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Development of a Durable Emissions Control System or an Automotive Two-Stroke Engine
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Abstract
It has been shown that an automotive, stratified charge, direct injected (DI) 2-stroke engine is capable of meeting the proposed Stage 3 European emissions standards and the Ultra Low Emissions Vehicle standards of California at low mileage. In order to meet these stringent standards and develop a high in-field mileage capability for this lean burn engine, new engine control strategies and catalyst formulations have been developed.
Engine out emissions and catalyst temperatures over both the proposed Stage 3 New European Drive Cycle (NEDC) and Federal Test Procedure (FTP) are described. Also with catalyst light-off time being an important factor in determining the overall cycle emissions, engine calibration based Fast Light Off and light load exhaust temperature strategies have been developed, in conjunction with optimised catalyst system configurations.
The extreme lean operation of this stratified charge, D.I. 2-stroke engine, and the inherently low Oxides of Nitrogen emission levels, mean that Rhodium-free precious metal oxidation only catalyst formulations are used. Catalyst screening techniques and results of different Platinum and Palladium precious metal mixes are presented.
In order to assess the performance of the catalyst systems under high mileage conditions, in-vehicle ageing cycles that simulate temperature regimes and oil deposition mechanisms of 2-stroke engines have been developed.
Finally exhaust and catalyst system configurations developed to meet future high mileage emissions durability requirements of extreme lean burning engines are also described.
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Citation
Houston, R., Archer, M., Moore, M., and Newmann, R., "Development of a Durable Emissions Control System or an Automotive Two-Stroke Engine," SAE Technical Paper 960361, 1996, https://doi.org/10.4271/960361.Also In
References
- Schlunke K. “The Orbital Combustion Process Engine” 10th Vienna Motorsymposium 1989 63 68
- Schlunke K. “The Orbital Combustion Process Engine - Fuel Economy Potential” Proceedings Transport and Greenhouse - Towards Solutions, National Conference Melbourne Australia November 1991
- Nuti M. “Direct Fuel Injection: An Opportunity for Two-Stroke SI Engines in Road Vehicles Use” SAE paper 860170 1986
- Nuti M. “Direct Fuel Injection: Piaggio Approach to Small 2T SI Engines” SAE Paper No. 880172 1988
- Duret P. Moreau J. “Reduction of Pollutant Emissions of the IAPAC Two-Stroke Engine with Compressed Air Assisted Fuel Injection” SAE Paper No. 900801 1990
- Sato T. Nakayama. M. “Gasoline Direct Injection for a Loop-Scavenged Two-Stroke Cycle Engine” SAE Paper No. 871690 1987
- Blair G.P. Kee R.J. Carson C.E. Douglas R. “The Reduction of Fuel Consumption by Direct Air-Assisted Fuel Injection into a Two-Stroke Engine” 4th Graz Two-Wheeler Symposium TU-Graz 1991
- Monnier G. Duret P. Glover S. “IAPAC Compressed Air Assisted Fuel Injection for High Efficiency Low Emissions Marine Outboard Two-Stroke Engines” SAE Paper No. 911251 , Small Engine Technology Conference Yokohama, Hamamatsu, Japan 1991
- Heimberg W. “Ficht Pressure Surge Injection System” Small Engine Technology Conf. Pisa, ITALY SAE Paper No. 931502 1993
- Smith D. Ahern S. “The Orbital Ultra Low Emissions and Fuel Economy Engine” 14th Vienna Motorsymposium May 1993 203 229
- Ahern S. Smith D. “Developments in the Orbital Ultra Low Emissions Vehicle” IFP International Seminar November 1993
- Leighton S.R. Ahern S.R. “The Orbital Small Engine Fuel Injection System (SEFIS) for Direct Injected Two-Stroke Cycle Engines” 5th Graz Two-Wheeler Symposium T-U Graz 1993
- Duret P. “A New Generation of Two-Stroke Engines for the Year 2000” A New Generation of Two-Stroke Engines for the Future? P. Duret and Editions Technip 181 194 Paris 1993
- State of California Air Resources Board “Proposed Regulations for Low Emission Vehicles and Clean Fuels” August 13th 1990 20
- Hadded O. Lake T.H. Stokes J. “Meeting the Challenges of ULEV and European Stage III Emissions with Low Fuel Consumption” Paper 94A1030, Proceedings of 4th International Conference Florence ATA 1994
- Tobis B.J. Meyer R. Yang J. Brehob D.H. Anderson R.W. “Scavenging of a Firing Two-Stroke Ignition Engine” SAE Paper 940393 1994
- Stuber A. Lange J. Klenk M. “Strategies Reducing Exhaust Emissions” Paper 94A1032, Proceedings of 4th International Conference Florence ATA 1994
- Scussel A.J. Simko A.O. Wade W.R. “The PROCO Engine Update” SAE Paper 780699 1978
- “Mitsubishi In-Cylinder Direct Injection Gasoline Engine” Mitsubishi Press Release Mitsubishi Motors Corp. Tokyo, Japan May 1995
- Carson C.E. Kee R.J. Kenny R.G. Stan C. Lehmann K. Zwhar S. “Ram Tuned and Air Assisted Direct Fuel Injection Systems Applied to a S.I. Two-Stroke Engine” SAE Paper 950269 1995
- Kollman K. Abthoff J. Zahn W. “Three Way Catalysts for Ultra-Low-Emissions Vehicles” Automotive Engineering SAE 17 October 1994
- Rodt S. Friedrich A. Jost D. Kolke R. Rudolf W. Tappe M. “Passenger Cars 2000: Requirements, Technical Feasibility and Costs of Exhaust Emissions Standards for the Year 2000 in the European Community” Federal Environmental Agency Berlin April 1995
- Ball D. J. “Distribution of Warm-up and Underfloor Catalyst Volumes” SAE Paper 922338 1992
- “Catalyst Start Heating System” Pierburg product information catalogue Pierburg 1994
- Laing P.M. “Development of an Alternator Powered Electrically Heated Catalyst System” SAE Paper 941042 1994
- Brisley R J Chandler G R Jones H R Anderson P J Shady P J “The Use of Palladium in Advanced Catalysts” SAE Paper 950259 1995
- Beck D. D. Monroe D. R. DiMaggio C. L. Sommers J. W. “The Performance of Pd, Pt and Pt-Pd Catalysts in Lean Exhausts” SAE Paper 930084 1993
- Eisenhauer K. “Durability Development of an Automotive Two-Stroke Engine” paper no 95A6006, 2nd International Seminar on High Performance Spark Ignition Engines for Passenger Cars Milan ATA November 1995
- Mooney J. J. Lauthan L. A. Rudy W. M. Hwang H. S. “High Temperature Ageing Cycle for European Catalyst Applications” SAE Paper 852098 1985
- Carberry B. P. Kirkpatrick S. Douglas R. Fleck R. “The Affect of the Catalytic Converter on the Gas Dynamics of the 2-Stroke Cycle Engine” 4th International Conference Florence ATA 1994
- Will N.S. Bennett C. J. “The use of CFD as an Aid to Catalytic Converter Design” Paper No. 94A1061, 4th International Conference Florence ATA 1994