Experimental evaluation of low-displacement compression ignited engines operating with hydroxy gas as a supplementary gaseous fuel

Duarte, Natalia; Arango, Donovan; Polanco, Geanette; Valencia, Guillermo; Forero, Jorge Duarte

doi:10.1016/j.heliyon.2022.e11545

Cited by 4 publications

(3 citation statements)

References 37 publications

(54 reference statements)

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“…The estimation of those two emission level is made with the mathematical model. Emission level of the NO is estimated with the relation proposed by Schroer [21]: 2.11 • 𝑛 −0.39 • 𝑄 2.49 • 𝑚 𝑎 −5.01 • (∫ 𝑇 11 • 𝑝 9 • 𝑑𝑄 𝑄 0 ) 0.28 (20) where: -coefficient of air excess [-], n-speed [rev/min], Q-quantity of heat release [kJ/cycle], mafresh charge mass [g], T-temperature [K], p-pressure [bar], C1-constant, C1 = 0.24 • 10 -10 , [(rot/s) 0.39 • g 5.01 • ppm / kJ 2.77 • K 3.08 • bar 2.52 ] The smoke mass formation speed is evaluated with the formula proposed by Hiroyasu [22]:…”

Section: Thermodynamic Modelling Of the Combustion Processmentioning

confidence: 99%

“…Liu [19] develops a study based on modelling showing that pre-chamber hydrogen combustion may leads to the increase of the thermal efficiency and reduction of the NOx emission level for a diesel engine, even the pressure rise rate during combustion is increased by hydrogen use. Duarte [20] shows the reduction of the NOx emission level at low loads for a diesel engine fueled with hydrogen. But the NOx emission level increases at medium and high engine loads [20].…”

Section: Introductionmentioning

confidence: 99%

“…Duarte [20] shows the reduction of the NOx emission level at low loads for a diesel engine fueled with hydrogen. But the NOx emission level increases at medium and high engine loads [20]. The particulate matter is reduced also by hydrogen use for all engine loads, once with the increase of hydrogen amount the particulate matter level being decreased with 12% [20].…”

Section: Introductionmentioning

confidence: 99%

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Theoretical aspects of the use of hydrogen in the diesel engine

Cernat,

Negurescu,

Pana

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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The promotion of fuels with low carbon content is the solution to reduce pollutant emissions in all areas of transport in a relatively short time. In this context, hydrogen is privileged, being a viable alternative fuel for internal combustion engines in all fields of transport, having the advantage of preserving the basic structure of the engine. The main obstacles to the large-scale expansion of the use of hydrogen as a fuel in internal combustion engines in transport are determined by the cost of production, storage on board the vehicle and the distribution network, large investments being required. The concept of using hydrogen as an alternative fuel to the diesel engine is relatively recent, the concerns of specialists being more intense in the last two decades. The improvement of the energy and pollution performance of the diesel engine when operating in a dual system, with diesel and hydrogen, is determined by the improvement of the combustion process due to the good combustion properties of hydrogen. The paper presents theoretical modeling results regarding the influence of hydrogen on the combustion pressure, the pressure rise rate, the heat release rate, the indicated efficiency and the nitrogen oxides emission level.

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