Rotary engine combustion chamber

An apparatus for facilitating combustion in a rotary engine, said apparatus comprising:

• a cavity having a plurality of lobes, adjacent ones of said plurality of lobes joined at a bridge;
• and
• a planetary rotor having a face, said planetary rotor configured to orbit with a inside said cavity, said bridge separating a leading volume from a trailing volume when said bridge is adjacent said face,
• said face having a first section and a second section, said first section defining said leading volume when said planetary rotor is near a top dead center position, said second section adjacent said bridge when said planetary rotor is near said top dead center position, said second section forming a dynamic seal with said bridge to isolate said leading volume from said trailing volume when said planetary rotor travels through said top dead center position:
• and
• a channel through said dynamic seal allowing a compressed gas in said trailing volume to flow into said leading volume, said channel being a groove in said face, said groove having a longitudinal axis that is oblique to a plane perpendicular to an axis of rotation of said planetary rotor.

An apparatus for facilitating combustion in a rotary engine, the rotary engine having a cavity with adjacent lobes joined with a bridge protruding into the cavity, a main rotor inside the cavity, the main rotor having at least one circular cutout, the main rotor having a rim that engages the bridge when the rim is adjacent the bridge, a planetary rotor inside the at least one circular cutout, the planetary rotor configured to orbit about the center of rotation of the main rotor, the planetary rotor having a plurality of faces, each one of the plurality of faces and a corresponding bridge defining a leading volume and a trailing volume when the one face engages the corresponding bridge when the planetary rotor orbits in the cavity, said apparatus comprising:

• a first section of said face, said first section defining a leading volume when said planetary rotor is at a top dead center position;
• a second section of said face, said second section adjacent said bridge when said planetary rotor is at said top dead center position, said second section forming a dynamic seal with said bridge to isolate said leading volume from said trailing volume;
• and
• a channel through said dynamic seal allowing a compressed gas in said trailing volume to flow into said leading volume, said channel being a groove in said face, and said groove having a longitudinal axis that is oblique to a plane perpendicular to an axis of rotation of said planetary rotor.