Electric current characteristics of the injector generating fuel doses
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Institute of Vehicles, Warsaw University of Technology.
Institute of Vehicles, Warsaw University of Technology
Krzysztof Więcławski   

Institute of Vehicles, Warsaw University of Technology., Narbutta, 84, 02-524 Warszawa, Polska
Online publish date: 2018-10-26
Publish date: 2018-10-10
Submission date: 2018-06-02
Final revision date: 2018-09-30
Acceptance date: 2018-10-01
Diagnostyka 2018;19(4):59–64
In this article, the proposal for modelling the gas (fuel) injector based on observations of changes in the current during operation of the needle is presented. The aim of this work is indicating that the dosage characteristics can be mapped by means of the current characteristics. Moreover, observation of the current allows for determining the actual position of the needle. The time of the real fuel flow and the injector phase position can be determined with a microsecond resolution. The injector core inductance is a constant quantity but as a result of the needle movement and change in the permeability, inductance of the core varies depending on the needle position. These quantities, closely related to the current flowing through the coil, are described by means of differential equations resulting from the Kirchhoff’s law, due to which changes taking place can be substantiated. Control of the flux enables the precise controlling of the injector in the actual time, thanks to the employment of fast analogue-digital converters and phase are taken into consideration.
Perryman L, Baker NP, Martin SJ, Martin AP. Drive circuit for injector arrangement and diagnostic method. Delphi Technologies Holding. 23 June 2011. Espacenet.
Wierzbicki S, Śmieja M, Grzeszczyk R. Zintegrowane sterowanie stanowiskiem badawczym silników o ZS w środowisku fast prototyping. Combustion Engines. 2013; 3(154): 536-541.
Czarnigowski J. Theoretical and empirical study modeling pulse gas injector. Copyright by Lublin University of Technology. 2012.
Jukl M, Dostál P, Čupera J. Analysis of engine parameters at using diesel – LPG and diesel CNG mixture in compression – ignition engine. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2014. 62(1):125-130.
Czarnigowski J. Effect of calibration method on gas flow through pulse gas injector: Simulation tests. Combustion Engines, 2013; 154(3): 383-392.
Czarnigowski J. The model of pulse injector opening lag time. Combustion Engines. 2013; 154(3): 393-398.
Jiang C, Xu H, Srivastava D, Ma X, Dearn K, Cracknell R, Krueger-Venus J. Effect of fuel injector deposit on spray characteristics, gaseous emissions and particulate matter in a gasoline direct injection engine. Applied Energy. 2017:203:390-402; http://dx.doi.org/10.1016/j.ap....
Cammalleri M, Pipitone E, Beccari S, Genchi G. A mathematical model for the prediction of the injected mass diagram of a S.I. engine gas injector. Journal of Mechanical Science and Technology 2013;27(11): 253-365.http://dx.doi.org10.1007/s1220....
Borawski A. Simulation studies of LPG injector used in 4th generation Installations. Combustion Engines. 2015; 160(1): 49-55.
Krogerus TR, Huhtala KJ. Diagnostics and identification of injection duration of common rail diesel injectors. Open Engineering. 2018, 8(1):1-6. http://dx.doi.org/10.1515/eng-....
Farooqi QR, Snyder B, Anwar S. Real time monitoring of diesel engine injector waveforms for accurate fuel metering and control. Journal of Control Science and Engineering. 2013;2013:5. http://dx.doi.org/10.1155/2013....
Czimmek P, Wright D. A method of using inductance for determining the position of an armature in an electromagnetic solenoid. 1999-07-13. US6657847B1 patent USA, base ESPACENET.
Szpica D. Comparative analysis of the characteristics of a low-pressure gas-phase injector. Flow Measurement and Instrumentation. 2017; 58:74-86.
Armas O, Mata C, Martinez-Martinez S. Effect of diesel injection parameters on instantaneous fuel delivery using a solenoid-operated injector with different fuels. Revista Facultad De Ingenieria-Universidad De Antioquia. 2012; 64:9-21.
Warczek J. The application of PCA to develop a vibration pattern of the LPG injector. Conference materials – XVII International Technical Systems Degradation Conference. 2018.