Thermodynamic motor comprising: - a thermodynamic circuit comprising a working fluid, said thermodynamic circuit comprising an evaporator, a motor, a condenser and a compressor, wherein the working fluid circulates in the sequence evaporator - motor - condenser - compressor; - a first cylinder-plunger group with a first cylinder and a first plunger, the thermodynamic motor being characterized by a second cylinder-plunger group with a second cylinder and a second plunger, wherein said first and second plungers are translatingly integral with each other by means of a common stem, wherein: - said first cylinder-plunger group constitutes said compressor of the thermodynamic circuit; - said second cylinder-plunger group constitutes said motor of the thermodynamic circuit; - said evaporator comprises a first thermal exchanger configured to put in a thermal exchange relationship said working fluid of the thermodynamic circuit with a first hot thermal carrier fluid, which is in a thermal exchange relationship with a hot thermal source; - said condenser comprises a second thermal exchanger configured to put in a thermal exchange relationship said working fluid of the thermodynamic circuit with a second cold thermal carrier fluid, which is in a thermal exchange relationship with a cold thermal source. - a thermodynamic circuit comprising a working fluid, said thermodynamic circuit comprising an evaporator, a motor, a condenser and a compressor, wherein the working fluid circulates in the sequence evaporator - motor - condenser - compressor; - a first cylinder-plunger group with a first cylinder and a first plunger, the thermodynamic motor being characterized by a second cylinder-plunger group with a second cylinder and a second plunger, wherein said first and second plungers are translatingly integral with each other by means of a common stem, wherein: - said first cylinder-plunger group constitutes said compressor of the thermodynamic circuit; - said second cylinder-plunger group constitutes said motor of the thermodynamic circuit; - said evaporator comprises a first thermal exchanger configured to put in a thermal exchange relationship said working fluid of the thermodynamic circuit with a first hot thermal carrier fluid, which is in a thermal exchange relationship with a hot thermal source; - said condenser comprises a second thermal exchanger configured to put in a thermal exchange relationship said working fluid of the thermodynamic circuit with a second cold thermal carrier fluid, which is in a thermal exchange relationship with a cold thermal source. - said first cylinder-plunger group constitutes said compressor of the thermodynamic circuit; - said second cylinder-plunger group constitutes said motor of the thermodynamic circuit; - said evaporator comprises a first thermal exchanger configured to put in a thermal exchange relationship said working fluid of the thermodynamic circuit with a first hot thermal carrier fluid, which is in a thermal exchange relationship with a hot thermal source; - said condenser comprises a second thermal exchanger configured to put in a thermal exchange relationship said working fluid of the thermodynamic circuit with a second cold thermal carrier fluid, which is in a thermal exchange relationship with a cold thermal source.