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Christopher Ulishney
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Journal Articles

Numerical Investigation of a Heavy-Duty CI Engine Converted to Ammonia SI Operation

Accepted Manuscript
Jinlong Liu, Christopher Ulishney, Cosmin E. Dumitrescu
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power.
Paper No: GTP-23-1094
DOI: https://doi.org/10.1115/1.4062418
Published Online: April 26, 2023
View Article titled, Numerical Investigation of a Heavy-Duty CI Engine Converted to Ammonia SI Operation
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Topics: Diesel engines, Combustion, Emissions, Engines, Flames, Fuels, Nitrogen oxides, Ignition, Nitrogen, Oxidation
Proceedings Papers

Numerical Investigation of a Heavy Duty Compression Ignition Engine Converted to Ammonia Spark Ignition Operation

Jinlong Liu, Christopher Ulishney, Cosmin E. Dumitrescu
Proc. ASME. ICEF2022, ASME 2022 ICE Forward Conference, V001T02A001, October 16–19, 2022
Paper No: ICEF2022-88071
DOI: https://doi.org/10.1115/ICEF2022-88071
View Paper titled, Numerical Investigation of a Heavy Duty Compression Ignition Engine Converted to Ammonia Spark Ignition Operation
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Topics: Diesel engines, Ignition, Combustion, Fuels, Emissions, Energy generation, Engines, Flames, Nitrogen oxides, Hydrogen
Journal Articles

Comparison of Random Forest and Neural Network in Modeling the Performance and Emissions of a Natural Gas Spark Ignition Engine

Jinlong Liu, Qiao Huang, Christopher Ulishney, Cosmin E. Dumitrescu
Journal: Journal of Energy Resources Technology
Article Type: Research Papers
J. Energy Resour. Technol. March 2022, 144(3): 032310.
Paper No: JERT-21-1797
DOI: https://doi.org/10.1115/1.4053301
Published Online: January 7, 2022
View Article titled, Comparison of Random Forest and Neural Network in Modeling the Performance and Emissions of a Natural Gas Spark Ignition Engine
Click here to open pdf in another window PDF for Comparison of Random Forest and Neural Network in Modeling the Performance and Emissions of a Natural Gas Spark Ignition Engine
Topics: Artificial neural networks, Emissions, Engines, Errors, Machine learning, Natural gas, Algorithms, Combustion, Modeling, Cylinders
Proceedings Papers

Optical and Numerical Investigations of Flame Propagation in a Heavy Duty Spark Ignited Natural Gas Engine

Jinlong Liu, Christopher Ulishney, Cosmin E. Dumitrescu
Proc. ASME. ICEF2021, ASME 2021 Internal Combustion Engine Division Fall Technical Conference, V001T01A003, October 13–15, 2021
Paper No: ICEF2021-67489
DOI: https://doi.org/10.1115/ICEF2021-67489
View Paper titled, Optical and Numerical Investigations of Flame Propagation in a Heavy Duty Spark Ignited Natural Gas Engine
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Topics: Flames, Gas engines, Combustion, Engines, Emissions, Methane, Fuels, Ignition, Natural gas, Pistons
Proceedings Papers

Predicting the Combustion Phasing of a Natural Gas Spark Ignition Engine Using the K-Nearest Neighbors Algorithm

Jinlong Liu, Christopher Ulishney, Cosmin E. Dumitrescu
Proc. ASME. IMECE2020, Volume 8: Energy, V008T08A012, November 16–19, 2020
Paper No: IMECE2020-23982
DOI: https://doi.org/10.1115/IMECE2020-23982
View Paper titled, Predicting the Combustion Phasing of a Natural Gas Spark Ignition Engine Using the K-Nearest Neighbors Algorithm
Click here to open pdf in another window PDF for Predicting the Combustion Phasing of a Natural Gas Spark Ignition Engine Using the K-Nearest Neighbors Algorithm
Topics: Algorithms, Combustion, Natural gas, Spark-ignition engine, Engines, Errors, Pressure, Cylinders, Fuels, Ignition
Proceedings Papers

