Method of regulating an internal combustion engine
First Claim
1. A method of regulating an internal combustion engine in order to reach presettable nitrogen oxide emission values of the internal combustion engine, comprising:
- supplying the internal combustion engine at least a portion of an operating time with a first fuel and at least a portion of the operating time with a second fuel;
controlling a quantity of the first fuel supplied to the internal combustion engine per unit of time according to one of a preset control target value or a constant value; and
regulating a quantity of the second fuel supplied to the internal combustion engine per unit of time by matching a mixture pressure influenced by the quantity of the second fuel in an intake of the internal combustion engine to a mixture pressure target value determined according to a delivered output and a preset nitrogen oxide emission value of the internal combustion engine so as to reach the preset nitrogen oxide emission value.
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Accused Products
Abstract
Method of regulating an internal combustion engine in order to reach presettable nitrogen oxide emission values of the internal combustion engine, wherein the internal combustion engine is supplied at least some of the time with a first fuel and at least some of the time with a second fuel, the quantity of the first fuel supplied to the internal combustion engine per unit of time being controlled according to a preset control actual value or kept constant and the quantity of the second fuel supplied to the internal combustion engine per unit of time to reach a presettable nitrogen oxide emission value being regulated according to at least one recorded engine parameter.
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Citations
26 Claims
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1. A method of regulating an internal combustion engine in order to reach presettable nitrogen oxide emission values of the internal combustion engine, comprising:
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supplying the internal combustion engine at least a portion of an operating time with a first fuel and at least a portion of the operating time with a second fuel; controlling a quantity of the first fuel supplied to the internal combustion engine per unit of time according to one of a preset control target value or a constant value; and regulating a quantity of the second fuel supplied to the internal combustion engine per unit of time by matching a mixture pressure influenced by the quantity of the second fuel in an intake of the internal combustion engine to a mixture pressure target value determined according to a delivered output and a preset nitrogen oxide emission value of the internal combustion engine so as to reach the preset nitrogen oxide emission value. - View Dependent Claims (2, 3, 4, 5)
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6. A method of regulating an internal combustion engine in order to reach presettable nitrogen oxide emission values of the internal combustion engine, comprising:
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supplying the internal combustion engine at least a portion of an operating time with a first fuel and at least a portion of the operating time with a second fuel; controlling a quantity of the first fuel supplied to the internal combustion engine per unit of time according to one of a preset control target value or a constant value; and regulating the quantity of the second fuel supplied to the internal combustion engine per unit of time by matching a λ
-value influenced by the quantity of the second fuel in an exhaust of the internal combustion engine to a λ
-target value determined according to a delivered output and a preset nitrogen oxide emission value of the internal combustion engine so as to reach the preset nitrogen oxide emission value. - View Dependent Claims (7, 8, 9, 10)
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11. A method of regulating an internal combustion engine in order to reach presettable nitrogen oxide emission values of the internal combustion engine, comprising:
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supplying the internal combustion engine at least a portion of an operating time with a first fuel and at least a portion of the operating time with a second fuel; performing a first operating mode at a first side of a preset operation-switching point, the first operating mode including; controlling a quantity of the first fuel supplied to the internal combustion engine per unit of time according to one of a preset control target value or a constant value; and regulating the quantity of the second fuel supplied to the internal combustion engine per unit of time according to at least one recorded engine parameter so as to reach the preset nitrogen oxide emission value; performing a second operating mode at a second side of the preset operation-switching point, the second operating mode including; controlling a quantity of the second fuel supplied to the internal combustion engine per unit of time according to one of a preset control target value or a constant value; and regulating the quantity of the first fuel supplied to the internal combustion engine per unit of time according to at least one recorded engine parameter so as to reach the preset nitrogen oxide emission value; and switching an operating mode of the internal combustion engine between the first operating mode and the second operating mode. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A regulation section for use with an internal combustion engine, said regulation section comprising:
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a fuel mixing device; and a regulator operable to control said fuel mixing device to; supply the internal combustion engine at least a portion of an operating time with a first fuel and at least a portion of the operating time with a second fuel; control a quantity of the first fuel supplied to the internal combustion engine per unit of time according to one of a preset control target value or a constant value; and regulate a quantity of the second fuel supplied to the internal combustion engine per unit of time by matching a mixture pressure influenced by the quantity of the second fuel in an intake of the internal combustion engine to a mixture pressure target value determined according to a delivered output and a preset nitrogen oxide emission value of the internal combustion engine so as to reach the preset nitrogen oxide emission value. - View Dependent Claims (19, 20)
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21. A regulation section for use with an internal combustion engine, said regulation section comprising:
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a fuel mixing device; and a regulator operable to control said fuel mixing device to; supply the internal combustion engine at least a portion of an operating time with a first fuel and at least a portion of the operating time with a second fuel; control a quantity of the first fuel supplied to the internal combustion engine per unit of time according to one of a preset control target value or a constant value; and regulate the quantity of the second fuel supplied to the internal combustion engine per unit of time by matching a λ
-value influenced by the quantity of the second fuel in an exhaust of the internal combustion engine to a λ
-target value determined according to a delivered output and a preset nitrogen oxide emission value of the internal combustion engine so as to reach the preset nitrogen oxide emission value. - View Dependent Claims (22, 23)
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24. A regulation section for use with an internal combustion engine, said regulation section comprising:
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a fuel mixing device; and a regulator operable to control said fuel mixing device to; supply the internal combustion engine at least a portion of an operating time with a first fuel and at least a portion of the operating time with a second fuel; perform a first operating mode at a first side of a preset operation-switching point, the first operating mode including; controlling a quantity of the first fuel supplied to the internal combustion engine per unit of time according to one of a preset control target value or a constant value; and regulating the quantity of the second fuel supplied to the internal combustion engine per unit of time according to at least one recorded engine parameter so as to reach the preset nitrogen oxide emission value; perform a second operating mode at a second side of the preset operation-switching point, the second operating mode including; controlling a quantity of the second fuel supplied to the internal combustion engine per unit of time according to one of a preset control target value or a constant value; and regulating the quantity of the first fuel supplied to the internal combustion engine per unit of time according to at least one recorded engine parameter so as to reach the preset nitrogen oxide emission value; and switch an operating mode of the internal combustion engine between the first operating mode and the second operating mode. - View Dependent Claims (25, 26)
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Specification