Engineers have been meticulously refining the diesel engine's combustion process during the past decade or so, and the result has been a spectacular reduction in the volume of pollutants exiting the ...

Paccar Parts dealers are now offering the Engine Control Systems Purifilter, an aftermarket passively regenerating diesel particulate filter (DPF) approved by the California Air Resources Board (CARB) ...

The Diesel Particulate Filter (DPF) is an important part of modern diesel vehicles that many people don’t understand. The DPF’s main job is to catch harmful soot and ash from the exhaust stream before ...

Donaldson Company Inc. is currently field-testing its active regeneration diesel particulate filter (DPF) systems. The fuel-injection-based DPF actively monitors the filter’s status and automatically ...