Enhancing SCR Nox conversion Efficiency and avoid Sulphur poising failures through virtual mechanism for Diesel engines

The transition to BS VI standards has emphasized the importance of maintaining Selective Catalytic Reduction (SCR) systems to effectively reduce nitrogen oxide (NOx) emissions. One of the primary concerns in achieving optimal SCR performance is the potential for SCR poisoning due to excessive Sulphur content in low-quality diesel fuel. Sulphur deposits can accumulate on the catalyst surface over time, significantly compromising its efficiency and leading to increased emissions. To combat this issue, an advanced software system has been integrated into the SCR framework, employing a comprehensive monitoring strategy that assesses idle states, temperature, and mass flow conditions. When the system identifies conditions that may lead to Sulphur poisoning, it activates a desulfation (DeSOx) process designed to remove accumulated Sulphur deposits. This proactive fault detection mechanism is crucial; by initiating regeneration before hardware failure occurs, the system ensures the SCR catalyst maintains its efficiency and functionality. The desulfation process not only enhances the catalyst’s capacity to convert NOx into harmless nitrogen and water but also ensures compliance with stringent emission regulations. Additionally, the software provides real-time feedback, enabling dynamic adjustments to engine operations that further optimize catalyst performance. This study discusses the design, implementation, and performance evaluation of the SCR system, highlighting its potential to substantially reduce NOx emissions while ensuring operational efficiency in high-performance diesel applications.