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.
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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