An experimental and kinetic modeling study of cyclopentane and dimethyl ether blends

Cyclopentane is a suitable naphthene, or cycloalkane, in palette for multi-component gasoline surrogate fuels due to its presence market and relevance alkyl substituted cyclopentanes also present. However, the previous oxidation studies of cyclopentane have primarily focused on neat mixtures. Blending with dimethyl ether this work therefore serves inform our understanding of, improve predictive models for, In work, auto-ignition cyclopentane/dimethyl blends was studied high-pressure shock tube rapid compression machine. A wide range temperatures (650 – 1350 K) elevated pressures 20 40 bar were at equivalence ratios 0.5, 1.0 2.0 air two blending (30/70 70/30 mole% cyclopentane/di-methyl mixtures). detailed kinetic model revised capture measured ignition delay times apparent heat release rates study. Literature time, jet-stirred reactor, laminar burning velocity measurements used as additional validation. Improvements based recent literature related sub-models including cyclopentene cyclopentadiene which allowed removal local rate-constant optimizations. Low temperature reactivity found be controlled by branching ratio between concerted elimination H?2 strained formation Q?OOH radicals agreement studies. study, low increases influence competing consumption pathway cyclopentyl-peroxy (CPT?2J) radicals. The sensitivity simulated cyclopentyl hydroperoxide (CPTO2H), from CPT?2J H?2, discussed. current analyze context binary ethanol toluene.