Fuel efficiency is one of the most important parameters in advanced vehicles. Therefore, the measurement of fuel consumption in-situ and in real-time is obviously demanded in development and evaluation processes of new engines and vehicles. This paper describes a new concept for measuring fuel consumption in real-time, which utilizing raw exhaust gas flow rate and exhaust air-to-fuel ratio (AFR). The AFR is defined as the mass ratio of air and fuel supplied to the engine, and the mass flow rate of exhaust gas can be regarded as the summation of the mass flow rate of air and fuel. This means the fuel consumption can be calculated from exhaust flow rate and AFR.To realize in-situ, real-time measurement, we used an ultrasonic exhaust flow meter which can measure a wide flow range accurately with no pressure loss, and a fast response zirconia sensor which can be installed onto the exhaust pipe directly without any sampling system. This exhaust flow-AFR method has the advantage that the real-time fuel consumption can be easily obtained without delay time by these in-situ measuring devices which can be installed at the almost same location.Integrated fuel consumption by this method showed good correlations with conventional methods, i.e. the carbon balance method and the fuel flow method. Furthermore, in the transient tests including engine start and fuel cutting operation, it showed sufficient response for real-time analysis. The results suggest that this method has a significant potential for measuring fuel consumption in-situ and in real-time.


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    Title :

    In-Situ Real-Time Fuel Consumption Measurement Using Raw Exhaust Flow Meter and Zirconia AFR Sensor


    Additional title:

    Sae Int. J. Commer. Veh


    Contributors:

    Conference:

    SAE 2013 World Congress & Exhibition ; 2013



    Publication date :

    2013-04-08


    Size :

    7 pages




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    In-Situ Real-Time Fuel Consumption Measurement Using Raw Exhaust Flow Meter and Zirconia AFR Sensor

    Akita, M. / Nakamura, H. / Adachi, M. et al. | British Library Conference Proceedings | 2013


    Real-time Fuel Consumption Measurement Using Raw Exhaust Flow Meter and Zirconia AFR Sensor

    Akita, M. / Nakamura, H. / Adachi, M. | British Library Online Contents | 2014


    Fuel consumption meter

    McCarthy, J. | Tema Archive | 1978


    Precise real-time fuel consumption measurement

    Schrittwieser, M. / Schneider, C. / International Council on Combustion Engines | British Library Conference Proceedings | 2007


    Exhaust flow meter calibration

    Guenther,M. / Polster,M. / Wroza,L. et al. | Automotive engineering | 2004