Spray Characteristics of DME-LPG Blended Fuel in a High-Pressure Diesel Injection System

Lee, Donggon; Roh, Hyun Gu; Bang, Seokhwan; Lee, Chang Sik

doi:10.4271/2013-01-0105

Cited by 3 publications

(8 citation statements)

References 9 publications

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“…Although the spray size was increased significantly for all the tested fuels, the increment of both spray penetration and spray size is much more pronounced for diesel. As mentioned in a number of studies, the liquid penetration under evaporating/burning conditions is significantly affected by the fuel properties. − As observed from Table , both ABE100 and B100 feature a much lower boiling point, higher vapor pressure, and lower viscosity than D100, which leads to enhanced vaporization and atomization and thus shorter penetration and a narrower jet body. The reason why this behavior is only obvious under lower ambient temperature is because the differences in physical properties of the fuels are amplified under low temperature relative to those at high temperature.…”

Section: Resultsmentioning

confidence: 95%

Spray and Combustion Characteristics of Neat Acetone-Butanol-Ethanol, n-Butanol, and Diesel in a Constant Volume Chamber

et al. 2014

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Intermediate product of biobutanol production, acetone-butanol-ethanol (ABE) as an alternative fuel has drawn increasing attention in recent years due to its potential to eliminate various production costs. In this work, neat acetone-butanolethanol (ABE) with a component volumetric ratio of 3:6:1, n-butanol, and neat diesel were studied in a preburn type constant volume chamber with optical access. The ambient temperature and oxygen ranged from 800 to 1200 K and 21% to 11%, respectively, covering both conventional and low temperature combustion (LTC) regimes. Time resolved images of the spray and natural flame luminosity (indicator of soot) were captured by a high speed camera coupled with a copper vapor laser beam. The images show that the flame lift-off length and liquid penetration of n-butanol and ABE are much longer and shorter, respectively, than that of diesel under all tested conditions. This results in a longer "gap" between the liquid spray and the flame in ABE and n-butanol combustion that provides more space and time for the droplets to evaporate and mix with the ambient air, which is expected to decrease the local equivalence ratio at the combustion region. Indeed, the natural flame luminosity of ABE and n-butanol is reduced significantly under all tested conditions compared to that of diesel. For all the tested fuels, especially ABE, the combustion duration decreases with the reduction of ambient temperature due to a stronger premixed combustion, while it increases with the reduction of oxygen concentration due to the dilution effect. Therefore, ABE has a high potential to reduce soot emissions when used in diesel engines, but it would also suffer from combustion phasing retardation like butanol under LTC conditions with high EGR.

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Section: Resultsmentioning

confidence: 95%

Spray and Combustion Characteristics of Neat Acetone-Butanol-Ethanol, n-Butanol, and Diesel in a Constant Volume Chamber

et al. 2014

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“… 8 Besides containing oxygen, DME molecular structure also lacks a C–C bond, which potentially promotes the low content of soot emissions, as this is the main consideration for a clean fuel. 5 …”

Section: Properties Of Dmementioning

confidence: 99%

“…Because of the high cetane number, DME is considered a promising alternative fuel which when burned does not produce emissions of particulate matter and toxic gases. 5 …”

Section: Introductionmentioning

confidence: 99%

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Dimethyl Ether as the Next Generation Fuel to Control Nitrogen Oxides and Particulate Matter Emissions from Internal Combustion Engines: A Review

Putrasari¹

2021

ACS Omega

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Dimethyl ether (DME) is a new generation fuel produced from natural gas and coal. This fuel can be used directly to a conventional internal combustion (IC) engine without any significant modifications. The main advantage of DME combustion in IC engines is the low NO x and particulate emissions compared with the fossil liquid fuel. Thus, the usage of DME in IC engines is potentially to improve engine efficiency and reduce emissions in the future with minimum attempts. This paper offers a comprehensive review of some topics related to DME as an alternative fuel for IC engines and efforts to increase its utilization to meet high efficiency and low emissions regulations in the future.

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“…The current demand in consumer market for dual-powered vehicles with particular emphasis on the LPG-fuelled cars, forced the top manufacturers of passenger vehicles to introduce into their offer the drive units factoryfitted with LPG systems (Cieslik et al, 2014). Tests on LPG fuel (injection of liquid or gaseous form (Mizushima et al, 2009)) suggest the possibility of its use both in spark-ignition engines with indirect (Lawankar, 2013) or direct injection (Park et al, 2013a;Park et al, 2013b) and in diesel engines (Fontaras et al, 2012) indicating good properties of its dispersion (Lee et al, 2013).The choice of fuel ensues first and foremost from the economic calculation and from the requirements of the engines, in which it is to be applied. Decreasing world's liquid fuel sources and the need to reduce emissions into the atmosphere of exhaust emission, contribute to the search for alternative sources of power for combustion engines.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic indexes of real driving conditions of gasoline and LPG fuelled engine

Pielecha

Cieślik

Bueschke

et al. 2016

AoT

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The aim of the conducted tests was to assess the method of delivering additional fuel dose in transient conditions and to determine the impact of this additional fuel dose on the engine operation conditions. The experimental tests were conducted in typical urban driving conditions. In the study was used system for indicating and acquisition of fast-varying data; the combustion pressure in the first cylinder of the 3-cylinder engine with spark ignition was measured, as well as the voltage on the petrol injectors and the liquefied petroleum gas injector. The post-processing analysis enabled defining engine operation indexes taking into account the aforementioned parameters. Also indicated mean effective pressure, the heat release rate and the amount of the heat released were analysed. In addition, the indexes of transient conditions of engine operation per one cycle were specified: change of the engine speed, of the maximum combustion pressure, of the indicated mean effective pressure and change of the heat release rate.

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Spray Characteristics of DME-LPG Blended Fuel in a High-Pressure Diesel Injection System

Cited by 3 publications

References 9 publications

Spray and Combustion Characteristics of Neat Acetone-Butanol-Ethanol, n-Butanol, and Diesel in a Constant Volume Chamber

Spray and Combustion Characteristics of Neat Acetone-Butanol-Ethanol, n-Butanol, and Diesel in a Constant Volume Chamber

Dimethyl Ether as the Next Generation Fuel to Control Nitrogen Oxides and Particulate Matter Emissions from Internal Combustion Engines: A Review

Thermodynamic indexes of real driving conditions of gasoline and LPG fuelled engine

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