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The Effect of Fuel Volatility on Hcci Using Simultaneous Formaldehyde and Oh Plif

Collin, Robert LU ; Nygren, Jenny LU ; Richter, Mattias LU ; Aldén, Marcus LU ; Hildingsson, Leif LU and Johansson, Bengt LU (2004) In SAE Technical Paper 2004-01-2948
Abstract
Simultaneous formaldehyde and OH PLIF have been applied in a direct-injected HCCI engine. The engine is a 0.5 l single-cylinder optical engine equipped with EGR system. PLIF measurements were performed with the engine run with two different fuels of low and high volatility, respectively. Different ratios of EGR were also examined. The aim of the study was to investigate how fuels with different volatility and EGR affect the HCCI combustion and measurements were performed for early and late injection timings.



Measurements are presented for different injection timings showing formaldehyde and OH from start of injection until late in the expansion stroke. Also, formaldehyde distributions obtained from after the low... (More)
Simultaneous formaldehyde and OH PLIF have been applied in a direct-injected HCCI engine. The engine is a 0.5 l single-cylinder optical engine equipped with EGR system. PLIF measurements were performed with the engine run with two different fuels of low and high volatility, respectively. Different ratios of EGR were also examined. The aim of the study was to investigate how fuels with different volatility and EGR affect the HCCI combustion and measurements were performed for early and late injection timings.



Measurements are presented for different injection timings showing formaldehyde and OH from start of injection until late in the expansion stroke. Also, formaldehyde distributions obtained from after the low temperature regime and before the high temperature regime are studied for different tuning of the start of injection from 300 CAD to 20 CAD before top dead center. In this investigation the spatial homogeneity of the formaldehyde distributions and the surface fraction of LIF signal covering the image are compared for the different fuels and EGR ratios. (Less)
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author
organization
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type
Contribution to journal
publication status
published
subject
keywords
Combustion engines laser diagnostics optical
in
SAE Technical Paper 2004-01-2948
publisher
SAE
external identifiers
  • scopus:84877240570
DOI
10.4271/2004-01-2948
language
English
LU publication?
yes
id
3cf6abd1-1e2b-40e8-8829-95ded98b1774 (old id 739611)
date added to LUP
2007-12-17 12:35:55
date last changed
2017-06-04 04:43:04
@article{3cf6abd1-1e2b-40e8-8829-95ded98b1774,
  abstract     = {Simultaneous formaldehyde and OH PLIF have been applied in a direct-injected HCCI engine. The engine is a 0.5 l single-cylinder optical engine equipped with EGR system. PLIF measurements were performed with the engine run with two different fuels of low and high volatility, respectively. Different ratios of EGR were also examined. The aim of the study was to investigate how fuels with different volatility and EGR affect the HCCI combustion and measurements were performed for early and late injection timings. <br/><br>
<br/><br>
Measurements are presented for different injection timings showing formaldehyde and OH from start of injection until late in the expansion stroke. Also, formaldehyde distributions obtained from after the low temperature regime and before the high temperature regime are studied for different tuning of the start of injection from 300 CAD to 20 CAD before top dead center. In this investigation the spatial homogeneity of the formaldehyde distributions and the surface fraction of LIF signal covering the image are compared for the different fuels and EGR ratios.},
  author       = {Collin, Robert and Nygren, Jenny and Richter, Mattias and Aldén, Marcus and Hildingsson, Leif and Johansson, Bengt},
  keyword      = {Combustion engines laser diagnostics optical},
  language     = {eng},
  publisher    = {SAE},
  series       = {SAE Technical Paper 2004-01-2948},
  title        = {The Effect of Fuel Volatility on Hcci Using Simultaneous Formaldehyde and Oh Plif},
  url          = {http://dx.doi.org/10.4271/2004-01-2948},
  year         = {2004},
}