Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1)

Hydrogen-diesel dual-fuel direct-injection (H2DDI) combustion under compression-ignition engine conditions




Julkaisun tekijät: Rorimpandey Patrick, Yip Ho Lung, Srna Aleš., Zhai Guanxiong, Wehrfritz Armin, Kook Sanghoon, Hawkes Evatt R., Chan Qing Nian

Kustantaja: Elsevier Ltd

Julkaisuvuosi: 2022

Journal: International Journal of Hydrogen Energy

Tietokannassa oleva lehden nimi: International Journal of Hydrogen Energy

ISSN: 0360-3199

eISSN: 1879-3487

DOI: http://dx.doi.org/10.1016/j.ijhydene.2022.09.241

Verkko-osoite: https://doi.org/10.1016/j.ijhydene.2022.09.241

Rinnakkaistallenteen osoite: https://research.utu.fi/converis/portal/detail/Publication/177172644


Tiivistelmä

This study investigates the ignition and combustion characteristics of interacting diesel-pilot and hydrogen (H2) jets under simulated compression-ignition engine conditions. Two converging single-hole injectors were used to inject H2 and diesel-pilot jets into an optically accessible constant-volume combustion chamber (CVCC). The parameters varied include fuel injection sequence, timing between injections, and ambient temperature (780–890 K). The results indicate that when diesel-pilot is injected before H2, with increasing time separation, the burnt diesel products mix and cool down, requiring longer jet-jet interaction to ignite the H2 jet. When H2 is injected before diesel-pilot, the H2-air mixing amount prior to pilot-fuel igniting impacts the combustion spreading through the H2 jet. If ignition of the H2 jet occurs beyond its end-of-injection (EOI), the H2 mixture zone where the pilot-diesel interacts with becomes too lean for combustion. At lower ambient temperatures, the combustion variability increases, attributed to the diesel-pilot lean out.


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Last updated on 2023-30-01 at 19:46