Updated diesel engine software gives truck operators more time to address emissions-system issues while staying compliant ...

Pollutants emitted from combustion sources have been regulated by local and federal governments since the early 1960s. Specific rules vary by state and air district, but they generally apply to ...

The VW ALH 1.9 TDI reaches 500,000 miles without DPF or AdBlue systems. Here's why this simple diesel still makes sense as a ...

Selective catalytic reduction (SCR) systems employing a urea-water solution inject a measured dose of aqueous urea into exhaust gases, where thermal decomposition and hydrolysis generate ammonia. This ...

The Environmental Protection Agency announced it is taking actions to ease the frustration and disruptions around sudden “derates” of diesel engines when they run out of diesel exhaust fluid or have a ...

The Engine Technology Forum (ETF) today announced the launch of its new Selective Catalytic Reduction (SCR) & Diesel Exhaust Fluid (DEF) Policy and Technical Resource Center, a comprehensive online ...

PACCAR has been granted a patent for a method involving a heavy-duty truck’s diesel engine and exhaust after-treatment system. The system includes selective catalytic reduction systems and NOx sensors ...