The paper has described a transient testing facility that is able to produce engine performance and emission results that are repeatable and which correlate well with vehicle data from chassis rolls. The important features of the facility are: the testbed installation incorporating the vehicle cooling system, a power take off, clutch, engine ancillaries, engine mounting system and a large cooling fan; the real-time control technology implemented within the RTA TaskMaster and dSPACE computer systems, and the performance effects built in to the driveline and vehicle simulation; the thermal management of the testbed during transient tests and during rapid cooling. Results have been presented that correlate the facility with the chassis rolls for EUDC and FTP drive cycles. The rapid cool down capability of the facility allows cold starts to be performed every 2 hours. A calibration methodology is under development that is establishing objective measures of vehicle performance to correlate with subjective ratings and the calibration processes involved in vehicle driveability. This work is a stepping stone to vehicle transient development on the testbed.


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    Title :

    Vehicle calibration on the testbed - methodology and tools


    Additional title:

    Fahrzeugeinstellung auf dem Prüfstand - Methodologie und Werkzeuge


    Contributors:


    Publication date :

    2000


    Size :

    20 Seiten, 10 Bilder, 8 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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