Commercial interest in hybrid vehicle technology has grown at a much more dramatic rate than was predicted a decade ago. Around that time, many industry observers were substantially more optimistic about a major leap from current petroleum based technology straight to hydrogen, fuel cells and bio fuel systems. However, it is now widely accepted that hybrid vehicles will have a significant role to play over the next couple of decades as these other technologies continue to be developed. The development of power splitting transmissions (PST) has been a crucial feature in the technological success of hybrid driveline vehicles have played a key role in facilitating the management of the mechanical and electrical power flows, ensuring good drivability, providing improved economy and reducing emissions compared to conventional internal combustion engine vehicles. The aim of this paper is to analyse the various PST systems, to compare the performance characteristics of competing designs and to make some observations about the future direction of the technology. A software tool, TSAT, has been developed specifically to analyse these types of system which comprise collections of epicyclic gears, brakes, clutches and motor generator units interconnected in a wide variety of possible ways. The overall conclusion about the current picture is that whilst the first generation, single mode units have proved to be adequate in the small/mid size passenger car sector, dual mode systems are set to become dominant in the large car, SUV and commercial vehicle sectors.


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    Title :

    Power split transmissions for hybrid electric vehicles


    Contributors:
    Ren, O. (author) / Crolla, D.A. (author) / Wheatley, A. (author)


    Publication date :

    2007


    Size :

    11 Seiten, 15 Bilder, 10 Quellen


    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English




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