1-20 of 25
Thomas Wallner
Close
Save search
Follow your search
Access your saved searches in your account
Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Numerical Investigation of the Impact of Spray – Bowl Interaction on Thermal Efficiency of a Gasoline Compression Ignition Engine

Srinivasa Krishna Addepalli, Michael Pamminger, Riccardo Scarcelli, Thomas Wallner
Proc. ASME. ICEF2021, ASME 2021 Internal Combustion Engine Division Fall Technical Conference, V001T01A004, October 13–15, 2021
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2021-67851
https://doi.org/10.1115/ICEF2021-67851
View Paper titled, Numerical Investigation of the Impact of Spray – Bowl Interaction on Thermal Efficiency of a Gasoline Compression Ignition Engine
Open the PDF for Numerical Investigation of the Impact of Spray – Bowl Interaction on Thermal Efficiency of a Gasoline Compression Ignition Engine in another window
Topics: Compression, Computational fluid dynamics, Diesel engines, Fuels, Gasoline, Ignition, Sprays, Thermal efficiency
Journal Articles

Knock Intensity Distribution and a Stochastic Control Framework for Knock Control

Mateos Kassa, Carrie Hall, Michael Pamminger, Thomas Wallner
Journal: Journal of Dynamic Systems, Measurement, and Control
Publisher: ASME
Article Type: Research-Article
J. Dyn. Sys., Meas., Control. November 2019, 141(11): 111008.
Paper No: DS-17-1596
https://doi.org/10.1115/1.4044437
Published Online: September 18, 2019
View Article titled, Knock Intensity Distribution and a Stochastic Control Framework for Knock Control
Open the PDF for Knock Intensity Distribution and a Stochastic Control Framework for Knock Control in another window
Topics: Cycles, Cylinders, Engines, Fittings, Fuels, Log normal distribution, Pressure, Fuel efficiency, Combustion
Journal Articles

Development of a Hybrid Lagrangian–Eulerian Model to Describe Spark-Ignition Processes at Engine-Like Turbulent Flow Conditions

Riccardo Scarcelli, Anqi Zhang, Thomas Wallner, Sibendu Som, Jing Huang, Sameera Wijeyakulasuriya, Yijin Mao, Xiucheng Zhu, Seong-Young Lee
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. September 2019, 141(9): 091009.
Paper No: GTP-19-1137
https://doi.org/10.1115/1.4043397
Published Online: June 5, 2019
View Article titled, Development of a Hybrid Lagrangian–Eulerian Model to Describe Spark-Ignition Processes at Engine-Like Turbulent Flow Conditions
Open the PDF for Development of a Hybrid Lagrangian–Eulerian Model to Describe Spark-Ignition Processes at Engine-Like Turbulent Flow Conditions in another window
Topics: Engines, Ignition, Flow (Dynamics), Simulation, Combustion, Flames, Computational fluid dynamics, Turbulence, Electrodes
Proceedings Papers

Effects of Port Fuel and Direct Injection Strategies and Intake Conditions on Gasoline Compression Ignition Operation

Buyu Wang, Michael Pamminger, Thomas Wallner
Proc. ASME. ICEF2018, Volume 1: Large Bore Engines; Fuels; Advanced Combustion, V001T03A026, November 4–7, 2018
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2018-9723
https://doi.org/10.1115/ICEF2018-9723
View Paper titled, Effects of Port Fuel and Direct Injection Strategies and Intake Conditions on Gasoline Compression Ignition Operation
Open the PDF for Effects of Port Fuel and Direct Injection Strategies and Intake Conditions on Gasoline Compression Ignition Operation in another window
Topics: Compression, Fuels, Gasoline, Ignition, Combustion, Engines, Emissions, Exhaust gas recirculation, Pressure, Heat transfer
Proceedings Papers

Development of a Hybrid Lagrangian-Eulerian Model to Describe Spark-Ignition Processes at Engine-Like Turbulent Flow Conditions

Riccardo Scarcelli, Anqi Zhang, Thomas Wallner, Sibendu Som, Jing Huang, Sameera Wijeyakulasuriya, Yijin Mao, Xiucheng Zhu, Seong-Young Lee
Proc. ASME. ICEF2018, Volume 2: Emissions Control Systems; Instrumentation, Controls, and Hybrids; Numerical Simulation; Engine Design and Mechanical Development, V002T06A018, November 4–7, 2018
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2018-9690
https://doi.org/10.1115/ICEF2018-9690
View Paper titled, Development of a Hybrid Lagrangian-Eulerian Model to Describe Spark-Ignition Processes at Engine-Like Turbulent Flow Conditions
Open the PDF for Development of a Hybrid Lagrangian-Eulerian Model to Describe Spark-Ignition Processes at Engine-Like Turbulent Flow Conditions in another window
Topics: Engines, Ignition, Turbulence, Combustion, Computational fluid dynamics, Electrodes, Elongation, Flames, Physics, Simulation
Journal Articles

