BMW provides an update on waste heat recovery projects; Turbosteamer and the Thermoelectric Generator
Green Car Congress
AUGUST 30, 2011
Research project Turbosteamer, Generation 2. Click to enlarge. Despite improvements in engine efficiency—e.g., with technologies such as direct fuel injection, variable valve timing, exhaust-driven turbochargers, brake energy regeneration and Auto Start Stop function—about 60% of the generated energy is still lost, half of it being exhaust heat, with the remaining half as heat absorbed by the engine cooling system.