Realization of Low Temperature Combustion in an Unmodified Diesel Engine

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Márton Virt
Máté Zöldy


Heavy-duty diesel engines are an essential part of road transportation. Since viable alternatives are not expected in the short and medium term, the problematic emission characteristics of compression ignition engines have to be addressed. Low temperature combustion (LTC) is an alternative combustion method for compression ignition engines that allows low particulate matter and nitrogen oxide emissions while improving efficiency. To overcome the difficulties of market introduction, the realization of such alternative combustion methods should come with marginal engine modifications. Thus, this work investigates the possible realization of LTC in an unmodified diesel engine. LTC methods with and without injection strategy modifications were also studied to provide sufficient recommendations for other researchers. It was concluded that techniques requiring early direct injection, such as homogeneous charge compression ignition (HCCI) require a narrow cone angle injector to reduce wall impingement. It was also concluded that modulated kinetics (MK) type LTC can be easily achieved by applying a conventional injection strategy and high amounts of cooled exhaust gas recirculation. The realized MK combustion resulted in an enhanced NOx-PM trade-off and a lower peak pressure rise rate compared to normal operation.

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Virt, M., & Zöldy, M. (2024). Realization of Low Temperature Combustion in an Unmodified Diesel Engine. Cognitive Sustainability, 3(2).


Agarwal, A. K.; Singh, A. P.; Maurya, R. K. (2017). Evolution, challenges and path forward for low temperature combustion engines, Progress in Energy and Combustion Science

Duan, X.; Lai, M.C.; Jansons, M.; Guo, G.; Liu, J. (2021). A review of controlling strategies of the ignition timing and combustion phase in homogeneous charge compression ignition (HCCI) engine, Fuel, Volume 285, 119142, ISSN 0016-2361,

Edström, K. (2020). “Battery 2030+ Roadmap”,

Elkelawy, M.; El Shenawy, E.A.; Mohamed, S. A.; Elarabi, M. M.; Bastawissi, H. A. (2022) Impacts of EGR on RCCI engines management: A comprehensive review, Energy Conversion and Management: X, Volume 14, 100216, ISSN 2590-1745,

Fetting, C. (2020). “The European Green Deal”, ESDN Report, December 2020, ESDN Office, Vienna

Heywood, J.B. (1988). Internal Combustion Engine Fundamentals; McGraw-Hill: New York, NY, USA

Hoang, A. T. (2020). Critical review on the characteristics of performance, combustion and emissions of PCCI engine controlled by early injection strategy based on narrow-angle direct injection (NADI). Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 1–15.

Koller, T.; Tóth-Nagy, C.; Perger, J. (2022). „Implementation of vehicle simulation model in a modern dynamometer test environment.” Cognitive Sustainability, 1(4).

Krishnamoorthi, M.; Malayalamurthi, R.; Zhixia He, Sabariswaran Kandasamy. (2019). A review on low temperature combustion engines: Performance, combustion and emission characteristics. Renewable and Sustainable Energy Reviews 116, 109404

Lee, Y.; Huh, K. Y. (2014) Analysis of different modes of low temperature combustion by ultra-high EGR and modulated kinetics in a heavy duty diesel engine, Applied Thermal Engineering, Volume 70, Issue 1, 2014, Pages 776-787, ISSN 1359-4311,

Ngoma, M.; Antonio André, C. B. (2023). “Production of Light Naphtha by Flash Distillation of Crude Oil” Cognitive Sustainability, 2(4), 10-19.

Nyerges, Á.; Zöldy, M. (2020). Verification and comparison of nine exhaust gas recirculation mass flow rate estimation methods. Sensors, 20(24), 7291.

Nyerges, Á.; Zöldy, M. (2023). Ranking of four dual loop EGR modes. Cogn. Sustain., 2.

Rahimi Boldaji, M., Sofianopoulos, A., Mamalis, S., and Lawler, B. (2018). "Effects of Mass, Pressure, and Timing of Injection on the Efficiency and Emissions Characteristics of TSCI Combustion with Direct Water Injection," SAE Technical Paper 2018-01-0178,

Singh, A.P., Agarwal, A.K. (2018). Low-Temperature Combustion: An Advanced Technology for Internal Combustion Engines. In: Srivastava, D., Agarwal, A., Datta, A., Maurya, R. (eds) Advances in Internal Combustion Engine Research. Energy, Environment, and Sustainability. Springer, Singapore.

Tóth, O.; Holló, A.; and Hancsók, J. (2020). “Alternative Component Containing Diesel Fuel from Different Waste Sources.” JOURNAL OF ENVIRONMENTAL MANAGEMENT 265. doi:10.1016/j.jenvman.2020.110562.

Virt, M.; Arnold, U. (2022). Effects of Oxymethylene Ether in a Commercial Diesel Engine. Cogn. Sustain., 1.

Virt. M.; Nyerges, Á. (2023) Artificial intelligence based simulation of different EGR modes IEEE 2nd International Conference on Cognitive Mobility (CogMob)

Virt, M.; Zöldy, M. (2024). Cost Efficient Training Method for Artificial Neural Networks based on Engine Measurements, Acta Polytechnica Hungarica, Vol. 21, No. 7, pp 123-145.

Zeldovich, Y.B. (1946). The oxidation of nitrogen in combustion and explosions. Acta Physicochem., 21, 577–628

Zöldy, M. (2009) “Potential future renewable fuel challanges for internal combustion engine”, Járművek és Mobilgépek, II.évf., 2009, pp. 397-400

Zöldy M. (2007) “Bioethanol-biodiesel-diesel oil blends effect on cetane number and viscosity”, 6th International Colloquium Fuels 2007, Technische Akademie Esslingen,

Zöldy, M.; Vass, S. (2018). “Detailed modelling of the internal processes of an injector for common rail systems”. Journal of KONES, 25(2), 415-426.

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