Emissions from Heavy-Duty Diesel Engine with EGR using Fuels Derived from Oil Sands and Conventional Crude

Neill, W. Stuart; Chippior, Wallace L.; Cooley, Jean; Doma, Mike; Fairbridge, Craig; Falkiner, Robert; McCormick, Robert L.; Mitchell, Ken

doi:10.4271/2003-01-3144

Cited by 7 publications

(7 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cycloalkanes usually comprise less than 5% of diesel fuel derived from conventional crude-oil sources [1], but are much higher in alternative diesel fuel derived from oil-sands deposits [43]. The cycloalkanes in diesel usually have multiple, alkyl side chains [1].…”

Section: Cycloalkanesmentioning

confidence: 99%

Recent progress in the development of diesel surrogate fuels

Pitz

Mueller

2011

Progress in Energy and Combustion Science

645

371

View full text Add to dashboard Cite

There has been much recent progress in the area of surrogate fuels for diesel. In the last few years, experiments and modeling have been performed on higher molecular weight components of relevance to diesel fuel such as n-hexadecane (n-cetane) and 2,2,4,4,6,8,8-heptamethylnonane (iso-cetane). Chemical kinetic models have been developed for all the n-alkanes up to 16 carbon atoms. Also, there has been much experimental and modeling work on lower molecular weight surrogate components such as n-decane and n-dodecane that are most relevant to jet fuel surrogates, but are also relevant to diesel surrogates where simulation of the full boiling point range is desired. For two-ring compounds, experimental work on decalin and tetralin recently has been published. For multi-component surrogate fuel mixtures, recent work on modeling of these mixtures and comparisons to real diesel fuel is reviewed. Detailed chemical kinetic models for surrogate fuels are very large in size. Significant progress also has been made in improving the mechanism reduction tools that are needed to make these large models practicable in multidimensional reacting flow simulations of diesel combustion. Nevertheless, major research gaps remain. In the case of iso-alkanes, there are experiments and modeling work on only one of relevance to diesel: iso-cetane. Also, the iso-alkanes in diesel are lightly branched and no detailed chemical kinetic models or experimental investigations are available for such compounds. More components are needed to fill out the iso-alkane boiling point range. For the aromatic class of compounds, there has been no new work for compounds in the boiling point range of diesel. Most of the new work has been on alkyl aromatics that are of the range C7 to C8, below the C10 to C20 range that is needed. For the chemical class of cycloalkanes, experiments and modeling on higher molecular weight components are warranted. Finally for multi-component surrogates needed to treat real diesel, the inclusion of higher molecular weight components is needed in models and experimental investigations.

show abstract

Section: Cycloalkanesmentioning

confidence: 99%

Recent progress in the development of diesel surrogate fuels

Pitz

Mueller

2011

Progress in Energy and Combustion Science

645

371

View full text Add to dashboard Cite

show abstract

“…They have important properties for gas turbine applications where bicyclic cycloalkanes absorb significant quantities of heat to cool aircraft 1 . For oil sand‐derived fuels, they are in much higher concentrations than present in conventionally derived fossil fuels 2 . The combustion properties of cycloalkanes are unique.…”

Section: Introductionmentioning

confidence: 99%

“…1 For oil sand-derived fuels, they are in much higher concentrations than present in conventionally derived fossil fuels. 2 The combustion properties of cycloalkanes are unique. Their low-temperature behavior falls between that of n-alkanes and olefins.…”

Section: Introductionmentioning

confidence: 99%

A detailed chemical kinetic modeling and experimental investigation of the low‐ and high‐temperature chemistry of n‐butylcyclohexane

