Diesel fuel filtration problems with modern common rail injection systems

Jocanović, Mitar; Karanović, Velibor; Knežević, Darko; Orošnjak, Marko

doi:10.5937/vojtehg65-11577

Cited by 7 publications

(5 citation statements)

References 6 publications

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“…1. Bosch CRI3-16 fuel injector design: own study based on [20] This type of fuel injector belongs to the third generation CRS3 (Common Rail System) systems, operating at work-ing pressure up to 160 MPa [9]. Figure 1 shows the most important elements of the internal structure, specifying the control valve assembly and the hydraulic amplifier.…”

Section: Test Objectmentioning

confidence: 99%

Problems of regeneration of modern piezoelectric fuel injectors

Stoeck¹

2022

Combustion Engines

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The paper presents a method of testing piezoelectric fuel injectors in modern common rail systems, which allows them to be repaired almost to the full extent. The obtained results indicate that this process can be effectively carried out, even taking into account the existing technological limitations. The most important stages of the implemented activities are specified, first of all the scope of required maintenance activities in the pre- and post-assembly stages, as well as the types of diagnostic tests carried out on separate test benches. Although the presented analysis concerns a specific example, individual conclusions and observations can be applied to fuel injectors from other manufacturers, in which the actuator is not replaceable.

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Section: Test Objectmentioning

confidence: 99%

Problems of regeneration of modern piezoelectric fuel injectors

Stoeck¹

2022

Combustion Engines

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“…It should be concluded, therefore, that the malfunction was due only to the presence of impurities and persistent deposits that were removed during the thermo-chemical washing on the test bench. In such cases, it is suggested to replace the fuel filter, as well as rinsing the tank and the entire supply system in the vehicle [23].…”

Section: A C C E P T E Dmentioning

confidence: 99%

Simplified methodology for testing common rail piezoelectric injectors taking into account reference characteristics

2021

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The article presents the methodology of testing Continental/Siemens VDO piezoelectric injectors. To determine the correctness of their operation, the reference characteristics were used, which, due to the lack of guidelines from the manufacturer, constituted the only reference base for the obtained expenses and the intensity of fuel overflows. Simultaneously, the phase of the active experiment was simplified by limiting the number of measuring points, and then estimating the missing data using the Aitken iterative technique. Automation of the calculation process was obtained thanks to the proprietary numerical algorithm, whose formulas were introduced into a standard spreadsheet.

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“…Unfortunately, problematic situations arise where improper injector operation is observed on the engine, despite meeting rigorous manufacturer criteria during testing. A solution can be extended diagnostics, involving the creation of a fuel delivery characteristic across the full range of working pressures and injection times (nozzle opening) [6,9,17]. It is essential to emphasize that this is a significantly more time-consuming process and is only available on advanced test benches, such as STPiW3 [12].…”

Section: Introductionmentioning

confidence: 99%

Diagnostic method for a piezoelectric injector using the Newton-Cotes formula

Stoeck

2023

Combustion Engines

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The article presents an original method for regenerating common rail injectors, which involves extending the standard diagnostic procedure with a phase of analytical calculations. These calculations were conducted based on the closed Newton-Cotes formula (commonly known as the trapezoidal rule), allowing for the estimation of the resulting fuel injection surface areas and their comparison with the manufacturer's reference. The presented example demonstrates that the proposed solution is particularly useful in challenging situations where a clear assessment of the injector's technical condition is difficult. Several other advantages have been highlighted, making this method suitable for application in laboratory and workshop conditions.

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Diesel fuel filtration problems with modern common rail injection systems

Cited by 7 publications

References 6 publications

Problems of regeneration of modern piezoelectric fuel injectors

Problems of regeneration of modern piezoelectric fuel injectors

Simplified methodology for testing common rail piezoelectric injectors taking into account reference characteristics

Diagnostic method for a piezoelectric injector using the Newton-Cotes formula

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