The Digest’s 2025 Multi-Slide Guide to Medium Duty Off-Road DME Engine Achieving High Efficiency and Ultra Low Emissions

This project develops durable fuel injection systems (FIS) and Ducted Fuel Injection (DFI) for rDME Mixing Controlled Compression Ignition (MCCI) combustion in off-road engines. A core technology advance is utilizing dual FIS development pathways to mitigate risk for a planned 200-hour durability demonstration. The technology leverages rDME’s low carbon intensity (as low as -279 gCO2e/MJ), enabling deep GHG reduction and greatly simplified after-treatment, potentially eliminating the Diesel Particulate Filter.