Prediction of Efficient Operating Conditions Inside a Heavy-Duty Natural Gas Spark Ignition Engine Using Artificial Neural Networks

Jinlong Liu, Christopher Ulishney, Cosmin E. Dumitrescu
Proc. ASME. IMECE2020, Volume 8: Energy, V008T08A013, November 16–19, 2020
Paper No: IMECE2020-23987
DOI: https://doi.org/10.1115/IMECE2020-23987
View Paper titled, Prediction of Efficient Operating Conditions Inside a Heavy-Duty Natural Gas Spark Ignition Engine Using Artificial Neural Networks
Click here to open pdf in another window PDF for Prediction of Efficient Operating Conditions Inside a Heavy-Duty Natural Gas Spark Ignition Engine Using Artificial Neural Networks
Topics: Artificial neural networks, Natural gas, Spark-ignition engine, Engines, Pressure, Cylinders, Combustion, Design, Optimization, Safety
Proceedings Papers

Lessons From the Conversion of a Heavy-Duty Compression Ignition Engine to Natural Gas Spark Ignition Operation

Jinlong Liu, Christopher Ulishney, Cosmin E. Dumitrescu
Proc. ASME. IMECE2020, Volume 8: Energy, V008T08A014, November 16–19, 2020
Paper No: IMECE2020-23991
DOI: https://doi.org/10.1115/IMECE2020-23991
View Paper titled, Lessons From the Conversion of a Heavy-Duty Compression Ignition Engine to Natural Gas Spark Ignition Operation
Click here to open pdf in another window PDF for Lessons From the Conversion of a Heavy-Duty Compression Ignition Engine to Natural Gas Spark Ignition Operation
Topics: Diesel engines, Ignition, Natural gas, Engines, Combustion, Emissions, Fuels, Carbon monoxide, Compression, Diesel
Proceedings Papers

Application of Random Forest Machine Learning Models to Forecast Combustion Profile Parameters of a Natural Gas Spark Ignition Engine

Jinlong Liu, Christopher Ulishney, Cosmin E. Dumitrescu
Proc. ASME. IMECE2020, Volume 6: Design, Systems, and Complexity, V006T06A003, November 16–19, 2020
Paper No: IMECE2020-23973
DOI: https://doi.org/10.1115/IMECE2020-23973
View Paper titled, Application of Random Forest Machine Learning Models to Forecast Combustion Profile Parameters of a Natural Gas Spark Ignition Engine
Click here to open pdf in another window PDF for Application of Random Forest Machine Learning Models to Forecast Combustion Profile Parameters of a Natural Gas Spark Ignition Engine
Topics: Combustion, Machine learning, Natural gas, Spark-ignition engine, Engines, Algorithms, Cylinders, Dynamometers, Engineering simulation, Errors
Proceedings Papers

Engine Performance and Emissions for a Heavy-Duty Diesel Engine Converted to Stoichiometric Natural Gas Operation

Jinlong Liu, Christopher Ulishney, Cosmin E. Dumitrescu
Proc. ASME. ICEF2020, ASME 2020 Internal Combustion Engine Division Fall Technical Conference, V001T03A008, November 4–6, 2020
Paper No: ICEF2020-2964
DOI: https://doi.org/10.1115/ICEF2020-2964
View Paper titled, Engine Performance and Emissions for a Heavy-Duty Diesel Engine Converted to Stoichiometric Natural Gas Operation
Click here to open pdf in another window PDF for Engine Performance and Emissions for a Heavy-Duty Diesel Engine Converted to Stoichiometric Natural Gas Operation
Topics: Diesel engines, Emissions, Engines, Natural gas, Combustion, Ignition, Diesel, Air pollution control, Carbon monoxide, Catalytic converters
Proceedings Papers

Improving Machine Learning Model Performance in Predicting the Indicated Mean Effective Pressure of a Natural Gas Engine

