Ford Global Technolgoies, LLC

David Wynn Philion

Michiel Jacques Van Nieuwstadt

Devesh Upadhyay

Christine Kay Lambert

Frank M Korpics

Timothy Webb

Dean Pennala

Jeff Reich

James Campbell

Various systems and methods are described for managing ammonia storage in an SCR catalyst. In one example approach, a method comprises, in response to a vehicle-off event, injecting ammonia during a final exhaust blowdown until a predetermined value of ammonia is stored in the SCR catalyst; and in response to a subsequent vehicle-on event when an amount of ammonia stored in the SCR catalyst is less than the predetermined value, injecting ammonia until the predetermined value of ammonia is stored in the SCR catalyst.

Ammonia storage management for SCR catalyst

The systems and method described above in the present disclosure allow for regeneration of a diesel particulate filter while a vehicle is in stationary power take-off mode. Described is a method of: during select power take-off conditions, reducing an EGR rate responsive to an indication to regenerate a diesel particulate filter.

Diesel particulate filter passive regeneration during stationary power take-off

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Richmond, MI, United States of America

David Wynn Philion