Autoignition Delay Time Measurements of Dimethyl Ether at 110 Bar Inside a Shock Tube

Conference · Fri Jan 03 00:00:00 EST 2025

DOI:https://doi.org/10.2514/6.2025-0386· OSTI ID:3022769

Guenther, Aaron C. ^[1]; Mohammed, Zuhayr Pasha ^[1]; Pierro, Michael ^[1]; Urso, Justin ^[1]; Khaleel Rahman, Ramees ^[1]; Vasu, Subith ^[1]

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1. University of Central Florida

Fuel mixtures of propane and dimethyl ether have been proposed as potential diesel substitutes for use in compression-ignition engines. There is an interest in phasing out diesel fuel because its combustion byproducts are harmful to the environment. Propane and dimethyl ether burn cleaner and produce significantly less carbon dioxide than diesel. The combustion of these fuels at engine-relevant conditions must be characterized to create an engine capable of running on propane and dimethyl ether. In this work, IDT measurements of stoichiometric neat DME diluted in 75% argon were completed for temperatures spanning 800-1200K at 110 bar. A shock tube will be used for all experiments in this work. Experimental IDTs were then compared to simulated values using several well-established mechanisms in the literature.

• Research Organization: University of Central Florida
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• DOE Contract Number: EE0009879
• OSTI ID: 3022769
• Resource Type: Conference paper
• Conference Information: AIAA SCITECH 2025 Forum (Orlando, FL)
• Country of Publication: United States
• Language: English