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Modeling the Evaporative Emissions of Oil-Fuel Mixtures
Technical Paper
2006-01-3402
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Motor vehicle hydrocarbon evaporative emissions are a crucial part of emissions regulations, and increasingly-stringent regulations stipulate essentially zero fuel-based hydrocarbon evaporative emissions. In port fuel injected engines, there is the potential for accumulation of PCV effluent in the intake system under certain vehicle operating conditions. The majority of this effluent is oil, but a percentage has been shown to be fuel. The percentage of fuel in this oil-fuel mixture in the intake is at a minimum equivalent to the fuel dilution level of the crankcase oil, and at times can be higher due to other sources of fuel, and fuel vapor, in the intake. This accumulation of liquid oil-fuel mixture can be a contributor of hydrocarbon evaporative emissions migrating out of the air induction system when subjected to transient temperatures while the engine is off. This paper describes a transient, multi-domain physical model in Modelica® to describe the evaporative emissions of fuel-oil mixtures during a simulated diurnal Sealed Housing Evaporative Determination (SHED) test. Following a description of the SHED test and the model, analytic results are shown and validated against the experimental data over a wide range of operating conditions. An analytic design of experiments (DOE) was conducted and compared with available experimental results for a range of liquid compositions and amounts, surface areas, and transient temperature profiles. The model proved to be very effective at predicting both the magnitude and trend-wise behavior of the evaporative emissions of fuel-oil mixtures over the range of conditions simulated.
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Batteh, J., Curtis, E., Mrjoian, M., and Revilock, T., "Modeling the Evaporative Emissions of Oil-Fuel Mixtures," SAE Technical Paper 2006-01-3402, 2006, https://doi.org/10.4271/2006-01-3402.Also In
References
- “Control of Air Pollution from New Motor Vehicles and New Motor Vehicle Engines: Evaporative Emission Regulations for Gasoline- and Methanol-Fueled Light-Duty Vehicles, Light-Duty Trucks and Heavy-Duty Vehicles,”
- Crane, M.E. Ariga, S. Boulard, R. Lindamood, B. 1994 “A Non-Intrusive Method of Measuring PCV Blowby Constituents” SAE- 941947 Society of Automotive Engineers
- Froelund, K. 2000 “Real-Time Steady-State Measurement of PCV Contribution to Oil Consumption on Ford 4.6L SI-Engine” SAE- 2000-01-2876 Society of Automotive Engineers
- Shayler, P.J. Winborn, L.D. Scarisbrick, A. 2000 “Fuel Transport to the Crankcase, Oil Dilution, and HC Return with Breather Flow During the Cold Operation of a SI Engine” SAE- 2000-01-1235 Society of Automotive Engineers
- Kawano, T. Itakura, H. Kato, N. Osanai, A. Matsubara, T. 2004 “A Measuring Technology to Analyze Concentration in the Air Intake System while the Engine is in Operation” SAE- 2004-01-0142 Society of Automotive Engineers
- Kaiser, E.W. Siegl, W.O. Russ, S.G. 1995 “Fuel Composition Effects on Hydrocarbon Emissions from a Spark-Ignited Engine- Is Fuel Absorption in Oil Significant” SAE- 952542 Society of Automotive Engineers
- Kaiser, E.W. Siegl, W.O. Russ, S.G. 1997 “Effect of Fuel Dissolved in Crankcase Oil on Engine-Out Hydrocarbon Emissions from a Spark- Ignited Engine” SAE- 972891 Society of Automotive Engineers
- Bauer, W. Heywood, J.B. Avanessian, O. Chu, D. 1996 “Flow Characteristics in Intake Port of Spark Ignition Engine Investigated by CFD and Transient Gas Temperature Measurement” 961997 Society of Automotive Engineers
- Batteh, J.J. Curtis, E.W. 2005 “Modeling Transient Fuel Effects with Alternative Fuels” SAE 2005-01-1127 Society of Automotive Engineers
- Batteh, J.J. Curtis, E.W. Jankovic, M. Magner, S. Moilanen, P. Wallace, J. 2006 “Transient Fuel Modeling and Control for Cold Start Intake Cam Phasing” SAE- 2006-01-1049 Society of Automotive Engineers
- Itakura, H. Kato, T. Kato, N. Nishimoto, T. 2004 “Analysis of the HC Behavior in the Air Intake System while Vehicle is Parked” SAE- 2004-01-0141 Society of Automotive Engineers
- Maeda, K. et al. 2003 “Development of a HC Adsorption Filter” SAE- 2003-01-0565 Society of Automotive Engineers
- Lebowitz, J. Lovette, J. Chan, C. Frich, D. 2005 “Activated Carbon Coated Polymeric Foam for Hydrocarbon Vapor Adsorption” SAE- 2005-01-1103 Society of Automotive Engineers
- Leffel, J. Abdolhosseini, R. 2005 “Requirements Setting, Optimization and “Best Fit” Application of AIS Hydrocarbon Adsorption Devices for Engine Evaporative Emissions Breathing Loss Control SAE- 2005-01-1104 Society of Automotive Engineers.
