The technical study, Efficiency Merit Function for Spark Ignition Engines, was among two studies recently released by the Department of Energy (DOE) Co‐Optimization of Fuels & Engines (Co‐Optima) initiative. The merit function is a mathematical model which quantifies the fuel efficiency potential associated with different fuel properties for boosted spark ignition engines. Sandia led the development of the efficiency metric study with contributors from across the DOE national laboratories. Combined, the two studies aim to provide American industry with the scientific foundation needed to maximize engine efficiency and fuel performance, thereby enabling increased fuel economy and more affordable transportation.
The Department of Energy (DOE) Co‐Optimization of Fuels & Engines (Co‐Optima) initiative is accelerating the introduction of efficient, clean, affordable, and scalable high‐performance fuels and engines. This effort brings together national laboratories, universities, and industry stakeholders to simultaneously tackle fuel and engine research and development (R&D) and maximize light‐, medium‐, and heavy‐duty vehicle fuel economy and performance while mapping lower‐cost pathways to reduce emissions, leveraging diverse domestic fuel resources, boosting U.S. economic productivity, and enhancing national energy security.