In the context of CO₂ emission regulations and increase of energy prices, the downsizing of engine displacement is a widely discussed solution that allows a reduction of fuel consumption. However, high power density is required in order to maintain the power output and a good driveability.This study demonstrates the potential to strongly increase the specific power of High Speed Diesel Injection (HSDI) diesel engines. It includes the technological requirements to achieve high specific power and the optimal combination of engine settings to maximize specific power. The results are based on experimental work performed with a prototype single-cylinder engine (compression ratio of 14). Tests were conducted at full load, 4000 rpm. Part load requirements are also taken into account in the engine definition to be compatible with the targets of new emission standards. The influence of boost pressure, peak in-cylinder pressure, injection pressure and nozzle flow rate on full load limitations (exhaust temperature and smoke level) is studied to define the technological requirements for a power density of 80, 85 or 90 kW/l.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Increasing Power Density in HSDI Engines as an Approach for Engine Downsizing


    Additional title:

    Sae Int. J. Engines


    Contributors:

    Conference:

    International Powertrains, Fuels & Lubricants Meeting ; 2010


    Published in:

    Publication date :

    2010-05-05


    Size :

    16 pages




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    HSDI diesel engines - FEVs high power density concept

    Lamping,M. / Koerfer,T.M. / Wix,K. et al. | Automotive engineering | 2009


    Herausforderung CO2: Aggressives Downsizing für HSDI-Diesel - Motorkonzeptdefinition

    Sorger, Helfried / Howlett, Michael / Schnider, Wolfgang et al. | Tema Archive | 2010


    Herausforderung CO2: aggressives Downsizing fuer HSDI Diesel - Motorkonzeptfindung

    Sorger,H. / Howlett,M. / Schnider,W. et al. | Automotive engineering | 2010


    Exhaust aftertreatment technologies for HSDI diesel engines

    Herzog,P.L. / AVL List,Graz,AT | Automotive engineering | 2000


    Exhaust aftertreatment technologies for HSDI diesel engines

    Herzog,P. / AVL List,Graz,AT | Automotive engineering | 2000