Variable orifice valve (VOV(TM)) is located in the liquid refrigerant line between the condenser and the evaporator in an automobile's A/C loop and uses thermostatic bi-metal technology to react to condenser discharge temperatures. This controls variable restriction levels to provide performance for air conditioning systems. The VOV also offers variable restriction levels, which results in performance under all driving conditions from highway to city driving to idling.
Texas Instruments, Materials and Controls Group, Attleboro, MA.
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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