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

Claim 15:
16. A method of operating an engine exhaust aftertreatment system, comprising:
providing a flow of exhaust from a turbocharger;
injecting a reductant into the flow of exhaust within 5 inches downstream of the turbocharger with a first reductant injector;
after injecting the reductant, heating the flow of exhaust with a first heater;
providing the flow of exhaust to a first container including a multi-function catalyst (MFC) component;
injecting additional reductant into the flow of exhaust downstream of the first heater with a second reductant injector; and
after injecting the additional reductant, heating the flow of exhaust with a second heater.