.01); F01P 7/14 (2006.01); F04B 23/04 (2006.01);
U.S. Cl.
CPC ...
F04B 49/007 (2013.01); F01P 7/14 (2013.01); F04B 23/04 (2013.01); F01P 2007/146 (2013.01); F01P 2023/08 (2013.01); F01P 2025/32 (2013.01); F01P 2031/00 (2013.01);
Abstract
A method of diagnosing a mechanical coolant pump in an automobile equipped with cooling system having a mechanical coolant pump and an electric coolant pump comprises detecting when an engine of the automobile has been started, dis-engaging the electric coolant pump, engaging the mechanical coolant pump, and verifying the mechanical coolant pump is operating properly.