The proposed paper deals with the development process and initial measurement results of an opposed-piston combustion engine for application in a Free-Piston Linear Generator (FPLG). The FPLG, which is being developed at the German Aerospace Center (DLR), is an innovative internal combustion engine for a fuel based electrical power supply. With its arrangement, the pistons freely oscillate between the compression chamber of the combustion unit and a gas spring with no mechanical coupling like a crank shaft. Linear alternators convert the kinetic energy of the moving pistons into electric energy. The virtual development of the novel combustion system is divided into two stages: On the one hand, the combustion system including e.g. a cylinder liner, pistons, cooling and lubrication concepts has to be developed. On the other hand, 3D-CFD-simulations are used in the early stage within the virtual development process toward the optimization of the geometry of the scavenging ports and ducts, the gas exchange, injection and ignition. With the high variability of the free piston concept, a strategy for a dual combustion mode operation with spark ignition and homogeneous charge compression ignition (HCCI) is developed. The new engine is constructed on and implemented at a hydraulic free-piston test bench at DLR which controls the piston movements by two hydraulic actuators. In this stage, the power is not converted by linear generators yet. First measurement results show the engine behavior with dual spark ignition and two opposed injectors.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Development and Experimental Investigation of a Two-Stroke Opposed-Piston Free-Piston Engine


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    SAE/JSAE 2016 Small Engine Technology Conference & Exhibition ; 2016



    Erscheinungsdatum :

    2016-11-08




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Development and Experimental Investigation of a Two-Stroke Opposed-Piston Free-Piston Engine

    Schneider, Stephan / Chiodi, Marco / Friedrich, Horst E. et al. | Deutsches Zentrum für Luft- und Raumfahrt (DLR) | 2016

    Freier Zugriff

    Two-stroke opposed-piston railcar engine

    Engineering Index Backfile | 1936


    Opposed-piston engine

    Nott, R.H.P. | Engineering Index Backfile | 1944


    Turbocompounding the Opposed-Piston 2-Stroke Engine

    Young, Alexander / Turner, James / Head, Robert | SAE Technical Papers | 2021


    Commer opposed-piston two-stroke

    Engineering Index Backfile | 1954