Experimental optimization of the ejector design developed for a driver’s airbag

Authors

DOI:

https://doi.org/10.20535/2521-1943.2022.6.1.260933

Keywords:

pulse ejector, airbag inflation, air entrainment (ejection, aspiration), pressure field measurements

Abstract

Design modifications are tested experimentally of the compact supersonic ejector developed for the novel airbag inflation system. The base design resulting from combined numerical and experimental investigations showed itself potentially capable of inflating the 50 L airbag with three parts of entrained air volume together with one part produced by a gas generator. The base design work continues to study its technological flexibility and operational reliability by analyzing a complex flow structure within the inflator. For that, minor changes and supplements to the design were evaluated experimentally to avoid complicated numerical simulations. In particular, it was supposed that a vortex formed at the inflator inlet could significantly reduce its operational cross-section. The impact of this vortex on the airbag filling was investigated in the Laboratory for Advanced Aerodynamics using the developed pneumatic facility. The applied design improvement was found to affect the pressure distribution favorably in the inflator that increased the airbag filling by ~5%.

References

  1. George Intas and Pantelis Stergiannis, “How safe are the airbags? A review of literature”, Health Science Journal, vol. 5, no. 4, pp. 262–268, 2011.
  2. N. Yurchenko, “Supersonic ejectors for advanced airbag inflation systems”, Academia Letters, 2021. DOI: https://doi.org/10.20935/AL796.
  3. D. S. Breed, G. A. Voropaiev, N. F. Yurchenko, Yu. A. Paramonov and A. I. Koshil, Airbag inflators including aspirators. Patent WO2018132420A1, published 19.07.2018.
  4. D. Breed, S. Zhang and N. Yurchenko, "Toward autonomous vehicles: basic aerodynamic background for novel airbag inflation system", in Proceedings of the 14th International Symposium on Sophisticated Car Safety Systems, Mannheim, Germany, 2018.
  5. V. L. Kysil, K. M. Kuzmenko and N. F. Yurchenko, "Universal high-speed pneumatic valve UHSV16–1", in Proceedings of the XXIV International Scientific and Technical Conference “Hydroaeromechanics in Engineering Practice”, Kyiv, Ukraine, 2019.
  6. N. Yurchenko and P. Vynogradskyy, “Development of a compact pulsed ejector: performance assessment from measured aerodynamic characteristics”, Mechanics and Advanced Technologies, no. 2(89), pp. 7-17, 2020. DOI: https://doi.org/10.20535/2521-1943.2020.89.211391.
  7. N. F. Yurchenko, A. Koroleva, P. M. Vinogradsky, Yu. A. Paramonov and V. S. Tsymbal, “Characterization of the efficiency of the pulse ejector by the main flow parameters”, in Proceedings of the XXV International Scientific and Technical Conference “Hydroaeromechanics in Engineering Practice”, Kyiv, Ukraine, 2020.
  8. N. F. Yurchenko, D. S. Breed and S. Zhang, “Design of the airbag inflation system applicable to conventional and autonomous Vehicles”, Automotive Innovation, vol. 4, no. 4, pp. 390-399, 2021. DOI: https://doi.org/10.1007/s42154-021-00156-y.
  9. N. F. Yurchenko, Method of interface active control on bodies of complex geometry. Patent of Ukraine UA45240U, published 26.10.2009.
  10. N. F. Yurchenko, “Energy-efficient flow control around blunt bodies”, Advances in Aircraft and Spacecraft Science, vol. 1, no. 1, pp. 15–25, 2014. DOI: https://doi.org/10.12989/aas.2014.1.1.015.

Downloads

Published

2022-05-31

How to Cite

[1]
N. Yurchenko and P. Vynogradskyy, “Experimental optimization of the ejector design developed for a driver’s airbag”, Mech. Adv. Technol., vol. 6, no. 1, pp. 79–84, May 2022.

Issue

Vol. 6 No. 1 (2022)

Section

Mechanics

License

Copyright (c) 2022 Ніна Юрченко, Павло Виноградський

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

The ownership of copyright remains with the Authors.
 
Authors may use their own material in other publications provided that the Journal is acknowledged as the original place of publication and National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” as the Publisher.

Authors who publish with this journal agree to the following terms:

  1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under CC BY 4.0 that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

  2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.

  3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work