Ceramic Industry

Zircotec Develops Diesel Engine Barrier Coating

May 2, 2011

Zircotec recently announced it has developed a new fit-and-forget ceramic coating offering surface temperature reductions of 125°C for diesel engine applications. The new ceramic formulation offers an option for truck and bus manufacturers challenged by the higher temperatures experienced with new Euro VI emissions regulations and testing methods set to be introduced in late 2013.

“Euro VI will require manufacturers to further reduce NOx and particulate matter,” said Peter Whyman, sales director. “There are also changes to the test cycle, including cold start and soak test. During running, engines are running hotter and in these conditions, improved thermal management is likely to help the manufacturers improve performance and overall engine reliability. This is particularly relevant for some after-treatment systems.”

The coating can be applied to exhausts and turbochargers, as well as plastic heatshields, to manage heat, protect other components, and help emissions controls systems work at their optimum.

“From our discussions with engine manufacturers and OEMs, heat management is more crucial with Euro VI,” Whyman said. “Whether this is for SCR engines where getting the catalyst warm is key, or in general terms, the engines are running hotter with heat soak to other components under the engine bay risking poor reliability. We now have a durable, yet cost effective solution and, unlike some lagging products that require reapplication, we can offer reliability throughout the vehicle’s life.”

The coating is applied using plasma spraying, in effect welding the coating to the substrate. It can be applied to most metals, as well as many plastics and composites.

For additional details, visit www.zircotec.com.