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Studies of the combustion process with simultaneous formaldehyde and OHPLIF in a direct-injected HCCI engine

Richter, Mattias LU ; Collin, Robert LU ; Nygren, Jenny LU ; Aldén, Marcus LU ; Hildingsson, Leif LU and Johansson, Bengt LU (2005) In JSME International Journal. Series B: Fluids and Thermal Engineering 48(4). p.701-707
Abstract
This paper presents simultaneous laser based measurements of formaldehyde and OH-radical distributions in a 0.5 liter optical HCCI engine with direct injection. Formaldehyde is formed as an intermediate species when combusting hydrocarbons. The formation occurs through low temperature reactions in an early phase of the combustion process. Later in the process formaldehyde is being consumed. Formaldehyde is, therefore, used as indicator of the first stage of combustion and a marker of zones with low-lemperature reactions. The OH radical is formed as an intermediate during the high temperature reactions, and is used as a marker of zones where the combustion is ongoing. The purpose of the investigation was to study how the combustion process... (More)
This paper presents simultaneous laser based measurements of formaldehyde and OH-radical distributions in a 0.5 liter optical HCCI engine with direct injection. Formaldehyde is formed as an intermediate species when combusting hydrocarbons. The formation occurs through low temperature reactions in an early phase of the combustion process. Later in the process formaldehyde is being consumed. Formaldehyde is, therefore, used as indicator of the first stage of combustion and a marker of zones with low-lemperature reactions. The OH radical is formed as an intermediate during the high temperature reactions, and is used as a marker of zones where the combustion is ongoing. The purpose of the investigation was to study how the combustion process is affected by the change in homogeneity that arises from early and late injection, respectively. The measurement technique used was planar laser-induced fluorescence where formaldehyde was excited at 355 nm and OH at 283 nm. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
OH, formaldehyde, HCCI, direct-injection, PLIF
in
JSME International Journal. Series B: Fluids and Thermal Engineering
volume
48
issue
4
pages
701 - 707
publisher
The Japan Society of Mechanical Engineers
external identifiers
  • wos:000234376500011
  • scopus:33646757896
ISSN
1340-8054
DOI
10.1299/jsmeb.48.701
language
English
LU publication?
yes
id
9c4b3c69-a87b-4b3c-802d-a5e6331b11f7 (old id 210207)
date added to LUP
2007-10-05 12:40:27
date last changed
2017-08-20 04:28:20
@article{9c4b3c69-a87b-4b3c-802d-a5e6331b11f7,
  abstract     = {This paper presents simultaneous laser based measurements of formaldehyde and OH-radical distributions in a 0.5 liter optical HCCI engine with direct injection. Formaldehyde is formed as an intermediate species when combusting hydrocarbons. The formation occurs through low temperature reactions in an early phase of the combustion process. Later in the process formaldehyde is being consumed. Formaldehyde is, therefore, used as indicator of the first stage of combustion and a marker of zones with low-lemperature reactions. The OH radical is formed as an intermediate during the high temperature reactions, and is used as a marker of zones where the combustion is ongoing. The purpose of the investigation was to study how the combustion process is affected by the change in homogeneity that arises from early and late injection, respectively. The measurement technique used was planar laser-induced fluorescence where formaldehyde was excited at 355 nm and OH at 283 nm.},
  author       = {Richter, Mattias and Collin, Robert and Nygren, Jenny and Aldén, Marcus and Hildingsson, Leif and Johansson, Bengt},
  issn         = {1340-8054},
  keyword      = {OH,formaldehyde,HCCI,direct-injection,PLIF},
  language     = {eng},
  number       = {4},
  pages        = {701--707},
  publisher    = {The Japan Society of Mechanical Engineers},
  series       = {JSME International Journal. Series B: Fluids and Thermal Engineering},
  title        = {Studies of the combustion process with simultaneous formaldehyde and OHPLIF in a direct-injected HCCI engine},
  url          = {http://dx.doi.org/10.1299/jsmeb.48.701},
  volume       = {48},
  year         = {2005},
}