Pitz

Liang

Kukkadapu

et al. 2020

Int J of Chemical Kinetics

View full text Add to dashboard Cite

Chemical kinetic models of gasoline, jet, and diesel fuels and their mixtures with bioderived fuels are needed to assess fuel property effects on efficiency, emissions, and other performance metrics in internal combustion and gas turbine engines. As these real fuels have too many fuel components to be included in a chemical kinetic model, surrogate fuels containing fewer components are used to represent them. These surrogate fuels mimic the chemical classes or molecular structures contained in the real fuel. One of the important chemical classes in gasoline, jet, and diesel fuels comprises cyclohexanes. Cyclohexanes comprise about 30% or more by weight in diesel fuel. Also, Mueller et al (Energy Fuels. 2012;26(6):3284‐3303) proposed n‐butylcyclohexane (nBCH) as a component in a nine‐component surrogate palette to represent the ignition properties, distillation curve, density, and molecular structures of a diesel certification fuel. In this work, experimental measurements of the ignition delay times (IDTs) of nBCH in a shock tube and in a rapid compression machine are reported over a wide range of temperature, pressure, and equivalence ratio important for enabling the validation of a chemical kinetic model for nBCH for combustion in diesel engines. The range of conditions are temperatures of 630–1420 K, pressures of 10, 30, and 50 bar, and equivalence ratios of 0.3, 0.5, 1.0, and 2.0 in ‘air’. A detailed chemical model is developed for nBCH to simulate its ignition at both low and high‐temperature conditions and at relevant elevated pressures. The experimentally measured IDTs are used to improve and validate the chemical kinetic model.

show abstract

“…4 and 5. In particular, strong competition between R3 (step (2) in Scheme 1) and R6 (step (8) in Scheme 1) can be observed from the ROP analysis and the sensitivity analysis. Same as R5, R6 is also a chain inhibition reaction.…”

Section: Low-temperature Chain Branching Process and Ntc Behaviormentioning

confidence: 99%

“…Naphthenes (cycloalkanes and alkylcycloalkanes) are an important component family in petroleum-derived transportation fuels. Their total volume fraction can reach up to 35% in diesel oils, 20% in jet fuels, and 10% in gasoline [6,7], while the value can be 50%−70% in diesel oils derived from oil-sands [8].…”

Section: Introductionmentioning

confidence: 99%

Exploring the low-temperature oxidation chemistry of cyclohexane in a jet-stirred reactor: An experimental and kinetic modeling study

Zou

et al. 2018

Chinese Journal of Chemical Physics

View full text Add to dashboard Cite

We report the investigation on the low-temperature oxidation of cyclohexane in a jet-stirred reactor over 500−742 K. Synchrotron vacuum ultraviolet photoionization mass spectrometry (SVUV-PIMS) was used for identifying and quantifying the oxidation species. Major products, cyclic olefins, and oxygenated products including reactive hydroperoxides and high oxygen compounds were detected. Compared with n-alkanes, a narrow low-temperature window (∼80 K) was observed in the low-temperature oxidation of cyclohexane. Besides, a kinetic model for cyclohexane oxidation was developed based on the CNRS model [Combust. Flame 160, 2319 (2013)], which can better capture the experimental results than previous models. Based on the modeling analysis, the 1,5-H shift dominates the crucial isomerization steps of the first and second O 2 addition products in the low-temperature chain branching process of cyclohexane. The negative temperature coefficient behavior of cyclohexane oxidation results from the reduced chain branching due to the competition from chain inhibition and propagation reactions, i.e. the reaction between cyclohexyl radical and O 2 and the decomposition of cyclohexylperoxy radical, both producing cyclohexene and HO 2 radical, as well as the decomposition of cyclohexylhydroperoxy radical producing hex-5-en-1-al and OH radical.

show abstract

Emissions from Heavy-Duty Diesel Engine with EGR using Fuels Derived from Oil Sands and Conventional Crude

Cited by 7 publications

References 6 publications

Recent progress in the development of diesel surrogate fuels

Recent progress in the development of diesel surrogate fuels

A detailed chemical kinetic modeling and experimental investigation of the low‐ and high‐temperature chemistry of n‐butylcyclohexane

Exploring the low-temperature oxidation chemistry of cyclohexane in a jet-stirred reactor: An experimental and kinetic modeling study

Contact Info

Product

Resources

About