Unreacted ammonia from selective catalytic reduction processes bypasses the filter and enters the atmosphere. Eliminating this toxic byproduct ensures compliance with stringent environmental regulations.

High-temperature exposure in close-coupled engine environments causes catalyst sintering and loss of active surface area. Preventing this degradation ensures long-term compliance with emission standards under extreme heat.

Untreated diesel engine emissions contain harmful particulate matter and nitrogen oxides that violate environmental standards. Reducing these pollutants ensures regulatory compliance and minimizes environmental impact.