Rotary Engine Housing

An engine housing for a powerplant assembly, the engine housing comprising:

• a rotor housing including a rotor housing body, the rotor housing body extending about an axis to form a rotor cavity of the engine housing, the rotor housing body extending between and to a first axial housing end and a second axial housing end;
• and
• a side housing assembly including a side housing body, a side plate, and a shim assembly,
• the side housing body disposed at the first axial housing end,
• the side plate including an inner plate side, an outer plate side, and a perimeter edge extending from the inner plate side to the outer plate side, the perimeter edge disposed axially between the rotor housing body and the side housing body, the inner plate side further forming the rotor cavity, and
• the shim assembly disposed at the perimeter edge, the shim assembly including a shim body and at least one compliant member, the shim body disposed on the side housing body and axially spaced from the outer plate side by an axial gap, the at least one compliant member disposed between the shim body and the outer plate side forming the axial gap.

A powerplant assembly comprising:

• a driven rotor;
• an engine shaft operably coupled with the driven rotor, the engine shaft rotatable about a rotational axis;
• a rotor assembly including a first rotor coupled with the engine shaft;
• a rotor housing forming a rotor cavity for the first rotor, the rotor housing including a rotor housing body, the rotor housing body extending about the rotational axis, the rotor housing body extending between and to a first axial housing end and a second axial housing end;
• and
• a side housing assembly including a side housing body, a side plate, and a shim assembly,
• the side housing body disposed at the first axial housing end,
• the side plate disposed axially between the rotor housing body and the side housing body, the side plate including an inner plate side, an outer plate side, and a perimeter edge extending from the inner plate side to the outer plate side, the inner plate side further forming the rotor cavity, and
• the shim assembly including a shim body and at least one compliant member,
• the shim body extending between and to an outer axial side surface and an inner axial side surface, the shim body extending between and to an outer radial side surface and an inner radial side surface, the outer axial side surface, the outer radial side surface, and the inner radial side surface disposed on the side housing body, the inner axial side surface disposed adjacent and axially spaced from the outer plate side by an axial gap, the at least one compliant member disposed between and contacting the shim body and the outer plate side at the inner axial side surface.