Influence of Charge Motion and Compression Ratio on the Performance of a Combustion Concept Employing In-Cylinder Gasoline and Natural Gas Blending

James Sevik, Michael Pamminger, Thomas Wallner, Riccardo Scarcelli, Steven Wooldridge, Brad Boyer, Scott Miers, Carrie Hall
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2018, 140(12): 121501.
Paper No: GTP-18-1049
https://doi.org/10.1115/1.4040090
Published Online: August 6, 2018
View Article titled, Influence of Charge Motion and Compression Ratio on the Performance of a Combustion Concept Employing In-Cylinder Gasoline and Natural Gas Blending
Open the PDF for Influence of Charge Motion and Compression Ratio on the Performance of a Combustion Concept Employing In-Cylinder Gasoline and Natural Gas Blending in another window
Topics: Combustion, Cylinders, Engines, Exhaust gas recirculation, Fuels, Compression, Gasoline, Plates (structures), Natural gas, Stress
Proceedings Papers

Influence of Charge Motion and Compression Ratio on the Performance of a Combustion Concept Employing In-Cylinder Gasoline and Natural Gas Blending

James Sevik, Michael Pamminger, Thomas Wallner, Riccardo Scarcelli, Steven Wooldridge, Brad Boyer, Scott Miers, Carrie Hall
Proc. ASME. ICEF2017, Volume 1: Large Bore Engines; Fuels; Advanced Combustion, V001T03A018, October 15–18, 2017
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2017-3661
https://doi.org/10.1115/ICEF2017-3661
View Paper titled, Influence of Charge Motion and Compression Ratio on the Performance of a Combustion Concept Employing In-Cylinder Gasoline and Natural Gas Blending
Open the PDF for Influence of Charge Motion and Compression Ratio on the Performance of a Combustion Concept Employing In-Cylinder Gasoline and Natural Gas Blending in another window
Topics: Combustion, Compression, Cylinders, Gasoline, Natural gas, Engines, Exhaust gas recirculation, Stress, Emissions, Fuels
Proceedings Papers

Performance, Efficiency and Emissions Evaluation of Gasoline Port-Fuel Injection, Natural Gas Direct Injection and Blended Operation

Michael Pamminger, Thomas Wallner, James Sevik, Riccardo Scarcelli, Carrie Hall, Steven Wooldridge, Brad Boyer
Proc. ASME. ICEF2016, ASME 2016 Internal Combustion Engine Division Fall Technical Conference, V001T03A008, October 9–12, 2016
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2016-9370
https://doi.org/10.1115/ICEF2016-9370
View Paper titled, Performance, Efficiency and Emissions Evaluation of Gasoline Port-Fuel Injection, Natural Gas Direct Injection and Blended Operation
Open the PDF for Performance, Efficiency and Emissions Evaluation of Gasoline Port-Fuel Injection, Natural Gas Direct Injection and Blended Operation in another window
Topics: Emissions, Fuels, Gasoline, Natural gas, Cylinders, Engines, Stress, Combustion, Internal combustion engines, Valves
Journal Articles

Extending Lean and Exhaust Gas Recirculation-Dilute Operating Limits of a Modern Gasoline Direct-Injection Engine Using a Low-Energy Transient Plasma Ignition System

James Sevik, Thomas Wallner, Michael Pamminger, Riccardo Scarcelli, Dan Singleton, Jason Sanders
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2016, 138(11): 112807.
Paper No: GTP-16-1055
https://doi.org/10.1115/1.4033470
Published Online: May 24, 2016
View Article titled, Extending Lean and Exhaust Gas Recirculation-Dilute Operating Limits of a Modern Gasoline Direct-Injection Engine Using a Low-Energy Transient Plasma Ignition System
Open the PDF for Extending Lean and Exhaust Gas Recirculation-Dilute Operating Limits of a Modern Gasoline Direct-Injection Engine Using a Low-Energy Transient Plasma Ignition System in another window
Topics: Combustion, Engines, Exhaust gas recirculation, Ignition systems, Plasmas (Ionized gases), Transients (Dynamics), Ignition, Flames, Cylinders, Gasoline
Journal Articles

Capturing Cyclic Variability in Exhaust Gas Recirculation Dilute Spark-Ignition Combustion Using Multicycle RANS

