Diesel Fuel Composition Effect on Lubricity

Gomes, Helineia Oliveira; Rocha, Mauro Iurk; Silva, Raissa Cotta Ferreira da

doi:10.4271/2003-01-3568

Cited by 5 publications

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This problem has been eliminated in modern FIE which relies on the fuel for lubrication. This in itself causes other concerns such as the influence of fuel composition on lubricity [46,47,48] and requires careful consideration when formulating fuels and fuel specifications.…”

Section: Introductionmentioning

confidence: 99%

Sodium Contamination of Diesel Fuel, its Interaction with Fuel Additives and the Resultant Effects on Filter Plugging and Injector Fouling

Barker¹,

Cook²,

Richards³

2013

SAE Int. J. Fuels Lubr.

View full text Add to dashboard Cite

Diesel fuel distilled from crude oil should contain no greater than trace amounts of sodium. However, fuel specifications do not include sodium; there is a limit of five parts per million for the amount of sodium plus potassium in fatty acid methyl esters (FAME) used as biodiesel. Sodium compounds are often used as the catalyst for the esterification process for producing FAME and sodium hydroxide is now commonly used in the refining process to produce ultra-low sulphur diesel (ULSD) fuel from crude oil. Good housekeeping should ensure that sodium is not present in the finished fuel. A finished fuel should not only be free of sodium but should also contain a diesel fuel additive package to ensures the fuel meets the quality standards introduced to provide reliable operation, along with the longevity of the fuel supply infrastructure and the diesel engines that ultimately burn this fuel. There has recently been an upsurge in reported field problems due to fouling of the fuel injection system in modern diesel engines. This can take the form of deposits in the fuel filters or within the fuel injectors themselves. Recent work proposed a mechanism whereby sodium contaminated fuel can undergo adverse reactions between the sodium compounds and fuel additives leading to the formation of material that can impede the operation of diesel fuel injectors. This paper presents new work carried out to enhance the understanding of this mechanism and demonstrates that the fate of any sodium contaminant is highly dependent on (i) the fuel additives present in the fuel (ii) the amount of water in the system, (iii) potentially the intensity of fuel/water mixing and (iv) the identity of the sodium salt involved in the reaction. This can lead to sodium accumulating in the water bottoms, forming sodium compounds that go on to plug fuel filters or which may cause injector fouling. The data found may explain the variation in engine test data regarding sodium induced fouling reported in the recent literature.

show abstract

Section: Introductionmentioning

confidence: 99%

Sodium Contamination of Diesel Fuel, its Interaction with Fuel Additives and the Resultant Effects on Filter Plugging and Injector Fouling

Barker¹,

Cook²,

Richards³

2013

SAE Int. J. Fuels Lubr.

View full text Add to dashboard Cite

show abstract

“…Introduction of low sulphur diesel fuels resulted in fuel injection pumps and distributor pumps failures, particularly in Sweden [2]. Low sulphur fuels possess poorer lubricity than nondesulphurised, mainly due to removal of polar oxygen and nitrogen containing compounds [3,4].…”

Section: Literature Reviewmentioning

confidence: 99%

Possible application of animal fat as engine fuel - lubricity aspects

Piaszyk¹,

Wyszyński²

2011

Combustion Engines

View full text Add to dashboard Cite

Thepaperpresents results of animalfat lubricity testperformed at highfrequency reciprocating rig (HFRR). Impact of test temperature on wear scar diameter (WSD) is shown. Results for animal fat are compared with those for mineral diesel fuel (ULSD). Obtained WSD prooved excellent lubricating properties of animal fat. Laboratory test results are backed up with engine trials where two sets offuel pumps were tested on a large reciprocating engine. Animal fat can be used asfuelfor engines -when appropriatefiltrationprocess is implemented.

show abstract