INTERMEDIATE HOUSING SECTION FOR A MULTI-ROTOR ROTARY INTERNAL COMBUSTION ENGINE AND METHOD ANUFACTURE THEREOF

摘要

The intermediate housing section for a multi-rotor rotary internal combustion engine comprises two open face housing parts which are secured together with the open faces in abutment. Each of the abutting open face surfaces is formed to have an arcuate surface which in the free or unsecured state abut each other along a tangent line formed by an imaginary plane and the arcuate surface. The abutting arcuate surfaces, when the housing parts are secured together at their peripheries, establish compressive stress forces directed inwardly of the peripheries of the housing parts which forces resist the thermal forces tending to move the housing parts out of abutment.