Experimental study on a spark ignition engine fuelled by methane–hydrogen mixtures

Akansu, Selahaddin Orhan; Kahraman, Nafiz; Çeper, Bilge Albayrak

doi:10.1016/j.ijhydene.2007.05.034

Cited by 156 publications

(61 citation statements)

References 15 publications

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“…Collier et al examined the untreated exhaust emissions of a hydrogen-enriched compressed natural gas (HCNG) production engine [50]. They used variable composition hydrogen/NG mixtures and drew the following conclusions: the addition of hydrogen increases NOx emission for a given equivalence ratio while it decreases total HC emissions which is in good agreement with Akansu's results [51]. They also found that as the hydrogen percentage increases, the lean limit of combustion is significantly extended.…”

Section: Propertiesmentioning

confidence: 70%

Use of Hydrogen-Methane Blends in Internal Combustion Engines

Çeper¹

2012

Hydrogen Energy - Challenges and Perspectives

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Section: Propertiesmentioning

confidence: 70%

Use of Hydrogen-Methane Blends in Internal Combustion Engines

Çeper¹

2012

Hydrogen Energy - Challenges and Perspectives

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“…The following results refer to the combustion behaviour of CH 4 and of CH 4 -H 2 mixtures, with a H 2 fraction of 20% and 30% in volume: these values optimize the trade-off between additional technical complexity and performance benefits, allowing for a direct utilization of CH 4 -H 2 mixtures in current natural gas engines [28,29]. The initial temperature T 0 varied in the range 293÷305 K, while the initial pressure P 0 was set at 3, 6, 12 and 18 bar (abs.).…”

Section: Laminar Burning Propertiesmentioning

confidence: 99%

Burning Behaviour of High-Pressure CH4-H2-Air Mixtures

Moccia

D'Alessio

2013

Energies

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Experimental characterization of the burning behavior of gaseous mixtures has been carried out, analyzing spherical expanding flames. Tests were performed in the Device for Hydrogen-Air Reaction Mode Analysis (DHARMA) laboratory of Istituto Motori-CNR. Based on a high-pressure, constant-volume bomb, the activity is aimed at populating a systematic database on the burning properties of CH 4 , H 2 and other species of interest, in conditions typical of internal combustion (i.c.) engines and gas turbines. High-speed shadowgraph is used to record the flame growth, allowing to infer the laminar burning parameters and the flame stability properties. Mixtures of CH 4 , H 2 and air have been analyzed at initial temperature 293÷305 K, initial pressure 3÷18 bar and equivalence ratio  = 1.0. The amount of H 2 in the mixture was 0%, 20% and 30% (vol.). The effect of the initial pressure and of the Hydrogen content on the laminar burning velocity and the Markstein length has been evaluated: the relative weight and mutual interaction has been assessed of the two controlling parameters. Analysis has been carried out of the flame instability, expressed in terms of the critical radius for the onset of cellularity, as a function of the operating conditions.

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“…Various experimental facilities have been developed for the investigation of the combustion processes of methane/hydrogen blends, and the performance of SI engines under different operating conditions and strategies (Demuynck et al 2009;Moreno et al 2012), as well as for the in-cylinder processes and their exhaust emissions (Akansu et al 2007). Apart from these experimental studies, there exist many simulation works focusing mainly on the engine performance parameters (Aliramezani, et al 2013) and to some extent to the nitric oxide (NO) emissions, using the thermal NO production path (Dimopoulos et al 2007), widely known as the "three-equation Zeldovich mechanism".…”

Section: Introductionmentioning

confidence: 99%