The authors developed an on-board lubricating oil condition monitoring system for diesel-powered vehicles. This system consists of an oil analyzer and a date logger capable of communicating with an external terminal via Wi-Fi. The performance of the system was evaluated using a bench test which artificially simulates internal engine wear and an on-track test using a commercial vehicle. The results showed that the monitoring system operated normally and could detect an increase in iron powder concentration in the engine oil.
SUZUMURA et al. (2026) studied this question.