POWEREV

Heat exchangers, not parts of machines; exhaust heat recovery system, namely, a heat exchanger containing a fluid, piping to direct hot gases from engine or motor exhaust into the heat exchanger, piping to vent the gases after they pass through the heat exchanger, and piping to remove, from the heat exchanger, the fluid that was heated by the hot exhaust gases; exhaust heat recovery systems for automobiles, namely, a heat exchanger in which hot engine exhaust gases heat liquid engine coolant, piping to direct hot exhaust gases into the heat exchanger, piping to return heated engine coolant to the engine to promote engine warm-up and fuel efficiency and piping to direct cooled exhaust gases into the muffler and tail pipe

Structural parts for automobiles