Incomplete removal of nitrogen oxides from exhaust gas streams. Reducing these pollutants prevents environmental degradation and meets regulatory compliance.

Cold-start exhaust streams and low-load diesel cycles fail to reach the thermal threshold required for effective catalytic reduction. Addressing this limitation prevents the release of untreated nitrogen oxides and ammonia slip during transient engine operations.

Untreated diesel engine emissions fail to meet regulatory standards due to low catalytic efficiency. Reducing these pollutants prevents environmental degradation and ensures legal compliance.