Influence of Temperature on Alternator Charging Current

Norbert Pedryc , Sławomir Francik , Honorata Dąbrowska , Tomasz Hebda


At present, manufacturers of charging systems components emphasize the importance of quality and thermal resistance of both mechanical and electronic elements of an alternator. The use of materials with lower thermal expansion, greater resistance to thermal operating conditions, and the increasingly frequent use of forced air cooling with dual fan housings inside the enclosure are the main course of actions employed to prevent the reduction of charging current in alternators. The paper presents an analysis of the experimentally obtained data aimed at plotting the characteristic curves illustrating the decrease in the efficiency of the charging systems. The relationship between the rotation speed of the alternator rotor and the load generated by the on-board receivers has been explained. For testing, alternators with rated currents of 70, 90, and 120 A were used, produced by various manufacturers. The obtained results confirm the validity of the research and indicate decrease in charging performance under the actual operating conditions in the engine compartment.
Author Norbert Pedryc (FoPaPE / DoMEaA)
Norbert Pedryc,,
- Department of Mechanical Engineering and Agrophysics
, Sławomir Francik (FoPaPE / DoMEaA)
Sławomir Francik,,
- Department of Mechanical Engineering and Agrophysics
, Honorata Dąbrowska (UAK)
Honorata Dąbrowska,,
- University of Agriculture in Krakow
, Tomasz Hebda (FoPaPE / DoMEaA)
Tomasz Hebda,,
- Department of Mechanical Engineering and Agrophysics
Journal seriesSAE Technical Papers, ISSN 0148-7191, (N/A 40 pkt)
Issue year2020
Publication size in sheets0.5
Keywords in EnglishAlternator, charging current, voltage
ASJC Classification2203 Automotive Engineering; 2209 Industrial and Manufacturing Engineering; 2213 Safety, Risk, Reliability and Quality; 2310 Pollution
Languageen angielski
Score (nominal)40
Score sourcejournalList
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2018 = 0.429
Citation count*
Additional fields
FinansowanieThis research was funded by the Ministry of Science and Higher Education of Poland.
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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