Among all the reciprocating internal combustion engines, gasoline two-strokes can reach the highest specific power, making this technology a natural enabler of downsizing and/or down-speeding. In addition, multi-cylinder 2-stroke engines may be an ideal match for electrical superchargers, providing very efficient power units.The paper explores through CFD-1d simulations and empirical hypotheses the potential of a 3-cylinder, 1.0 liter, GDI 2-stroke turbocharged engine featuring a patented rotary valve for the optimization of the scavenging process, the latter being of the loop type (piston-controlled ports). The lubrication system is the same of a 4-stroke engine (no crankcase pumps). The supercharging system is made up of a turbocharger and an electric compressor, serially connected. The power of the electric compressor is limited to 2 kW, in order to comply with standard automotive 12 V electric systems.The proposed engine easily achieves the goal of 95 kW at 4500 rpm, and 210 Nm at 1500 rpm, resulting also quite fuel efficient at any operating conditions (best point: 211 g/kWh, achieved with stratified charge).


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Two-Stroke Gasoline Engines for Small-Medium Passenger Cars


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE 2015 World Congress & Exhibition ; 2015



    Publication date :

    2015-04-14




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Two-stroke gasoline engines for small-medium passenger cars

    Mattarelli,E. / Rinaldini,C.A. / Univ.di Modena,IT | Automotive engineering | 2015


    Two-Stroke Gasoline Engines for Small-Medium Passenger Cars

    Mattarelli, Enrico / Rinaldini, Carlo Alberto | British Library Conference Proceedings | 2015


    Mechanical efficiency of small engines for passenger cars

    Remek,B. / Pilc,O. / Tech.Univ.Prag,CZ et al. | Automotive engineering | 2000


    Developments in gasoline passenger rail cars

    Bean, W.L. | Engineering Index Backfile | 1922


    Engines for tomorrow's passenger cars

    Withrow, J. / Franceschina, J. | Tema Archive | 1976