Diagnosing a Car Engine Fuel Injectors' Damage

Abstract

Acombustion engine during operation generates vibration and acoustic phenomena. Vibroacoustic phenomena comprise information concerning the correctness of engine work and the condition of its each element. Many vibroacoustic phenomena sources occur in such engine, what causes a disruption of diagnostic information. All over the world attempts continue to use vibroacoustic phenomena to diagnose the condition of machines, also of combustion engines of motor vehicles. The development of methods for conversion of vibroacoustic signals and diagnostic signals allows expanding in the future the use of an on-board diagnostic system OBD in vehicles. The development of a complex diagnostic system is especially interesting, which would be able to diagnose the technical condition of particular elements of a car engine, using the information based on vibroacoustic signals. This article presents trials of using vibratory signals, generated by a four-cylinder combustion engine of 1.6 dm3capacity, for diagnostics of a fuel injector damage. © Springer-Verlag Berlin Heidelberg 2013.