The Hydraulic Launch Assist™ by Eaton Corp. (www.eaton.com), which displayed the technology in a U.S. Army truck at last March's Society of Automotive Engineers Show in Detroit, has a regenerative braking system that can reportedly improve fuel efficiency by 25 to 35 percent, with similar reductions in emissions. The system works by recovering a portion of the energy wasted as heat by the vehicle's brakes. The recovered energy is held in fluid form in an on-board accumulator until the vehicle accelerates. Eaton says the HLA is fit for vehicles with daily routines of much start-and-stop driving.
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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