Ignition delay of diisobutylene-containing multicomponent gasoline surrogates: Shock tube measurements and modeling study

Li, Hua; Qiu, Yue; Wu, Zhiyong; Wang, Sixu; Lü, Xingcai; Huang, Zhen

doi:10.1016/j.fuel.2018.08.132

Cited by 26 publications

(8 citation statements)

References 43 publications

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“…Li et al [ 21 ] also measured the high-temperature ignition delay time of CDTRF fuel in a shock tube, as shown in Figure 10 . A negative correlation between pressure and equivalence ratio and ignition delay is obtained using our model to predict the ignition delay time of CDTRF fuel.…”

Section: Resultsmentioning

confidence: 99%

“…O + OH = O 2 + H) are selected, and the chemical kinetic parameters of the reaction are modified. The kinetic parameters of R14 refer to the research results of Li et al [ 21 ], while R391 is derived from the mechanism of JetSurF2.0 [ 26 ], as shown in Table 2 .…”

Section: Construction Of Chemical Kinetic Modelmentioning

confidence: 99%

“…Cyclohexane (CHX), which is often used as a representative of cycloalkanes to study gasoline-surrogate fuels [ 18 , 21 , 22 ], has the simplest ring structure among cycloalkanes. Early studies on CHX were conducted in different reactors for CHX oxidation experiments [ 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

“…Some researchers have begun to pay attention to the development of the simplified mechanism of multi-component gasoline-alternative fuels containing CHX. The five-component gasoline-alternative fuel chemical kinetic model developed by Li et al [ 21 ] is composed of n-heptane, isooctane, toluene, DIB, and CHX to predict the ignition delay time. Although this model has been used many times to discuss the influence of gasoline components on the combustion and emissions of gasoline direct-injection engines [ 28 , 29 ], large-scale has caused difficulty in flame-speed verification and three-dimensional numerical simulation.…”

Section: Introductionmentioning

confidence: 99%

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Construction of a Chemical Kinetic Model of Five-Component Gasoline Surrogates under Lean Conditions

Yang

Zheng

2022

Molecules

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The requirements for improving the efficiency of internal combustion engines and reducing emissions have promoted the development of new combustion technologies under extreme operating conditions (e.g., lean combustion), and the ignition and combustion characteristics of fuels are increasingly becoming important. A chemical kinetic reduced mechanism consisting of 115 species and 414 elementary reactions is developed for the prediction of ignition and combustion behaviors of gasoline surrogate fuels composed of five components, namely, isooctane, n-heptane, toluene, diisobutylene, and cyclohexane (CHX). The CHX sub-mechanism is obtained by simplifying the JetSurF2.0 mechanism using direct relationship graph error propagating, rate of production analysis, and temperature sensitivity analysis and CHX is mainly consumed through ring-opening reactions, continuous dehydrogenation, and oxygenation reactions. In addition, kinetic parameter corrections were made for key reactions R14 and R391 based on the accuracy of the ignition delay time and laminar flame velocity predictions. Under a wide range of conditions, the mechanism’s ignition delay time, laminar flame speed, and the experimental and calculated results of multi-component gasoline surrogate fuel and real gasoline are compared. The proposed mechanism can accurately reproduce the combustion and oxidation of each component of the gasoline-surrogate fuel mixture and real gasoline.

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Section: Resultsmentioning

confidence: 99%

Section: Construction Of Chemical Kinetic Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Construction of a Chemical Kinetic Model of Five-Component Gasoline Surrogates under Lean Conditions

Yang

Zheng

2022

Molecules

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“…The composition complexity of practical fuel poses difficulty in accurate characterization of their oxidation and combustion kinetics. Researchers as such tried to formulate simplified surrogate fuels that emulate the oxidation and combustion characteristics of real fuels for fundamental combustion study. , Surrogate fuels are generally composed of one or several key representative components from the practical fuels and present similar physiochemical properties with the practical fuels. , The reduced size of components in fuel surrogates significantly decreases the challenges in experimental measurement and chemical kinetic analysis in fundamental combustion research. , …”

Section: Introductionmentioning

confidence: 99%

Autoignition of n-Hexane, Cyclohexane, and Methylcyclohexane in a Constant Volume Combustion Chamber

2019

Self Cite

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The autoignition behaviors of n-hexane, cyclohexane, and methylcyclohexane were experimentally determined and compared in a heated constant volume combustion chamber. The combustion pressures, heat release rates, and ignition and combustion delay times in the autoignition processes of these three fuels were compared in the context of changed chamber temperature, chamber pressure, and injection duration. The experimental results showed that n-hexane had the highest ignition propensity, followed by methylcyclohexane and cyclohexane. Compared to cyclohexane, the existence of methyl group in methylcyclohexane significantly increased the fuel autoignition tendency. Ambient pressure and temperature showed significant effects on fuel ignition timing and heat release histories. Generally, elevated ambient pressure and temperature led to reduced ignition and combustion delays. However, turnover temperatures existed in the ignition and combustion delays of cyclohexane, with ignition and combustion delays extended over these critical temperatures. Changes in fuel injection duration in this study showed a secondary impact on fuel ignition. Increased fuel injection duration slightly extended the ignition delay time at lower chamber temperatures but shortened the combustion delay times and resulted in higher peak heat release rates.

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Optimizing gasoline compression ignition engine performance and emissions: Combined effects of exhaust gas recirculation and fuel octane number

Jiang

Huang

Liu

et al. 2019

Applied Thermal Engineering

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Ignition delay of diisobutylene-containing multicomponent gasoline surrogates: Shock tube measurements and modeling study

Cited by 26 publications

References 43 publications

Construction of a Chemical Kinetic Model of Five-Component Gasoline Surrogates under Lean Conditions

Construction of a Chemical Kinetic Model of Five-Component Gasoline Surrogates under Lean Conditions

Autoignition of n-Hexane, Cyclohexane, and Methylcyclohexane in a Constant Volume Combustion Chamber

Optimizing gasoline compression ignition engine performance and emissions: Combined effects of exhaust gas recirculation and fuel octane number

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