Comparison of heat losses at the impingement point and in between two impingement points in a diesel engine using phosphor thermometry
Binder, Christian LU ; Matamis, Alexios LU
; Richter, Mattias
LU
and Norling, Daniel
(2019)
JSAE/SAE 2019 International Powertrains, Fuels and Lubricants Meeting
In SAE Technical Papers
- Abstract
In-cylinder heat losses in diesel engines reduce engine efficiency significantly and account for a considerable amount of injected fuel energy. A great part of the heat losses during diesel combustion presumably arises from the impingement of the flame. The present study compares the heat losses at the point where the flame impinges onto the piston bowl wall and the heat losses between two impingement points. Measurements were performed in a full metal heavy-duty diesel engine with a small optical access through a removed exhaust valve. The surface temperature at the impingement point of the combusting diesel spray and at a point in between two impingement points was determined using phosphor thermometry. The dynamic heat fluxes and the... (More)
In-cylinder heat losses in diesel engines reduce engine efficiency significantly and account for a considerable amount of injected fuel energy. A great part of the heat losses during diesel combustion presumably arises from the impingement of the flame. The present study compares the heat losses at the point where the flame impinges onto the piston bowl wall and the heat losses between two impingement points. Measurements were performed in a full metal heavy-duty diesel engine with a small optical access through a removed exhaust valve. The surface temperature at the impingement point of the combusting diesel spray and at a point in between two impingement points was determined using phosphor thermometry. The dynamic heat fluxes and the heat transfer coefficients which result from the surface temperature measurements are estimated. Simultaneous cylinder pressure measurements and high-speed videos are associated to individual surface temperature measurements. Thus each surface temperature measurement is linked to a specific impingement and combustion events. An analysis of the surface temperature in connection with the high speed images reveals the great impact of flame impingement on instantaneous local heat flux at the impingement point. Absence of such an effect in between two impingement points implies an inhomogeneous temperature field.
(Less)
- author
- Binder, Christian
LU
; Matamis, Alexios
LU
; Richter, Mattias
LU
and Norling, Daniel
- organization
- publishing date
- 2019-12-19
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- 2019 JSAE/SAE Powertrains, Fuels and Lubricants
- series title
- SAE Technical Papers
- article number
- 2019-01-2185
- edition
- December
- publisher
- Society of Automotive Engineers
- conference name
- JSAE/SAE 2019 International Powertrains, Fuels and Lubricants Meeting
- conference location
- Kyoto, Japan
- conference dates
- 2019-08-26 - 2019-08-29
- external identifiers
-
- scopus:85084470724
- ISSN
- 0148-7191
- DOI
- 10.4271/2019-01-2185
- language
- English
- LU publication?
- yes
- id
- 06582ee5-8dc4-42ab-905e-2cd20b50e889
- date added to LUP
- 2020-05-26 11:22:38
- date last changed
- 2022-04-18 22:27:53
@inproceedings{06582ee5-8dc4-42ab-905e-2cd20b50e889,
abstract = {{<p>In-cylinder heat losses in diesel engines reduce engine efficiency significantly and account for a considerable amount of injected fuel energy. A great part of the heat losses during diesel combustion presumably arises from the impingement of the flame. The present study compares the heat losses at the point where the flame impinges onto the piston bowl wall and the heat losses between two impingement points. Measurements were performed in a full metal heavy-duty diesel engine with a small optical access through a removed exhaust valve. The surface temperature at the impingement point of the combusting diesel spray and at a point in between two impingement points was determined using phosphor thermometry. The dynamic heat fluxes and the heat transfer coefficients which result from the surface temperature measurements are estimated. Simultaneous cylinder pressure measurements and high-speed videos are associated to individual surface temperature measurements. Thus each surface temperature measurement is linked to a specific impingement and combustion events. An analysis of the surface temperature in connection with the high speed images reveals the great impact of flame impingement on instantaneous local heat flux at the impingement point. Absence of such an effect in between two impingement points implies an inhomogeneous temperature field.</p>}},
author = {{Binder, Christian and Matamis, Alexios and Richter, Mattias and Norling, Daniel}},
booktitle = {{2019 JSAE/SAE Powertrains, Fuels and Lubricants}},
issn = {{0148-7191}},
language = {{eng}},
month = {{12}},
publisher = {{Society of Automotive Engineers}},
series = {{SAE Technical Papers}},
title = {{Comparison of heat losses at the impingement point and in between two impingement points in a diesel engine using phosphor thermometry}},
url = {{http://dx.doi.org/10.4271/2019-01-2185}},
doi = {{10.4271/2019-01-2185}},
year = {{2019}},
}