Analysis of transition from HCCI to CI via PPC with low octane gasoline fuels using optical diagnostics and soot particle analysis

Y. An, R. Vallinayagam, S. Vedharaj, Jean-Baptiste Masurier, A. Dawood, M. Izadi Najafabadi, B. Somers, B. Johansson

Research output: Contribution to journalArticleAcademicpeer-review

8 Citations (Scopus)

Abstract

In-cylinder visualization, combustion stratification, and engine-out particulate matter (PM) emissions were investigated in an optical engine fueled with Haltermann straight-run naphtha fuel and corresponding surrogate fuel. The combustion mode was transited from homogeneous charge compression ignition (HCCI) to conventional compression ignition (CI) via partially premixed combustion (PPC). Single injection strategy with the change of start of injection (SOI) from early to late injections was employed. The high-speed color camera was used to capture the in-cylinder combustion images. The combustion stratification was analyzed based on the natural luminosity of the combustion images. The regulated emission of unburned hydrocarbon (UHC), carbon monoxide (CO) and nitrogen oxides (NOX) were measured to evaluate the combustion efficiency together with the in-cylinder rate of heat release. Soot mass concentration was measured and linked with the combustion stratification and the integrated red channel intensity of the high-speed images for the soot emissions. The nucleation nanoscale particle number and the particle size distribution were sampled to understand the effect of combustion mode switch.
LanguageEnglish
Article number2017-01-2403
Number of pages12
JournalSAE Technical Papers
DOIs
StatePublished - 8 Oct 2017

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Soot
Gasoline
Ignition
Engine cylinders
Engines
Naphthas
Nitrogen oxides
Carbon monoxide
Particle size analysis
Particles (particulate matter)
Luminance
Nucleation
Visualization
Cameras
Hydrocarbons
Switches
Color

Cite this

@article{7520ca076e2d4422af517f7d077c2bcb,
title = "Analysis of transition from HCCI to CI via PPC with low octane gasoline fuels using optical diagnostics and soot particle analysis",
abstract = "In-cylinder visualization, combustion stratification, and engine-out particulate matter (PM) emissions were investigated in an optical engine fueled with Haltermann straight-run naphtha fuel and corresponding surrogate fuel. The combustion mode was transited from homogeneous charge compression ignition (HCCI) to conventional compression ignition (CI) via partially premixed combustion (PPC). Single injection strategy with the change of start of injection (SOI) from early to late injections was employed. The high-speed color camera was used to capture the in-cylinder combustion images. The combustion stratification was analyzed based on the natural luminosity of the combustion images. The regulated emission of unburned hydrocarbon (UHC), carbon monoxide (CO) and nitrogen oxides (NOX) were measured to evaluate the combustion efficiency together with the in-cylinder rate of heat release. Soot mass concentration was measured and linked with the combustion stratification and the integrated red channel intensity of the high-speed images for the soot emissions. The nucleation nanoscale particle number and the particle size distribution were sampled to understand the effect of combustion mode switch.",
author = "Y. An and R. Vallinayagam and S. Vedharaj and Jean-Baptiste Masurier and A. Dawood and {Izadi Najafabadi}, M. and B. Somers and B. Johansson",
year = "2017",
month = "10",
day = "8",
doi = "10.4271/2017-01-2403",
language = "English",
journal = "SAE Technical Papers",
issn = "0148-7191",
publisher = "Society of Automotive Engineers (SAE)",

}

Analysis of transition from HCCI to CI via PPC with low octane gasoline fuels using optical diagnostics and soot particle analysis. / An, Y.; Vallinayagam, R.; Vedharaj, S.; Masurier, Jean-Baptiste; Dawood, A.; Izadi Najafabadi, M.; Somers, B.; Johansson, B.

In: SAE Technical Papers, 08.10.2017.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

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AU - An,Y.

AU - Vallinayagam,R.

AU - Vedharaj,S.

AU - Masurier,Jean-Baptiste

AU - Dawood,A.

AU - Izadi Najafabadi,M.

AU - Somers,B.

AU - Johansson,B.

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AB - In-cylinder visualization, combustion stratification, and engine-out particulate matter (PM) emissions were investigated in an optical engine fueled with Haltermann straight-run naphtha fuel and corresponding surrogate fuel. The combustion mode was transited from homogeneous charge compression ignition (HCCI) to conventional compression ignition (CI) via partially premixed combustion (PPC). Single injection strategy with the change of start of injection (SOI) from early to late injections was employed. The high-speed color camera was used to capture the in-cylinder combustion images. The combustion stratification was analyzed based on the natural luminosity of the combustion images. The regulated emission of unburned hydrocarbon (UHC), carbon monoxide (CO) and nitrogen oxides (NOX) were measured to evaluate the combustion efficiency together with the in-cylinder rate of heat release. Soot mass concentration was measured and linked with the combustion stratification and the integrated red channel intensity of the high-speed images for the soot emissions. The nucleation nanoscale particle number and the particle size distribution were sampled to understand the effect of combustion mode switch.

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