Efficient Powertrain Solutions

About the research group

The Efficient Powertrain Solutions (EPS) research group supports the end-to-end process of powertrain development from fuel to energy and emission management while its research focuses on combustion engines.

The research group is committed to developing excellence in methods of testing, simulation and control, building on detail knowledge. The scale and application areas of the used methods make the research group internationally unique.

The research group aims to develop efficient heavy-duty transport and the energy sector with an outcome of zero or even negative emissions impact. The goal is to maximise overall powertrain energy efficiency and develop integrated powertrain control solutions. This is done by providing innovative tools for design optimisation of powertrain configurations and control strategies.

Latest updates

Media release 06.05.2026

Hydrogen takes a major step forward in maritime – University of Vaasa to coordinate ambitious European demonstration

News 08.04.2026

Wärtsilä CEO Håkan Agnevall: The energy transition requires direction and the ability to adapt quickly

Hitachin ja Vaasan yliopiston yhteinen kuva allekirjoitustilaisuudesta

Media release 16.03.2026

Hitachi Energy and the University of Vaasa begin research collaboration – Optimising transformer efficiency and recovering heat to improve the en-ergy and cost efficiency of hydrogen production

Show more news

Research projects

Latest publications

Publication year	Publication	Authors
2024	Advancing Sustainable Maritime with AI/ML Enhanced Hardware-in-the-Loop Testing	Koljonen, Janne; Elsanhoury, Mahmoud; Elmusrati, Mohammed; Niemi, Seppo
2024	FTIR Analysis for Determining Stability of Methanol–HVO Blends for Non-Road Engine Application	Balogun, F.; Wang-Alho, H.; Sirviö, K.; Mikulski, M.
2024	Compatibility of Methanol-Hydrotreated Vegetable Oil Blends with Chosen Steels and Aluminum	Wang-Alho, Huaying; Sirviö, Katriina; Nuortila, Carolin; Kaivosoja, Jonna; Mikulski, Maciej; Niemi, Seppo
2024	Properties of Chemically Stabilized Methanol–HVO Blends	Wang-Alho, Huaying; Sirviö, Katriina; Balogun, Fatimoh; Kaivosoja, Jonna; Nuortila, Carolin; Mikulski, Maciej; Niemi, Seppo
2024	Start of Injection Influence on In-Cylinder Fuel Distribution, Engine Performance and Emission Characteristic in a RCCI Marine Engine	Kakoee, Alireza; Mikulski, Maciej; Vasudev, Aneesh; Axelsson, Martin; Hyvönen, Jari; Salahi, Mohammad Mahdi; Mahmoudzadeh Andwari, Amin
2024	Advancing autonomy of chemical kinetics based multizone models for reactivity controlled compression ignition engines	Vasudev, Aneesh; Kakoee, Alireza; Axelsson, Martin; Maleki Almani, Hamidreza; Hyvönen, Jari; Mikulski, Maciej
2024	Effects of Fuel Hydrochloric Acid Contamination on Selected Metals	Kaivosoja, Jonna; Sirviö, Katriina; Nuortila, Carolin; Niemi, Seppo
2024	Integrated 1D Simulation of Aftertreatment System and Chemistry-Based Multizone RCCI Combustion for Optimal Performance with Methane Oxidation Catalyst	Kakoee, Alireza; Hunicz, Jacek; Mikulski, Maciej
2024	Variable valve actuation for efficient exhaust thermal management in an off-road diesel engine	Kim, Jeyoung; Vallinmaki, Marko; Tuominen, Tino; Mikulski, Maciej

Former Renewable Energy research group's publications

Formerly, the Efficient Powertrain Solutions (EPS) research group was part of the Renewable Energy research group.

Publication year	Publication	Authors
2023	Tyre pyrolytic oil blends in a state-of-the-art compression ignition engine: Towards fuel-optimised combustion	Hunicz, Jacek; Mikulski, Maciej; Rybak, Arkadiusz
2023	An experimental assessment on a diesel engine powered by blends of waste-plastic-derived pyrolysis oil with diesel	Januszewicz, Katarzyna; Hunicz, Jacek; Kazimierski, Paweł; Rybak, Arkadiusz; Suchocki, Tomasz; Duda, Kamil; Mikulski, Maciej
2023	Electromagnetic–Thermal Analyses of Distributed Antennas Embedded Into a Load-Bearing Wall	Vähä-Savo, Lauri; Haneda, Katsuyuki; Icheln, Clemens; Lü, Xiaoshu
2023	Research on the indoor temperature regulation characteristics of a nearly zero energy building with the nonlinear heat capacity building components : A simple model	Zhang, Qunli; Liu, Yimo; Zhang, Qiuyue; Wang, Gang; Lü, Xiaoshu
2023	Towards Integration of Energy Storage Systems for Carbon Neutral Buildings : A Review of Multi-Criteria Decision Making Approaches	Lü, Xiaoshu; Lu, Tao; Tervola, Pekka
2023	Reactivity enhancement of natural gas/diesel RCCI engine by adding ozone species	Gharehghani, Ayat; Salahi, Mohammad Mahdi; Andwari, Amin Mahmoudzadeh; Mikulski, Maciej; Könnö, Juho
2023	Experimental research on direct expansion heat pump flue gas waste heat recovery and humidification nitrogen reduction system	Zhang, Qunli; Huang, Haotian; Zhai, Hongbao; Zhao, Wenqiang; Lü, Xiaoshu
2023	Urban short-term traffic speed prediction with complicated information fusion on accidents	Xu, Xing; Hu, Xianqi; Zhao, Yun; Lü, Xiaoshu; Aapaoja, Aki
2023	Co-Pyrolysis Behavior, Kinetic and Mechanism of Waste-Printed Circuit Board with Biomass	Prajapati, Sonalben B.; Gautam, Alok; Gautam, Shina; Yao, Zhitong; Tesfaye, Fiseha; Lü, Xiaoshu
2023	Simulation and experimental investigations of ultrasonic-assisted drilling with Micro-PDC bit	Zhang, Congshan; Zhao, Yan; Gao, Ke; Zhang, Cong; Lv, Xiaoshu; Xie, Xiaobo