Patent ID: 11905873
Assignee: CATERPILLAR INC.
Field: Environmental technology (Chemistry)
Classification: CPC F  Y | IPC F

Claim 0:
1. An engine exhaust aftertreatment system, comprising:
an internal combustion engine having an intake passage and an exhaust passage;
a turbocharger fluidly connected to the internal combustion engine, the turbocharger including a compressor and a turbine, the compressor being in fluid communication with the intake passage, and the turbine being in fluid communication with the exhaust passage;
a first reductant injector situated downstream of the turbocharger, wherein the first reductant injector is closely coupled to the turbocharger such that a reductant is injected into an exhaust flow of the turbocharger;
a first heating element situated downstream of the first reductant injector;
a first container downstream of the first reductant injector, the first container including a multi-functional catalyst (MFC) component;
a second reductant injector situated downstream of the first container;
a mixing component and a second heating element situated downstream of the second reductant injector; and
a second container downstream of the first container, the second container including a selective catalytic reduction (SCR) component and an Ammonia catalyst (AMOx) component.