Experimental and modeling analysis on thermoelectric heat recovery to maximize the performance of next-generation diesel engines dedicated for future electrified …

R Sok, J Kusaka - Applied Thermal Engineering, 2023 - Elsevier
Thermoelectric generators (TEG) can recover significant energy loss from exhaust heat and
improve brake thermal efficiency (BTE) of internal combustion engine (ICE) vehicles …

[HTML][HTML] Energy and exergy characteristics of an ethanol-fueled heavy-duty SI engine at high-load operation using lean-burn combustion

B Hong, A Lius, SK Mahendar, M Mihaescu… - Applied Thermal …, 2023 - Elsevier
Ethanol, as the most produced renewable biofuel, is considered a promising low-carbon
alternative to petroleum-based fuels in the transport sector due to its high energy density …

Thermoelectric generation from exhaust heat in electrified natural gas trucks: modeling and analysis of an integrated engine system performance improvement

R Sok, J Kusaka, H Nakashima… - Journal of …, 2023 - asmedigitalcollection.asme.org
Using thermoelectric generators (TEG) to reduce exhaust heat loss from internal combustion
engines can improve emissions and the fuel economy of conventional and electrified …

Fuel-reforming effects on a gasoline direct injection engine under a low-temperature combustion mode: Experimental and kinetics analyses

R Sok, J Kusaka - Energy Conversion and Management, 2022 - Elsevier
Dedicated in-cylinder reforming where gasoline fuel is injected directly into a rich mixture
can control the combustion of gasoline engines. This work investigates the effects of …

A novel laminar flame speed equation for quasi-dimensional combustion model refinement in advanced, ultra-lean gasoline spark-ignited engines

R Sok, H Kataoka, J Kusaka, A Miyoshi, RD Reitz - Fuel, 2023 - Elsevier
In model-based combustion simulations, laminar flame speed (LFS) is a vital parameter for
predicting spark-ignited (SI) turbulent combustion, which is unstable under ultra-lean …

The impact of miller valve timing on combustion and charging performance of an ethanol-and methanol-fueled heavy-duty spark ignition engine

SK Mahendar, V Venkataraman… - SAE International Journal …, 2021 - JSTOR
Combustion engines and liquid fuels are likely to continue playing a central role in freight
transportation with renewable fuels reducing carbon emissions. Ethanol and methanol are …

[HTML][HTML] Impacts of low-temperature heat release on unstretched laminar burning velocity in advanced flex-fuel gasoline-ethanol engines

K Isobe, K Yoshimura, T Kobayashi, R Sok… - Applied Thermal …, 2025 - Elsevier
Improving brake thermal efficiency (BTE) of flex-fuel engines can contribute to decarbonizing
conventional and hybridized vehicles running on spark-ignited (SI) engines. High …

Experimental investigation of direct fuel injection into low-oxygen recompression interval in a homogenous charge compression ignition engine

R Sok, J Kusaka - Journal of Energy Resources …, 2022 - asmedigitalcollection.asme.org
This work analyzed measured data from a single-cylinder engine operated under the
gasoline direction injection homogenous charge compression ignition (GDI-HCCI) mode …

Numerical Methods on VVA and VCR Concepts for Fuel Economy Improvement of a Commercial CNG Truck

R Sok, K Takeuchi, K Yamaguchi, J Kusaka - 2020 - sae.org
Natural gas has been used in spark-ignition (SI) engines of natural gas vehicles (NGVs) due
to its resource availability and stable price compared to gasoline. It has the potential to …

Optimization of a Spark Ignition Engine Knock and Performance Using the Epsilon-Constrained Differential Evolution Algorithm and Multi-Objective Differential …

Y Kou, Y Gao, Y You, Y Wang - ACS omega, 2022 - ACS Publications
Since the advent of the internal combustion engine, knock has been a vital issue limiting the
thermal efficiency of spark ignition engines under heavy load conditions. The occurrence of …