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| turbosteamer ： ウィキペディア英語版 |
turbosteamer
A turbosteamer is a term used by BMW to describe a combined cycle engine. It uses a steam engine to convert waste heat energy from an internal combustion engine into supplemental power for the vehicle. The turbosteamer device is affixed to the exhaust and cooling system. It salvages the heat wasted in the exhaust and radiator (as much as 80% of heat energy) and uses a steam piston or turbine to relay that power to the crankshaft. The steam circuit produces and of torque at peak (for a 1.8 Straight-4 engine), yielding an estimated 15% gain in fuel efficiency. Unlike gasoline-electric hybrids, these gains increase at higher, steadier speeds.〔(BMW TurboSteamer )〕
==Timescale==
BMW has been the pioneer of this concept as early as 2000 under the direction of Dr. Raymond Freymann, and while they are designing this system to fit to most current BMW models, the technology is not expected to reach production until 2015 onward, based on 2005 estimates.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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