Block Vibration Measurements for Combustion Diagnosis in Multi-Cylinder Common Rail Diesel Engine
Date Published: 2009-04-20
Paper Number:2009-01-0646
DOI: 10.4271/2009-01-0646
Citation:
Arnone, L., Boni, M., Manelli, S., Chiavola, O. et al., "Block Vibration Measurements for Combustion Diagnosis in Multi-Cylinder Common Rail Diesel Engine," SAE Technical Paper 2009-01-0646, 2009, doi:10.4271/2009-01-0646.
A methodology has been developed by the authors, in which non-intrusive measurements (engine block vibration) are used for diagnostic purposes of combustion process in Diesel engines. A previous paper of the authors has been devoted to demonstrate the direct relationship between in-cylinder pressure and accelerometer signals, when the vibration transducer is placed in sensitive location. Moreover, in the engine block vibration a frequency band in which such a relationship is very strong has been selected.
The aim of this work is to provide a deeper insight into the effects of injection parameters on engine block vibration, in order to investigate the possibility of detecting modification of the in-cylinder pressure evolution by means of the accelerometer signal with the final objective of optimizing the combustion process by means of non-intrusive transducer.
In the paper, the experimental apparatus is at first described; then, the processing technique is presented and results are reported and discussed concerning different settings of injection parameters and different values of engine speed and load.
Purchase more technical papers and save! With TechSelect,
you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.
Learn more >
