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Design and charge injection characteristics of an electrostatic dielectric liquid pulsed atomizer

Design and charge injection characteristics of an electrostatic dielectric liquid pulsed atomizer
Design and charge injection characteristics of an electrostatic dielectric liquid pulsed atomizer
An automotive fuel injector has been retrofitted with novel electrostatic components in order to improve the primary atomization and dispersion characteristics of the device. A specific design variant is presented and discussed outlining how a conventional fuel injector may be modified to house electrostatic components. With 2 bar gauge injection pressure and an electrical power of 2 mW, the injector can successfully supply intermittently charged fuel, containing spray specific charge levels up to ?1.4 C/m3. Root mean square (RMS) spray specific charge and RMS total current vs. voltage curves are presented as a function of voltage pulse and solenoid valve frequencies for both low and high flow-rate operation. The fuel injector was able to operate in a stable manner at pulse train frequencies up to 20 Hz and the charge injection mechanism was identical to previous steady voltage and pulsed voltage steady flow systems. An optimal synchronization between the high voltage (HV) pulse frequency and solenoid valve frequency has been determined, allowing for the prevention of electrical breakdown events within the inter-electrode gap over a negative voltage ranging from 0 to 4.5 kV
0304-3886
249-257
Shrimpton, J.S.
9cf82d2e-2f00-4ddf-bd19-9aff443784af
Kourmatzis, Agissilaos
2e6a16aa-3a9e-42ae-8e1d-a9b7bf9d637d
Shrimpton, J.S.
9cf82d2e-2f00-4ddf-bd19-9aff443784af
Kourmatzis, Agissilaos
2e6a16aa-3a9e-42ae-8e1d-a9b7bf9d637d

Shrimpton, J.S. and Kourmatzis, Agissilaos (2012) Design and charge injection characteristics of an electrostatic dielectric liquid pulsed atomizer. Journal of Electrostatics, 70 (3), 249-257. (doi:10.1016/j.elstat.2012.03.003).

Record type: Article

Abstract

An automotive fuel injector has been retrofitted with novel electrostatic components in order to improve the primary atomization and dispersion characteristics of the device. A specific design variant is presented and discussed outlining how a conventional fuel injector may be modified to house electrostatic components. With 2 bar gauge injection pressure and an electrical power of 2 mW, the injector can successfully supply intermittently charged fuel, containing spray specific charge levels up to ?1.4 C/m3. Root mean square (RMS) spray specific charge and RMS total current vs. voltage curves are presented as a function of voltage pulse and solenoid valve frequencies for both low and high flow-rate operation. The fuel injector was able to operate in a stable manner at pulse train frequencies up to 20 Hz and the charge injection mechanism was identical to previous steady voltage and pulsed voltage steady flow systems. An optimal synchronization between the high voltage (HV) pulse frequency and solenoid valve frequency has been determined, allowing for the prevention of electrical breakdown events within the inter-electrode gap over a negative voltage ranging from 0 to 4.5 kV

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Published date: June 2012
Organisations: Faculty of Engineering and the Environment

Identifiers

Local EPrints ID: 349247
URI: http://eprints.soton.ac.uk/id/eprint/349247
ISSN: 0304-3886
PURE UUID: 718e396c-1b12-40c3-b45d-c83f8eb22106

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Date deposited: 27 Feb 2013 09:42
Last modified: 16 Jul 2019 21:42

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Contributors

Author: J.S. Shrimpton
Author: Agissilaos Kourmatzis

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