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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.:

US 11453508 B1

PDFFull Text
Date of Patent:
Sep. 27, 2022

Filed:

Dec. 20, 2021

Circulating coolant fluid in hybrid electrical propulsion systems

Applicant:

Pratt & Whitney Canada Corp., Longueuil, CA;

Inventors:

Jean Dubreuil, Boucherville, CA;

Eric LaTulipe, Sainte-Julie, CA;

Assignee:

Pratt & Whitney Canada Corp., Longueuil, CA;

Attorneys:

Locke Lord LLP

Joshua L. Jones

Scott D. Wofsy

Primary Examiner:

Yi-Kai Wang

Int. Cl.
CPC ...
B64D 33/08 (2006.01); B64D 27/02 (2006.01); B64D 27/24 (2006.01); F01M 11/00 (2006.01); F01M 5/00 (2006.01); F01M 1/02 (2006.01); F01M 1/10 (2006.01); F01M 11/03 (2006.01); F16H 57/04 (2010.01); F01D 25/18 (2006.01); F01D 25/12 (2006.01); H02K 7/116 (2006.01); H02K 9/19 (2006.01); H02K 9/26 (2006.01); H02K 11/25 (2016.01); B64D 35/02 (2006.01);
U.S. Cl.
CPC ...
B64D 33/08 (2013.01); B64D 27/02 (2013.01); B64D 27/24 (2013.01); B64D 35/02 (2013.01); F01D 25/12 (2013.01); F01D 25/18 (2013.01); F01M 1/02 (2013.01); F01M 1/10 (2013.01); F01M 5/002 (2013.01); F01M 11/0004 (2013.01); F01M 11/03 (2013.01); F16H 57/0404 (2013.01); F16H 57/0416 (2013.01); F16H 57/0436 (2013.01); F16H 57/0475 (2013.01); F16H 57/0476 (2013.01); H02K 7/116 (2013.01); H02K 9/19 (2013.01); H02K 9/26 (2013.01); H02K 11/25 (2016.01); B64D 2027/026 (2013.01); F01M 2005/004 (2013.01); F01M 2250/60 (2013.01);
Abstract

A hybrid propulsion system includes a heat engine configured to drive a heat engine shaft. An electric motor configured to drive a motor shaft. A transmission system is connected to receive rotational input power from each of the heat engine shaft and the motor shaft and to convert the rotation input power to output power. A first lubrication/coolant system is connected for circulating a first lubricant/coolant fluid through the heat engine. A second lubricant/coolant system in fluid isolation from the first lubrication/coolant system is connected for circulating a second lubricant/coolant fluid through the electric motor.

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