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Prediction of the Viable Operating Range of DME Heel Engine Using Thermal Stratification Based on Numerical Analysis  

Jeong, Dong-Won (School of Mechanical & Automotive Engineering, Ulsan Univ.)
Kwon, O-Seok (School of Mechanical & Automotive Engineering, Ulsan Univ.)
Back, Young-Soon (KOGAS)
Lim, Ock-Taeck (School of Mechanical & Automotive Engineering, Ulsan Univ.)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.20, no.4, 2009 , pp. 344-351 More about this Journal
Abstract
A multi-zone model was used to predict the operating range of homogeneous charge compression ignition (HCCI) engine, the boundaries of the operating range were determined by knock (presented by ring intensity), misfire (presented by sensitivity of indicated mean effective pressure to the initial temperature). A HCCI engine fueled with Di-Methyl Ether (DME) was simulated under different initial temperature and equivalence ratios, and the operating range was well produced by the model. Furthermore, the model was applied to develop the operating range for thermal stratification in the preceding condition of initial temperature and equivalence ratios. The computations were conducted using Senkin application of the CHEMKINII kinetics rate code.
Keywords
HCCI; Rate of pressure rise; Thermal stratification; DME; Multi-zone model; Single-zone model; Knocking; Ringing intensity;
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