This Book is a guide to understand the complex vibration and noise characteristics of Diesel Engines and how to use them in extracting their condition related information. First, it gives general introduction to the maintenance and condition monitoring science, engines common failure modes, vibro-acoustics sources and methods used to assess its condition. It also explains instrumentations for measuring engines operating parameters. Second, time domain analysis techniques and methods relied on the amplitudes of the frequency components of the measured signals are discussed. The emitted noise...