ENGINE WITH EXTERNAL HEAT SUPPLY Russian patent published in 1995 - IPC

FIELD: power engineering and transport. SUBSTANCE: engine has heat source 14, heat exchanger 9-12, cold compression chambers 5-8, hot expansion chambers 1-4, and cooling chambers 15- 18 of constant volume and hot chambers 13 of constant volume connected with the compression chambers and expansion chambers through passageways with valves. The cooling chambers of constant volume are interconnected in pair to define the unique cooling space and are in communication with the cold chambers and hot expansion chambers through passageways. The hot chambers of constant volume are also interconnected to define combined common chamber. The inner volume of the combined common chamber is greater than the total volume of the cold compression chamber and hot expansion chamber. EFFECT: enhanced efficiency. 4 cl, 3 dwg