Co-Optimization of Fuels and Engines (Co-Optima) -- Introduction

John Farrell, Robert Wagner, John Holladay

Research output: NRELPresentation


The Co-Optimization of Fuels and Engines (Co-Optima) initiative is a U.S. Department of Energy (DOE) effort funded by both the Vehicle and Bioenergy Technology Offices. The overall goal of the effort is to identify the combinations of fuel properties and engine characteristics that maximize efficiency, independent of production pathway or fuel composition, and accelerate commercialization of these technologies. Multiple research efforts are underway focused on both spark-ignition and compression-ignition strategies applicable across the entire light, medium, and heavy-duty fleet. A key objective of Co-Optima's research is to identify new blendstocks that enhance current petroleum blending components, increase blendstock diversity, and provide refiners with increased flexibility to blend fuels with the key properties required to optimize advanced internal combustion engines. In addition to fuels and engines R&D, the initiative is guided by analyses assessing the near-term commercial feasibility of new blendstocks based on economics, environmental performance, compatibility, and large-scale production viability. This talk will provide an overview of the Co-Optima effort.
Original languageAmerican English
Number of pages31
StatePublished - 2017

Publication series

NamePresented at the Vehicle Technologies Office (VTO) Annual Merit Review and Peer Evaluation, 5-9 June 2017, Washington, D.C.

NREL Publication Number

  • NREL/PR-5400-68300


  • biofuels
  • co-optimization
  • engines
  • fuels
  • life cycle analysis
  • techno-economic analysis


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