Lift-Off Lengths in an Optical Heavy-Duty Engine Operated at High Load with Low and High Octane Number Fuels
(2018) In SAE Technical Papers 2018-April.- Abstract
The influence of the ignition quality of diesel-and gasoline-like fuels on the lift-off length of the jet were investigated in an optical heavy duty engine. The engine was operated at a load of 22 bar IMEPg and 1200 rpm. A production type injector with standard holes were used. The lift-off length was recorded with high speed video Different injection pressures and inlet temperatures were used to affect conditions that consequently affect the lift-off length. No matter which fuel used nor injection pressure or inlet temperature, all lift-off lengths showed equal or close to equal lift-off length when stabilized. The higher octane fuel had a longer ignition delay and therefore the fuel penetrate the combustion chamber before... (More)
The influence of the ignition quality of diesel-and gasoline-like fuels on the lift-off length of the jet were investigated in an optical heavy duty engine. The engine was operated at a load of 22 bar IMEPg and 1200 rpm. A production type injector with standard holes were used. The lift-off length was recorded with high speed video Different injection pressures and inlet temperatures were used to affect conditions that consequently affect the lift-off length. No matter which fuel used nor injection pressure or inlet temperature, all lift-off lengths showed equal or close to equal lift-off length when stabilized. The higher octane fuel had a longer ignition delay and therefore the fuel penetrate the combustion chamber before auto ignition. This gave a longer lift-off length at the initial stage of combustion before reaching the same stabilized lift-off length. These results indicate that the hot combustion gases are a dominant factor to the lift-off length. Also, that possible soot reductions using high octanes fuels are feasible because of a longer ignition delay that allow more premixing, and an initially longer lift-off length due to longer penetration into the combustion chamber.
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- author
- Lundgren, Marcus LU ; Matamis, Alexios LU ; Wang, Zhenkan LU ; Garcia Valladolid, Pablo LU ; Richter, Mattias LU ; Andersson, Oivind LU and Andersson, Arne
- organization
- publishing date
- 2018-01-01
- type
- Contribution to journal
- publication status
- published
- subject
- in
- SAE Technical Papers
- volume
- 2018-April
- publisher
- Society of Automotive Engineers
- external identifiers
-
- scopus:85045422499
- ISSN
- 0148-7191
- DOI
- 10.4271/2018-01-0245
- language
- English
- LU publication?
- yes
- id
- 7f18c1d3-9ab2-4c63-aa94-ebfbc1d771d8
- date added to LUP
- 2018-04-24 15:22:53
- date last changed
- 2022-04-01 23:55:35
@article{7f18c1d3-9ab2-4c63-aa94-ebfbc1d771d8, abstract = {{<p>The influence of the ignition quality of diesel-and gasoline-like fuels on the lift-off length of the jet were investigated in an optical heavy duty engine. The engine was operated at a load of 22 bar IMEP<sub>g</sub> and 1200 rpm. A production type injector with standard holes were used. The lift-off length was recorded with high speed video Different injection pressures and inlet temperatures were used to affect conditions that consequently affect the lift-off length. No matter which fuel used nor injection pressure or inlet temperature, all lift-off lengths showed equal or close to equal lift-off length when stabilized. The higher octane fuel had a longer ignition delay and therefore the fuel penetrate the combustion chamber before auto ignition. This gave a longer lift-off length at the initial stage of combustion before reaching the same stabilized lift-off length. These results indicate that the hot combustion gases are a dominant factor to the lift-off length. Also, that possible soot reductions using high octanes fuels are feasible because of a longer ignition delay that allow more premixing, and an initially longer lift-off length due to longer penetration into the combustion chamber.</p>}}, author = {{Lundgren, Marcus and Matamis, Alexios and Wang, Zhenkan and Garcia Valladolid, Pablo and Richter, Mattias and Andersson, Oivind and Andersson, Arne}}, issn = {{0148-7191}}, language = {{eng}}, month = {{01}}, publisher = {{Society of Automotive Engineers}}, series = {{SAE Technical Papers}}, title = {{Lift-Off Lengths in an Optical Heavy-Duty Engine Operated at High Load with Low and High Octane Number Fuels}}, url = {{http://dx.doi.org/10.4271/2018-01-0245}}, doi = {{10.4271/2018-01-0245}}, volume = {{2018-April}}, year = {{2018}}, }