Environmental issues and energy security are critical concerns of the most countries. According researchers, excessive growth of land vehicles is one of the biggest contributors to global air pollution and oil reserves reduction. In this context, the use of lean burn technologies emerges as a promising strategy, allowing lower fuel consumption and pollutants emissions. Present work aims to analyze the behavior of a current commercial engine, gasoline fueled, varying the air-fuel ratio without the use of lean burn ignitions technologies. Analysis was performed through bench dynamometer tests, evaluating cylinder pressure, exhaust gas temperature, fuel conversion efficiency, cycle thermal efficiency, coefficient of variation in indicated mean effective pressure, apparent heat release rate, flame development angle and burn duration. As expected, mixture impoverishment caused a progressive increase of burn duration, flame development angle and coefficient of variation in indicated mean effective pressure and a decrease in exhaust gases temperature. Difficult operation of the catalyst due to the exhaust temperature reduction and the significant increase of combustion variability, pointed out by the experimental results, reinforce the importance of the use of techniques for adequate lean mixtures burning.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Combustion Analysis of a Current Vehicular Engine Operating in Lean Air-Fuel Conditions


    Additional title:

    Sae Technical Papers



    Conference:

    26th SAE BRASIL Inernational Congress and Display ; 2017



    Publication date :

    2017-11-07




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Analysis of cyclic combustion variations in a lean operating S.I. engine

    Yamamoto,H. / Misumi,M. / Mazda,Motor,JP | Automotive engineering | 1987


    Analysis in cyclic combustion Variation in a Lean Operating S.I. Engine

    Yamamoto, Hiroyuki / Misumi, Masanori | SAE Technical Papers | 1987



    LEAN OPERATING HYBRID GASOLINE ENGINE

    JOHNSON JACK / MCWILLIAM LYN / GEDDES JOHN et al. | European Patent Office | 2021

    Free access

    Lean operating hybrid gasoline engine

    BRYN LITTLEFAIR / LYN MCWILLIAM / JOHN GEDDES et al. | European Patent Office | 2021

    Free access