Sarah J Rose

US Patent:

20150240638, Aug 27, 2015

Filed:

Aug 28, 2013

Appl. No.:

14/424423

Inventors:

- Oakland CA, US
Sarah Warren Rose - Valley Village CA, US

Assignee:

The Regents of The University of California - Oakland CA

International Classification:

F01C 19/02
F01C 1/22
G06F 17/50
F01C 21/08

Abstract:

A method for designing an apex seal, a rotor housing, and a rotor includes defining a rotor radius describing a distance between a rotor housing and a specified point within a rotor pitch curve p defining a switch angle describing a portion of an apex seal of the rotor to contact the rotor (START) housing, and identifying a generating curve g from the rotor radius and the switch angle. A conjugate curve g represents an envelope of patterns traced by the generating curve g as the rotor pitch curve p is moved along a housing pitch curve p A rotor flank curve g represents an inside envelope of patterns traced by the conjugate curve g as the housing pitch curve p is moved along the rotor pitch curve p Curves g g and g may represent profiles of an apex seal, a rotor housing, and a rotor, respectively.