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Combustion Radicals Observation of DME Engine by Spectroscopic Method
Technical Paper
2002-01-0863
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
For better understanding of the in-cylinder combustion characteristics of DME, combustion radicals of a direct injection DME-Fueled compression ignition engine were observed using a spectroscopic method. In this initial report, the emission intensity of OH, CH, CHO, C2 and NO radicals was measured using a photomultiplier. These radicals could be measured with wavelength resolution (half-width) of about 3.3 nm. OH and CHO radicals appeared first, and then CH radical emission was detected. After that, the combustion radicals were observed using a high-speed image intensified video camera. C2 and CH radicals were able to observe roughly as images. However, the emission intensity of DME combustion was not strong enough to take OH, CHO and NO radical images. CH radical combustion occurred near the chamber wall and burned like a ring, as combustion progress, indicating active heat release occurred near the chamber wall.
Authors
- Mitsuharu Oguma - New Energy and Industrial Technology Development Organization, NEDO
- Gisoo Hyun - National Institute of Advanced Industrial Science and Technology, AIST
- Mahabubul Alam - National Institute of Advanced Industrial Science and Technology, AIST
- Shinichi Goto - National Institute of Advanced Industrial Science and Technology, AIST
- Mitsuru Konno - Ibaraki Univ.
- Kazuya Oyama - Ibaraki Univ.
Citation
Oguma, M., Hyun, G., Alam, M., Goto, S. et al., "Combustion Radicals Observation of DME Engine by Spectroscopic Method," SAE Technical Paper 2002-01-0863, 2002, https://doi.org/10.4271/2002-01-0863.Also In
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