کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
560711 | 1451889 | 2012 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Bayesian models for the determination of resonant frequencies in a DI diesel engine Bayesian models for the determination of resonant frequencies in a DI diesel engine](/preview/png/560711.png)
A time series method for the determination of combustion chamber resonant frequencies is outlined. This technique employs the use of Markov-chain Monte Carlo (MCMC) to infer parameters in a chosen model of the data. The development of the model is included and the resonant frequency is characterised as a function of time. Potential applications for cycle-by-cycle analysis are discussed and the bulk temperature of the gas and the trapped mass in the combustion chamber are evaluated as a function of time from resonant frequency information.
► Propose the use of Bayesian statistics in engine research.
► Demonstrate Bayesian model development to analyse in-cylinder pressure signals.
► Locate the resonant frequency of in-cylinder pressure signals.
► Establish a connection between frequency, temperature and trapped mass.
► Confirm the importance of considering inter-cycle variability.
Journal: Mechanical Systems and Signal Processing - Volume 26, January 2012, Pages 305–314