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Optical Diagnostics of HCCI and UNIBUS Using 2-D PLIF of OH and Formaldehyde
Technical Paper
2005-01-0175
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Simultaneous OH- and formaldehyde planar-LIF measurements have been performed in an optical engine using two laser sources working on 283 and 355 nm, respectively. The measurements were performed in a light duty Diesel engine, using n-heptane as fuel, converted to single-cylinder operation and modified for optical access. It was also equipped with a direct injection common rail system as well as an EGR system.
The engine was operated in both HCCI mode, using a single fuel injection, and UNIBUS (Uniform Bulky Combustion System) mode, using two injections of fuel with one of the injections at 50 CAD before TDC and the other one just before TDC.
The OH and formaldehyde LIF images were compared with the heat-release calculated from the pressure-traces. Analyses of the emissions, for example NOx and HC, were also performed for the different operating conditions.
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Authors
- Leif Hildingsson - Division of Combustion Engines, Lund Institute of Technology
- Håkan Persson - Division of Combustion Engines, Lund Institute of Technology
- Bengt Johansson - Division of Combustion Engines, Lund Institute of Technology
- Robert Collin - Division of Combustion Physics, Lund Institute of Technology
- Jenny Nygren - Division of Combustion Physics, Lund Institute of Technology
- Mattias Richter - Division of Combustion Physics, Lund Institute of Technology
- Marcus Aldén - Division of Combustion Physics, Lund Institute of Technology
- Ryo Hasegawa - Toyota Motor Engineering & Manufacturing Europe S.A.
- Hiromichi Yanagihara - Toyota Motor Engineering & Manufacturing Europe S.A.
Topic
Citation
Hildingsson, L., Persson, H., Johansson, B., Collin, R. et al., "Optical Diagnostics of HCCI and UNIBUS Using 2-D PLIF of OH and Formaldehyde," SAE Technical Paper 2005-01-0175, 2005, https://doi.org/10.4271/2005-01-0175.Also In
Homogeneous Charge Compression Ignition (HCCI) Combustion 2005
Number: SP-1963; Published: 2005-04-11
Number: SP-1963; Published: 2005-04-11
Homogeneous Charge Compression Ignition (HCCI) Combustion on CD-ROM from the SAE 2005 World Congress
Number: SP-1982CD; Published: 2005-04-11
Number: SP-1982CD; Published: 2005-04-11
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