Question

Name the various advanced technologies adopted in emission control.

Hint:

Tip: Catalytic converter + EGR + DPF = cleaner emissions!

Answer 1

Commonly adopted advanced technologies in emission control systems include:

1. Selective Catalytic Reduction (SCR): Converts nitrogen oxides (NO_x) into nitrogen and water using ammonia or urea.

2. Diesel Particulate Filters (DPF): Capture and eliminate soot and particulate matter from diesel exhaust.

3. Gasoline Particulate Filters (GPF): Similar to DPF, these capture fine particles in petrol engines.

4. Exhaust Gas Recirculation (EGR): Returns a portion of exhaust gases to engine cylinders to lower NO_x formation.

5. Three-Way Catalytic Converter (TWC): Simultaneously reduces hydrocarbons (HC), carbon monoxide (CO), and nitrogen oxides (NO_x) in petrol engines.

6. Onboard Diagnostics (OBD): Monitors emission control systems and identifies faults for compliance.

7. Lean NO_x Traps (LNT): Absorb nitrogen oxides during lean operation and reduce them during rich conditions.

8. Hybrid and Electric Vehicle Technologies: Significantly reduce or eliminate tailpipe emissions via electric propulsion.