ClearFlame Engines is developing a drop-in replacement for Diesel engines in heavy-duty applications (transportation and power generation) that affords 5% higher efficiency and 30% power density, while reducing the cost of aftertreatment from ~$20k to ~$2k. Our goal is to improve upon the performance of the Diesel engine, while simultaneously achieving the clean emissions profile of Diesel alternatives for tomorrow's emission standards, all without the relative drawbacks of either strategy.