INTERNAL COMBUSTION ENGINE AND METHOD OF ITS OPERATION Russian patent published in 1997 - IPC

FIELD: mechanical engineering; divided cycle engines. SUBSTANCE: combustion products from expansion cylinder and additional expansion cylinder are directed into turbine which drives a compressor. Processes of fuel combustion and partial expansion of combustion products in combustion cylinder are carried out with 180 crankshaft degree advance relative to processes of passage through valve and further expansion of combustion products in expansion cylinders. For this purpose engine is provided with additional expansion cylinder with expansion piston. Additional expansion cylinder is connected with combustion cylinder through bypass member in form of valve. Engine is furnished with turbine to drive compressor. Turbine is connected to one or two expansion cylinders. One or both pistons, if two expansion cylinders are used, and compression piston are coupled through connecting rods with corresponding cranks of crankshaft. Cranks of crankshaft engaging with expansion pistons are shifted through 180 degrees relative to crank engaging with combustion piston. EFFECT: enlarged operating capabilities. 3 cl, 4 dwg