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Two long-haul trucks operating in Europe equipped with a new N[O.sub.X] control system are currently meeting the Euro 4 standards for N[O.sub.X], which will come into effect in 2005 throughout the continent, according to Engelhard Corp., which worked with TNO Automotive to develop the selective catalytic reduction (SCR) system used on the vehicles. The one-year field tests are being conducted to evaluate the commercial potential of the SCR system. In the new system, a truck's silencer is replaced with a catalyst unit. A water/urea solution is injected at the entrance of the catalyst in order to activate the reduction process. Heat in the exhaust converts the urea solution into gaseous ammonia. Within the catalyst unit, the ammonia reacts with N[O.sub.X] in the exhaust gas and is converted into nitrogen and water. The SCR system is reducing N[O.sub.X] emissions by around 80 percent for the European Stationary Cycle (ESC) and 70 percent for the European Transient Cycle (ETC).

In the joint-development program, Engelhard developed the catalyst technology, including packaging of the SCR catalyst/muffler, while TNO was responsible for the overall system integration, calibration and testing.

The Lubrizol Corp. said it will provide BP with its proprietary PuriN[O.sub.X] low-emission diesel fuel technology, which will enable BP to blend its new Aspira low-emission fuel for diesel engines, a key part of the BP System City low-emissions initiative. BP's first System City customer is Arriva, one of the largest transport services organizations in Europe and the largest bus operator in London. Arriva is running Aspira in its 120-plus-vehicle London Clapton garage fleet. BP will further channel sales of this offer directly to centrally fueled diesel engine fleets, which include on- and off-road applications, such as pickup and delivery vehicles, urban and school buses, waste management fleets, agricultural vehicles, mining and construction equipment, coastal marine ships and stationary power generators.

PuriN[O.sub.X] low-emission diesel fuel technology incorporates a special blending system provided by Lubrizol to mix the components of the fuel into a water-in-diesel emulsion that is stable and safe enough to burn in engines traditionally run on normal diesel fuel. BP will purchase the special additive chemistry from Lubrizol in order to blend the water with the fuel.

# posted by Medical Information : 4:11 AM