System and method for reducing mono-nitrogen oxide emissions

摘要

A system for reducing emissions in an engine is provided. The system includes a primary fuel tank having a primary fuel. The system also includes a secondary fuel tank having a secondary fuel. The system further includes a separator in fluid communication with the secondary fuel tank or the primary fuel tank or both the secondary fuel tank and the primary fuel tank, the engine and a hydrocarbon-selective catalytic reduction subsystem. The subsystem separator separates a less volatile portion of the secondary fuel or the primary fuel from a more volatile portion, said less volatile portion of the secondary fuel or the primary fuel in the separator is routed to the hydrocarbon-selective catalytic reduction subsystem and said more volatile portion of the secondary fuel or the primary fuel in the separator is routed to the engine.

主权项

1. A system for reducing emissions in an engine, the system comprising:
a primary fuel tank having one of diesel or gasoline; a secondary fuel tank having liquefied natural gas (LNG); and a separator in fluid communication with the secondary fuel tank, the engine, and a hydrocarbon-selective catalytic reduction subsystem via a reductant injector, wherein the primary fuel tank is in fluid communication with the engine and the reductant injector such that a more volatile portion of the diesel or a more volatile portion of the gasoline is routed to the reductant injector; wherein the separator separates a less volatile portion of the LNG from a more volatile portion of the LNG, said less volatile portion of the LNG in the separator is routed to the hydrocarbon-selective catalytic reduction subsystem and said more volatile portion of the LNG in the separator is routed to the engine.