This content is not included in your SAE MOBILUS subscription, or you are not logged in.
High-speed Imaging from Consecutive Cycles
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 24, 2001 by SAE International in United States
Annotation ability available
Event: Spring Fuels & Lubricants Meeting & Exhibition SAE International Fall Fuels & Lubricants Meeting & Exhibition
A new high-speed data handling method has been developed by advancing the Rutgers Super Imaging System (SIS) (having four units of infrared digital cameras) in order to capture successive in-cylinder spectral thermal images at high rates from consecutive cycles (HSI-CC).
The present HSI-CC method has been made possible by incorporating recent advancements in digital data handling peripheral devices and development of new dedicated computer programs including an MS Window-based operating system (WOS) for the SIS.
The SIS-HSI-CC permits simultaneous high-speed imaging of four (4) sets of 64 sequential images (or 128 images) at rates of over 2,000 frames/camera/sec in each cycle, which can be repeated for as many as 150 consecutive cycles. This amounts to a data volume of nearly 400 mega bytes (in 12-bit dynamic resolution) in an experiment. Key considerations for achieving the system performance include a new technique of storing the image data and relevant engine measurements (e.g. pressure-time and fuel injection histories) during the reaction period. The stored digital data is then transferred to two separate PC memory packs during the non-reacting period.
The image and corresponding engine data is reviewed in situ using the Rutgers Animation Program (RAP) (prior to conducting the next experiment). The RAP is a new computer program enabling simultaneous display on a PC screen of many (at present 50 pieces of animation) digital movies in a controlled manner, which is also used for analysis/presentation of raw and processed data. For example, the RAP can display results from 10 successive cycles of four geometrically identical spectral images and a matching pressure-time history per cycle.
This new SIS-HIS-CC-WOS-RAP is employed in investigation of flame development during the cold start on a spark-ignition engine. Some of the results discussed in this paper were obtained during the first 100 firing cycles from the engine at 13°C (55°F).
CitationJansons, M., Lin, S., and Rhee, K., "High-speed Imaging from Consecutive Cycles," SAE Technical Paper 2001-01-3486, 2001, https://doi.org/10.4271/2001-01-3486.
- Chaves, H., Hentschel, W., Obermeier, F., and Staslcki, B., “In Cylinder High Speed and Stroboscopie Video Observation of Spray Development in a DI Diesel Engine,” SAE Paper-961206, 1996.
- Tossefi, D., Belmont, M.R., Thurley, R., Thomas, J.C., Hacohen, J., “A Coupled Experimental-Theoretical Model of Flame Kernel Development in a Spark Ignition Engine,” SAE Paper-932716, 1993,
- Fujimoto, H., Hyun, G.S., Nogami, M., Hirakawa, K.H., Asai, T., and Senda, J., “Characteristics of Free and Imaging Gas Jets by Means of Image Processing,” SAE Paper-970045, 1997.
- Chang, C., Clasen, E., Song, K., Campbell, S., Jiang, H., Rhee, K.T., “Quantitative Imaging of In-cylinder Processes by Multispectral Methods,” SAE-970872, 1997.
- Jansons, M., Lin., S., Fang, T., and Rhee, KT, “Visualization of Preflame and Combustion Reactions in Engine Cylinders,” SAE Paper 2000-01-1800.
- Jansons, M., Lin, S., Choi, D.S., Campbell, S. and Rhee, K.T., “Study of High-pressure Injection DI Diesel Engine,” SAE Paper 1999-01-3494, 1999. SAE Paper-961206, 1996.
- Campbell, S., Lin, S., Jansons, M., and Rhee, K.T., “In-cylinder Liquid Fuel Layers, Cause of Unburned Hydrocarbon and Deposit Formation in SI Engines?” SAE Paper 1999-01-3579, 1999.
- Ludwig, C.B., Malkmus, W., Reardon, J.E., and Thomson, J.A.L., Handbook of Radiation from Combustion Gases, NASA SP-3080, 1973.
- Chang, C., Clasen, E., Song, K., Campbell, S., Jiang, H., Rhee, K.T., “Quantitative Imaging of In-cylinder Processes by Multispectral Methods,” SAE Paper-970872, 1997.