Experimentally induced diesel engine injector faults and some preliminary acoustic emission signal observations


Autoria(s): Lowe, David; Wu, Weiliang; Tan, Andy
Data(s)

2011

Resumo

Diesel engine fuel injector faults can lead to reduced power, increased fuel consumption and greater exhaust emission levels and if left unchecked, can eventually lead to premature engine failure. This paper provides an overview of the Diesel, or compression ignition combustion process, and of the two basic fuel injector nozzle designs used in Diesel engines, namely, the pintle-type and hole-type nozzles. Also described are some common faults associated with these two types of fuel injector nozzles and the techniques previously used to experimentally simulate these faults. This paper also presents a recent experimental campaign undertaken using two different diesel engines whereby various fuel injector nozzle faults were induced into the engines. The first series of tests was undertaken using a turbo-charged 5.9 litre; Cummins Diesel engine whist the second series of tests was undertaken using a naturally aspirated 4 cylinder, 2.216 litre, Perkins Diesel engine. Data corresponding to different injector fault conditions was captured using in-cylinder pressure, and acoustic emission transducers along with both crank-angle encoder and top-dead centre reference signals. Using averaged in-cylinder pressure signals, it was possible to qualify the severity of the faults whilst averaged acoustic emission signals were in turn, used as the basis for wavelets decomposition. Initial observations from this signal decomposition are also presented and discussed.

Formato

application/pdf

Identificador

http://eprints.qut.edu.au/46000/

Relação

http://eprints.qut.edu.au/46000/2/46000.pdf

http://www.wceam2011.com/home

Lowe, David, Wu, Weiliang , & Tan, Andy (2011) Experimentally induced diesel engine injector faults and some preliminary acoustic emission signal observations. In World Congress on Engineering Asset Management, 3-5 October 2011, Cincinnati, USA. (In Press)

Direitos

Copyright 2011 (please consult the authors).

Fonte

CRC Integrated Engineering Asset Management (CIEAM); Faculty of Built Environment and Engineering; School of Engineering Systems

Palavras-Chave #090200 AUTOMOTIVE ENGINEERING #091300 MECHANICAL ENGINEERING #Diesel engine #Injectors #Faults #Acoustic emission
Tipo

Conference Paper