Performance and emission characteristics of diesel engines running on gaseous fuels in dual-fuel mode

Nguyen, Van Nhanh; Nayak, Swarup Kumar; Le, Huu Son; Kowalski, Jerzy; Deepanraj, Balakrishnan; Duong, Xuan Quang; Truong, Thanh Hai; Tran, Viet Dung; Cao, Dao Nam; Nguyen, Phuoc Quy Phong

doi:10.1016/j.ijhydene.2023.09.130

Cited by 7 publications

(1 citation statement)

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“…Other solutions are being investigated in the literature to improve the performance of diesel engines and to decrease their carbon emissions and to evaluate the effect on local pollution, including the use of different blends of biofuels [24] or the use of hydrogen or other gaseous fuels in dual-fuel engines [25,26], or hydrogen blends with diesel or biodiesel [27]. Results mostly show positive impacts, although in some cases, the specific fuel consumption is increased, as are some specific pollutant emissions.…”

Section: Literature Reviewmentioning

confidence: 99%

The Use of Biomethane in Internal Combustion Engines for Public Transport Decarbonization: A Case Study

Noussan

2023

Energies

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Public transport can play a central role in representing a viable and sustainable mobility solution, especially in urban areas. Average energy consumption and emissions per passenger are much lower than for private cars. At the same time, current buses often mostly rely on diesel, and there are different solutions that can contribute to public transport decarbonization. Biomethane is among the options to exploit local low-carbon resources to decrease the emissions of public transport in urban environments. This paper presents the analysis of a real case study considering real data on the fuel consumption and mileage of the existing bus fleet in the city of Turin, Italy, composed by diesel and natural gas buses. The aim of this study is to estimate the effect of different penetration levels of biomethane in substitution of the current fuels. The results show that the use of biomethane in urban buses could save to up to 71% of emissions compared to the current situation, and savings would increase to 75% when deploying biomethane and electric buses together. Average emissions per pkm could decrease from a current level of 85.5 gCO2/pkm to 21.3–63.4 gCO2/pkm depending on the penetration of biomethane and electric buses. The sensitivity analysis shows even higher savings when accounting for the future decrease of the electricity carbon intensity in Italy and for the additional benefits related to avoided emissions from manure disposal. The results of the analysis demonstrate the potential contribution of biomethane in decarbonizing urban buses, and the findings presented for this case study can be of use for policy makers and researchers that deal with a similar situation in other cities and countries.

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