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US 12,540,568 B2Granted
Method for controlling the operation of a hydrogen combustion engine system
AssigneeVolvo Truck Corporation
InventorsLennart Andersson, Jonas Jansson
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AssigneeVolvo Truck Corporation
InventorsLennart Andersson, Jonas Jansson
Estimating the term…
A method for controlling the operation of a hydrogen combustion engine system of a vehicle. The hydrogen combustion engine system has a hydrogen combustion engine and an EATS to reduce emissions in the engine exhausts. The EATS has a selective catalyst reduction, SCR, catalyst and an ammonia slip catalyst, ASC, arranged downstream of the SCR catalyst. The method comprises: determining the temperature of the SCR catalyst; determining the temperature of the ASC; in response of determining that the temperature of the SCR catalyst is below a predetermined SCR temperature threshold value, and that the temperature of the ASC is below a predetermined ASC temperature threshold value, operating the hydrogen combustion engine in an H2 exhaust excess mode defined by an amount of unburnt H2 of at least 0.2 mol % in the engine exhausts, and using the unburnt H2 in the engine exhausts as a reductant for NOx conversion in the ASC.
A method for controlling the operation of a hydrogen combustion engine system of a vehicle, the hydrogen combustion engine system comprising a hydrogen combustion engine and an exhaust aftertreatment system, EATS, configured to reduce emissions in the engine exhausts, the EATS comprising a selective catalyst reduction, SCR, catalyst and an ammonia slip catalyst, ASC, arranged downstream of the SCR catalyst, wherein the method comprises:
A hydrogen combustion engine system for a vehicle, the hydrogen combustion engine system comprising a hydrogen combustion engine and an exhaust aftertreatment system, EATS, configured to reduce emissions in the engine exhausts, the EATS comprising a selective catalyst reduction, SCR, catalyst and an ammonia slip catalyst, ASC, arranged downstream of the SCR catalyst, wherein the hydrogen combustion engine system comprises a control unit configured to:
Dependencies are inferred from the claim text.