This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Factors Influencing Diesel Emissions
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1968 by SAE International in United States
Annotation ability available
Event: National West Coast Meeting
Smoke, odor, and other emissions of concern in environmental pollution from four diesel engines were studied experimentally; engine design, operational mode, and fuel characteristics were considered as variable factors influencing the emissions. The engine included a turbocharged 4-cycle unit, normally aspirated 4-cycle units, and an air-scavenged 2-cycle engine. All were direct injection, truck-type power units. Fuel characteristics differed widely among eight fuels used in the study, with principal differences occurring in sulfur and aromatic content.
Results of the experimental study showed that emissions levels in all categories are markedly influenced by engine operation. Within the group of engines tested, generally high emissions of unburned hydrocarbon are associated with the 2-cycle design, high smoke levels with the 4-cycle normally aspirated engines, and high emissions of NOX and oxygenates with the turbocharged 4-cycle engine. Exhaust odor intensity levels were roughly equivalent for all engine types. Emissions in all categories were surprisingly insensitive to variation in fuel characteristics, with the exception that smoke levels were significantly reduced with addition of a smoke suppressant additive to the fuel. Neither of two odor inhibitors was found effective.
CitationMarshall, W. and Hum, R., "Factors Influencing Diesel Emissions," SAE Technical Paper 680528, 1968, https://doi.org/10.4271/680528.
- Reckner L. R. and Squires R. E. “Diesel Exhaust Odor Measurement Using Human Panels.” Paper 680444 presented at SAE Mid-Year journal, Detroit, May 1968.
- Stahman Ralph C., Kittredge George D., and Springer Karl J., “Smoke and Odor Control for Diesel-Powered Truck; and Buses.” Paper 680443 presented at SAE Mid-Year journal, Detroit, May 1968.
- Hum R. W. and Marshall W. F. “Techniques for Diesel Emissions Measurement.” Paper 680418 presented at SAE Mid-Year journal, Detroit, May 1968.
- U. S. Dept. of Health, Education, and Welfare, Office of the Secretary, “Control of Air Pollution from New Motor Vehicles and New Motor Vehicle Engines -- Proposed 1970 Standards.” Federal Register, Vol. 33, No. 2, Part II, January 1968.
- Turk Amos, “Selection and Training of Judges for Sensory Evaluation of the Intensity and Character of Diesel Exhaust.” PHS Publication 999-AP-32. U. S. Dept. of HEW, Bureau of Disease Prevention and Environmental Control, National Center for Air Pollution Control, Cincinnati, 1967.
- Springer Karl J. and Stahman Ralph C., “An Investigation of Diesel Powered Vehicle Odor and Smoke.” Paper FL-66-46 presented at NPRA Fuels and Lubricants journal, Philadelphia, September 1966.
- Yumlu V. S. and Carey A. W. Jr., “Exhaust Emission Characteristics of Four-Stroke, Direct Injection, Compression Ignition Engines.” Paper 680420 presented at the SAE Mid-Year journal, Detroit, May 1968.
- Johnson J. H., Sienicki E. J., and Zeck O. F. “A Flame Ionization Technique for Measuring Total Hydrocarbons in Diesel Exhaust.” Paper 680419 presented at the SAE Mid-Year journal, Detroit, May 1968.
- Perez J. M. and Landen E. W. “Exhaust Emission Characteristics of Precombustion Chamber Engines.” Paper 680421 presented at the SAE Mid-Year journal, Detroit, May 1968.