Jinlong Liu, Christopher Ulishney, Cosmin E. Dumitrescu
Proc. ASME. ICEF2020, ASME 2020 Internal Combustion Engine Division Fall Technical Conference, V001T03A009, November 4–6, 2020
Paper No: ICEF2020-2968
DOI: https://doi.org/10.1115/ICEF2020-2968
View Paper titled, Improving Machine Learning Model Performance in Predicting the Indicated Mean Effective Pressure of a Natural Gas Engine
Click here to open pdf in another window PDF for Improving Machine Learning Model Performance in Predicting the Indicated Mean Effective Pressure of a Natural Gas Engine
Topics: Gas engines, Machine learning, Pressure, Engines, Algorithms, Boundary-value problems, Combustion, Cylinders, Diesel, Diesel engines
Journal Articles

Random Forest Machine Learning Model for Predicting Combustion Feedback Information of a Natural Gas Spark Ignition Engine

Jinlong Liu, Christopher Ulishney, Cosmin Emil Dumitrescu
Journal: Journal of Energy Resources Technology
Article Type: Research Papers
J. Energy Resour. Technol. January 2021, 143(1): 012301.
Paper No: JERT-20-1331
DOI: https://doi.org/10.1115/1.4047761
Published Online: July 22, 2020
View Article titled, Random Forest Machine Learning Model for Predicting Combustion Feedback Information of a Natural Gas Spark Ignition Engine
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Topics: Combustion, Engines, Feedback, Fuels, Machine learning, Natural gas, Pressure, Spark-ignition engine
Proceedings Papers

Development of the Control and Acquisition System for a Natural-Gas Spark-Ignition Engine Test Bench

Lorenzo Gasbarro, Jinlong Liu, Christopher Ulishney, Cosmin E. Dumitrescu, Luca Ambrogi, Michele Battistoni
Proc. ASME. IMECE2019, Volume 6: Energy, V006T06A074, November 11–14, 2019
Paper No: IMECE2019-11485
DOI: https://doi.org/10.1115/IMECE2019-11485
View Paper titled, Development of the Control and Acquisition System for a Natural-Gas Spark-Ignition Engine Test Bench
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Topics: Natural gas, Spark-ignition engine, Engines, Computational fluid dynamics, Control equipment, Data acquisition systems, Design, Dynamometers, Emissions, Internal combustion engines
Proceedings Papers

Conversion of a Heavy-Duty Diesel Engine to Natural-Gas Spark-Ignition Operation: Test Bench Development

Jinlong Liu, Cosmin E. Dumitrescu, Hemanth Bommisetty, Christopher Ulishney
Proc. ASME. IMECE2019, Volume 6: Energy, V006T06A013, November 11–14, 2019
Paper No: IMECE2019-10728
DOI: https://doi.org/10.1115/IMECE2019-10728
View Paper titled, Conversion of a Heavy-Duty Diesel Engine to Natural-Gas Spark-Ignition Operation: Test Bench Development
Click here to open pdf in another window PDF for Conversion of a Heavy-Duty Diesel Engine to Natural-Gas Spark-Ignition Operation: Test Bench Development
Topics: Diesel engines, Ignition, Natural gas, Engines, Pressure, Compression, Cylinders, Emissions, Data acquisition systems, Design
Proceedings Papers

Twin-Peak Heat Release Phenomenon Inside a Heavy-Duty Diesel Engine Retrofitted to Natural-Gas Spark Ignition

Jinlong Liu, Cosmin E. Dumitrescu, Christopher Ulishney
Proc. ASME. ICEF2019, ASME 2019 Internal Combustion Engine Division Fall Technical Conference, V001T02A009, October 20–23, 2019
Paper No: ICEF2019-7182
DOI: https://doi.org/10.1115/ICEF2019-7182
View Paper titled, Twin-Peak Heat Release Phenomenon Inside a Heavy-Duty Diesel Engine Retrofitted to Natural-Gas Spark Ignition
Click here to open pdf in another window PDF for Twin-Peak Heat Release Phenomenon Inside a Heavy-Duty Diesel Engine Retrofitted to Natural-Gas Spark Ignition
Topics: Diesel engines, Heat, Ignition, Natural gas, Combustion, Cycles, Flames, Compression, Computational fluid dynamics, Diesel