Based on Stockton’s experience working with many different fleets, he estimates the safe DPF cleaning interval for an over-the-road truck running 400 to 500 miles a day is 350,000 to 400,000 miles.

SCR technology is proving it can effectively meet 2010 diesel exhaust emissions regulations for medium- and heavy-duty trucks, without adding significant operating or maintenance costs.

Upkeep of today’s single-injector NOx-cutting systems focuses a lot on the diesel particulate filter and other components less so. ... An SCR system, by design, depends on heat to work properly.

The diesel particulate filter (DPF) has continued to improve over its 15-year existence. So have other components of aftertreatment systems (ATS) that help send cleaner exhaust through the DPF.

So, then you'll now you'll have a second one SCR system before your DOC DPF and then you'll have another SCR after that, which is going to drive right increase in DEF usage and what have you.

“The system we have for Tier 4 Interim is our new engine platform – 5-, 6- and 8-cylinder – with common rail (XPI) and SCR,” says Sterner. “For Tier 4 Final we will add some EGR to ...

The SCR is part of the regeneration process: Not true. The only relationship between SCR and the DPF is the heat passing through one system helps to get the other up to temperature so it can do its ...

Today’s new diesel-power trucks are, by law, equipped with particulate filters, and in many models the DPF will soon will be joined by another aftertreatment device — selective catalytic ...

The system also is designed for better regeneration and SCR performance. The SCR catalyst is mounted downstream of the DPF to prevent hydrocarbon, ash or soot from entering the system.

Removing the diesel particulate filter (DPF) or selective catalytic reduction (SCR) system is fairly easy as well, requiring just an exhaust system replacement.

It began with the implementation ofexhaust gas recirculation (EGR) systems, thenprogressed to the diesel particulate filter (DPF), and now the buzz is aroundselective catalytic reduction (SCR ...