In-cylinder pressure and inter-cycle variability analysis for a compression ignition engine : Bayesian approaches

Bodisco, Timothy Alexis (2013) In-cylinder pressure and inter-cycle variability analysis for a compression ignition engine : Bayesian approaches. PhD by Publication, Queensland University of Technology.

Abstract

This thesis introduced Bayesian statistics as an analysis technique to isolate resonant frequency information in in-cylinder pressure signals taken from internal combustion engines. Applications of these techniques are relevant to engine design (performance and noise), energy conservation (fuel consumption) and alternative fuel evaluation. The use of Bayesian statistics, over traditional techniques, allowed for a more in-depth investigation into previously difficult to isolate engine parameters on a cycle-by-cycle basis. Specifically, these techniques facilitated the determination of the start of pre-mixed and diffusion combustion and for the in-cylinder temperature profile to be resolved on individual consecutive engine cycles. Dr Bodisco further showed the utility of the Bayesian analysis techniques by applying them to in-cylinder pressure signals taken from a compression ignition engine run with fumigated ethanol.

Impact and interest:

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ID Code: 62064
Item Type: QUT Thesis (PhD by Publication)
Supervisor: Brown, Richard & Low Choy, Sam
Additional Information: An embargo until 22nd August 2015 has been granted by the Faculty.
Keywords: Internal combustion engine, In-cylinder pressure, Inter-cycle variability, Combustion resonance, Resonant frequency, Spectral analysis, Ignition delay, Bayesian analysis, Markov-chain Monte Carlo, Alternative fuel
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Institution: Queensland University of Technology
Deposited On: 30 Aug 2013 01:37
Last Modified: 03 Sep 2015 04:43

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