Patent ID: 9593580
Date: 2017-03-14
CPC Classifications: F01C,F02B,Y02T

Claim:
1. A rotor for a Wankel engine comprising: two axially spaced apart end faces having a generally triangular profile with outwardly arched sides and three circumferentially spaced apex portions; a peripheral face extending between the end faces and defining three flanks, each flank extending between two of the apex portions, each flank having: a bearing support extending between the end faces to support a rotor bearing, the bearing support having a central axis corresponding to a central axis of the rotor; and a plurality of ribs extending between the end faces from the bearing support to each one of the flanks, the plurality of ribs including, for each flank, a first rib closest to the one of the apex portions and a second rib closest to the other one of the apex portions, each of the apex portions being free of rib connections, the first rib of each flank being connected to the flank at a first junction between the leading and recess portions, and the second rib of each flank being connected to the flank at a second junction between the recess and trailing portions; wherein for each flank, a central line of the first rib intersects a central line of the recess portion at a first intersection, a central line of the second rib intersects the central line of the recess portion at a second intersection, both the first and second intersections being in alignment with a corresponding one of the arched sides when viewed in a plane perpendicular to the central axis of the rotor.