Hybrid electric vehicles (HEVs) consist of various components such as engine, generator (GE), motor/generator (MG) and rechargeable energy storage system (RESS). Because of these vehicles can regenerate kinetic energy during deceleration, it desirable to evaluate them as vehicle systems, not just as engine units. However, the use of chassis dynamometer (CD) for testing heavy-duty vehicles is costly because exhaust emissions measurement system is required to be installed to the CD. Considering these subjects, we have been studying a test method that uses hardware-in-the-loop simulator (HILS). Testing a series HEV, we examined the feasibility of test method which calculates engine rotational frequency, torques, and fuel consumption during a certified driving cycle by using HILS with the combination of actual ECUs and a driver model, and measures exhaust emissions of the engine unit. The obtained results are follows: When actual specification data is inputted on the individual elements of a HEV model, and the actual control input is inputted to HILs in trapezoidal driving cycle (test time, 100 s), as well as verification of EV parts, values calculated on vehicle speed, MG power, and battery power/voltage/current/SOC were in good agreement with the measured values. In addition, the correlation between the calculated and measured values yielded a coefficient of determination of 0.95 or more. Furthermore, when we inputted an actual control input to HILS in the Japan driving cycle JE05 and verified the behavior as series HEV, the calculated values on engine work almost agreed with the measured ones, with an error of less than 5%. When we used a driver model the calculated values agreed with the measured ones, with an error of less than 2%. The results show that HILS can be used to calculate the operational conditions of a HEV's engine unit with high accuracy. We will now verify the accuracy of HILS calculation for parallel HEVs. In addition, we will (1) standardize HEV models that can accomodate vehicles made by various companies; (2) define individual element test methods for obtaining parameter data; and (3) establish a method of calibrating HILS. Finally, (4) we will propose this method as a certified test procedure.


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    Titel :

    Fuel consumption and exhaust emissions test method for heavy-duty HEVs by using of HILS - application to a series HEV -


    Weitere Titelangaben:

    Kraftstoffverbrauch und Abgasemissionsprüfverfahren für Hochleistungshybridfahrzeuge mit Hilfe der HILS-Anwendung


    Beteiligte:
    Morita, Kenji (Autor:in) / Shimamura, Kazuki (Autor:in) / Ichikawa, Jun (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2006


    Format / Umfang :

    6 Seiten, 7 Bilder, 1 Tabelle, 2 Quellen



    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




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