Soot capacity is not a fixed property of a filter material alone. Exhaust conditions determine how quickly soot accumulates, while regeneration determines how often it
Two catalysts can use similar active chemistry yet expose it to a process stream through very different structures. A honeycomb gives fluid defined channels through
A catalyst may lose activity even while gas can still pass through its reactor. The cause can lie at the active surface, in the support,
Vanadium pentoxide belongs to a particular NOx-control chemistry: selective catalytic reduction, or SCR, uses ammonia to reduce nitrogen oxides toward nitrogen and water. A catalytic
Space for an exhaust component is rarely a clean cylinder. Floor panels, frame members, heat shields, or neighboring pipes can limit one dimension while leaving
A 400 CPSI converter can have an acceptable pressure loss on its own and still sit in an exhaust line with excessive total backpressure once
Engine movement reaches a converter through its mounts as repeated vibration and occasional shock, while thermal cycling adds expansion and contraction. The substrate must remain
Diesel emissions include gases and solid particles, so an exhaust system needs more than one treatment mechanism. A catalytic converter exposes gaseous compounds to coated
A soot filter cannot reduce NOx by trapping it, and an SCR catalyst cannot collect soot as a filter does. Diesel exhaust needs both functions
At peak exhaust flow, a converter may offer sufficient catalytic activity in theory, yet still impose too much resistance on the engine. Opening the flow path
