Abstract The present invention provides a rotary internal combustion engine comprising a stator, and a rotor journalled for rotation in said stator, said stator considered in a plane normal to its axis of rotation having a cross-section which is approximately an equilateral triangle with curvilinear sides, each side of said rotor having its external peripheral surface defining with the internal periphery of said stator a respective combustion chamber, the external peripheral surface of each side of said rotor including considered in the direction of rotation of said rotor an upstream surface portion having a relatively great radial component so as to receive maximum rotary thrust from the expanding combustion gases, an intermediate surface portion which is curvilinear and which extends from said upstream surface portion so as with said upstream surface portion to define relative to the internal periphery of the stator a part of the combustion chamber and receive less thrust than said upstream portion, and a downstream surface portion which extends from said intermediate portion to the radially outer end of the next succeeding upstream portion.
A rotary internal combustion engine comprising a stator housing, a driving shaft journalled for rotation in said stator housing, an eccentric mounted on said driving shaft and positioned in said stator housing, and a rotor carried by said eccentric for rotation in said housing, said rotor considered in a plane normal to the axis of rotation of the driving shaft having a cross-section which is approximately an equilateral triangle with curvilinear side, each side of said rotor having its external peripheral surface defining with the internal periphery of the stator housing a respective combustion chamber, each side surface of the rotor having a recess which extends radially from said surface, said recess being approximately the shape of an isosceles triangle and having its base at the leading end and its apex at the trailing end when considered in the direction of rotation of the rotor, said recess being bounded by: (i) a leading end face, at the base end of the recess, which is substantially normal to the peripheral side surface of the rotor for receiving maximum thrust from combustion gases circulating angularly in the stator housing, and (ii) a trailing face extending circumferentially from the radially-inner edge of said leading face to merge with said side surface of the rotor, said trailing face including a first intermediate face portion extending from said leading face, and a second end face portion extending from said intermediate portion, said first and second face portions being shaped in relation to the internal surface of the stator housing so as to constitute an aerodynamic accelerator providing turbulence during the intake and explosion strokes.
Claim 2
Dependent Claim
269 words
A rotary internal combustion engine comprising a stator housing, a driving shaft journalled for rotation in said stator housing, an eccentric mounted on said driving shaft and positioned in said stator housing, and a rotor carried by said eccentric for rotation in said housing, said rotor considered in a plane normal to the axis of rotation of the driving shaft having a cross-section which is approximately an equilateral triangle with curvilinear side, each side of said rotor having its external peripheral surface defining with the internal periphery of the stator housing a respective combustion chamber, each side surface of the rotor having a recess which extends radially from said surface, said recess being approximately the shape of an isosceles triangle and having its base at the leading end and its apex at the trailing end when considered in the direction of rotation of the rotor, said recess being bounded by: (i) a leading end face, at the base end of the recess, which is substantially normal to the peripheral side surface of the rotor for receiving maximum thrust from combustion gases circulating angularly in the stator housing, and (ii) a trailing face extending circumferentially from the radially-inner edge of said leading face to merge with said side surface of the rotor, said trailing face including a first intermediate face portion extending from said leading face, and a second end face portion extending from said intermediate portion, said first and second face portions being shaped in relation to the internal surface of the stator housing so as to constitute an aerodynamic accelerator providing turbulence during the intake and explosion strokes.