Engine apparatus with heat recovery system and relative heat recovery method

摘要

Turbocompound engine apparatus comprising:
an internal combustion engine;
a first recuperation turbine (2, 2') positioned on the exhaust line (1) of the exhaust gases from said engine suitable to provide mechanical power to said engine;
a heat recovery system comprising a closed circuit (6) comprising a working fluid, a heat exchanger (8) positioned on the exhaust line downstream of said first recuperation turbine suitable to allow the transfer of heat from the exhaust gases to said working fluid, a secondary turbine (9) suitable to be operated by said working fluid;
characterized in that said secondary turbine is suitable to provide mechanical power to said engine. Method for recovering the heat of exhaust gases in a system as defined above.