Exhaust gas aftertreatment system for an ammonia fueled internal combustion engine
AssigneeLiebherr-Components Colmar SAS
InventorSalvatore Collura
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Abstract
The present disclosure provides an exhaust gas aftertreatment system for an ammonia fueled internal combustion engine comprising: a passive SCR catalyst system arranged downstream of the engine, the passive SCR catalyst system comprising an SCR catalyst and no reductant injection system, and an active SCR catalyst system arranged downstream of the passive SCR catalyst system, the active SCR catalyst system comprising an SCR catalyst, a first NOx sensor and a reductant injection system, the reductant injection system comprising a reductant injector and a controller controlling reductant injection based on an NOx concentration measured by the first NOx sensor.
Claims19
An exhaust gas aftertreatment system for an ammonia fueled internal combustion engine comprising:
- a passive SCR catalyst system arranged downstream of the engine, the passive SCR catalyst system comprising an SCR catalyst and no reductant injection system,
- an active SCR catalyst system arranged downstream of the passive SCR catalyst system, the active SCR catalyst system comprising an SCR catalyst, a first NOx sensor and a reductant injection system, the reductant injection system comprising a reductant injector and a controller controlling reductant injection based on an NOx concentration measured by the first NOx sensor, and
- wherein the passive SCR catalyst system is between 2 to 5 times bigger than the active SCR catalyst system.
Dependencies are inferred from the claim text.