Phosphor thermometry for in-cylinder surface temperature measurements in diesel engines
Binder, Christian LU ; Feuk, Henrik LU
and Richter, Mattias
LU
(2020)
In Journal of Luminescence
226.
- Abstract
Phosphor thermometry is a temperature measurement technique that has previously been employed in technically relevant applications to obtain surface temperature. The technique is based on temperature-dependent changes in a phosphor's luminescence. To improve the accuracy and precision of temperature measurements with this technique, the present study considers, by way of example, the impact of conditions inside the cylinder of a diesel engine on decay time based single-shot phosphor thermometry measurements. After an initial, general assessment of the effect of prevailing measurement conditions, this research investigates errors caused by soot luminosity, extinction, signal trapping and changes of phosphors' luminescence properties due... (More)
Phosphor thermometry is a temperature measurement technique that has previously been employed in technically relevant applications to obtain surface temperature. The technique is based on temperature-dependent changes in a phosphor's luminescence. To improve the accuracy and precision of temperature measurements with this technique, the present study considers, by way of example, the impact of conditions inside the cylinder of a diesel engine on decay time based single-shot phosphor thermometry measurements. After an initial, general assessment of the effect of prevailing measurement conditions, this research investigates errors caused by soot luminosity, extinction, signal trapping and changes of phosphors' luminescence properties due to exposure to the harsh environment. Furthermore, preferable properties of phosphors which are suitable for in-cylinder temperature measurements are discussed. 16 phosphors are evaluated, including LaAlGe2O7:Tm, YVO4:(Dy,Ce), ZnS:(Tm,Ag), and ZnS:(Tm,Li) which – to the authors' knowledge – have previously not been used in thermometry. Results indicate that errors due to photocathode bleaching, extinction, signal trapping and changes of luminescence properties may cause an erroneous temperature evaluation with temperature errors in the order of several tens of Kelvin.
(Less)
- author
- Binder, Christian
LU
; Feuk, Henrik
LU
and Richter, Mattias
LU
- organization
- publishing date
- 2020
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Luminescence
- volume
- 226
- article number
- 117415
- publisher
- Elsevier
- external identifiers
-
- scopus:85088051319
- ISSN
- 0022-2313
- DOI
- 10.1016/j.jlumin.2020.117415
- language
- English
- LU publication?
- yes
- id
- f2727d9a-236b-4acc-b5d5-2bcfe231a592
- date added to LUP
- 2020-07-27 13:21:10
- date last changed
- 2024-03-05 00:27:46
@article{f2727d9a-236b-4acc-b5d5-2bcfe231a592,
abstract = {{<p>Phosphor thermometry is a temperature measurement technique that has previously been employed in technically relevant applications to obtain surface temperature. The technique is based on temperature-dependent changes in a phosphor's luminescence. To improve the accuracy and precision of temperature measurements with this technique, the present study considers, by way of example, the impact of conditions inside the cylinder of a diesel engine on decay time based single-shot phosphor thermometry measurements. After an initial, general assessment of the effect of prevailing measurement conditions, this research investigates errors caused by soot luminosity, extinction, signal trapping and changes of phosphors' luminescence properties due to exposure to the harsh environment. Furthermore, preferable properties of phosphors which are suitable for in-cylinder temperature measurements are discussed. 16 phosphors are evaluated, including LaAlGe<sub>2</sub>O<sub>7</sub>:Tm, YVO<sub>4</sub>:(Dy,Ce), ZnS:(Tm,Ag), and ZnS:(Tm,Li) which – to the authors' knowledge – have previously not been used in thermometry. Results indicate that errors due to photocathode bleaching, extinction, signal trapping and changes of luminescence properties may cause an erroneous temperature evaluation with temperature errors in the order of several tens of Kelvin.</p>}},
author = {{Binder, Christian and Feuk, Henrik and Richter, Mattias}},
issn = {{0022-2313}},
language = {{eng}},
publisher = {{Elsevier}},
series = {{Journal of Luminescence}},
title = {{Phosphor thermometry for in-cylinder surface temperature measurements in diesel engines}},
url = {{http://dx.doi.org/10.1016/j.jlumin.2020.117415}},
doi = {{10.1016/j.jlumin.2020.117415}},
volume = {{226}},
year = {{2020}},
}