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Journal Articles

Thermoelectric Generation From Exhaust Heat in Electrified Natural Gas Trucks: Modeling and Analysis of an Integrated Engine System Performance Improvement

Ratnak Sok, Jin Kusaka, Hisaharu Nakashima, Hidetaka Minagata, Pavlos Dimitriou, Jinlong Liu

J. Energy Resour. Technol. July 2023, 145(7): 071702.

Paper No: JERT-22-1547

DOI: https://doi.org/10.1115/1.4056722

Published Online: February 14, 2023

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Topics: Compressed natural gas, Engines, Exhaust systems, Cylinders, Modeling

Proceedings Papers

Modeling Analysis on Combined Effects of VVT/VCR Engine Technology to Reduce Fuel Consumption of Light-Duty Parallel Hybrid CNG Trucks

Ratnak Sok, Jin Kusaka, Hisaharu Nakashima, Hidetaka Minagata

Proc. ASME. IMECE2022, Volume 6: Energy, V006T08A041, October 30–November 3, 2022

Paper No: IMECE2022-96282

DOI: https://doi.org/10.1115/IMECE2022-96282

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Topics: Compressed natural gas, Compression, Engines, Fuel consumption, Modeling analysis, Trucks, Valves, Batteries, Cycles, Computer software

Proceedings Papers

Thermoelectric Generation From Exhaust Heat in Electrified Natural Gas Trucks - Part1: Modeling and Analysis on Engine System Efficiency Improvement

Ratnak Sok, Jin Kusaka, Hisaharu Nakashima, Hidetaka Minagata

Proc. ASME. IMECE2022, Volume 6: Energy, V006T08A018, October 30–November 3, 2022

Paper No: IMECE2022-96245

DOI: https://doi.org/10.1115/IMECE2022-96245

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Topics: Compressed natural gas, Engines, Exhaust systems, Generators, Heat, Modeling, Natural gas, System efficiency, Trucks, Brakes

Proceedings Papers

Thermoelectric Exhaust Heat Recovery to Maximize Brake Thermal Efficiency of Advanced Diesel Engines: Modeling and Baseline Analysis

Ratnak Sok, Jin Kusaka

Proc. ASME. ICEF2022, ASME 2022 ICE Forward Conference, V001T07A003, October 16–19, 2022

Paper No: ICEF2022-90505

DOI: https://doi.org/10.1115/ICEF2022-90505

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Topics: Brakes, Diesel engines, Engines, Exhaust systems, Heat recovery, Modeling, Thermal efficiency

Proceedings Papers

Examination of Resonant Frequencies Generated by Combustion Oscillation in a Combustor Fueled by a Hydrogen-Natural Gas Mixture and an Upstream Pipe

Akane Uemichi, Yifan Lyu, Jin Kusaka, Shigehiko Kaneko

Proc. ASME. IMECE2021, Volume 1: Acoustics, Vibration, and Phononics, V001T01A016, November 1–5, 2021

Paper No: IMECE2021-68521

DOI: https://doi.org/10.1115/IMECE2021-68521

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Topics: Combustion, Combustion chambers, Hydrogen, Oscillations, Pipes, Resonance

Proceedings Papers

Experimental Investigation on the Effects of Direct Fuel Injection Into Low-O2 Recompression Interval of an HCCI Engine

Ratnak Sok, Jin Kusaka

Proc. ASME. IMECE2021, Volume 8A: Energy, V08AT08A016, November 1–5, 2021

Paper No: IMECE2021-69240

DOI: https://doi.org/10.1115/IMECE2021-69240

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Topics: Fuels, Homogeneous charge compression ignition engines

Journal Articles

Experimental Investigation of Direct Fuel Injection Into Low-Oxygen Recompression Interval in a Homogenous Charge Compression Ignition Engine

Ratnak Sok, Jin Kusaka

J. Energy Resour. Technol. January 2022, 144(1): 012301.

Paper No: JERT-21-1603

DOI: https://doi.org/10.1115/1.4052470

Published Online: October 5, 2021

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Topics: Combustion, Cylinders, Emissions, Engines, Fuels, Homogeneous charge compression ignition engines, Nitrogen oxides, Pressure, Silicon-on-insulator, Valves

Proceedings Papers

Numerical Study on the Adaptation of Diesel Wave Breakup Model for Large-Eddy Simulation of Non-Reactive Gasoline Spray

Ratnak Sok, Beini Zhou, Jin Kusaka

Proc. ASME. POWER2021, ASME 2021 Power Conference, V001T05A006, July 20–22, 2021

Paper No: POWER2021-64537

DOI: https://doi.org/10.1115/POWER2021-64537

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Topics: Diesel, Gasoline, Large eddy simulation, Sprays, Waves, Reynolds-averaged Navier–Stokes equations, Drops, Fuels, Simulation, Turbulence

