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Design Factors That Affect Diesel Emissions
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Abstract
Although diesels, as a group, are a relatively small source of air pollutants, emissions standards which limit emissions from diesels have been adopted by California and the federal government. Test procedures and instrumentation for measuring diesel emissions have been developed, and an understanding of how engine design parameters affect emissions is evolving.
Smoke and carbon monoxide are primarily functions of fuel-air ratio. Smoke is also affected by injection timing, air motion, and fuel spray characteristics. Hydrocarbon emissions are most affected by details of injector design and matching of the spray geometry with the combustion chamber shape. Nitric oxide emissions are controlled by local oxygen availability in regions of high temperature and residence time at the high temperature. Retarded injection timing, rich local fuel-air ratios, lower mixing rates of fuel and air, lower compression ratio, and lower intake air temperature tend to reduce nitric oxide emissions but may increase smoke.
Smoke suppressant additives, water induction, exhaust gas recirculation, and catalytic converters reduce one or more of the emissions but are less desirable than emissions control through engine modifications.
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Bascom, R., Broering, L., and Wulfhorst, D., "Design Factors That Affect Diesel Emissions," SAE Technical Paper 710484, 1971, https://doi.org/10.4271/710484.Also In
References
- “Nationwide Inventory of Air Pollutant Emissions, 1968.” U. S. Department of Health, Education and Welfare, Public Health Service NAPCA Publication No. AP-73 August 1970
- Bascom R. C. Hass G. C. “A Status Report on the Development of the 1973 California Diesel Emissions Standards.” Paper 700671 SAE National West Coast Meeting Los Angeles August 1970
- Federal Register 35 219
- SAE Recommended Practice, Measurement of Carbon Dioxide, Carbon Monoxide, and Oxides of Nitrogen in Diesel Exhaust - SAE J177
- SAE Recommended Practice, Continuous Hydrocarbon Analysis of Diesel Exhaust - SAE J215
- Spindt R. S. Barnes G. J. Somers J. H. “The Characterization of Order Components in Diesel Exhaust Gas.” Paper 710605 SAE Mid-Year Meeting Montreal June 1971
- Springer K. J. “An Investigation of Diesel Powered Vehicle Odor and Smoke - Part III,” Final Report to the Public Health Service, Contract PH22-68-23 1969
- Scott W. M. “Looking in on Diesel Combustion.” SAE Transactions 79 1969 paper 690002
- Perez J. M. Landen E. W. “Exhaust Emission Characteristics of Precombustion Chamber Engines SAE Transactions 77 1968 paper 680421
- Ford H. S. Merrion D. F. Hames R. T. “Reducing Hydrocarbons and Odor in Diesel Exhaust by Fuel Injector Design.” Paper 700734 SAE Farm, Construction, Industrial Machinery and Powerplant Meeting Milwaukee September 1970
- Barnes G. J. “Relation of Lean Combustion Limits in Diesel Engines to Exhaust Odor Intensity.” SAE Transactions 77 1968 paper 680445
- Milks D. Savery C. W. Steinberg J. L. Matula R. A. “Studies and Analysis of Diesel Engine Odor Production.” Clean Air Congress of the International Union of Air Pollution Washington, D. C. December 1970
- Linnell R. H. Scott W. E. “Diesel Exhaust Composition and Odor Studies.” APCA November 1962
- Reckner L. R. Scott W. E. Biller W. P. “The Composition and Odor of Diesel Exhaust.” Proc. American Petroleum Inst. 45 111 1965
