This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Assessing High-Cell Density Catalyst Durability with MMT® Fuel Additive in Severe Driving Conditions
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 24, 2005 by SAE International in United States
Annotation ability available
This report describes the results of a fleet test conducted with vehicles certified to Euro IV standards and equipped with high cell density close coupled manifold mounted catalysts. The purpose of the test was to determine the effect of MMT® on vehicle emission system durability under severe in-service operating conditions and to address vehicle manufacturers concerns about the effects of MMT® in advanced technology vehicles. The results clearly show that performance and durability of the vehicles are not affected even under severe operating conditions when MMT® is used in the gasoline.
Two pairs each of Volkswagen Passats and Opel Corsas (eight vehicles total) were operated on a base fuel and a base fuel splash blended with MMT® at a concentration of 18 milligrams manganese per liter (“mg Mn/l”). The vehicles accumulated mileage on a driving regime representative of severe service. Mileage accumulation, both on road and a test track, was conducted in and around the Barcelona region of Spain. Idiada Automotive Technology SA conducted periodic emission testing using a European emissions certification fuel to assess the impact of the mileage accumulation fuel on emission system durability. Results from this test demonstrated that:
- All vehicles performed as expected without malfunction or driveability problems for 100,000 km.
- All of the MMT® cars met in-service conformity requirements and remained well below the OBD threshold for these vehicles.
It is concluded that vehicle manufacturers' concerns about MMT®'s impact on vehicles emission system durability are based on limited testing and remain the result of confounding factors that cannot be attributable to real world performance of MMT®.
CitationCunningham, L., Newkirk, M., Roos, J., Meffert, M. et al., "Assessing High-Cell Density Catalyst Durability with MMT® Fuel Additive in Severe Driving Conditions," SAE Technical Paper 2005-01-3840, 2005, https://doi.org/10.4271/2005-01-3840.
- Hollrah, D. P. Burns, A. M. 1991 March 11 MMT ® increases octane while reducing emissions Oil and Gas Journal 86 91
- Faggan, J. E. Bailie, J. D. Desmond, E. A. Lenane, D. L. 1975 An evaluation of manganese as an antiknock in unleaded gasoline Society of Automotive Engineers SAE Paper 750025
- Cunningham, L.J. Hollrah, D.P. Kulinowski, A.M. 1992 The use of fuel additives to control deposits in gasoline engines Poceedings - Japan Petroleum Institute Conference Tokyo, Japan October
- International Petroleum Industry Environment Conservation Association Getting the lead out: Downstream strategies and resources for phasing out leaded gasoline 2003
- Williamson, W. B. Gandhi, H. S. Weaver, E. E. 1982 Effects of fuel additive MMT ® on contaminant retention and catalyst performance Society of Automotive Engineers SAE Paper 821193
- Roos, J.W. Lenane, D.L. Dykes, K.L. Scull, H.M. 2000 A Systems Approach to Improved Exhaust Catalyst Durability: The Role of the MMT Fuel Additive Society of Automotive Engineers SAE Paper 2000-01-1880
- Turner, Mason & Company 1989 Reduced refinery emissions and costs via HiTEC® 3000 in unleaded gasoline Appendix 6 of May 9, 1990 Ethyl submission in support of waiver application to the U.S. Environmental Protection Agency
- Turner, Mason & Company 1991 Study of effects of HiTEC® 3000 use on refinery operations Appendix 14 of the November 26, 1991 Ethyl submission in support of waiver application to the U.S. Environmental Protection Agency
- Meffert, M.W. Lenane, D.L. Openshaw, M. Roos, J.W. 2000 Analysis of Nitrous Oxide Emissions from Light Duty Passenger Cars Society of Automotive Engineers SAE Paper 2000-01-1952
- Cunningham, L.J. Roos, J.W. 2001 “Reformulating Gasoline for Lower Emissions” World Refining November
- Roos, J.W. Cunningham, L.J. Grande, D.G. Hollrah, D.P. 2002 Reformulating gasoline for lower emissions using the fuel additive MMT ® Society of Automotive Engineers SAE Paper 2002-01-2893
- Roos, J.W. Scull, H.M. Dykes, K.L. Hotchkiss, A.R. Grande, D.G. Lenane, D.L. 1997 Evaluation of On-Board Diagnostic Systems and the Impact of Gasoline Containing MMT ® 972849
- Roos, J. W. 1994 The effect of manganese oxides on OBD-II catalytic converter monitoring Society of Automotive Engineers SAE Paper 942056
- Benson, J. D. Dana, D. 2002 The impact of MMT ® gasoline additive on exhaust emissions and fuel economy of low emission vehicles (LEV) Society of Automotive Engineers SAE Paper 2002-01-2894
- Roos, J. W. Hollrah, D. P. Guinther, G.H. Cunningham, L. J. 2002 A peer-reviewed critical analysis of SAE Paper 2002-01-2894 “The impact of MMT ® gasoline additive on exhaust emissions and fuel economy of low emission vehicles (LEV) Society of Automotive Engineers SAE Paper 2002-01-2903
- Cunningham, L.J. Hollrah, D.P. Newkirk, M.S. Roos, J.W. Van Landingham, C 2003 AAM/AIAM Fleet Test Program: Analysis and Comments Society of Automotive Engineers SAE Paper 2003-01-3287
- Lenane, D. L. 1978 Effect of MMT ® on emissions from production cars Society of Automotive Engineers SAE Paper 780003
- Lenane, D. L. Fort, B. F. Ter Haar, G. L. Lynam, D. R. Pfeifer, G. D. 1994 Emission results from a 48-car test evaluation of MMT ® performance additive The Science of the Total Environment 146 147 245 251
- Benson, J. D. 1979 Results of Coordinating Research Council MMT ® field-test program Society of Automotive Engineers SAE Paper 790706
- Manufacturers of Emission Controls Association 2003 Tier 2/LEV II Emission Control Technologies for Light -Duty Gasoline Vehicles August
- Andre, M. Hickman, A.J. Hassel, D. Joumard, R. 1995 Driving Cycles for Emission Measurements Under European Conditions Society of Automotive Engineers SAE Paper 950926
- Official Journal of the European Communities
- 3 October 2002
- Environmental Protection Agency 1998 Modification of Federal On-board Diagnostic (OBD) Regulations