MCE-5 Variable Compression Ratio Engine: 1.5-Liter With Torque Like a V8!
MCE-5's Prototype Variable Compression Ratio Engine
From Green Car Congress:
At the upcoming 79th International Motor Show in Geneva, France-based MCE-5 Development will showcase its first vehicle application (a Peugeot 407) of a prototype 1.5-liter MCE-5 VCRi (variable compression ratio) gasoline engine. The four-cylinder 1.5L VCRi, equipped with a two-stage turbocharger, develops 220 hp (164 kW) of power (comparable to that of a 3.0L V6 engine), and 420 Nm (310 lb-ft) of torque at 1,500 rpm (comparable to a V8 gasoline engine).
Fuel consumption on the NEDC is 6.7 L/100 km (35 mpg US) with 158 g CO2/km. The technology can be applied to smaller displacements, MCE-5 notes.
What's interesting is that this prototype is not "equipped with GDI (gasoline direct injection) or optimized combustion chambers." The 2010 version of the engine should have these improvements and bring fuel economy to 6.0 L/100 km (39 mpg US) while producing 50 hp more!
Imagine a small car that doesn't need 200+ hp. A 0.8-liter version (or whatever) could probably get very good MPG, possibly running on cellulosic ethanol made from agricultural waste. Not a silver bullet, but this technology would certainly be an improvement on the engines that we have now.
Via Green Car Congress
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