This study presents estimates for measurement uncertainties for a Homogenous Charge Compression Ignition (HCCI)/Low-Temperature Gasoline Combustion (LTGC) engine testing facility. A previously presented framework for quantifying those uncertainties developed uncertainty estimates based on the transducers manufacturers’ published tolerances. The present work utilizes the framework with improved uncertainty estimates in order to more accurately represent the actual uncertainties of the data acquired in the HCCI/LTGC laboratory, which ultimately results in a reduction in the uncertainty from 30 to less than 1 kPa during the intake and exhaust strokes. Details of laboratory calibration techniques and commissioning runs are used to constrain the sensitivities of the transducers relative to manufacturer supplied values. The uncertainty framework is also extended to consider additional sources of uncertainty, including non-ideal engine volume history due to kinematic effects on the effective connecting rod length. Finally, the uncertainty propagation chain is analyzed to determine primary uncertainty sources, and mitigations are discussed.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Refining Measurement Uncertainties in HCCI/LTGC Engine Experiments


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    WCX World Congress Experience ; 2018



    Publication date :

    2018-04-03




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    A Framework for Quantifying Measurement Uncertainties and Uncertainty Propagation in HCCI/LTGC Engine Experiments

    Petitpas, Guillaume / McNenly, Matthew J. / Whitesides, Russell A. | SAE Technical Papers | 2017


    HCCI in the DI gasoline engine: experiments and modelling

    Osborne,R. / Li,G. / Stokes,J. et al. | Automotive engineering | 2002


    HCCI in a CFR engine: experiments and detailed kinetic modeling

    Flowers,D. / Aceves,S. / Smith,R. et al. | Automotive engineering | 2000


    On HCCI Engine Knock

    Yang, Jialin / Andreae, Morgan M. / Kenney, Thomas et al. | SAE Technical Papers | 2007


    On HCCI engine knock

    Andreae,M.M. / Cheng,W.K. / Kenney,T. et al. | Automotive engineering | 2007