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In general, the SCR unit is located between the furnace economizer and the air heater, and the ammonia is injected into the catalyst chamber through an ammonia injection grid. As in other SCR applications, the temperature of operation is critical. Ammonia slip (unreacted ammonia) is also an issue with SCR technology used in power plants.
LDT1: a light-duty truck with a loaded vehicle weight of up to 3750 pounds. LDT2: an LEV II light-duty truck with a loaded vehicle weight of 3751 pounds to a gross vehicle weight of 8500 pounds; LED: Light Emitting Diode; LEV: Low-emission vehicle; LPG: Liquified petroleum gas; LVW: Loaded vehicle weight; MAC: Mobile air conditioning
This method may take significant time before the SCR exhaust cleaning system is fully operational, often up to an hour. [4] Another method to thaw DEF (and thus allow for full SCR operation) is to integrate an electric heater into the DEF tank. This heater must be sized, positioned, and powered adequately to rapidly melt sufficient frozen DEF.
BlueTEC is Mercedes-Benz Group's marketing name for engines equipped with advanced NO x reducing technology for vehicle emissions control in diesel-powered vehicles.The technology in BlueTec vehicles includes a selective catalytic reduction (SCR) system that uses diesel exhaust fluid, and a system of NOx adsorbers the automaker calls DeNO x, which uses an oxidizing catalytic converter and ...
The SCR was rugged with an indefinite lifetime, but very prone to unwanted trigger impulses which would turn the SCR 'on'. Unwanted trigger impulses in early attempts at using SCRs for CD ignitions were caused by electrical interference, but the main culprit proved to be 'points bounce'. Points bounce is a feature of a points-triggered system.
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Ruf SCR, a sports car manufactured by German automobile manufacturer Ruf Automobile; Scandinavian Mountains Airport (IATA: SCR), Dalarna, Sweden; Siler City Municipal Airport (FAA LID: SCR), Siler City, North Carolina; Smyrna Cassaba Railway, an Ottoman railway; South Central Railway in India; South Coast Rail, a future MBTA Commuter Rail line
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