Statistical modeling to determine resonant frequency information present in combustion chamber pressure signals
Bodisco, Timothy A. & Brown, Richard J. (2010) Statistical modeling to determine resonant frequency information present in combustion chamber pressure signals. In Mallinson, G.D. & Cater, J.E. (Eds.) Proceedings of the 17th Australasian Fluid Mechanics Conference, Australasian Fluid Mechanics Society, University of Auckland, pp. 1-4.
A statistical modeling method to accurately determine combustion chamber resonance is proposed and demonstrated. This method utilises Markov-chain Monte Carlo (MCMC) through the use of the Metropolis-Hastings (MH) algorithm to yield a probability density function for the combustion chamber frequency and find the best estimate of the resonant frequency, along with uncertainty. The accurate determination of combustion chamber resonance is then used to investigate various engine phenomena, with appropriate uncertainty, for a range of engine cycles. It is shown that, when operating on various ethanol/diesel fuel combinations, a 20% substitution yields the least amount of inter-cycle variability, in relation to combustion chamber resonance.
Impact and interest:
Citation countsare sourced monthly fromand citation databases.
These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.
Citations counts from theindexing service can be viewed at the linked Google Scholar™ search.
Full-text downloadsdisplays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.
|Item Type:||Conference Paper|
|Keywords:||Statistical Modeling, Combustion Chamber, Internal Combustion Engines, Spectral Analysis, MCMC, In-cyliner Pressure|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300)|
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering|
|Copyright Owner:||Copyright 2010 Please consult the authors|
|Deposited On:||15 Oct 2010 09:35|
|Last Modified:||01 Mar 2012 10:05|
Repository Staff Only: item control page