SCRsystemen

SCRsystemen, or Selective Catalytic Reduction systems, are emissions control technologies designed to reduce nitrogen oxide (NOx) emissions from internal combustion engines, particularly diesel engines. NOx is a significant air pollutant contributing to smog and acid rain. The SCR system injects a reducing agent, typically urea dissolved in water (known as Diesel Exhaust Fluid or DEF), into the exhaust stream before it reaches a catalyst. The heat of the exhaust gases converts the urea into ammonia. Within the SCR catalyst, the ammonia reacts with NOx, converting it into harmless nitrogen gas and water vapor, which are then released into the atmosphere. This process significantly lowers the amount of NOx emitted by the vehicle. SCR technology is widely used in heavy-duty trucks, buses, and increasingly in passenger cars to meet stringent emissions regulations. The effectiveness of an SCR system depends on factors such as DEF quality, injection timing, exhaust temperature, and the condition of the catalyst. Regular maintenance and ensuring the DEF tank is properly filled are crucial for the system's optimal performance and compliance with emissions standards.