Intake gas heating means for a rotary piston engine

Claim 1

A ROTARY INTERNAL COMBUSTION ENGINE HAVING INTAKE GAS HEATING MEANS, SAID ENGINE COMPRISING AN ENGINE CASING HAVING AN ANNULAR TROCHOIDAL SHAPED INTERNAL PERIPHERAL WALL, A CRANKSHAFT WITHIN SAID CASING, A TRIANGULAR SHAPED ROTARY PISTON MOUNTED ON SAID CRANKSHAFT FOR ECCENTRIC ROTATION WITHIN THE CASING, SAID PISTON HAVING THE APEXES ENGAGING THE INTERNAL PERIPHERAL WALL TO DEFINE SUCTION AND COMPRESSION SPACES BETWEEN THE PISTON AND THE INTERNAL WALL WITHIN SAID ENGINE CASING, SAID CASING HAVING A GAS INTAKE PORT AND AN EXHAUST PORT THEREIN, AN EXHAUST MANIFOLD CONNECTED TO SAID CASING OVER SAID EXHAUST PORT, AND A JACKET AT LEAST AROUND THE PORTION OF SAID CASING ALONG WHICH THE SUCTION SPACE EXTENDS AND DEFINING A FLUID CHAMBER BETWEEN SAID CASING AND SAID JACKET, THE END OF SAID FLUID CHAMBER ADJACENT SAID INTAKE PORT BEING CONNECTED TO SAID EXHAUST MANIFOLD AND SAID FLUID CHAMBER HAVING AN EXHAUST OPENING AT THE OTHER END THEREOF, WHEREBY A PORTION OF THE EXHAUST GASES PASSING THROUGH THE EXHAUST MANIFOLD ARE DIVERTED THROUGH SAID FLUID CHAMBER FOR HEATING THE ENGINE CASING ALONG THE SUCTION SPACE THEREIN.