Analysis of Failure Mode and Effect on Overheating of Automotive Engines in Passenger Cars: A Case Study

Abstract

The overheating of engines in passenger cars is a recurring issue in the Brazilian scenario in the life of many users of these vehicles, causing various troubles. It not only affects the lifespan of engine components but can also induce serious accidents such as fires. This case study aims to apply the management method based on the Failure Mode and Effects Analysis (FMEA) tool to mitigate or eliminate overheating. Firstly, the definition and an example of FMEA will be stated and them will be explored manufacturer handbooks talking about causes of overheating in the context of engine preservation. Finally, a practical case study was performed in an automotive workshop, applying the FMEA tool to reinforce the theoretical approach, evidencing that the four biggest causes of overheating in automotive engines are: irregular coolant, irregular thermostatic valve, incorrect ignition timing and irregular lubricating oil.