Riccardo Scarcelli, James Sevik, Thomas Wallner, Keith Richards, Eric Pomraning, Peter K. Senecal
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2016, 138(11): 112803.
Paper No: GTP-16-1079
https://doi.org/10.1115/1.4033184
Published Online: May 17, 2016
View Article titled, Capturing Cyclic Variability in Exhaust Gas Recirculation Dilute Spark-Ignition Combustion Using Multicycle RANS
Open the PDF for Capturing Cyclic Variability in Exhaust Gas Recirculation Dilute Spark-Ignition Combustion Using Multicycle RANS in another window
Topics: Combustion, Computational fluid dynamics, Cycles, Engines, Exhaust gas recirculation, Ignition, Pressure, Reynolds-averaged Navier–Stokes equations, Simulation, Stability
Journal Articles

Use of Adaptive Injection Strategies to Increase the Full Load Limit of RCCI Operation

Reed Hanson, Andrew Ickes, Thomas Wallner
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. October 2016, 138(10): 102802.
Paper No: GTP-16-1034
https://doi.org/10.1115/1.4032847
Published Online: April 12, 2016
View Article titled, Use of Adaptive Injection Strategies to Increase the Full Load Limit of RCCI Operation
Open the PDF for Use of Adaptive Injection Strategies to Increase the Full Load Limit of RCCI Operation in another window
Topics: Combustion, Cylinders, Emissions, Engines, Fuels, Pressure, Silicon-on-insulator, Stress, Thermal efficiency, Exhaust gas recirculation
Proceedings Papers

Extending Lean and EGR-Dilute Operating Limits of a Modern GDI Engine Using a Low-Energy Transient Plasma Ignition System

James Sevik, Thomas Wallner, Michael Pamminger, Riccardo Scarcelli, Dan Singleton, Jason Sanders
Proc. ASME. ICEF2015, Volume 1: Large Bore Engines; Fuels; Advanced Combustion, V001T03A007, November 8–11, 2015
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2015-1048
https://doi.org/10.1115/ICEF2015-1048
View Paper titled, Extending Lean and EGR-Dilute Operating Limits of a Modern GDI Engine Using a Low-Energy Transient Plasma Ignition System
Open the PDF for Extending Lean and EGR-Dilute Operating Limits of a Modern GDI Engine Using a Low-Energy Transient Plasma Ignition System in another window
Topics: Direct injection spark ignition engines, Exhaust gas recirculation, Ignition systems, Plasmas (Ionized gases), Transients (Dynamics), Combustion, Stability, Emissions, Flames, Stress
Proceedings Papers

Use of Adaptive Injection Strategies to Increase the Full Load Limit of RCCI Operation

Reed Hanson, Andrew Ickes, Thomas Wallner
Proc. ASME. ICEF2015, Volume 1: Large Bore Engines; Fuels; Advanced Combustion, V001T03A015, November 8–11, 2015
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2015-1115
https://doi.org/10.1115/ICEF2015-1115
View Paper titled, Use of Adaptive Injection Strategies to Increase the Full Load Limit of RCCI Operation
Open the PDF for Use of Adaptive Injection Strategies to Increase the Full Load Limit of RCCI Operation in another window
Topics: Stress, Fuels, Combustion, Engines, Diesel, Emissions, Pressure, Cylinders, Natural gas, Testing
Proceedings Papers

Capturing Cyclic Variability in EGR Dilute SI Combustion Using Multi-Cycle RANS

Riccardo Scarcelli, James Sevik, Thomas Wallner, Keith Richards, Eric Pomraning, Peter K. Senecal
Proc. ASME. ICEF2015, Volume 2: Emissions Control Systems; Instrumentation, Controls, and Hybrids; Numerical Simulation; Engine Design and Mechanical Development, V002T06A010, November 8–11, 2015
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2015-1045
https://doi.org/10.1115/ICEF2015-1045
View Paper titled, Capturing Cyclic Variability in EGR Dilute SI Combustion Using Multi-Cycle RANS
Open the PDF for Capturing Cyclic Variability in EGR Dilute SI Combustion Using Multi-Cycle RANS in another window
Topics: Combustion, Cycles, Exhaust gas recirculation, Reynolds-averaged Navier–Stokes equations, Ignition, Stability, Engines, Cylinders, Internal combustion engines, Combustion systems
Proceedings Papers

Numerical and Experimental Analysis of Ignition and Combustion Stability in EGR Dilute GDI Operation

Riccardo Scarcelli, Nicholas S. Matthias, Thomas Wallner
Proc. ASME. ICEF2014, Volume 1: Large Bore Engines; Fuels; Advanced Combustion; Emissions Control Systems, V001T03A015, October 19–22, 2014
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2014-5607
https://doi.org/10.1115/ICEF2014-5607
View Paper titled, Numerical and Experimental Analysis of Ignition and Combustion Stability in EGR Dilute GDI Operation
Open the PDF for Numerical and Experimental Analysis of Ignition and Combustion Stability in EGR Dilute GDI Operation in another window
Topics: Combustion, Exhaust gas recirculation, Experimental analysis, Ignition, Stability, Cycles, Engines, Flames, Ignition systems, Computational fluid dynamics
Proceedings Papers

