Infrared measurements of soot formation in diesel sprays
- Physical Sciences Inc., Andover, MA (United States)
This paper describes an experimental program in which soot formation was monitored in the near-injector region for a diesel spray. Measurements were made for initial temperatures ranging from 700 to 950 K, pressures of approximately 3 MPa, and injection pressures of approximately 20 MPa. The fuel was normal dodecane. Measurements were obtained at locations ranging from 5 mm from the spray tip to 35 mm from the tip. Soot was monitored using infrared emission between 6 and 12 {micro}m with a custom-designed infrared spectrometer, and 9.4 {micro}m was found to be an appropriate wavelength for quantitative measurements of soot mass in the spray. Soot was observed at all locations in the spray. Results from this experimental effort indicate that soot is formed at the radial periphery of the spray and is poorly coupled to the spray`s high-momentum central core.
- OSTI ID:
- 413485
- Journal Information:
- Combustion and Flame, Journal Name: Combustion and Flame Journal Issue: 3 Vol. 107; ISSN CBFMAO; ISSN 0010-2180
- Country of Publication:
- United States
- Language:
- English
Similar Records
Measuring the soot onset temperature in high-pressure n-dodecane spray pyrolysis
Synchronized droplet size measurements for coal-water-slurry (CWS) diesel sprays of an electronically-controlled fuel injection system