Patent ID: 6237560
Filing Date: 2001-05-29
Classification: F01C,F04C

Abstract:
An overexpansion rotary engine comprising:a rotor housing having an inner wall;a rotor rotatably mounted within the rotor housing, with a plurality of sealing blades extending from the rotor, each sealing blade being biased to contact the inner wall, the rotor comprising a plurality of notches, each notch being located between two adjacent sealing blades;an ignitor adjacent the rotor and positioned in a blast guide hole in the housing, the blast guide hole having a substantially parabolic rear wall, each notch having a pressure bearing surface that faces the ignitor at an ignition point during rotation of the rotor;a compression chamber formed by two sealing blades while approaching the ignitor due to the rotation of the rotor; andan expansion chamber formed by two sealing blades after having passed the ignitor due to the rotation of the rotor,wherein a maximum volume of the expansion chamber is greater than a maximum volume of the compression chamber.