Method and device for controlling an exhaust gas aftertreatment system
AssigneeRobert Bosch GmbH
InventorsHolger Plote, Ralf Schernewski, Michael Walter, Horst Harndorf
Life of this patent
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Abstract
A method and a device for controlling an exhaust gas aftertreatment system, in which a first state variable characterizes the state of the exhaust gas aftertreatment system. A second state variable takes into consideration additional influences on the special operating state. A special operating state is initiated as a function of the first and the second state variable.
Claims22
A method for controlling a regeneration of a particulate filter in an exhaust gas aftertreatment system of an internal combustion engine, comprising:
- ascertaining a first state variable that characterizes a state of the exhaust gas aftertreatment system;
- ascertaining a second state variable that takes into consideration a further influence on a special operating state;
- in the case of a first value of the first state variable, initiating the special operating state as a function of the first state variable and the second state variable;
- and
- in the case of a second value of the first state variable, initiating the special operating state at all values of the second state variable;
- wherein the second state variable characterizes a state of at least one of the internal combustion engine, an environmental condition, and a type of driver.
A device for controlling a regeneration of a particulate filter in an exhaust gas aftertreatment system of an internal combustion engine, comprising:
- an arrangement for ascertaining a first state variable that characterizes a state of the exhaust gas aftertreatment system;
- an arrangement for ascertaining a second state variable that takes into consideration a further influence on a special operating state;
- an arrangement for, in the case of a first value of the first state variable, initiating the special operating state as a function of the first state variable and the second state variable;
- and
- an arrangement for, in the case of a second value of the first state variable, initiating the special operating state at all values of the second state variable;
- wherein the second state variable characterizes a state of at least one of the internal combustion engine, an environmental condition, and a type of driver.
Dependencies are inferred from the claim text.