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Emission Control Products
Astra CCRF Technology
The Astra cCRF system is a second generation continuously regenerating diesel particulate filter (or trap) for heavy commercial vehicles & buses.
Astra cCRF employs a “passive” regeneration method requiring no additives, thus utilising using advanced gas exchange techniques. During normal vehicle operation, frequent excursions to high exhaust temperatures, allow the activity of a precious metal coated catalyst to oxidise NO to NO2. NO2 subsequently acts as the catalyst to ensure that soot particles combust as they are collected in the filter.
Astra cCRF systems are truly “second generation” technology as they employ a combination of the latest high activity, fast reacting stainless steel oxidation catalysts, with the proven durability of high efficiency Silicon Carbide particulate filters. Astra cCRF filters are also zone coated with a proprietary combination of base and precious metals to enhance regeneration reliability and NOx performance.
Key Features
Passive regeneration without additives
Fast reacting stainless steel pre catalyst achieving gaseous reductions:-
CO > 90%
HC > 90%
NO to NO2 shift <20%
150 cpsi zone coated silicon carbide filter achieves:-
PM mass reduction > 90%
PM count reduction > 99%
Electronic back pressure and dat recording monitor, provides servicing alerts to the user
Astra cRF technical manual
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