Investigation of the Effect of Glow Plugs on Low Load Gasoline PPC
(2020) SAE 2020 International Powertrains, Fuels and Lubricants Meeting, PFL 2020 In SAE Technical Papers- Abstract
Low temperature combustion (LTC), is a promising alternative for combustion engines, because it combines the positive aspects of both CI and SI engines, high efficiency and low emissions. Another positive aspect of LTC is that it can operate with gasoline of different octane ratings. Still, higher octane gasolines prove to be difficult to operate at low load conditions leading to high combustion instability (COV) that leads also to high emissions. This drawback can be reduced by increasing the intake air temperature or increasing compression ratio, but it is not a viable strategy in conventional applications. For a diesel engine running under LTC conditions, a possibility is to use the existing hardware, glow plugs in this case, to... (More)
Low temperature combustion (LTC), is a promising alternative for combustion engines, because it combines the positive aspects of both CI and SI engines, high efficiency and low emissions. Another positive aspect of LTC is that it can operate with gasoline of different octane ratings. Still, higher octane gasolines prove to be difficult to operate at low load conditions leading to high combustion instability (COV) that leads also to high emissions. This drawback can be reduced by increasing the intake air temperature or increasing compression ratio, but it is not a viable strategy in conventional applications. For a diesel engine running under LTC conditions, a possibility is to use the existing hardware, glow plugs in this case, to increase the in-cylinder temperature at low loads and facilitate an improved combustion event. Here, an experimental investigation is performed, to investigate how glow plug operation can affect the combustion stability of an engine at steady state operation at low load, with different intake temperatures, as well the effect of them at higher loads. Results show that glow plugs are effective at reducing the required inlet air temperature for keeping stable combustion, with minimal effect on efficiency. The load limit that glow plugs are useful is around 7 bar IMEPg, or about 30 % of the maximum load. After that, the intake conditions can sustain combustion without the use of glow plugs.
(Less)
- author
- Dimitrakopoulos, Nikolaos LU and Tuner, Martin LU
- organization
- publishing date
- 2020
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- SAE Powertrains, Fuels & Lubricants Meeting
- series title
- SAE Technical Papers
- article number
- 2020-01-2067
- edition
- 2020
- publisher
- Society of Automotive Engineers
- conference name
- SAE 2020 International Powertrains, Fuels and Lubricants Meeting, PFL 2020
- conference location
- Virtual, Online, Poland
- conference dates
- 2020-09-22 - 2020-09-24
- external identifiers
-
- scopus:85092697159
- ISSN
- 0148-7191
- DOI
- 10.4271/2020-01-2067
- language
- English
- LU publication?
- yes
- id
- ebb31c02-11d5-4ff2-9c97-0ba91f34a969
- date added to LUP
- 2020-11-10 09:25:32
- date last changed
- 2022-04-19 01:58:19
@inproceedings{ebb31c02-11d5-4ff2-9c97-0ba91f34a969,
abstract = {{<p>Low temperature combustion (LTC), is a promising alternative for combustion engines, because it combines the positive aspects of both CI and SI engines, high efficiency and low emissions. Another positive aspect of LTC is that it can operate with gasoline of different octane ratings. Still, higher octane gasolines prove to be difficult to operate at low load conditions leading to high combustion instability (COV) that leads also to high emissions. This drawback can be reduced by increasing the intake air temperature or increasing compression ratio, but it is not a viable strategy in conventional applications. For a diesel engine running under LTC conditions, a possibility is to use the existing hardware, glow plugs in this case, to increase the in-cylinder temperature at low loads and facilitate an improved combustion event. Here, an experimental investigation is performed, to investigate how glow plug operation can affect the combustion stability of an engine at steady state operation at low load, with different intake temperatures, as well the effect of them at higher loads. Results show that glow plugs are effective at reducing the required inlet air temperature for keeping stable combustion, with minimal effect on efficiency. The load limit that glow plugs are useful is around 7 bar IMEPg, or about 30 % of the maximum load. After that, the intake conditions can sustain combustion without the use of glow plugs.</p>}},
author = {{Dimitrakopoulos, Nikolaos and Tuner, Martin}},
booktitle = {{SAE Powertrains, Fuels & Lubricants Meeting}},
issn = {{0148-7191}},
language = {{eng}},
publisher = {{Society of Automotive Engineers}},
series = {{SAE Technical Papers}},
title = {{Investigation of the Effect of Glow Plugs on Low Load Gasoline PPC}},
url = {{http://dx.doi.org/10.4271/2020-01-2067}},
doi = {{10.4271/2020-01-2067}},
year = {{2020}},
}