The traditional advantages of natural gas as an alternative fuel litte low soot and NOx emissions have been known for many years. The continuous further development of Diesel engines by the automotive industry with huge development budgets for both heavy-duty vehicles as well as for passenger cars is closing the gap in exhaust gas emission properties year by year. The clear advantages in fuel consumption of diesel engine equipped vehicles (compared to gasoline engines) in combination with the very much-improved performance of modern diesel cars have lead to a substantial increase of the selling rates of these vehicles in Europe over the last decade. Nowadays in the EU more than 30% of the new sold cars have Diesel engines. For commercial (HD) vehicles the position of the Diesel engine is even much stronger: practically 100% of the commercial / HD vehicle fleet is equipped with Diesel engines. Despite the continuous further development of diesel technology, it will become very hard for truck and engine manufactures to provide cost effective solutions that meet the newest EPA regulations for HD vehicles with NOx-emissions as low as 0,2 g/bhp-hr = 0,275 g/kWh) without sacrificing fuel consumption benefits. Within this paper NoNoX-presents a new NG engine for HD applications that is capable of meeting the very stringent future EPA emission regulations, reducing CO2 emissions substantially and providing tower operational costs to the end customer; the fleet owner at the same time. Regarding the situation shown in the paper, there is no doubt that for a country like the USA with its high dependency on oil imports, there is a great future for NG as an alternative fuel, in particular as an automotive fuel. Before the principal of operation of the NoNoX engine is explained and which performance already has been proven, two background issues related to the subject will be discussed in advance.


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    Titel :

    High efficiency natural gas engine with throttle-free load control and Miller cycle valve timing


    Weitere Titelangaben:

    Erdgas-Ottomotor mit hohem Wirkungsgrad und einer drosselfreien Leistungssteuerung und Millerprozeß-Ventilzeitsteuerung


    Beteiligte:


    Erscheinungsdatum :

    2004


    Format / Umfang :

    14 Seiten, 22 Bilder, 3 Tabellen, 9 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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    Klueting, M. / Flierl, R. / Unger, H. et al. | British Library Conference Proceedings | 1999