Ford Global Technolgoies, LLC

Vijay Krishnaswamy

Frederik De Smet

Mario Balenovic

Methods and systems are provided for partially regenerating a lean NOtrap in response to an engine shutdown request. In one example, an engine shutdown is delayed so that a low-temperature storing region of the lean NOtrap is regenerated without regenerating a high-temperature storing region of the lean NOtrap. A battery charge is replenished during the shutdown, wherein the charge may be consumed during a subsequent engine operation.

Methods and systems for an aftertreatment arrangement

A method is provided for controlling nitrogen oxide emissions in the exhaust gas of an internal combustion engine by means of successive actuation of catalytic converters in the exhaust tract and of the internal combustion engine, wherein the catalytic converters or the internal combustion engine are actuated in succession if the actuation of a first device is not sufficient for reducing the nitrogen oxide emissions. An arrangement for carrying out the method is also provided.

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Aachen, Germany

Vijay Krishnaswamy