The enhancement of vortex development, fuel-air mixing and heat release in diesel spray flame by inversed-delta injection rate shaping, having been predicted via LES simulation with detailed chemical kinetics, is experimentally confirmed for the first time. Newly developed 3-injector TAIZAC (TAndem Injector Zapping ACtivation) injector realizing aggressive inversed-delta injection rate shaping was used for single-shot combustion experiments in a constant volume combustion vessel. Simultaneous high-speed (120,000fps) and high-resolution (1,280 x 704 pixels) laser schlieren and UV OH* chemiluminescence imaging combined with subsequent Flame Imaging Velocimetry (FIV) analysis was employed to elucidate the correlation between vortex development and enhanced heat release. Compared to the conventional rectangular injection rate, the inversed-delta rate shaping case showed a significant enhancement of vortex development, turbulence intensity and heat release, especially in downstream regions of diesel spray flame beyond 30 mm from the ϕ0.133-mm nozzle orifice.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Vortex Development and Heat Release Enhancement in Diesel Spray Flame by Inversed-Delta Injection Rate Shaping Using TAIZAC Injector


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Rao, Lingzhe (Autor:in) / Kook, Sanghoon (Autor:in) / Shimada, Taizo (Autor:in) / Takahashi, Tatsuki (Autor:in) / Aizawa, Tetsuya (Autor:in) / Kinoshita, Tomoki (Autor:in) / Tanaka, Yohei (Autor:in) / Miyagawa, Yuusei (Autor:in)

    Kongress:

    15th International Conference on Engines & Vehicles ; 2021



    Erscheinungsdatum :

    2021-09-05




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Optical Diagnostics of Inversed-Delta Rate Shaping Diesel Spray Flame towards Reduction of Late Combustion

    Takahara, Kazuhiro / Bin Abdullah, Mohd Fareez Edzuan / Akiyama, Shinobu et al. | SAE Technical Papers | 2018


    Diesel Spray Combustion Rate Enhancement by Increasing Injection Pressure

    Reggiori, Adolfo / Daminelli, Giambattista / Riva, Giulio E. | SAE Technical Papers | 1993


    Diesel spray combustion rate enhancement by increasing injection pressure

    Riva,G.E. / Reggiori,A. / Daminelli,G. et al. | Kraftfahrwesen | 1993



    Dynamic rate shaping - one diesel common-rail injector for all combustion strategies

    Needham, David / Mellors, Dan / Williams, Tony et al. | TIBKAT | 2019