In spite of quite different predictions regarding the future market shares of Hybrids and Electric Vehicles, the conventional powertrain will remain the dominating propulsion system for road transport even beyond this decade. However, the differentiation between a "conventional" and an "electrified" powertrain will change. Whereas today this border is defined by components (application of an E-motor that provides additional torque to the powertrain), in future, the differentiation will be based on functions (ability for pure electric and "emission-free" driving). To comply with legal requirements and customer demands, dramatic improvements in fuel economy have to be obtained even within the "conventional" powertrain. As especially those boundaries and customer requirements which have the most significant impact on the technology selection, are quite different in the main markets, a huge variety of different powertrain solutions has to be developed to reach this target. Thus, mastering the product diversification at minimum cost and highest production flexibility becomes the key challenge with powertrain development. Modular engine concepts that cover both Diesel and Gasoline engines as well as modular powertrain systems that enable the generation both of conventional and hybridized variants within high manufacturing flexibility, are the most effective solutions. However, this will require a fully comprehensive development approach - including not only engine, transmission and electrification hardware, but also the respective operation strategies and control software to provide a maximum on functional integration. Anyway, future transmission concepts and operation strategies will have a dominating influence on the combustion engine technology. Especially with Gasoline engines, vehicle category and transmission type have significant impacts on technology selection of the ICE. With small vehicles, CVT, AT and hybridization, the naturally aspirated engine, partially even with MPFI, will still offer competitive cost / benefit and customer acceptance especially in the Asian market. With larger vehicles, MT and DCT, the trend towards turbocharged GDI dominating Europe will be expanded to US and to a certain extend also towards China. With the Diesel engine, less the transmission type, but more the market segment will determine the technology. In the cost sensitive volume market, an "efficiency approach" which consequently utilizes limited power and peak pressure for optimized friction and emission, is a very cost effective approach. Within the performance / image segment, aggressively downsized high power variants offer excellent fuel economy / CO2, however, require also higher efforts for the exhaust gas aftertreatment especially regarding future RDE requirements.


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    Titel :

    The classic powertrain and its potential still indispensible?


    Weitere Titelangaben:

    Der konventionelle Antrieb und sein Potenzial - Noch immer unverzichtbar?


    Beteiligte:


    Erscheinungsdatum :

    2012


    Format / Umfang :

    16 Seiten, 30 Bilder, 12 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    The classic powertrain and its potentials still indispensible?

    Fraidl,G. / Kuepper,K. / Sorger,H. et al. | Kraftfahrwesen | 2012


    Powertrain integration - realizing the potential

    Whelan, C. / Institution of Mechanical Engineers (Great Britain) | British Library Conference Proceedings