Method and system for controlling an internal combustion engine and/or an exhaust after treatment device of a vehicle, vehicle with such a system, as well as computer program product for carrying out such a method and control unit with such a computer program product
First Claim
1. A method for controlling at least one of an internal combustion engine and an exhaust gas aftertreatment device of a vehicle comprising:
- assigning at least one countermeasure to each of a plurality of exhaust gas components emitted by the internal combustion engine, each countermeasure controlling at least one of the internal combustion engine and the exhaust gas aftertreatment device;
determining a driving state of the vehicle using at least one driving state detector;
generating driving state signals based on the determined driving state;
determining an emission value of each of a plurality of exhaust gas components emitted by the internal combustion engine based on the driving state signals and a computer model stored in a control unit;
comparing each of the determined emission values to a predefined emission limit for the corresponding one of the plurality of exhaust gas components with the control unit; and
activating, by the control unit, at least one countermeasure assigned to a respective exhaust gas component when the determined emission values exceed the predefined emission limits for the respective exhaust gas component such that the determined emission values are reduced until they lie below the predefined emission limits, wherein when more than one of the plurality of exhaust gas components exceed their respective predefined emission limits, the control unit is further configured to stagger the countermeasures by starting a next countermeasure when a previous countermeasure is fully exhausted.
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Abstract
A method and systems are disclosed for controlling the exhaust emissions an internal combustion engine of a vehicle. The driving state of the vehicle is determined and corresponding driving state signals are generated with the aid of driving state detectors. The emission values of the exhaust gases emitted by the internal combustion engine are determined based on the driving state signals by a computer model stored in a control unit. The determined emission values are compared with predefined emission limits by the control unit. If the determined emission values exceed the predefined emission limits, the internal combustion engine and/or the exhaust aftertreatment device are controlled by the control unit such that the determined emission values are reduced until they lie below the predefined emission limits.
7 Citations
12 Claims
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1. A method for controlling at least one of an internal combustion engine and an exhaust gas aftertreatment device of a vehicle comprising:
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assigning at least one countermeasure to each of a plurality of exhaust gas components emitted by the internal combustion engine, each countermeasure controlling at least one of the internal combustion engine and the exhaust gas aftertreatment device; determining a driving state of the vehicle using at least one driving state detector; generating driving state signals based on the determined driving state; determining an emission value of each of a plurality of exhaust gas components emitted by the internal combustion engine based on the driving state signals and a computer model stored in a control unit; comparing each of the determined emission values to a predefined emission limit for the corresponding one of the plurality of exhaust gas components with the control unit; and activating, by the control unit, at least one countermeasure assigned to a respective exhaust gas component when the determined emission values exceed the predefined emission limits for the respective exhaust gas component such that the determined emission values are reduced until they lie below the predefined emission limits, wherein when more than one of the plurality of exhaust gas components exceed their respective predefined emission limits, the control unit is further configured to stagger the countermeasures by starting a next countermeasure when a previous countermeasure is fully exhausted. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for controlling at least one of an internal combustion engine and an exhaust gas aftertreatment device comprising:
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driving state detectors configured to determine the driving state of the vehicle and generate corresponding driving state signals; and a control unit having a computer model relating the emission values of the exhaust gases emitted by the internal combustion engine based on the driving state signals with consideration of predefined boundary conditions, the control unit configured to; determine an emission value for each of a plurality of exhaust gases emitted by the internal combustion engine based on the driving state signals and the computer model; compare the determined emission value with a predefined emission limit corresponding to a respective one of the plurality of exhaust gases; and activate at least one countermeasure assigned to a respective exhaust gas component to control at least one of the internal combustion engine and the exhaust gas aftertreatment device when the determined emission values exceed the predefined emission limits for the respective exhaust gas component such that the determined emission values are reduced until they lie below the predefined emission limits wherein when more than one of the plurality of exhaust gas components exceed their respective predefined emission limits, the control unit is further configured to stagger countermeasures assigned to the plurality of exhaust gas components by starting a next countermeasure when a previous countermeasure is fully exhausted. - View Dependent Claims (12)
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Specification