- Harkins J. Goodwine J. K. “Oxides of Nitrogen in Diesel Exhaust,” Jrl. APCA January 1969
- Newhall H. K. “Kinetics of Nitric Oxide Formation in High Pressure Hydrogen-Air Flames.” Paper 1970 Spring Meeting Western States Section of the Combustion Institute
- Obert E. F. “Internal Combustion Engines.” International Textbook Co. 1968
- Yumlu V. S. Carey A. W. “Exhaust Emission Characteristics of Four-Stroke, Direct Injection, Compression Ignition Engines.” Paper 680420 SAE Mid-Year Meeting Detroit May 1968
- Johnson J. H. Sienicki E. J. Zeck O. F. “A Flame Ionization Technique for Measuring Total Hydrocarbons in Diesel Exhaust.” Paper 680419 SAE Mid-Year Meeting Detroit May 1968
- Muller-Berner A. H. “The New Daimler-Benz 10-Cylinder Commercial Vehicle Diesel Engine.” ATZ 72
- Abthoff J. “Measurement and Variation of the Emission of Oxides of Nitrogen from Internal Combustion Engines by Measures Applied to the Engine and by Auxiliary Devices.” Combustion Engine Research Assoc., MIRA Translation, Research Report 79 1968
- McConnell G. “Oxides of Nitrogen in Diesel Engine Exhaust Gas: Their Formation and Control.” Inst. Mech. Engineers Westminster, London, SWI
- Khan B. E. “Formation and Combustion of Carbon in a Diesel Engine.” Paper 700735 SAE Farm, Construction, Industrial Machinery and Powerplant Meeting Milwaukee September 1970
- Brown W. J. Gendernalik S. A. Kerley R. V. Marsee F. J. “Effect of Engine Intake Air Moisture on Exhaust Emissions.” SAE Transactions 79 1970 paper 700107
- Robison J. A. “Humidity Effects on Engine Nitric Oxide Emissions at Steady State Conditions.” SAE Transactions 79 1970 paper 700467
- Newhall H. K. “Control of Nitrogen Oxides by Exhaust Recirculation-A Preliminary Study.” SAE Transactions 76 paper 670495
- Valdmanis E. Wulfhorst D. E. “The Effects of Emulsified Fuels and Water Induction on Diesel Combustion.” Paper 700736 SAE Farm, Construction, Industrial Machinery and Powerplant Meeting Milwaukee September 1970
- Carey A. W. “Smoke Reduction in Diesel Engines.” Paper 670224 SAE Mid-Continent Section Meeting 1967
- Knight B. E. Wang C. H. “Some Experiments on the Mode of Action of a Diesel Smoke Suppressant Additive.” Proc. Inst. Mech. Engineers 1968
- Miller C. O. Arnold A. P. “Resume of Additives for Diesel Fuels and Their Function.” Paper SAE Meeting Detroit May 1970
- Burt R. Troth K. A. “Influence of Fuel Properties on Diesel Exhaust Emissions.” Proc. Inst. Mech. Engineers 1968
- Springer K. J. Hare C. T. “Four Years of Diesel Odor and Smoke Control Technology Evaluations-A Summary.” ASME paper 69-WA/APC-3 1969 ASME Winter Annual Meeting Los Angeles November 1969
- Marshall W. F. Hurn R. W. “Factors Influencing Diesel Emissions.” SAE Transactions 77 1968 paper 680528
- Alperstein M. “Fumigation Kills Smoke,” SAE Transactions 66 1958 paper 248
- Carey, A. W. Jr. “Steady-State Correlation of Diesel Smoke Meters-An SAE Task Force Report.” Paper 690492 SAE Mid-Year Meeting Chicago May 1969
- Mills F. J. Wagner T. O. Lawrence D. K. “CRC Correlation of Diesel Smokemeter Measurements.” Paper 690493 SAE Mid-Year Meeting Chicago May 1969
- Meurer J. S. “Evaluation of Reaction Kinetics Eliminates Diesel Knock-The M-Combustion System of MAN.” SAE Transactions 64 1956
- Nicholls J. E. El-Messiri I. A. Newhall H. K. “Inlet Manifold Water Injection for Control of Nitrogen Oxides-Theory and Experiment.” SAE Transactions 78 1969 paper 690018
- “Measuring Diesel Exhaust Smoke.” Ethyl Technical Notes Ethyl Corp.