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.

Date of Patent:
Aug. 14, 2018

Filed:

Aug. 25, 2016
Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

Kerfegar K. Katrak, Fenton, MI (US);

Kunal Tipnis, Troy, MI (US);

Michael B. Mero, Oxford, MI (US);

Assignee:

LG Chem. Ltd., Seoul, KR;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F04D 27/00 (2006.01); F04D 25/06 (2006.01); F04D 25/16 (2006.01); F04D 29/32 (2006.01);
U.S. Cl.
CPC ...
F04D 27/004 (2013.01); F04D 25/068 (2013.01); F04D 25/0693 (2013.01); F04D 25/166 (2013.01); F04D 27/001 (2013.01); F04D 29/325 (2013.01);
Abstract

A system for controlling operation of first and second electric fans is provided. The system includes a microcontroller that determines when first analog multiplexer is malfunctioning or a first channel of the first analog-to-digital converter is malfunctioning based on first values obtained from the first analog-to-digital converter. The first values are associated with at least one of a first speed signal associated with the first electric fan and a first driving voltage for the first electric fan that are received by the first analog multiplexer. The microcontroller modifies a control signal to induce the second electric fan to operate at a higher rotational speed when the first analog multiplexer is malfunctioning or the first channel of the first analog-to-digital converter is malfunctioning.


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