DME-Propane Blends Ignition Experiments and Modeling for Heavy-Duty Mixing Controlled Compression Engines

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

DOI:https://doi.org/10.2514/6.2025-2480· OSTI ID:3022772

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

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1. University of Central Florida

A blend of dimethyl ether (DME) and propane (C3H8) is being studied in a shock tube at heavy-duty engine conditions at 110 bar. Due to its intrinsic combustion properties, DME/propane blend can potentially replace diesel in mixing controlled compression ignition engines. A blend of DME/propane can reduce emissions in mixing controlled compression ignition in heavy-duty engines through modifications, which require simulations using a high-fidelity chemical kinetics model that can accurately predict the chemistry of the blend. An essential aspect of testing the chemical kinetics model is doing baseline fundamental chemistry studies on neat DME and propane, which include ignition delay time measurements. In this work, using a high-pressure shock tube, ignition delay times were gathered for DME/Propane blends at 110 bar diluted with AR to test chemical kinetic models published in the literature. These models include Aramco 3.0, NUIG V1.1, C3mech V3.3, and Dames et al. Comparisons with the experimental IDTs and models were conducted, and general agreement was observed. A sensitivity analysis was conducted, and important reactions were outlined.

• Research Organization: University of Central Florida
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• DOE Contract Number: EE0009879
• OSTI ID: 3022772
• Resource Type: Conference paper
• Conference Information: AIAA SCITECH 2025 Forum (Orlando, FL)
• Country of Publication: United States
• Language: English