Back to results
US 12,338,760 B2Granted
Pressure control in an exhaust aftertreatment system
AssigneeRobert Bosch GmbH
InventorsViktor Durkac, Lukas Cierny, Vojtech Novotny
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeRobert Bosch GmbH
InventorsViktor Durkac, Lukas Cierny, Vojtech Novotny
Estimating the term…
An exhaust aftertreatment system comprises: a transfer pump for conveying the reactant, a supply line for supplying the reactant to the exhaust stream, wherein the supply line has a fluid connection to the transfer pump, a pressure regulator designed to adjust the flow rate of the transfer pump depending on the pressure of the reactant in the supply line by way of a controller having at least one integral component. A method for controlling pressure in a supply line for supplying reactant includes the steps of: sensing the pressure of the reactant in the supply line, detecting whether a pressure curve of the pressure of the reactant in the supply line characteristic for the occurrence of air bubbles in the reactant occurs, and performing a reset of the integral component as a function of the detection of a pressure curve characteristic for the occurrence of air bubbles.
A method for controlling a pressure in a pressurized supply line (18) for supplying reactant for a selective catalytic reduction to an exhaust stream (6) in an exhaust aftertreatment system, wherein the exhaust aftertreatment system includes:
A pressure regulator (78) for controlling a pressure of a selective catalytic reduction reactant in a pressurized feed line (18) of an exhaust aftertreatment system including a transfer pump (54) configured to convey the reactant to an exhaust stream (6) via the feed line (18), the pressure regulator (78) configured to:
An exhaust aftertreatment system comprising:
Dependencies are inferred from the claim text.