Adaptive engine control
First Claim
Patent Images
1. A system comprising:
- an engine;
an air/fuel regulator adapted to control at least one of an amount of air and an amount of fuel supplied to the engine;
a sensor adapted to sense a characteristic indicative of the engine'"'"'s power output; and
a controller coupled to the sensor and to the air/fuel regulator and adapted to;
signal the air/fuel regulator to control at least one of the amount of air and the amount of fuel supplied to the engine over a range of engine operation in response to a plurality of engine control set-points adapted to operate the engine within the range and a fuel parameter applicable evenly throughout the range, the fuel parameter being indicative of a composition of the fuel; and
adjust the fuel parameter as a function of the sensed characteristic indicative of the engine'"'"'s power output and an expected engine power output.
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Abstract
An engine system has an engine control module for controlling a ratio of air and fuel supplied to an engine. The engine control module controls the ratio of air and fuel in relation to a fuel parameter related to the specific energy of the fuel or the stoichiometry of the combustion reaction. The fuel parameter is updated in relation to the engine'"'"'s performance.
48 Citations
38 Claims
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1. A system comprising:
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an engine; an air/fuel regulator adapted to control at least one of an amount of air and an amount of fuel supplied to the engine; a sensor adapted to sense a characteristic indicative of the engine'"'"'s power output; and a controller coupled to the sensor and to the air/fuel regulator and adapted to; signal the air/fuel regulator to control at least one of the amount of air and the amount of fuel supplied to the engine over a range of engine operation in response to a plurality of engine control set-points adapted to operate the engine within the range and a fuel parameter applicable evenly throughout the range, the fuel parameter being indicative of a composition of the fuel; and adjust the fuel parameter as a function of the sensed characteristic indicative of the engine'"'"'s power output and an expected engine power output. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system comprising:
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an engine; an air/fuel regulator adapted to control at least one of an amount of air and an amount of fuel supplied to the engine; a sensor adapted to sense a characteristic indicative of a lambda of a mixture combusted by the engine; and a controller coupled to the sensor and to the air/fuel regulator and adapted to; receive a fuel definition input and determine a fuel parameter from the fuel definition input; signal the air/fuel regulator to control at least one of the amount of air and the amount of fuel supplied to the engine over a range of engine operation in response to a plurality of engine control set-points adapted to operate the engine within the range and the fuel parameter applicable evenly throughout the range, the fuel parameter being indicative of a composition of the fuel; adjust the fuel parameter as a function of the characteristic indicative of the lambda of the mixture combusted by the engine.
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13. A method for controlling an engine system comprising:
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adjusting an air/fuel mixture supplied to the engine over a range of engine operating conditions as a function of a plurality of engine set-points adapted to operate the engine within the range and a fuel parameter applicable evenly throughout the range, the fuel parameter indicative of a composition of the fuel; receiving a signal that is indicative of the engine'"'"'s power output; and adjusting the fuel parameter as a function of the signal indicative of the engine'"'"'s power output and an expected engine power output. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method for controlling an engine system comprising:
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receiving a fuel definition; initially determining a fuel parameter from the fuel definition; adjusting an air/fuel mixture supplied to the engine over a range of engine operating conditions as a function of a plurality of engine set-points adapted to operate the engine within the range and the fuel parameter applicable evenly throughout the range, the fuel parameter indicative of a composition of the fuel; receiving a signal that is indicative of a lambda of the mixture combusted by the engine; adjusting the fuel parameter as a function of the signal indicative of the lambda of the mixture combusted by the engine.
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26. An article comprising a machine-readable medium storing instructions adapted to cause one or more machines to perform operations comprising:
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determining regulator control signals over a range of engine operation in relation to a plurality of engine set-points adapted to operate the engine within the range and a fuel parameter applicable evenly throughout the range, the regulator control signal adapted to signal a regulator to adjust an air/fuel mixture supplied to an engine, the fuel parameter indicative of a composition of a fuel supplied to the engine; receiving a signal indicative of the engine'"'"'s power output; and adjusting the fuel parameter as a function of the signal indicative of the engine'"'"'s power output and an expected power output. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. An article comprising a machine-readable medium storing instructions adapted to cause one or more machines to perform operations comprising:
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receiving a fuel definition; initially determining a fuel parameter from the fuel definition; and determining regulator control signals over a range of engine operation in relation to a plurality of engine set-points adapted to operate the engine within the range and a fuel parameter applicable evenly throughout the range, the regulator control signal adapted to signal a regulator to adjust an air/fuel mixture supplied to an engine, the fuel parameter indicative of a composition of a fuel supplied to the engine; receiving a signal indicative of a lambda of a mixture combusted by the engine; and adjusting the fuel parameter in relation to the signal indicative of the lambda of the mixture combusted by the engine.
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Specification