On-Board Spark Plug Center Electrode Temperature Measurement with Wireless Data Transmission

Anton Tilz*, David Johannes Pommerenke, Ansel James Higgs, Andreas Wimmer, Michael Engelmayer, Wolfgang Fimml, Alvaro Diez, Marc Klawitter

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


To increase reliability and the maintenance interval of an internal combustion engine while operating it with the lowest possible emissions, spark plug wear must be reduced. In this context, information about the spark plug center and the ground electrode temperature is key. Several measurement devices have been developed that measure the temperature of spark plug electrodes. The great challenge is to measure the temperature of the center electrode; on the one hand, the measurement device must be insulated and capable of withstanding the high voltage of the ignition system, and on the other hand, the device should not influence the ignition system. All previously studied devices presented in this paper have in common that major reconstruction of the ignition system and/or spark plugs whose design is very different from the standard engine spark plug were necessary. Other systems were presented in which most parts of the ignition system were completely different from the standard parts. The disadvantages of these systems are that great effort is required to apply the measurement system and that engine behavior and the spark plug temperature differ from that of the standard engine. This paper presents a measurement device and setup to obtain the spark plug center electrode temperature in standard engines; both the spark plug and the ignition system of the standard engine were used with minor customization. The data transmission is wireless in order to protect the test bed temperature data acquisition system from the high voltage of the ignition system and to minimize the influence of the modification on the ignition system.
Original languageEnglish
Article number2022-02-0565
Number of pages12
JournalSAE Technical Papers
Issue number2022
Publication statusPublished - 29 Mar 2022
Event2022 WCX SAE World Congress Experience: WCX 2022 - Detroit, United States
Duration: 5 Apr 20227 Apr 2022

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering
  • Automotive Engineering


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