METHOD OF OPERATION OF PNEUMATIC MOTOR AND DEVICE FOR ITS REALIZATION (VERSIONS) Russian patent published in 1998 - IPC

FIELD: mechanical engineering: conversion of thermal energy into mechanical energy. SUBSTANCE: with pneumatic motor operating, working medium is delivered into motor chamber where it expands, then delivery is stopped at moment when piston is in bottom dead center, and cooling agent is injected into closed space surrounding the chamber. When piston reaches top dead center, evaporated cooling agent is discharged. Cooling agent can be subsequently used as working medium in other pneumatic motor. Device has chamber, piston with crank gear, cooling agent nozzle, closed space surrounding the chamber and connected with space between lower cover of chamber and piston. Device can be provided with closed space surrounding the chamber and communicating with chamber of other pneumatic motor mechanically coupled with first pneumatic motor. EFFECT: effective conversion of thermal energy into mechanical energy with no adverse effect on environment. 4 cl, 4 dwg