Patent ID: 8381514
Filing Date: 2013-02-26
Classification: F01N,Y02A

Abstract:
1. An emissions system for reducing nitrogen oxides in engine exhaust, the system comprising: an emissions catalyst having an inlet adapted to receive an exhaust from the engine; an injector operable to inject a liquid reductant into the exhaust upstream of the catalyst; a first liquid fuel; a fuel tank storing the first liquid fuel for combustion within the engine; a second liquid fuel; a supplemental reductant tank storing the second liquid fuel for injection into the exhaust; and a valve being supplied the first liquid fuel from the fuel tank as a first reductant, the valve also being in receipt of the second liquid fuel as a second reductant from the supplemental reductant tank, wherein the valve is in receipt of both the first and second liquid reductants such that one or both of the first and second liquid fuels is suppliable to the injector to reduce nitrogen oxides within the exhaust.