HEAT ENGINE Russian patent published in 1995 - IPC

FIELD: engine engineering. SUBSTANCE: second compression chamber of double-directed by-passing is mounted oppositely to the first compression chamber. The chambers are made up of increased and decreased alternating spaces with double-directed by-passing on one side of pistons which move toward to each other. The other end is provided with similar chambers having varying volume and second by-passing. The chambers are hydraulically independent and mechanically coupled with pins of the pistons. A shaft of the compressor is in communication with a flywheel with -1 gear ratio. EFFECT: enhanced efficiency. 4 dwg