A cellular ceramic substrate developed in the early 1970s by Corning Inc. (www.corning.com; Corning, NY) is said to be the standard for use in catalytic converters used in cars and trucks worldwide. With the potential for the installation of diesel engines in light passenger vehicles-despite the challenge of emissions regulations-Corning has developed a filter that may make that potential more of a real thing. Called the "DuraTrap AT" filter, it is based on an aluminum titanate composition and has a monolithic structure. The material is said to provide the required thermal shock resistance when used in an aftertreatment system. The monolithic structure provides long-term durability. The filter is also engineered with an cell configuration that is said to have ash storage such that there is long filter life.
Volkswagen AG is now providing an aftertreatment system as an option on European Golf, Golf Plus and Touran vehicles that are equipped with the 2.0 TDI engine. This is the first application deploying DuraTrap AT. Said Thomas R. Hinman, Corning vice president and general manager, Diesel Technologies, "There continues to be very strong interest in our new DuraTrap AT filter and we remain engaged in discussions with a number of additional passenger car manufacturers. We are optimistic that we ill have additional commercial applications for our AT product next year" .
Peter F. Volanakis, Corning chief operating officer, is bullish on the potential: "We continue to believe that the global diesel products market could grow into a $1-billion market by 2008 as numerous new clean-air standards take effect around the world."
The filter, incidentally, is being produced by Corning in its plant in Erwin, NY.