CONTROLLING A DIESEL ENGINE WITH ENGINE MANAGEMENT BASED ON STRUCTURE-BORNE SOUND

M. Decker, K. Hintz, J. Nobis, C. Gühmann

Abstract

An engine management system based on cylinder pressure provides the means to optimize, control and monitor the release of heat in any individual cylinder. The aim here is to reduce the resultant emissions as well as their scatter band. The paper demonstrates the relationships between structure-borne sound signals and cylinder-pressure signals using Wigner-Ville transformation. Subsequent feature extraction provides the capability of extracting features of combustion and injection that can be used in engine management. This makes it possible to replace cost-intensive cylinder-pressure sensor systems with structure-borne sound sensors that cost less and are more robust. Discourse concludes by presenting the results of engine management based on structure-borne sound and provides an outlook of further work.

Keywords

signal processing, structure-borne sound, diesel engine, engine management based on structure-borne sound

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IMEKO-WC-2012-TC22-O12.pdf

DOI

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IMEKO TC

TC22 - Vibration Measurement

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