John E. Dec
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View article: Practical low-temperature gasoline combustion for very high efficiency off-road, medium- and heavy-duty engines
Practical low-temperature gasoline combustion for very high efficiency off-road, medium- and heavy-duty engines Open
Low-temperature gasoline combustion (LTGC) with additive-mixing fuel injection (AMFI) is a new combustion strategy that has been demonstrated to deliver 9%–25% better brake thermal efficiency than similar-sized market-leading diesel engine…
View article: Fuel and fuel blend for internal combustion engine
Fuel and fuel blend for internal combustion engine Open
A fuel or fuel blending agent for an internal combustion engine includes a ketone compound that is a C4 to C10 branched acyclic ketone, cyclopentanone, or a derivative of cyclopentanone. The ketone compound may be blended with a majority p…
View article: Development and evaluation of a skeletal mechanism for EHN additized gasoline mixtures in large Eddy simulations of HCCI combustion
Development and evaluation of a skeletal mechanism for EHN additized gasoline mixtures in large Eddy simulations of HCCI combustion Open
Advanced Low Temperature Combustion modes, such as the Sandia proposed Additive-Mixing Fuel Injection (AMFI), can unlock significant potential to boost fuel conversion efficiency and ultimately improve the energy conversion of internal com…
View article: Additive-Mixing Fuel Injection (AMFI): A device for robust control and improved performance of high-efficiency LTGC engines
Additive-Mixing Fuel Injection (AMFI): A device for robust control and improved performance of high-efficiency LTGC engines Open
Low-temperature gasoline combustion (LTGC) engines can provide high efficiencies with very low NOx and particulate emissions. Despite these major advantages, methods for controlling LTGC combustion timing, achieving robust autoignition, an…
View article: Method for operating homogeneous charge compression ignition engines using conventional gasoline
Method for operating homogeneous charge compression ignition engines using conventional gasoline Open
A method for the operation of homogeneous charge compression ignition engines (HCCI) using gasoline or similar single-stage ignition fuels. Partial fuel stratification (PFS), intake pressure boosting and controlled BDC-intake temperatures,…
View article: Additive-mixing fuel-injection system for internal combustion engines
Additive-mixing fuel-injection system for internal combustion engines Open
A system and method for fast control of the timing of combustion in an internal combustion engine, comprising actuating a fast-acting fuel-additive supply valve to meter a variable amount of fuel additive into a fuel stream, thereby formin…
View article: Replicating HCCI-like autoignition behavior: What gasoline surrogate fidelity is needed?
Replicating HCCI-like autoignition behavior: What gasoline surrogate fidelity is needed? Open
This work seeks to characterize the fidelity needed in a gasoline surrogate with the intent to replicate the complex autoignition behavior exhibited within advanced combustion engines, and specifically Homogeneous Charge Compression Igniti…
View article: Development and Validation of an EHN Mechanism for Fundamental and Applied Chemistry Studies
Development and Validation of an EHN Mechanism for Fundamental and Applied Chemistry Studies Open
Autoignition enhancing additives have been used for years to enhance the ignition quality of diesel fuel, with 2-ethylhexyl nitrate (EHN) being the most common additive. EHN also enhances the autoignition reactivity of gasoline, which has …
View article: Advanced Engine and Fuel Technologies Annual Progress Report (FY2019)
Advanced Engine and Fuel Technologies Annual Progress Report (FY2019) Open
On behalf of the Vehicle Technologies Office of the U.S. Department of Energy, we are pleased to introduce the Fiscal Year (FY) 2019 Annual Progress Report for the Advanced Engine and Fuel Technologies Program. In support of the Vehicle Te…
View article: APPENDIX_A – Supplemental material for Understanding partial fuel stratification for low temperature gasoline combustion using large eddy simulations
APPENDIX_A – Supplemental material for Understanding partial fuel stratification for low temperature gasoline combustion using large eddy simulations Open
Supplemental material, APPENDIX_A for Understanding partial fuel stratification for low temperature gasoline combustion using large eddy simulations by Priya Priyadarshini, Aimilios Sofianopoulos, Sotirios Mamalis, Benjamin Lawler, Dario L…
View article: A Study of Calibration Transportation Fuels from the Perspective of Spherical Droplet Flames
A Study of Calibration Transportation Fuels from the Perspective of Spherical Droplet Flames Open
1. Well-designed surrogates can emulate burning behavior of complex fuels with fewer components.\n2. S3 closely mimics the droplet burning behavior of RD5-87 even though no droplet burning targets were used.\n3. Experimental results demons…
View article: Combustion-Timing Control of Low-Temperature Gasoline Combustion (LTGC) Engines by Using Double Direct-Injections to Control Kinetic Rates
Combustion-Timing Control of Low-Temperature Gasoline Combustion (LTGC) Engines by Using Double Direct-Injections to Control Kinetic Rates Open
Low-temperature gasoline combustion (LTGC) engines can provide high efficiencies and extremely low NOx and particulate emissions, but controlling the combustion timing remains a challenge. This paper explores the potential of Partial Fuel …
View article: Co-Optimization of Fuels & Engines: Properties of Co-Optima Core Research Gasolines
Co-Optimization of Fuels & Engines: Properties of Co-Optima Core Research Gasolines Open
The Co-Optima Core gasolines are a set of fuels developed to have similar autoignition properties but a wide range of composition. The primary compositional components varied were isoparaffins, cycloparaffins, olefins, aromatics, and ethan…
View article: Refining Measurement Uncertainties in HCCI/LTGC Engine Experiments
Refining Measurement Uncertainties in HCCI/LTGC Engine Experiments Open
This study presents estimates for measurement uncertainties for a Homogenous Charge Compression Ignition (HCCI)/Low-Temperature Gasoline Combustion (LTGC) engine testing facility. A previously presented framework for quantifying those unce…
View article: Spark Assist for CA50 Control and Improved Robustness in a Premixed LTGC Engine – Effects of Equivalence Ratio and Intake Boost
Spark Assist for CA50 Control and Improved Robustness in a Premixed LTGC Engine – Effects of Equivalence Ratio and Intake Boost Open
Low-temperature gasoline combustion (LTGC) engines can deliver high efficiencies, with ultra-low emissions of nitrogen oxides (NOx) and particulate matter (PM). However, controlling the combustion timing and maintaining robust operation re…
View article: Boosted Premixed-LTGC / HCCI Combustion of EHN-doped Gasoline for Engine Speeds Up to 2400 rpm
Boosted Premixed-LTGC / HCCI Combustion of EHN-doped Gasoline for Engine Speeds Up to 2400 rpm Open
Previous work has shown that conventional diesel ignition improvers, 2-ethylhexyl nitrate (EHN) and di-tert-butyl peroxide (DTBP), can be used to enhance the autoignition of a regular-grade E10 gasoline in a well premixed low-temperature g…