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A Study of the Effects of Manganese Fuel Additive on Automotive Emissions
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English
Abstract
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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Authors
Citation
Faix, L., "A Study of the Effects of Manganese Fuel Additive on Automotive Emissions," SAE Technical Paper 780002, 1978, https://doi.org/10.4271/780002.Also In
References
- 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