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A Study of the Effects of Manganese Fuel Additive on Automotive Emissions
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1978 by SAE International in United States
Annotation ability available
The effects of using the manganese fuel additive, MMT, on experimental engine emission control systems have been evaluated in a prototype vehicle test program. Two types of engines and catalytic converters were used in vehicle emission control systems designed for compliance with the .41 HC, 3.4 CO, and 2.0 NOx g/mi standard. Testing included multiple engine dynamometer and vehicle schedules which accrued the equivalent of nearly 2-1/2 million vehicle miles.
The only major adverse effect of MMT fuel usage observed was a twofold increase in engine and tail pipe hydrocarbon emissions over the 50,000-mile vehicle test schedule durations employed. This increase was attributed to a build up of manganese oxide deposits in the engine combustion chambers.
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CitationFaix, L., "A Study of the Effects of Manganese Fuel Additive on Automotive Emissions," SAE Technical Paper 780002, 1978, https://doi.org/10.4271/780002.
- Benson Jack D. “Manganese Fuel Additive (MMT) Can Cause Vehicle Problems.” SAE No. 770655 Tulsa June 1977
- Lenane D. L. “MMT - A Further Evaluation.” SAE No. 770656 June 1977
- Environmental Protection Agency “Control of Air Pollution From New Motor Vehicles and New Motor Vehicle Engines.” Mileage and Service Accumulation
- Michigan State Highway Bureau of Transportation and Planning “Highway Speed Report No. 66.” April-May-June 1977
- Herod D. M. Nelson M. V. Wang W. M. “An Engine Dynamometer System for the Measurement of Converter Performance.” SAE No. 730557