Method of oxidizing soot and reducing soot accumulation in a diesel fuel combustion after treatment system

Abstract

A method of reducing the negative effects of accumulation of ash in a diesel fuel combustion system includes supplying a diesel fuel having an additive that includes a manganese compound to a diesel fuel combustion system. The combustion system includes a catalyzed diesel particulate filter or, alternatively, a continuously regenerating technology diesel particulate filter. The fuel is then combusted in the combustion system to product at least one byproduct that includes the manganese compound. The manganese compound is supplied in an amount effective to complex with the combustion byproduct.

What is claimed is:  
     
         1 . A method of reducing the negative effects of ash accumulation in a diesel fuel combustion system comprising: 
 supplying a diesel fuel comprising an additive that includes a manganese compound to a diesel fuel combustion system, wherein the combustion system comprises a catalyzed diesel particulate filter,    combusting the fuel in the combustion system to produce at least one byproduct comprising the manganese compound,    the manganese compound being supplied in an amount effective to complex with the at least one combustion byproduct,    whereby engine backpressure is reduced as compared with using unadditized fuel.    
     
     
         2 . A method of reducing the negative effects of ash accumulation in a diesel fuel combustion system comprising: 
 supplying a diesel fuel comprising an additive that includes a manganese compound to a diesel fuel combustion system, wherein the combustion system comprises a continuously regenerating technology diesel particulate filter,    combusting the fuel in the combustion system to produce at least one byproduct comprising the manganese compound,    the manganese compound being supplied in an amount effective to complex with the at least one combustion byproduct,    whereby engine backpressure is reduced as compared with using unadditized fuel.    
     
     
         3 . A method of reducing engine backpressure after filter regeneration in a diesel fuel combustion system comprising: 
 supplying a diesel fuel comprising an additive that includes a manganese compound to a diesel fuel combustion system, wherein the combustion system comprises a catalyzed diesel particulate filter,    combusting the fuel in the combustion system to produce at least one byproduct comprising the manganese compound,    the manganese compound being supplied in an amount effective to complex with the at least one combustion byproduct,    whereby engine backpressure after filter regeneration is reduced as compared to unadditized fuel.    
     
     
         4 . A method of reducing engine backpressure after filter regeneration in a diesel fuel combustion system comprising: 
 supplying a diesel fuel comprising an additive that includes a manganese compound to a diesel fuel combustion system, wherein the combustion system comprises a continuously regenerating technology diesel particulate filter,    combusting the fuel in the combustion system to produce at least one byproduct comprising the manganese compound,    the manganese compound being supplied in an amount effective to complex with the at least one combustion byproduct,    whereby the engine backpressure after filter regeneration is reduced as compared to unadditized fuel.    
     
     
         5 . A method of reducing sintering of combustion byproducts on a diesel particulate filter in a diesel fuel combustion system comprising: 
 supplying a diesel fuel comprising an additive that includes a manganese compound to a diesel fuel combustion system, wherein the combustion system comprises a catalyzed diesel particulate filter,    combusting the fuel in the combustion system to produce at least one byproduct comprising the manganese compound,    the manganese compound being supplied in an amount effective to complex with the at least one combustion byproduct,    whereby sintering of combustion byproducts on the filter is reduced as compared to using unadditized fuel.    
     
     
         6 . A method of reducing sintering of combustion byproducts on a diesel particulate filter in a diesel fuel combustion system comprising: 
 supplying a diesel fuel comprising an additive that includes a manganese compound to a diesel fuel combustion system, wherein the combustion system comprises a continuously regenerating technology diesel particulate filter,    combusting the fuel in the combustion system to produce at least one byproduct comprising the manganese compound,    the manganese compound being supplied in an amount effective to complex with the at least one combustion byproduct,    whereby sintering of combustion byproducts on the filter is reduced as compared to using unadditized fuel.    
     
     
         7 . A method of scavenging combustion byproduct poisons in a diesel fuel combustion system comprising: 
 supplying a diesel fuel comprising an additive that includes a manganese compound to a diesel fuel combustion system, wherein the combustion system comprises a catalyzed diesel particulate filter,    combusting the fuel in the combustion system to produce at least one byproduct comprising the manganese compound,    the manganese compound being supplied in an amount effective to complex with the at least one combustion byproduct,    whereby the combustion byproduct poisons effect on the filter is reduced as compared with using unadditized fuel.    
     
     
         8 . A method of reducing scavenging combustion byproduct poisons in a diesel fuel combustion system comprising: 
 supplying a diesel fuel comprising an additive that includes a manganese compound to a diesel fuel combustion system, wherein the combustion system comprises a continuously regenerating technology diesel particulate filter,    combusting the fuel in the combustion system to produce at least one byproduct comprising the manganese compound,    the manganese compound being supplied in an amount effective to complex with the at least one combustion byproduct,    whereby the combustion byproduct poisons effect on the filter is reduced as compared with using unadditized fuel.