The growing demand for sustainable transportation worldwide is being shaped by multiple business realities. Energy availability, environmental impact, fuel price, and legislation combined with shifts in customer buying preferences is driving significant interest in the development of advanced vehicle technologies. Energy diversity and advanced propulsion technologies that improve fuel economy and reduce emissions are key to developing sustainable transportation options for the future. Three major powertrain trends emerge globally which include advanced spark ignited (SI) engine technology, clean-diesel and hybridization of the powertrain with electric assist and advanced battery technology. Moving forward, extension of the hybridelectric propulsion systems to include plug-in technology, range extended electric vehicles and eventually hydrogen fuel cell powerplants will further diversify energy sources, reduce emissions and improve fuel efficiency. Given dramatic increases in powertrain options for vehicles, manufacturers are faced with the increasing dilemma of choosing the best combinations across a diverse vehicle portfolio. Diesel engines have historically been relied on for their high efficiency characteristics but have recently become challenged by strong emission legislation changes in different regions of the world. At the same time, high-efficiency SI engine options have been eroding the efficiency gap that has existed between the two powerplants. Adding hybrid-electrification to the SI engine further closes the gap and raises the question - What is the preferred propulsion system of the future? Improvements to diesel and SI engines combined with advanced transmissions, optimal engine downsizing and hybridization provide opportunities to improve the CO2 impact of future powertrains. Given relative strengths of each of the technology options, it is likely that multiple technical solutions will simultaneously exist in the market place. There is no single option or silver bullet powertrain that will be the best answer for all customers. The most favorable powertrain solution is dependent upon the individual vehicle application and its expected driving cycle. From a customer perspective, other factors including the vehicle performance, cost and market image also vary by application and segment. In this paper the technical and cost implications of some of the major powertrain options in this strategically important debate are discussed.


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    Titel :

    Diesel engine or hybrid system - What is the preferred propulsion system of the future?


    Weitere Titelangaben:

    Dieselmotor oder Hybridantrieb - was Ist das bevorzugte Antriebssystem der Zukunft?


    Beteiligte:


    Erscheinungsdatum :

    2007


    Format / Umfang :

    20 Seiten, 12 Bilder, 7 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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