Patent ID: 9322328
Filing Date: 2016-04-26
CPC Classification: F01C,F01P,F02B,F04C,Y02T

Claim Text:
1. An internal cooling passage structure for a rotary engine, comprising: a rotary engine body, having a front frame, a mid-frame and a rear frame, wherein the front and rear frames respectively have corresponding openings; a rotor, rotating in the mid-frame, having core cooling passages respectively beneath rotor triangular apexes, in full or partial connection with the corresponding openings in the front and rear frames in engine operation; and a guide vane attached to a structural rib of the front frame and set along an outside edge of an opening in the front frame, wherein external air is guided into the core cooling passages by the guide vane which avoids generating heat vortices and helps to increase cooling air so as to lower the temperature of the rotor.