Engineers at Ohio State University are developing a computer control system that improves the fuel efficiency of hybrid gasoline-electric vehicles. Road tests on a Chevy suburban SUV show a 50% increase in fuel efficiency. "The work demonstrates that energy-efficient hybrid cars can retain the high-performance feel of traditional gas-powered vehicles," says Giorgio Rizzoni, professor of mechanical engineering. Based on numerical simulations and in-vehicle tests, the engineers created a computerized control system that relies on algorithms for optimizing the power split between engine and electric motor. For more information, go to www.osu.edu.
A bold, gold, open-air coupe may not be the ticket to automotive nirvana for every consumer, but Lexus’ LF-C2 concept car certainly turned heads at the recent Los Angeles Auto Show. What’s more, it may provide a glimpse of the luxury automaker’s future.
The complexity of diesel engines means optimizing their performance requires a large amount of experimentation. Computational fluid dynamics (CFD) is a very useful and intuitive tool in this, and cold flow analysis using CFD is an ideal approach to study the flow characteristics without going into the details of chemical reactions occurring during the combustion.
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