BS6 SCR System Explained 🚛 | How AdBlue Reduces NOx | Complete Working & Troubleshooting

SCR SYSTEM COMPLETE EXPLANATION | BS6 DIESEL ENGINE In this video, we explain the complete Selective Catalytic Reduction (SCR) system used in modern BS6 diesel vehicles and how it helps reduce harmful NOx emissions. Whether you are an *automobile engineer, mechanical engineer, technician, ITI/diploma student, fleet manager, driver, or automobile enthusiast, this video will help you understand the complete SCR system from DEF/AdBlue storage to NOx conversion. BASIC SCR WORKING The SCR system injects Diesel Exhaust Fluid (DEF/AdBlue) into the exhaust stream. DEF produces ammonia, which reacts with NOx over the SCR catalyst and converts harmful NOx primarily into: ➡️ Nitrogen (N₂) ➡️ Water (H₂O) This allows modern diesel engines to meet stringent emission standards while maintaining efficient combustion. 📌 Important components discussed: DEF/AdBlue Tank DEF Pump DEF Filter DEF Injector/Dosing Valve NOx Sensors Exhaust Temperature Sensors SCR Catalyst ECU/DCU Wiring & Communication System Exhaust System 🔍 This video is useful for: Automobile Engineers Mechanical Engineers ITI Students Diploma Students Automobile Technicians Diesel Technicians Fleet Managers Workshop Supervisors BS6 Vehicle Owners Commercial Vehicle Technicians Automobile Enthusiasts If you work with Tata, Ashok Leyland, Mahindra, BharatBenz, Eicher, Volvo, Cummins or other BS6 diesel vehicles*, understanding SCR operation can be extremely useful for diagnosis and maintenance. 👍 If this video helped you understand the SCR system, LIKE the video and SHARE it with other automobile technicians and students. 🔔 SUBSCRIBE for more videos on BS6 technology, diesel engine systems, vehicle diagnostics, SCR, DPF, EGR, ECU and automobile maintenance. #SCRSystem #BS6 #AdBlue #DEF #DieselEngine #NOx #AutomobileEngineering #AutomobileTechnician #DieselTechnology #EmissionControl