A Study of a Glow Plug Ignition Engine by Chemiluminescence Images
Författare
Summary, in English
Images were taken in a model airplane engine, 4.11 cm₃, modified for optical access. The pictures were acquired using a high-speed camera capable of taking one photo every second or fourth crank angle degree, and consequently visualizing the progress of the combustion process. The images were taken with the same operating condition at two different engine speeds: 9600 and 13400 rpm. A mixture of 65% methanol, 20% nitromethane and 15% lubricant was used as fuel.
The experiments show that glow plug combustion is a propagating autoignition combustion and that the homogeneity of the oxidation process increases with the engine speed. It was also observed that at low speed, the low temperature reactions start together with the rate of heat release and once they are over the high temperature reactions appear. On the other hand at high speed there is no time for low temperature reactions followed by high temperature reactions. This means that formaldehyde formation is partially skipped and hydroxyl shows up almost at the same time but not in the same location as formaldehyde.
Avdelning/ar
Publiceringsår
2007
Språk
Engelska
Publikation/Tidskrift/Serie
SAE Technical Paper Series
Länkar
Dokumenttyp
Konferensbidrag
Förlag
Society of Automotive Engineers
Ämne
- Other Mechanical Engineering
Nyckelord
- Internal Combustion Engines
- Compression Ignition
- Two-Stroke
Conference name
JSAE/SAE International Fuels & Lubricants Meeting
Conference date
2007-07-23
Conference place
Kyoto, Japan
Status
Published
Projekt
- VIMPA
ISBN/ISSN/Övrigt
- ISSN: 0148-7191
- 2007-01-1884