System for fueling and feeding chemicals to internal combustion

Details System for fueling and feeding chemicals to internal combustion System for fueling and feeding chemicals to internal combustion

1996-11-19

1998-09-22

Denion, Thomas E.

Power plants

Internal combustion engine with treatment or handling of...

Methods

60286, 60301, F01N 300

Patent

active

058097740

ABSTRACT:
Diesel and other lean-burn engines emit less NO.sub.x, when the of fuel comprises an emulsion of hydrocarbon fuel and an aqueous solution of a nitrogenous NO.sub.x -reducing reagent which is separated into its two principal portions prior to combustion. The hot exhaust gases produced by burning the fuel contain NO.sub.x, but the NO.sub.x is reduced by introducing the separated aqueous solution of nitrogenous NO.sub.x -reducing reagent into at least a portion of the exhaust gases and directing them to a catalyst for selective catalytic reduction of NO.sub.x. The fuel emulsion preferably comprises a continuous phase comprising diesel fuel and from about 1 to about 20% (most preferably, from about 2 to about 10%) of a discontinuous phase comprising an aqueous solution of nitrogenous NO.sub.x -reducing reagent. It is also preferred to include in the fuel a corrosion inhibitor and biocide, and optionally a lubricity additive and emulsifier.

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Khalil, et al; "Reducing Diesel Particulate and NO.sub.x Emissions via Filtration and particle-Free Exhaust Gas Recirculation"; SAE Paper No. 950736; Detroit, MI; Feb. 27-Mar. 2,1995.
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