Diesel injector internal deposits in High Pressure Common Rail diesel engines

Galante-Fox, Julie M.; Bennett, J.

doi:10.1533/9780857096043.5.157

Cited by 14 publications

(4 citation statements)

References 2 publications

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“…The basic adverse effect of carbon deposits is delivered on fuel injection equipment (tar and coke) and cylinder-piston group elements (sludge). Carbon deposits on fuel supply system elements have various composition and generation mechanisms [7][8][9][10]. The existing repair technique in many cases do not foresee the possibility to prevent increased contamination deposits and comes down basically to elimination of deposits related to de-installation of elements or dismantling of locomotive diesel engine mechanisms.…”

Section: Main Bodymentioning

confidence: 99%

Measures for Resource Saving for Diesel Locomotives

Aulin¹,

Zinkivskyi²,

Anatskyi³

et al. 2018

IJET

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This article discusses the measures for efficient use of fuel and energy resources in the railway industry. The calculation of the initial moment of starting the diesel engine and the necessary position of its crankshaft is made, on the basis of which it is proposed to modernize the locomotive start-up system with a decompressor. These measures are aimed at reducing the dynamic loads of engine components and reducing their wear and tear, as well as failure preventing. A method for the clean-up of fuel systems and the cylinder-piston diesel engine group of diesel locomotives was developed and tested using a special cleaning liquid that dissolves and removes solidified particles from pipelines and tanks. Measures have been proposed on the use of advanced models to test the modernized locomotives that will reduce the duration of the tests, resource and economic costs. The use of advanced testing model involves choosing the level of accuracy of the test results and, consequently, their duration and cost.

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Section: Main Bodymentioning

confidence: 99%

Measures for Resource Saving for Diesel Locomotives

Aulin¹,

Zinkivskyi²,

Anatskyi³

et al. 2018

IJET

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“…The Schwab et al paper established that root causes included the reaction between certain corrosion inhibitors being used by pipeline operators and the sodium contamination that is almost ubiquitous when handling fuel. Galante-Fox et al 17 subsequently identified te orange lacquer type deposits as being based on organic amides, with certain deposit control additives being implicated. However, in both cases fuel solubility of the material being deposited was also seen as a key factor.…”

Section: Diesel Deposit Control Additivesmentioning

confidence: 99%

Additives for Spark Ignition and Compression Ignition engine fuels

Bennett¹

2017

Proceedings of the Institution of Mechanical Engineers, Part D:

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Fuel additives for automotive applications have been in use for almost as long as the automobile has existed. They provide significant benefits, both in making fuels fit for purpose and to deliver protection and performance benefits. Performance benefits can range from protection against degradation, through recovery of lost performance, all the way to enhanced engine function. This has become particularly important with the tension between increasingly stringent long emissions requirements, the encouragement of renewable biofuel content and the drive to improved engine efficiency and reduce fuel consumption. The paper discusses where performance fuel additives provide their benefits and how they are evolving to work with latest generations of fuel and engines, and provides an overview of the current and upcoming industry engine tests for fuels and their additives.

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“…On the other hand, Schwab et al 12 stated that, “in some applications where mono acid lubricity improvers were used, there were no performance issues related to injector deposit formation.” The desulphurisation and refinery process changes carried out to assist in the reduction of emissions caused the loss of lubricity and a reduction in the solubilising potential of the fuel for deposits or their precursors. 13–15 Li et al 16 set out to investigate the effect of a multifunctional additive package on fuel injector deposits. It has been found that even short periods of running with vegetable oil produced a change in the level of emissions of regulated pollutants, which was attributable to the formation of deposits on the tip of the injector.…”

Section: Introductionmentioning

confidence: 99%

Impact of fuel on real diesel injector performance in field test

Stępień

Mazanek

Suchecki

2017

Proceedings of the Institution of Mechanical Engineers, Part D:

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This work assessed the potential impact of diesel fuel complying with the EN 590 standard on real diesel injector performance in a long-term field test. Injector deposit formation has been attributed to diesel fuel instability during storage in relation to fuel injection equipment (FIE) operating conditions. These deposits can occur at different locations within FIE and impact on fuel spray characteristics, causing threats to the proper functioning of the fuel injectors. The long-term field tests were performed with two new vehicles fitted with an advanced common rail (CR) fuel injection system, meeting the requirements of Euro 5. A high quality diesel fuel meeting the requirements of the EN 590 standard was used for both vehicles. A scanning electron microscope with energy dispersive X-ray spectrometry (EDS) and an electron backscatter diffraction (EBSD) detector was used for observation and imaging of external, coking injector deposits around the nozzle fuel-flow holes and internal diesel injector deposits (IDID) in the area of the nozzle needle. An elemental analysis was performed by energy dispersive X-ray spectroscopy analysis (EDX). Evaluation of the macroscopic characteristics revealed that, despite the formation of external and internal injector deposits, there was no measurable loss of flow through the injectors. As a result, while injector deposits have adverse impacts on some injector macroscopic characteristics, they did not cause a significant deterioration of the injectors' operating characteristic and their real performance.

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Diesel injector internal deposits in High Pressure Common Rail diesel engines

Cited by 14 publications

References 2 publications

Measures for Resource Saving for Diesel Locomotives

Measures for Resource Saving for Diesel Locomotives

Additives for Spark Ignition and Compression Ignition engine fuels

Impact of fuel on real diesel injector performance in field test

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