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The effect to knock on the heat transfer in a spark-ignition engines : Cars temperature measurements in the thermal boundary layer combined with heat-flux measurements

Grandin, B.; Denbratt, I.; Bood, J. LU ; Brackmann, C. LU and Bengtsson, P. E. LU (2000) In SAE Technical Papers p.79-79
Abstract

The temperature in the thermal boundary layer close to the combustion chamber wall was measured under knocking and non-knocking conditions using dual-broadband rotational coherent anti-Stokes Raman Scattering (CARS). A horseshoe-shaped combustion extension was employed to get an optical access to the region near the combustion chamber wall. Time-resolved measurements of the cylinder pressure (at three different locations in the cylinder chamber) and the heat flux to the wall were conducted simultaneously with the CARS measurements. Knocking and non-knocking conditions were achieved using different mixtures of n-heptane and iso-octane. Results from this measurement series will be used further for comparison with modeling of heat transfer... (More)

The temperature in the thermal boundary layer close to the combustion chamber wall was measured under knocking and non-knocking conditions using dual-broadband rotational coherent anti-Stokes Raman Scattering (CARS). A horseshoe-shaped combustion extension was employed to get an optical access to the region near the combustion chamber wall. Time-resolved measurements of the cylinder pressure (at three different locations in the cylinder chamber) and the heat flux to the wall were conducted simultaneously with the CARS measurements. Knocking and non-knocking conditions were achieved using different mixtures of n-heptane and iso-octane. Results from this measurement series will be used further for comparison with modeling of heat transfer and chemical kinetics close to the cylinder wall.

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author
organization
publishing date
type
Contribution to journal
publication status
published
in
SAE Technical Papers
issue
B
pages
1 pages
publisher
Society of Automotive Engineers
external identifiers
  • Scopus:6744243293
language
English
LU publication?
yes
id
a4fe58aa-f757-4bce-90bd-15b715c0508f
date added to LUP
2016-06-29 17:26:12
date last changed
2016-11-15 13:22:55
@misc{a4fe58aa-f757-4bce-90bd-15b715c0508f,
  abstract     = {<p>The temperature in the thermal boundary layer close to the combustion chamber wall was measured under knocking and non-knocking conditions using dual-broadband rotational coherent anti-Stokes Raman Scattering (CARS). A horseshoe-shaped combustion extension was employed to get an optical access to the region near the combustion chamber wall. Time-resolved measurements of the cylinder pressure (at three different locations in the cylinder chamber) and the heat flux to the wall were conducted simultaneously with the CARS measurements. Knocking and non-knocking conditions were achieved using different mixtures of n-heptane and iso-octane. Results from this measurement series will be used further for comparison with modeling of heat transfer and chemical kinetics close to the cylinder wall.</p>},
  author       = {Grandin, B. and Denbratt, I. and Bood, J. and Brackmann, C. and Bengtsson, P. E.},
  language     = {eng},
  number       = {B},
  pages        = {79--79},
  publisher    = {ARRAY(0x9348fa0)},
  series       = {SAE Technical Papers},
  title        = {The effect to knock on the heat transfer in a spark-ignition engines : Cars temperature measurements in the thermal boundary layer combined with heat-flux measurements},
  year         = {2000},
}