- http://www.modelica.org/
- Curtis, E. Aquino, C. Trumpy, D. Davis, G. 1996 “A New Port and Cylinder Wall Wetting Model To Predict Transient Air/Fuel Excursions in a Port Fuel Injected Engine” SAE- 96-1186 Society of Automotive Engineers
- Curtis, E. Aquino, C. Trumpy, D. Davis, G. Lavoie, G. 1997 “Modeling Intake Valve Warm-Up” ASME International 29 1
- Russ, S. Stevens, J. Aquino, C. Curtis, E. Fry, J. 1998 “The Effects of Injector Targeting and Fuel Volatility on Fuel Dynamics in a PFI Engine During Warm-Up: Part I-Experimental Results” SAE 98-2518
- Curtis, E. Russ, S. Aquino, C. Lavoie, G. Trigui, N. 1998 “The Effects of Injector Targeting and Fuel Volatility on Fuel Dynamics in a PFI Engine During Warm-Up: Part II-Model Results” SAE 98-2519
- Batteh, J.J. Curtis, E.W. 2003 “Modeling Transient Fuel Effects with Variable Cam Timing” SAE 2003- 01-3126 Society of Automotive Engineers
- Batteh, J.J. Curtis, E.W. Fried, M. 2005 “Analytical Assessment of Simplified Transient Fuel Tests for Vehicle Transient Fuel Compensation” SAE 2005-01-3894 Society of Automotive Engineers
- Spalding, D.B. 1979 Combustion and Mass Transfer Oxford Pergamon Press
- Puchalsky, C. Megli, T. Tiller, M. Trask, N. Wang, Y. Curtis, E. 2002 “Modelica Applications for Camless Engine Model Development” 2nd International Modelica Conference Proceedings 77 86
- Greenfield, M.L. Lavoie, G.A. Smith, C.S. Curtis, E.W. 1998 “Macroscopic Model of the D86 Fuel Volatility Procedure” SAE- 98-2724
- Cho, Y. Tian, T. 2004 “Modeling Engine Oil Vaporization and Transport of the Oil Vapor in the Piston Ring Pack of Internal Combustion Engines,” SAE 2004- 01-2912 Society of Automotive Engineers
- Reid, R.C. Prausnitz, J.M. Poling, B.E. 1987 The Properties of Gases and Liquids 4th Edition McGraw-Hill, Inc New York
- Batteh, J.J. Tiller, M. Goodman, A. 2005 “Monte Carlo Simulations for Evaluating Engine NVH Robustness” Proceedings of the 4 th International Modelica Conference 385 392 http://www.modelica.org/events/Conference2005/onl ine_proceedings/Session5/Session5a1.pdf
- Dymola. Dynasim AB Lund Sweden http://www.dynasim.com