METHODS AND SYSTEMS FOR AN AFTERTREATMENT ARRANGEMENT

Methods and systems are provided for partially regenerating a lean NOx trap 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 NOx trap is regenerated without regenerating a high-temperature storing region of...

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Bibliographic Details
Main Authors De Smet, Frederik, Balenovic, Mario, Krishnaswamy, Vijay
Format Patent
LanguageEnglish
Published 19.09.2019
Subjects
BLASTING
COMBUSTION ENGINES
CONTROLLING COMBUSTION ENGINES
ENGINE PLANTS IN GENERAL
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
STEAM ENGINES
WEAPONS
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Summary:Methods and systems are provided for partially regenerating a lean NOx trap 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 NOx trap is regenerated without regenerating a high-temperature storing region of the lean NOx trap. A battery charge is replenished during the shutdown, wherein the charge may be consumed during a subsequent engine operation.
Bibliography:Application Number: US201916354093