Selective catalytic reduction (SCR)
Uses DEF/urea chemistry where ammonia generated from DEF dosing reacts with NOx over the catalyst to form nitrogen and water when dosage timing, dosing rate, and catalyst temp are correct.
Uses DEF/urea chemistry where ammonia generated from DEF dosing reacts with NOx over the catalyst to form nitrogen and water when dosage timing, dosing rate, and catalyst temp are correct.