Patent ID: 6128897
Filing Date: 2000-10-10
Classification: F02C

Abstract:
A rotary internal combustion engine comprising:a drive shaft,a drive rotor connected to the drive shaft in a manner fixed against relative rotation, the drive rotor having one or more peripherally distributed rotor chambers that open outwardly and each having a plurality of obliquely extending walls subject to combustion pressure, acting as a kind of drive blade, for converting the combustion pressure into a rotary motion of the rotor, anda stator surrounding the drive rotor having at least one explosion or combustion chamber which opens inwardly toward the drive rotor and having a chamber outlet, past which the rotor chambers move, each rotor chamber having at least two walls simultaneously subject to combustion pressure, wherein at least a portion of an electrical spark plug is disposed within each combustion chamber and at least one mixture inlet or one air inlet and one fuel inlet, each discharge under valve control into each combustion chamber,wherein each chamber outlet (7) of each combustion chamber (5), which on the chamber outlet side is valveless, is oriented approximately at a right angle to each wall that is subject to combustion pressure (9) of each said rotor chamber (10, 75), and each chamber outlet (7) is arranged predominantly at a tangent to a direction of rotor rotation and each wall that is subject to combustion pressure (9) is arranged predominantly radially;wherein one continuous, narrow machined seat (11), which allows rotor rotations and is largely pressure-tight with respect to explosion surges, is provided between the drive rotor (1) and its stator (3), in each case between circumferentially relatively widely spaced adjacent rotor chambers (10, 75);wherein an aspirating rotor (15) is arranged on the drive shaft (12) and is connected to the drive shaft in a manner fixed against relative rotation, the aspirating rotor preceding the drive rotor (1) and aspirating external or cooling air, which for cooling is carried through the drive rotor (1) and via and/or through the stator (3) surrounding the drive rotor with the combustion chambers (5);wherein a compressor rotor (17, 43) is arranged on the drive shaft (12) and is connected to the drive shaft in a manner fixed against relative rotation, the compressor rotor following the drive rotor (1) and compressing the external or cooling air provided thereto during engine operation from the aspirating rotor (15) via the drive rotor (1) and the stator (3);wherein during engine operation the compressed external or cooling air passes via at least one check valve (19) to a pressure reservoir (21) having a compressed air chamber (67) and a fuel tank (23);wherein for an engine starting operation and for engine operation, the pressure reservoir is coupled with at least one valve-controlled mixture forming prechamber (25) leading to the combustion chamber; andwherein during the engine starting operation, the pressure reservoir is in fluid communication with rotor blades of an exhaust gas rotor (27) connected to the drive shaft (12), and after the engine has been stopped the compressed air from the pressure reservoir initially serves to directly provide self-starting of the engine.