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Modeling and Diagnostics of Fuel Injection Systems

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "I1: Fuel".

Deadline for manuscript submissions: closed (25 February 2022) | Viewed by 6098

Special Issue Editor


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Guest Editor
Industrial, Electronic and Mechanical Engineering Department (DIIEM), Roma TRE University, Via della Vasca Navale, 79, 00146 Rome, Italy
Interests: fuel injection systems; fluid power; internal combustion engines; biomass energy; energy systems.
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Special Issue Information

Dear Colleagues,

Internal combustion engines evolve rapidly and there is a continuous need to improve technologies, explore new concepts, and question what appears to be consolidated. The injection system is intended to pilot that complex and crucial process of combustion, whose features affect the release of heat and the formation of pollutants. In this scenario, the injection system plays a key role and the characteristics of next-generation internal combustion engines will also depend on this evolution. This Special Issue will focus on all those topics that constitute the "cutting-edge", the frontier of the evolution of injection systems, both in the field of diesel engines and gasoline engines, whether for light applications or heavy.

Both experimental studies and modeling-based studies (LP, three-dimensional, or multidimensional) that take into consideration the typical processes and performances of the injection system or its components are invited. Among the others, particular consideration will be devoted to the following:

  • Use of alternative fuels
  • Unconventional components and solutions (injectors, pumps, pipes, nozzles)
  • Rate of injection and the spray characteristics
  • Innovative techniques of diagnosis and measuring techniques in the field of injection systems
  • Innovative techniques of modeling and simulation in the field of injection systems
  • Mechanical-hydraulic behavior of the injection systems
  • Problems relating to the injection strategy

The selection of papers for this Special Issue will be based on the following:

  • Their innovation;
  • Their pure scientific and applied technology findings;
  • Their new and alternative approaches

Dr. Fulvio Palmieri
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Injection system
  • Fuel spray
  • Rate of injection
  • Experimental techniques and modeling
  • Unconventional fuels
  • Injection strategy and injection system efficiency

Published Papers (2 papers)

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Research

21 pages, 9496 KiB  
Article
Operation Cycle of Diesel CR Injection Pump via Pressure Measurement in Piston Working Chamber
by Ornella Chiavola, Edoardo Frattini, Simone Lancione and Fulvio Palmieri
Energies 2021, 14(17), 5385; https://doi.org/10.3390/en14175385 - 30 Aug 2021
Cited by 4 | Viewed by 2582
Abstract
The paper is devoted to the analysis of the operating cycle of a high-pressure injection pump used in common rail systems. The investigation is based on experimental activities, and it is carried out in a novel pump set-up that allows measurements of the [...] Read more.
The paper is devoted to the analysis of the operating cycle of a high-pressure injection pump used in common rail systems. The investigation is based on experimental activities, and it is carried out in a novel pump set-up that allows measurements of the instantaneous pressure in the piston working chamber. A single plunger pump has been equipped with a piezo-resistive pressure transducer which allows for the measurement of the pressure signal during pump operation on a test rig. The paper describes the experimental set-up, the modified injection pump equipped with the pressure transducer, and the experimental tests carried out. Main results obtained using a standard commercial diesel fuel are discussed at first; secondly, the focus moves on to the use of an alternative fuel (biodiesel) whose features in terms of bulk modulus, viscosity, and density significantly differ from the reference fuel. Based on the characteristics of the pump operating cycle, the fuel suction and delivery processes are analyzed, pointing out how the used fuel type is reflected on them. The investigations are aimed at describing the operating characteristics of the pump, focusing the attention on those features playing a fundamental role on the global efficiency of the pump. The amplitudes of the pump-work phases, the ranges of pressure fluctuations, and the pressure-rise rates are quantified and reported, providing crucial indications for lumped parameter modeling and design activities in the field of current generation high-pressure injection pumps. Full article
(This article belongs to the Special Issue Modeling and Diagnostics of Fuel Injection Systems)
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19 pages, 18019 KiB  
Article
High-Speed Infrared Measurement of Injector Tip Temperature during Diesel Engine Operation
by Alex Gander, Dan Sykes, Raúl Payri, Guillaume de Sercey, Dave Kennaird, Martin Gold, Richard J. Pearson and Cyril Crua
Energies 2021, 14(15), 4584; https://doi.org/10.3390/en14154584 - 29 Jul 2021
Cited by 5 | Viewed by 2769
Abstract
Pre-catalyst engine emissions and detrimental injector deposits have been widely associated with the near-nozzle fluid dynamics during and after the injection events. Although the heating and evaporation of fuel films on the nozzle surface directly affects some of these processes, there are no [...] Read more.
Pre-catalyst engine emissions and detrimental injector deposits have been widely associated with the near-nozzle fluid dynamics during and after the injection events. Although the heating and evaporation of fuel films on the nozzle surface directly affects some of these processes, there are no experimental data for the transient evolution of nozzle surface temperature during typical engine conditions. In order to address this gap in knowledge, we present a non-intrusive approach for the full-cycle time resolved measurement of the surface temperature of production nozzles in an optical engine. A mid-wave infrared high-speed camera was calibrated against controlled conditions, both out of engine and in-engine to account for non-ideal in surface emissivity and optical transmissivity. A custom-modified injector with a thermocouple embedded below the nozzle surface was used to validate the approach under running engine conditions. Calibrated infrared thermography was then applied to characterise the nozzle temperature at 1200 frames per second, during motored and fired engine operation, thus revealing for the first time the effect of transient operating conditions on the temperature of the injector nozzle’s surface. Full article
(This article belongs to the Special Issue Modeling and Diagnostics of Fuel Injection Systems)
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