US 12,435,661 B1
Rotary engine with seal having shield and elastomeric member
Julien Simard-Bergeron, Montréal (CA); David Gagnon-Martin, Longueuil (CA); Jean-Gabriel Gauvreau, Varennes (CA); Stephane Berube, St-Philippe (CA); and Sébastien Bolduc, St-Bruno-de-Montarville (CA)
Assigned to PRATT & WHITNEY CANADA CORP., Longueuil (CA)
Filed by PRATT & WHITNEY CANADA CORP., Longueuil (CA)
Filed on Apr. 8, 2024, as Appl. No. 18/629,115.
This patent is subject to a terminal disclaimer.
Int. Cl. F02B 55/08 (2006.01); F02B 53/00 (2006.01); F16J 15/02 (2006.01)
CPC F02B 55/08 (2013.01) [F16J 15/021 (2013.01); F02B 2053/005 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A housing assembly for a rotary internal combustion engine, comprising:
a rotor housing defining a rotor cavity extending around a rotation axis, the rotor housing extending from a first side to a second side, the rotor housing having an inner face facing the rotor cavity;
a housing secured to the first side of the rotor housing and thereby enclosing the rotor cavity, the housing including a side wall secured to the rotor housing and a side plate, a peripheral section of the side plate disposed between the side wall and the rotor housing; and
a seal received within a groove defined by one or both of the rotor housing and the housing at an interface between the rotor housing and the housing, the groove extending around a perimeter of the first side of the rotor housing, the groove being located radially outwardly of the inner face of the rotor housing, a gap being defined between the rotor housing and the peripheral section of the side plate, the groove communicating with the rotor cavity through the gap, the seal including:
an elastomeric member; and
a shield disposed radially inwardly of the elastomeric member relative to the rotation axis and in contact with both the housing and the rotor housing, the shield including a thermoset plastic member extending along at least a portion of a perimeter of the groove and axially overlapping the elastomeric member relative to the rotation axis, the thermoset plastic member circumferentially, relative to the rotation axis, overlapping a combustion region of the rotor cavity where combustion occurs during operation of the rotary internal combustion engine.