Technical overview of compressed natural gas (CNG) as a transportation fuel

Khan, Muhammad Imran; Yasmin, Tabassum; Shakoor, Abdul

doi:10.1016/j.rser.2015.06.053

Cited by 340 publications

(153 citation statements)

References 85 publications

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“…Because NG is clean burning and confers power supply advantages, NG fuel is a viable alternative to traditional gasoline/diesel fuel (Hao et al 2016;Khan et al 2015;Osorio-Tejada et al 2015). In recent years, China has increased its efforts to reduce transportation emissions and to reduce the dependence on foreign oil by using NG fuel and by developing natural gas vehicles (NGVs) (see Table 1).…”

Section: Introductionmentioning

confidence: 99%

Petroleum substitution, greenhouse gas emissions reduction and environmental benefits from the development of natural gas vehicles in China

et al. 2018

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This study develops a bottom-up model to quantitatively assess the comprehensive effects of replacing traditional petroleum-powered vehicles with natural gas vehicles (NGVs) in China based on an investigation of the direct energy consumption and critical air pollutant (CAP) emission intensity, life-cycle energy use and greenhouse gas (GHG) emission intensity of NGV fleets. The results indicate that, on average, there are no net energy savings from replacing a traditional fuel vehicle with an NGV. Interestingly, an NGV results in significant reductions in direct CAP and life-cycle GHG emissions compared to those of a traditional fuel vehicle, ranging from 61% to 76% and 12% to 29%, respectively. Due to the increasing use of natural gas as a vehicle fuel in China (i.e. approximately 28.2 billion cubic metres of natural gas in 2015), the total petroleum substituted with natural gas was approximately 23.8 million tonnes (Mt), which generated a GHG emission reduction of 16.9 Mt of CO 2 equivalent and a CAP emission reduction of 1.8 Mt in 2015. Given the significant contribution of NGVs, growing the NGV population in 2020 will further increase the petroleum substitution benefits and CAP and GHG emission reduction benefits by approximately 42.5 Mt of petroleum-based fuel, 3.1 Mt of CAPs and 28.0 Mt of GHGs. By 2030, these benefits will reach 81.5 Mt of traditional petroleum fuel, 5.6 Mt of CAPs and 50.5 Mt of GHGs, respectively.

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Section: Introductionmentioning

confidence: 99%

Petroleum substitution, greenhouse gas emissions reduction and environmental benefits from the development of natural gas vehicles in China

et al. 2018

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“…In many scientific papers the subject of the research is using various alternative fuels [15][16][17], and reduction in the consumption of lubricating oils and plastic lubricants [18]. One of the chief benefits of CNG is that it provides a source of affordable energy [19]. Environmental considerations play the main role in the dissemination of combustion engines with natural gas.…”

Section: Introductionmentioning

confidence: 99%

Technical-economic aspects of CNG gas usage in buses of urban communication

Caban

Ignaciuk

2018

Engineering for Rural Development

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Abstract. After Poland's accession to the European Union, CNG supply began to be popularized. Jelcz buses powered by engines using diesel and CNG were used for comparative studies. The analysis was performed based on actual data obtained from the observation of the use of buses in the Municipal Transport Company in Przemyśl (MZK Przemyśl). We present, among other things, a comparative analysis of the direct operating costs of public transport buses powered by compressed natural gas and diesel fuel. CNG as a fuel allows to reduce the emission of harmful substances to the atmosphere, which is not without significance in the case of public transport, and this aspect of CNG gas use should be emphasized the most. The research showed differences in the operation and service of the vehicles powered by CNG installation in relation to the vehicles powered by diesel fuel, which may be important in connection with the conduct of transport activities.

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“…There are currently more than 18 million CNG-powered vehicles in the world, of which around 93% are light duty vehicles and trucks. Natural gas can be refueled at over 26,600 stations around the world [1].…”

Section: Introductionmentioning

confidence: 99%

Turbulent spark-jet ignition in SI gas fuelled engine

et al. 2017

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Abstract. The article contains a thermodynamic analysis of a new combustion system that allows the combustion of stratified gas mixtures with mean air excess coefficient in the range 1.4-1.8. Spark ignition was used in the pre-chamber that has been mounted in the engine cylinder head and contained a rich mixture out of which a turbulent flow of ignited mixture is ejected. It allows spark-jet ignition and the turbulent combustion of the lean mixture in the main combustion chamber. This resulted in a two-stage combustion system for lean mixtures. The experimental study has been conducted using a single-cylinder test engine with a geometric compression ratio  = 15.5 adapted for natural gas supply. The tests were performed at engine speed n = 2000 rpm under stationary engine load when the engine operating parameters and toxic compounds emissions have been recorded. Analysis of the results allowed to conclude that the evaluated combustion system offers large flexibility in the initiation of charge ignition through an appropriate control of the fuel quantities supplied into the pre-chamber and into the main combustion chamber. The research concluded with determining the charge ignition criterion for a suitably divided total fuel dose fed to the cylinder.

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Technical overview of compressed natural gas (CNG) as a transportation fuel

Cited by 340 publications

References 85 publications

Petroleum substitution, greenhouse gas emissions reduction and environmental benefits from the development of natural gas vehicles in China

Petroleum substitution, greenhouse gas emissions reduction and environmental benefits from the development of natural gas vehicles in China

Technical-economic aspects of CNG gas usage in buses of urban communication

Turbulent spark-jet ignition in SI gas fuelled engine

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