Ravi Krishnan has been widely recognized for his pioneering contributions to the development and evaluation of emission control strategies for diesel and natural gas reciprocating internal combustion (RICE/IC) engines. His extensive research and analysis on Selective Catalytic Reduction (SCR) economics have played a critical role in informing regulatory decision-making. Krishnan’s insights have been cited by the U.S. Environmental Protection Agency (EPA) and other regulatory bodies, helping to shape key rulemakings and compliance frameworks for stationary and mobile IC engines. His work bridges technical rigor with real-world applicability, providing stakeholders with actionable guidance on cost, performance, and implementation pathways for SCR technologies in diverse industrial and power generation applications.