Failure of fuel injectors in a medium speed diesel engine operating on bio-oil

Galle, Jonas; Verhelst, Sebastian; Sierens, Roger; Pérez, Leonardo Goyos; Castañeda, Rafael Jiménez; Verhaege, Marc; Vervaeke, Lieven; Bastiaen, Marc

doi:10.1016/j.biombioe.2012.01.041

Cited by 32 publications

(16 citation statements)

References 17 publications

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“…The different reasons were plastic deformation and clogging of injector's passage, microcracks, erosion and cavitation. It was also observed that physical and chemical composition of the fuel also places a role in the failure of injectors [13]. Author has concluded that with increased accuracy in the modeling of injector the full details of injector are crucial when comparing with the experimental results [14].…”

Section: In -Cylinder Spraymentioning

confidence: 99%

A Review on Diesel Injectors Modeling, Spray and Cavitation

Veeranjaneyulu¹,

Tjprc²

2018

IJMPERD

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Section: In -Cylinder Spraymentioning

confidence: 99%

A Review on Diesel Injectors Modeling, Spray and Cavitation

Veeranjaneyulu¹,

Tjprc²

2018

IJMPERD

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“…Lubricant additives in the fuel can contribute to metal uptake, especially if the additives are acids [6]. The temperature of the needles is directly linked to the problem of storage of materials, combustion arrangements and air management resulting in higher temperatures at the tip of the needle, which promotes deposits [7].…”

Section: Formation Of Depositsmentioning

confidence: 99%

“…Cavitation can determine the quantity of coke to be deposited on the needle. From research, it has been found that with the increase of cavitation decreases the erosion of the inner hole and the taper nozzle formation [6]. However, needles with high efficiency with improved dimensional tolerances with a needle entry hole, the tapered holes cause reduction or elimination of cavitation within the flow needle.…”

Section: Formation Of Depositsmentioning

confidence: 99%

Failure in Fuel Injector Nozzles Used in Diesel Engines

Macêdo¹,

Oliveira²,

Campo³

et al. 2015

JMEA

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This paper aims to conduct a study of the problems associated with the wear of the needles and fuel injection nozzles utilized in diesel engines. The wear found on the needles is mainly associated to impurities in the fuel oil and microcavitation occurred due to high pressure in the phase of the air compression for combustion of the combustible fluid. These pressures associated with the temperature and the fluid velocity results in the occurrence of vaporization, which releases shock waves that cause damage to the affected surface. The impurities solid particles from the fuel oil cause problems inside the nozzles as obstruction of the holes and wear on the needle tip and nozzle seat surface. These failures affect in the atomization of the fuel, since the deterioration of the internal passages of the nozzles interferes in the spray formation and in the end passage of the fluid. For the execution of this study it will be used digital microscopic analysis in specimens that suffered damage, in order to investigate the effects of fuel property, and the temperature conditions and pressure in the formation of the wear on the needles and injector nozzle.

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“…However, this approach leads to several operational issues in the engines upon long-term usage. Vegetable oils have high viscosity, poor volatility and a polyunsaturated character, which adversely affects their performance as alternate diesel fuels (Agarwal, 2007;Galle et al, 2012). High viscosity of vegetable oil leads to inefficient pumping and poor spray formation with larger droplet size distribution.…”

Section: Straight Vegetable Oilsmentioning

confidence: 99%

“…Therefore air and fuel are not optimally mixed and combustion remains incomplete in the engine combustion chamber, leading to pollution formation. Low volatility of vegetable oils and their ability to polymerize (due to unsaturation) leads to formation of undesirable carbon deposits in the combustion chamber, injector coking and piston ring sticking (Agarwal, 2007;Galle et al, 2012), which have very serious consequences in the engine. To eliminate these issues, different processes have been developed so as to make these oils adapt to modern engines.…”

Section: Straight Vegetable Oilsmentioning

confidence: 99%

Biofuels and the Hybrid Fuel Sector

Ágarwal¹

2015

Proceedings of the Indian National Science Academy

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To enable India to cope with the predictable and challenging situation of a scarcity of petroleum fuels for surface transport in the future, we examine and evaluate in this study potential alternatives that can ensure adequate energy for the transport sector with acceptable environment implications. These alternatives can be broadly categorized into three groups from the perspective of planning a smooth transition from a conventional petroleum fuel-based transport system to sustainable energy alternatives. The first group includes non-conventional fossil-based resources such as compressed natural gas (CNG), liquefied petroleum gas (LPG), methane from coal beds and gas hydrates, shale oil, shale gas, etc. Use of these resources could provide energy security but cannot guarantee environmental benefits. The second group includes first generation biofuels (alcohol and biodiesel), and biomass-to-liquid (BTL) fuels. These fuels are renewable but their current production methods and base feedstock do not appear promising enough to provide for a large-scale supply of fuel in a sustainable manner. The third group includes second generation biofuels and hydrogen. The feasibility of large-scale hydrogen production from renewable resources holds promise for scalable implementation and sustainability in the future but this would require huge technological challenges to be overcome. This study describes the potential of this proposed fuel resource scenario for transport fuels and discusses the technological challenges that would have to be addressed for its large-scale implementation.

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Failure of fuel injectors in a medium speed diesel engine operating on bio-oil

Cited by 32 publications

References 17 publications

A Review on Diesel Injectors Modeling, Spray and Cavitation

A Review on Diesel Injectors Modeling, Spray and Cavitation

Failure in Fuel Injector Nozzles Used in Diesel Engines

Biofuels and the Hybrid Fuel Sector

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