Journal Articles

Experimental and Numerical Analysis on the Influences of Direct Fuel Injection Into Oxygen-Depleted Environment of a Homogeneous Charge Compression Ignition Engine

Ratnak Sok, Kei Yoshimura, Kenjiro Nakama, Jin Kusaka

J. Energy Resour. Technol. December 2021, 143(12): 122302.

Paper No: JERT-20-2114

DOI: https://doi.org/10.1115/1.4050051

Published Online: March 4, 2021

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Topics: Combustion, Computational fluid dynamics, Cylinders, Fuels, Homogeneous charge compression ignition engines, Pressure, Silicon-on-insulator, Simulation, Valves, Engines

Proceedings Papers

Experimental and Numerical Analysis on the Influence of Direct Fuel Injection Into O 2 -Depleted Environment of a GDI-HCCI Engine

Ratnak Sok, Jin Kusaka

Proc. ASME. ICEF2020, ASME 2020 Internal Combustion Engine Division Fall Technical Conference, V001T03A001, November 4–6, 2020

Paper No: ICEF2020-2909

DOI: https://doi.org/10.1115/ICEF2020-2909

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Topics: Engines, Fuels, Homogeneous charge compression ignition engines, Numerical analysis

Journal Articles

Prediction of Ultra-Lean Spark Ignition Engine Performances by Quasi-Dimensional Combustion Model With a Refined Laminar Flame Speed Correlation

Ratnak Sok, Kyohei Yamaguchi, Jin Kusaka

J. Energy Resour. Technol. March 2021, 143(3): 032306.

Paper No: JERT-20-1910

DOI: https://doi.org/10.1115/1.4049127

Published Online: December 10, 2020

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Topics: Combustion, Engines, Flames, Spark-ignition engine, Pressure, Stress, Cylinders

Proceedings Papers

Prediction of Ultra-Lean SI Engine Performance by QD-Combustion Model With an Improved Laminar Flame Speed

Ratnak Sok, Jin Kusaka, Kyohei Yamaguchi

Proc. ASME. POWER2020, ASME 2020 Power Conference, V001T03A002, August 4–5, 2020

Paper No: POWER2020-16061

DOI: https://doi.org/10.1115/POWER2020-16061

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Topics: Combustion, Flames, Spark-ignition engine, Engines, Cycles, Fuels, Gasoline engines, Pressure, Simulation, Temperature

Proceedings Papers

Effect of Fuel Injection Timing During Negative Valve Overlap Period on a GDI-HCCI Engine

Sok Ratnak, Jin Kusaka, Yasuhiro Daisho, Kei Yoshimura, Kenjiro Nakama

Proc. ASME. ICEF2018, Volume 1: Large Bore Engines; Fuels; Advanced Combustion, V001T03A020, November 4–7, 2018

Paper No: ICEF2018-9653

DOI: https://doi.org/10.1115/ICEF2018-9653

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Topics: Engines, Fuels, Homogeneous charge compression ignition engines, Valves, Combustion, Chemical reactions, Compression, Cooling, Emissions, Engineering simulation

Journal citation

NARROW

Thermoelectric Generation From Exhaust Heat in Electrified Natural Gas Trucks: Modeling and Analysis of an Integrated Engine System Performance Improvement

Modeling Analysis on Combined Effects of VVT/VCR Engine Technology to Reduce Fuel Consumption of Light-Duty Parallel Hybrid CNG Trucks

Thermoelectric Generation From Exhaust Heat in Electrified Natural Gas Trucks - Part1: Modeling and Analysis on Engine System Efficiency Improvement

Thermoelectric Exhaust Heat Recovery to Maximize Brake Thermal Efficiency of Advanced Diesel Engines: Modeling and Baseline Analysis

Examination of Resonant Frequencies Generated by Combustion Oscillation in a Combustor Fueled by a Hydrogen-Natural Gas Mixture and an Upstream Pipe

Experimental Investigation on the Effects of Direct Fuel Injection Into Low-O2 Recompression Interval of an HCCI Engine

Experimental Investigation of Direct Fuel Injection Into Low-Oxygen Recompression Interval in a Homogenous Charge Compression Ignition Engine

Numerical Study on the Adaptation of Diesel Wave Breakup Model for Large-Eddy Simulation of Non-Reactive Gasoline Spray

Experimental and Numerical Analysis on the Influences of Direct Fuel Injection Into Oxygen-Depleted Environment of a Homogeneous Charge Compression Ignition Engine

Experimental and Numerical Analysis on the Influence of Direct Fuel Injection Into O 2 -Depleted Environment of a GDI-HCCI Engine

Prediction of Ultra-Lean Spark Ignition Engine Performances by Quasi-Dimensional Combustion Model With a Refined Laminar Flame Speed Correlation

Prediction of Ultra-Lean SI Engine Performance by QD-Combustion Model With an Improved Laminar Flame Speed

Effect of Fuel Injection Timing During Negative Valve Overlap Period on a GDI-HCCI Engine

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