Rotary piston internal combustion engine

Claim 1

A rotary piston internal combustion machine which includes a stationary housing witH an epitrochoidal inner contour, a shaft journaled in said housing and provided with an eccentric, a rotary piston rotatable relative to said inner contour of said housing and journaled on said eccentric for rotation relative thereto, said piston being of polygonal cross-sectional shape so as to have a plurality of circumferentially spaced edge means extending in the direction of the axis of rotation of said piston relative to said housing, said piston having those areas thereof which are located between said edge means and face said inner contour of said housing respectively provided with trough-shaped depressions forming combustion chambers and extending in the circumferential direction of said piston, each of said combustion chamber means located between two circumferentially successive edge means including wall means having deflecting surface means extending substantially transverse to the direction of rotation of said piston relative to said housing for deflecting fuel gas in said chamber means turbulently in a direction transverse to the circumferential direction of said rotary piston, said chamber means having a plurality of branches branched off laterally over its length, the branched-off portions of said chamber means being located at the front and rear end portions of said chamber means and being substantially parallel to each other, said branched-off portions comprising the deflecting wall means.