Patent ID: 8985085
Filing Date: 2015-03-24
Classification: F01C,F02B,Y10T

Abstract:
1. A method of limiting radially outwardly directed oil leaks between an end face of a rotor of a Wankel engine and an adjacent end wall of a stator of the engine, the method comprising: providing an annular groove within the end face of the rotor around a shaft of the rotor; inserting an outer seal ring within the annular groove; sealingly engaging an inner seal ring in the annular groove with a first axial surface at a first location and with a second axial surface at a second location, the first and second locations being located within the same annular groove and being axially spaced apart from one another, the first axial surface being a radially inner surface of the outer seal ring; and biasing the inner and outer seal rings against the end wall.