The process of tip wetting at the spray injection end

The process of tip wetting at the spray injection end

Gasoline direct injection engines mainly use multi-hole high-pressure injectors. To respect the current pollutant regulation (particle number and particle mass) and continue to decrease pollutant emissions in the future, it is of outmost importance to identify the various sources of carbon particles...

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Veröffentlicht in:International journal of engine research 2021-01, Vol.22 (1), p.125-139
Hauptverfasser: Hélie, Jérôme, Lamarque, Nicolas, Fremaux, Jean-Luc, Serrecchia, Philippe, Khosravi, Maziar, Berkemeier, Oliver
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Sprache:eng
Schlagworte:
Counterboring
Gasoline
Particle mass
Pollutants
Wetting
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container_end_page 139
container_issue 1
container_start_page 125
container_title International journal of engine research
container_volume 22
creator Hélie, Jérôme
Lamarque, Nicolas
Fremaux, Jean-Luc
Serrecchia, Philippe
Khosravi, Maziar
Berkemeier, Oliver
description Gasoline direct injection engines mainly use multi-hole high-pressure injectors. To respect the current pollutant regulation (particle number and particle mass) and continue to decrease pollutant emissions in the future, it is of outmost importance to identify the various sources of carbon particles. In gasoline direct injection, tip wetting can generate a progressive tip sooting that can be a source of large number of particles especially in hot engine conditions. The different topics related to the tip wetting are investigated here without counterbore after the metering hole in order to have a direct access to the optical visualization. In this article, the different phases of the tip wetting are identified experimentally and phenomenological models are proposed.
doi_str_mv 10.1177/1468087419840842
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subjects Counterboring
Gasoline
Particle mass
Pollutants
Wetting
title The process of tip wetting at the spray injection end
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