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Advances in Diesel-LNG Internal Combustion Engines

Department of Mechanical Engineering, College of Engineering, Prince Mohammad Bin Fahd University, Al Khobar 34754, Saudi Arabia
Appl. Sci. 2020, 10(4), 1296; https://doi.org/10.3390/app10041296
Received: 16 December 2019 / Revised: 10 January 2020 / Accepted: 14 January 2020 / Published: 14 February 2020
(This article belongs to the Section Mechanical Engineering)
Diesel-LNG internal combustion engines (ICEs) are the most promising light and heavy-duty truck (HDT) powering solution for a transition towards a mixed electric-hydrogen renewable energy economy. The diesel-liquid CH4 ICEs have indeed many commonalities with diesel-liquid H2 ICEs, in the infrastructure, on-board fuel storage, and injection technology, despite the fact H2 needs a much lower temperature. The paper outlines the advantages of dual fuel (2F) diesel-LNG ICEs developed adopting two high-pressure (HP) injectors per cylinder, one for the diesel and one for the LNG, plus super-turbocharging. The diesel-LNG ICEs provide high fuel energy conversion efficiencies, and reduced CO2, PM, and NOx emissions. Super-turbocharging permits the shaping of the torque curve while improving acceleration transients. Diesel-LNG ICEs may also clean up the air of background pollution in many polluted areas in the world. Computational results prove the steady-state advantages of the proposed novel design. While the baseline diesel model is a validated model, the 2F LNG model is not. The perfect alignment of the diesel and diesel-LNG ICE performances proven by Westport makes however the proposed results trustworthy. View Full-Text
Keywords: LNG; diesel; dual-fuel; internal combustion engines LNG; diesel; dual-fuel; internal combustion engines
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Boretti, A. Advances in Diesel-LNG Internal Combustion Engines. Appl. Sci. 2020, 10, 1296.

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