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. 12, 2015
Filed:
Oct. 13, 2011
Applicant:
André Julien, Ste-Julle, CA;
Inventor:
André Julien, Ste-Julle, CA;
Assignee:
Pratt & Whitney Canada Corp., Longueuil, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02G 3/00 (2006.01); F02B 33/44 (2006.01); F02B 53/10 (2006.01); F02B 53/08 (2006.01); F02B 33/00 (2006.01); F01C 1/02 (2006.01); F01C 1/22 (2006.01); F01C 11/00 (2006.01); F01C 21/08 (2006.01); F01C 21/18 (2006.01); F01C 20/06 (2006.01); F01C 20/10 (2006.01); F01C 20/24 (2006.01); F01C 21/06 (2006.01); F01C 21/10 (2006.01); F04C 29/00 (2006.01);
U.S. Cl.
CPC ...
F01C 1/22 (2013.01); F01C 11/006 (2013.01); F01C 20/06 (2013.01); F01C 20/10 (2013.01); F01C 20/24 (2013.01); F01C 21/06 (2013.01); F01C 21/08 (2013.01); F01C 21/106 (2013.01); F01C 21/18 (2013.01); F01C 21/183 (2013.01); F04C 29/0092 (2013.01); F04C 2240/20 (2013.01); F04C 2240/80 (2013.01);
Abstract
A compound engine system comprising a rotary engine having a volumetric compression ratio lower than its volumetric expansion ratio, and a recess defined in the peripheral wall of the rotor in each of the chambers having a volume of more than 5% of the displacement volume of the chamber. The expansion in the turbine section compensates for the relatively low expansion ratio of the rotary engine.