Assessment of Combustion Characteristics of Higher Alcohols in a Direct Injection Spark Ignition Engine

Kristina Lawyer, Thomas Wallner, Andrew Ickes, Scott Miers, Jeffrey Naber, David Ertl, Rodney Williamson
Proc. ASME. ICEF2013, Volume 2: Fuels; Numerical Simulation; Engine Design, Lubrication, and Applications, V002T02A008, October 13–16, 2013
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2013-19180
https://doi.org/10.1115/ICEF2013-19180
View Paper titled, Assessment of Combustion Characteristics of Higher Alcohols in a Direct Injection Spark Ignition Engine
Open the PDF for Assessment of Combustion Characteristics of Higher Alcohols in a Direct Injection Spark Ignition Engine in another window
Topics: Combustion, Direct injection spark ignition engines, Ethanol, Fuels, Carbon, Chain, Engines, Gasoline, Stress, Water
Proceedings Papers

High-Pressure Gaseous Injection: A Comprehensive Analysis of Gas Dynamics and Mixing Effects

Riccardo Scarcelli, Alan L. Kastengren, Christopher F. Powell, Thomas Wallner, Nicholas S. Matthias
Proc. ASME. ICEF2012, ASME 2012 Internal Combustion Engine Division Fall Technical Conference, 793-801, September 23–26, 2012
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2012-92137
https://doi.org/10.1115/ICEF2012-92137
View Paper titled, High-Pressure Gaseous Injection: A Comprehensive Analysis of Gas Dynamics and Mixing Effects
Open the PDF for High-Pressure Gaseous Injection: A Comprehensive Analysis of Gas Dynamics and Mixing Effects in another window
Topics: Gasdynamics, High pressure (Physics), Fuels, Internal combustion engines, Computational fluid dynamics, Computer simulation, X-rays, Emissions, Hydrogen, Jets
Proceedings Papers

Impact of Ethanol Content on Full-Load Combustion Behavior and Engine Control Unit Response for a Direct-Injection, Spark-Ignition Engine

Andrew M. Ickes, Thomas Wallner
Proc. ASME. IMECE2010, Volume 11: New Developments in Simulation Methods and Software for Engineering Applications; Safety Engineering, Risk Analysis and Reliability Methods; Transportation Systems, 563-573, November 12–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2010-38982
https://doi.org/10.1115/IMECE2010-38982
View Paper titled, Impact of Ethanol Content on Full-Load Combustion Behavior and Engine Control Unit Response for a Direct-Injection, Spark-Ignition Engine
Open the PDF for Impact of Ethanol Content on Full-Load Combustion Behavior and Engine Control Unit Response for a Direct-Injection, Spark-Ignition Engine in another window
Topics: Combustion, Direct injection spark ignition engines, Engines, Ethanol, Stress, Fuels, Gasoline, Calibration, Cylinders, Gasohol
Journal Articles

Correlation Between Speciated Hydrocarbon Emissions and Flame Ionization Detector Response for Gasoline/Alcohol Blends

Thomas Wallner
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. August 2011, 133(8): 082801.
https://doi.org/10.1115/1.4002893
Published Online: April 11, 2011
View Article titled, Correlation Between Speciated Hydrocarbon Emissions and Flame Ionization Detector Response for Gasoline/Alcohol Blends
Open the PDF for Correlation Between Speciated Hydrocarbon Emissions and Flame Ionization Detector Response for Gasoline/Alcohol Blends in another window
Topics: Carbon, Emissions, Engines, Ethanol, Flames, Fourier transform infrared spectroscopy, Fuels, Gasoline, Sensors, Ionization
Proceedings Papers

Correlation Between Speciated Hydrocarbon Emissions and Flame Ionization Detector Response for Gasoline/Alcohol Blends

Thomas Wallner
Proc. ASME. ICEF2010, ASME 2010 Internal Combustion Engine Division Fall Technical Conference, 119-128, September 12–15, 2010
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2010-35031
https://doi.org/10.1115/ICEF2010-35031
View Paper titled, Correlation Between Speciated Hydrocarbon Emissions and Flame Ionization Detector Response for Gasoline/Alcohol Blends
Open the PDF for Correlation Between Speciated Hydrocarbon Emissions and Flame Ionization Detector Response for Gasoline/Alcohol Blends in another window
Topics: Emissions, Ethanol, Flames, Gasoline, Ionization, Sensors, Engines, Exhaust systems, Fuels, Instrumentation