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An electrostatic trap for control of ultrafine particle emissions from gasoline-engined vehicles

An electrostatic trap for control of ultrafine particle emissions from gasoline-engined vehicles
An electrostatic trap for control of ultrafine particle emissions from gasoline-engined vehicles
Health concerns over ultrafine (<100 nm) particles in the urban atmosphere have focused attention on measurement and control of particle number as well as mass. Gasoline-engined as well as diesel-engined vehicles are likely to be within the scope of future particulate matter (PM) emission regulations. As a potential option for after-treatment of PM emissions from gasoline engines, the trapping performance of a catalysed wire-cylinder electrostatic trap has been investigated, first in a laboratory rig with simulated PM and then in the exhaust of a direct injection spark ignition engine. In the simulation experiments, the trap achieved capture efficiencies by total particle number exceeding 90 per cent at wire voltages of 7–10 kV, gas temperatures up to 400 °C, and operating durations up to one hour, with no adverse effects from a catalyst coating on the collecting electrode. In the engine tests, at moderate speeds and loads, capture efficiency was 60–85 per cent in the homogeneous combustion mode and 50–60 per cent, of a much larger number of engine-out particles, in the stratified (overall-lean) mode. Gas residence time in the trap appeared to be a major factor in determining efficiency. The electrical power requirement and the effect on engine back-pressure were both minimal.
gasoline engines, particulate emissions, after-treatment, particulate trap, electrostatic
0954-4070
535-546
Rubino, L.
fadfa091-1075-4dbc-9231-0f9b3f8e7b8b
Crane, R.I.
9cf82d2e-2f00-4ddf-bd19-9aff443784af
Arcoumanis, C.A.
bf076023-59ee-432b-950c-f4b5fa63fa3f
Rubino, L.
fadfa091-1075-4dbc-9231-0f9b3f8e7b8b
Crane, R.I.
9cf82d2e-2f00-4ddf-bd19-9aff443784af
Arcoumanis, C.A.
bf076023-59ee-432b-950c-f4b5fa63fa3f

Rubino, L., Crane, R.I. and Arcoumanis, C.A. (2005) An electrostatic trap for control of ultrafine particle emissions from gasoline-engined vehicles. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 219 (4), 535-546. (doi:10.1243/095440705X6668).

Record type: Article

Abstract

Health concerns over ultrafine (<100 nm) particles in the urban atmosphere have focused attention on measurement and control of particle number as well as mass. Gasoline-engined as well as diesel-engined vehicles are likely to be within the scope of future particulate matter (PM) emission regulations. As a potential option for after-treatment of PM emissions from gasoline engines, the trapping performance of a catalysed wire-cylinder electrostatic trap has been investigated, first in a laboratory rig with simulated PM and then in the exhaust of a direct injection spark ignition engine. In the simulation experiments, the trap achieved capture efficiencies by total particle number exceeding 90 per cent at wire voltages of 7–10 kV, gas temperatures up to 400 °C, and operating durations up to one hour, with no adverse effects from a catalyst coating on the collecting electrode. In the engine tests, at moderate speeds and loads, capture efficiency was 60–85 per cent in the homogeneous combustion mode and 50–60 per cent, of a much larger number of engine-out particles, in the stratified (overall-lean) mode. Gas residence time in the trap appeared to be a major factor in determining efficiency. The electrical power requirement and the effect on engine back-pressure were both minimal.

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More information

Published date: April 2005
Keywords: gasoline engines, particulate emissions, after-treatment, particulate trap, electrostatic

Identifiers

Local EPrints ID: 64554
URI: http://eprints.soton.ac.uk/id/eprint/64554
ISSN: 0954-4070
PURE UUID: 332fd24f-50b4-40ef-b023-7713d0845668

Catalogue record

Date deposited: 23 Dec 2008
Last modified: 08 Jan 2022 16:05

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Contributors

Author: L. Rubino
Author: R.I. Crane
Author: C.A. Arcoumanis

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