Turbo, air-hybrid Scuderi split cycle engine achieves 64 mpg US in simulations; CO2 emissions of 85 g/km
The Scuderi Group released findings from a computer simulation study measuring the performance of the Scuderi split-cycle engine modeled against the European class of “high economy” vehicles. The data showed that a turbocharged/air-hybridized Scuderi Engine (earlier post) can achieve at least 64 mpg US (3.7 liters per 100 km) while emitting 85 g CO2/km.
The average consumption of typical, comparable vehicles is 4.5 l/100 km with average CO2 emissions of 104 g/km.
The comparison is based on a consumption and emissions analysis of 10 typical four-seat small cars ranging from the Audi A1 to the Fiat 500 to the Toyota AYGO, all fitted with the most economical Otto engine variant. The Scuderi Group commissioned Southwest Research Institute (SwRI) in San Antonio, Texas, to generate a representative average vehicle in this class with technical data from these models and use this as the basis for a comparison simulation according to the new European driving cycle (NEDC).
A respectable reduction in fuel consumption of almost 20% and similarly lower CO2 emissions in the already economical small car class is just the beginning as we are developing a variety of new technologies to further boost the fuel economy.—Lutz Deyerling, Vice President of European Operations and Corporate Strategy
Consistent with conventional four-stroke engine designs, the combustion cycle of the Scuderi Engine has two high-pressure strokes—compression and power. The Scuderi Engine achieves its lowest rate of fuel consumption when utilizing a turbocharger in Miller Cycle configuration, which can be readily achieved by differential sizing of compressor and expander cylinders. The design is also optimized for air hybridization (when a small air tank is applied to capture and reuse wasted energy).
Scuderi Group will provide more details on the results of the European economy vehicle study at the IAA Frankfurt Car Show in Germany during a press conference scheduled for 13 September.