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:
Jan. 10, 2017
Filed:
Jan. 10, 2014
Pratt & Whitney Canada Corp., Longueuil, CA;
Jean Thomassin, Ste-Julie, CA;
Andre Julien, Ste-Julie, CA;
Edwin Schulz, Greenfield Park, CA;
Michael Lanktree, La Prairie, CA;
PRATT & WHITNEY CANADA CORP., Longueuil, Quebec, unknown;
Abstract
A method and apparatus for controlling an air input in a rotary engine, including selectively controlling a plurality of inlet ports communicating with an internal combustion cavity of the engine, the ports located serially downstream of the exhaust port relative direction of a revolution of a rotor of the engine. The inlet ports are controlled to alter air intake at various engine operational stages, such as start up, idle, etc., to allow for varying operational requirements to be met. For example: when a power demand on the engine lower than a predetermined threshold, control may be effected by opening a primary inlet port and closing a secondary inlet port; and, when the power demand exceeds the predetermined threshold, control may be effected by opening the primary inlet port and opening the secondary inlet port, the secondary inlet port being located such as to be in communication with the exhaust port throughout portions of the revolution of the engine to purge exhaust gases of the engine.