Electric Current Waveform of the Injector as a Source of Diagnostic Information

Krzysztof Więcławski , Jędrzej Mączak , Krzysztof Szczurowski

Abstract

The article discusses the method of evaluation of the fuel injector operation based on the observation of the electric current parameters, which were measured with a current transducer using the Hall effect, during the dosing process. This method relies on comparison of the electric current-related values of the examined injector with the model characteristics, which are representing the properly functioning injector. A model of the fuel injector in the form of the electric current waveform that describes the changes in the electric current and voltage during its work is presented in this article. Complex equations describing the fuel injector model under discussion account for the characteristics of the current variations, with no damage-induced modifications. Due to these, the modeled electric current/voltage waveform mirrors the real conditions. The use of a mathematical model describing the voltage–current phenomena occurring during the injector operation allows determining the actual beginning and duration of the injection. The model can also be used to develop new injector diagnostic methods that can be implemented in the engine controller (ECU).
Author Krzysztof Więcławski (FACME / IV)
Krzysztof Więcławski,,
- Institute of Vehicles
, Jędrzej Mączak (FACME / IAE)
Jędrzej Mączak,,
- Institute of Automotive Engineering
, Krzysztof Szczurowski (FACME / IAE)
Krzysztof Szczurowski,,
- Institute of Automotive Engineering
Journal seriesSensors, [SENSORS-BASEL], ISSN 1424-8220, e-ISSN 1424-3210
Issue year2020
Vol20
No15
Pages1-15
Publication size in sheets0.7
Keywords in English injector; diagnostics; inductance
ASJC Classification1303 Biochemistry; 1602 Analytical Chemistry; 2208 Electrical and Electronic Engineering; 3107 Atomic and Molecular Physics, and Optics
DOIDOI:10.3390/s20154151
URL https://www.mdpi.com/1424-8220/20/15/4151
Languageen angielski
File
sensors-20-04151-1.pdf 2.68 MB
Score (nominal)100
Score sourcejournalList
ScoreMinisterial score = 100.0, 07-09-2020, ArticleFromJournal
Publication indicators WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2016 = 1.393; WoS Impact Factor: 2018 = 3.031 (2) - 2018=3.302 (5)
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