Quote:
Originally Posted by freebeard
What OEM parts do you need, the Hydrogen tanks?
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Na, I'm interested in the PEHV. To me, a 1.5L lean burn Atkinson cycle "range extender" engine with a clutched 1 speed "gearbox" to the wheels, mated series-hybrid to a Chevy Volt sized battery is an almost perfect drivetrain.
Honda touted the 2.0 that landed in the 2nd gen Accord hybrid was the most efficient production gasoline engine in the world (the Accord gets almost 25% better highway economy than the Volt on gas alone, despite being bigger), and this appears to be a downsized version of that engine.
EDIT:
Quote:
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The Atkinsonized 2.0L I4 by itself develops 141 horsepower and 122 lb-ft. of torque. It is one of the world’s most thermally efficient powerplants available anywhere in the world. In fact, at 214 g/kWh of 87-octane gasoline fuel, this engine is the most energy efficient mass produced gasoline internal combustion engine available in the world, based on internal testing.
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Using 2755g/gal of gasoline, 214g/kwh means you're getting 12.9kwh of usable energy, which is 38.3% thermally efficient.